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STEERING

B1830,B2230,B2530,B3030, WSM

7-M3

3. STEERING CYLINDER

The steering cylinder is single piston both rod double-acting type. This steering cylinder is installed parallel to the

front axle and connected to tie-rods.

The tie-rods connected to both knuckle arm guarantees equal steering movement to both front wheels.
The steering cylinder provide force in both directions. Depending upon direction the steering wheel is turned

pressure oil enters at one end of the cylinder to extend, or the other end to retract it, thereby turning front wheel of
the tractor.

9Y1210003STM0003US0

(1) Rod
(2) Dust Seal

(3) Rod Cover
(4) U gasket

(5) Piston Seal
(6) Cylinder Tube

(7) O-ring

KiSC issued 05, 2012 A

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Summary of Contents for B1830

Page 1: ...B1830 B2230 B2530 B3030 WORKSHOP MANUAL TRACTOR KiSC issued 05 2012 A...

Page 2: ...fore you continue with the subsequent sections make sure that you read this section Refer to the latest version of Workshop Manual Code No 9Y021 01870 9Y021 18200 for the diesel engine tractor mechani...

Page 3: ...I INFORMATION KiSC issued 05 2012 A...

Page 4: ...CONTENTS 1 SAFETY FIRST I 1 2 SAFETY DECALS I 4 1 WITHOUT OPC I 4 2 WITH OPC I 10 3 SPECIFICATIONS I 13 4 TRAVELING SPEEDS I 16 5 DIMENSIONS I 18 INFORMATION KiSC issued 05 2012 A...

Page 5: ...or in disengaged positions Do not start the engine when you stay on the ground Start the engine only from operator s seat WSM000001INI0015US0 SAFETY FIRST This symbol the industry s Safety Alert Symb...

Page 6: ...efore you disconnect hydraulic or fuel lines Tighten all connections before you apply the pressure Do not open a fuel system under high pressure The fluid under high pressure that stays in fuel lines...

Page 7: ...egulations when you discard oil fuel coolant electrolyte and other dangerous waste WSM000001INI0007US1 PREVENT ACID BURNS Keep electrolyte away from your eyes hands and clothing Sulfuric acid in batte...

Page 8: ...following safety decals pictorial safety labels are installed on the machine If a decal becomes damaged illegible or is not on the machine replace it The decal part number is listed in the parts list...

Page 9: ...INFORMATION B1830 B2230 B2530 B3030 WSM I 5 9Y1210003INI0002US0 KiSC issued 05 2012 A...

Page 10: ...INFORMATION B1830 B2230 B2530 B3030 WSM I 6 9Y1210003INI0003US0 KiSC issued 05 2012 A...

Page 11: ...INFORMATION B1830 B2230 B2530 B3030 WSM I 7 9Y1210003INI0004US0 KiSC issued 05 2012 A...

Page 12: ...0 WSM I 8 CABIN Careful operation is your best insurance against an accident Read and understand carefully this section of the separately issued operator s manual before operating the tractor 9Y121000...

Page 13: ...INFORMATION B1830 B2230 B2530 B3030 WSM I 9 9Y1210003INI0006US0 KiSC issued 05 2012 A...

Page 14: ...ollowing safety decals pictorial safety labels are installed on the machine If a decal becomes damaged illegible or is not on the machine replace it The decal part number is listed in the parts list W...

Page 15: ...INFORMATION B1830 B2230 B2530 B3030 WSM I 11 9Y1210003INI0008US0 KiSC issued 05 2012 A...

Page 16: ...ater dry with a soft cloth 3 Replace damaged or missing pictorial safety labels with new labels 4 If a component with pictorial safety label s affixed is replaced with new part make sure new label s i...

Page 17: ...U S qts 3 3 Imp qts 4 7 L 5 0 U S qts 4 1 Imp qts Tire Farm Turf Farm Turf Front 6 12B 6 12 6 00 2 7 00 12 22 8 50 12 24 8 5 12 7 12 24 8 5 12 Rear 8 16 9 5 16 9 5 18 10 5 18 31 13 5 15 315 75D 15 12...

Page 18: ...change the specifications without notice PTO system Rear PTO shaft SAE 1 3 8 6 splines Revolution 1 speed 540 min 1 rpm at 2592 engine min 1 rpm Mid PTO shaft U S A No 5 KUBOTA 10 tooth involute splin...

Page 19: ...3 6 Imp gals No Bi Speed 15 L 4 0 U S gals 3 3 Imp gals Front axle case 3 7 L 3 9 U S qts 3 3 Imp qts Tire Farm Turf Front 6 12B 6 12 6 00 12 7 00 12 22 8 50 12 24 8 5 12 Rear 8 16 9 5 16 9 5 18 10 5...

Page 20: ...3 Reverse Low 0 to 3 16 0 to 2 0 0 to 3 34 0 to 2 1 0 to 3 59 0 to 2 2 0 to 3 75 0 to 2 3 0 to 3 09 0 to 1 9 0 to 3 37 0 to 2 1 Middle 0 to 5 88 0 to 3 7 0 to 6 21 0 to 3 9 0 to 6 68 0 to 4 2 0 to 6 9...

Page 21: ...67 7 3 12 53 7 8 13 11 8 1 10 80 6 7 11 78 7 3 9 17 12 10 6 18 10 11 2 19 44 12 1 20 34 12 6 16 76 10 4 18 28 11 4 Max Speed at 2850 engine rpm 18 07 11 2 19 11 11 9 20 52 12 8 21 47 13 3 17 69 11 0 1...

Page 22: ...INFORMATION B1830 B2230 B2530 B3030 WSM I 18 5 DIMENSIONS ROPS 9Y1210003INI0013US0 KiSC issued 05 2012 A...

Page 23: ...INFORMATION B1830 B2230 B2530 B3030 WSM I 19 CABIN 9Y1210003INI0014US0 KiSC issued 05 2012 A...

Page 24: ...G GENERAL KiSC issued 05 2012 A...

Page 25: ...4 3 CHECK POINTS OF EVERY 50 HOURS G 18 4 CHECK POINTS OF EVERY 100 HOURS G 23 5 CHECK POINTS OF EVERY 200 HOURS G 30 6 CHECK POINTS OF EVERY 300 HOURS G 34 7 CHECK POINTS OF EVERY 400 HOURS G 36 8 CH...

Page 26: ...always specify engine serial number tractor serial number and hour meter reading 9Y1210003GEG0001US0 1 Tractor Identification Plate 2 Tractor Serial Number 3 Engine Serial Number 4 ROPS Identification...

Page 27: ...g spring pins their splits must face the direction from which a force is applied See the figure left side To prevent damage to the hydraulic system use only specified fluid or equivalent Clean the par...

Page 28: ...t attempt to modify or remodel any electrical parts and wiring When removing the battery cables disconnect the negative cable first When installing the battery cables connect the positive cable first...

Page 29: ...e sag be required WSM000001GEG0068US1 In installing a part take care not to get wiring caught by it WSM000001GEG0069US1 After installing wiring check protection of terminals and clamped condition of w...

Page 30: ...recharging the battery remove it from the machine Before recharging remove cell caps Do recharging in a well ventilated place where there is no open flame nearby as hydrogen gas and oxygen are formed...

Page 31: ...is no female connector being too open WSM000001GEG0076US1 Make certain plastic cover is large enough to cover whole connector WSM000001GEG0077US1 5 HANDLING OF CIRCUIT TESTER Use tester correctly foll...

Page 32: ...es This symbol of shows color with stripe s An example Red stripe on white color W R WSM000001GEG0079US0 Color of wiring Color code Black B Brown Br Green G Gray Gy or Gr Blue L Light Green Lg Orange...

Page 33: ...ase with filter 3 0 L 3 2 U S qts 2 6 Imp qts 4 1 L 4 3 U S qts 3 6 Imp qts Engine oil API Service Classification CD CE or CF Below 0 C 32 F SAE10W 15W 30 or 10W 40 0 to 25 C 32 to 77 F SAE20 15W 30 o...

Page 34: ...002US0 Greasing No Place No of greasing point Capacity Type of grease 7 Top link 1 Until grease overflows Multipurpo se grease NLG1 2 or NLG1 1 GC LB Lift rod R H 1 Speed control pedal 1 HST Type batt...

Page 35: ...4 0 to 4 6 29 to 33 32 to 34 3 2 to 3 5 24 to 25 48 to 55 4 9 to 5 7 36 to 41 40 to 44 4 0 to 4 5 29 to 32 61 to 70 6 2 to 7 2 45 to 52 M12 63 to 72 6 4 to 7 4 47 to 53 78 to 90 7 9 to 9 2 58 to 66 6...

Page 36: ...11 Battery condition Check every 100 Hr G 24 4 12 Air cleaner element single type Clean every 100 Hr G 26 1 Replace every 1year G 40 2 13 Air cleaner element Double element type Primary element Clean...

Page 37: ...every 200 Hr G 31 24 Tension of air conditioner drive belt Adjust every 200 Hr G 32 25 Clogging of inner air filter Clean every 200 Hr G 32 26 Clogging of fresh air filter Clean every 200 Hr G 32 27...

Page 38: ...re of danger warning and caution labels 11 Clean around the exhaust manifold and the muffler of the engine While sitting on the operator s seat 1 Check the HST pedal brake pedals 2 Check the parking b...

Page 39: ...fore changing the oil filter cartridge Allow engine to cool down sufficiently oil can be hot and may cause burns 1 Remove the oil filter cartridge with the filter wrench 2 Apply a slight coat of oil o...

Page 40: ...new cartridge gasket 4 To install the new cartridge screw it in by hand Over tightening may cause deformation of rubber gasket 5 After the new cartridge has been replaced the transmission fluid level...

Page 41: ...ely after changing the transmission oil Keeping the engine at medium speed for a few minutes to prevents damage to the transmission Do not mix different brands oil together 9Y1210003GEG0011US0 Transmi...

Page 42: ...d length within acceptable limits 4 Retighten the lock nut 2 5 After adjusting release the clutch pedal and check the clearance B If adjustment is needed adjust the clearance B with the stopper bolt 3...

Page 43: ...ust not crank 9Y1210003GEG0013US0 Checking Engine Start System Manual Transmission Model without OPC CAUTION Do not allow anyone near the tractor while testing If the tractor does not pass the test do...

Page 44: ...t the shuttle shift lever to the forward or reverse position 2 Fully depress the clutch pedal and turn the key to START position 3 The engine must not crank Test Switch for the PTO ON OFF lever 1 Shif...

Page 45: ...speed control pedal HST pedal 1 Depress the speed control pedal HST pedal 2 Turn the key to START position 3 The engine must not crank Test Switch for the PTO clutch lever 1 Place the speed control pe...

Page 46: ...nal a B3030HD Serial No 90000 and below B2530HD Serial No 90000 and below B2530D Serial No 50000 and below B2230HD Serial No 90000 and below B2230D Serial No 50000 and below B1830D Serial No 50000 and...

Page 47: ...US0 Tightening torque Front wheel mounting nut 77 to 90 N m 7 9 to 9 2 kgf m 57 to 66 lbf ft Cotter setting bolt and nut 123 to 147 N m 12 6 to 15 0 kgf m 90 8 to 108 lbf ft Rear wheel hub mounting nu...

Page 48: ...on page G 8 9Y1210003GEG0019US0 Adjusting Clutch Pedal Free Travel 1 Stop the engine and remove the key 2 Slightly depress the clutch pedal and measure free travel at the top of pedal stroke 3 If adj...

Page 49: ...lectrolyte away from eyes hands and clothes If you are spattered with it wash it away completely with water immediately and get medical attention Wear eye protection and rubber gloves when working aro...

Page 50: ...slow charge the battery connect the battery positive terminal to the charger positive terminal and the negative to the negative then recharge in the normal manner 4 A boost charge is only for emergen...

Page 51: ...ndary element 4 as well Once a year or after every six times of cleaning whichever comes first IMPORTANT The air cleaner uses a dry element never apply oil Do not run the engine with filter element re...

Page 52: ...the fuel pump and injection nozzles are subject to premature wear To prevent this be sure to clean the fuel filter bowl and element periodically 9Y1210003GEG0023US0 Adjusting Fan Belt Tension CAUTION...

Page 53: ...ure free travel at the top of pedal stroke 3 If adjustment is needed loosen the lock nut and turn the turnbuckle to adjust the rod length within acceptable limits 4 Retighten the lock nut 9Y1210003GEG...

Page 54: ...brake lever gets locked at the its 4th or 5th notch 9 Install the right and left tires NOTE After adjusting the parking brake lever free travel Right and left parking brake for even braking With the p...

Page 55: ...ket 4 After the new cartridge has been replaced the engine oil normally decrease a little Thus see that the engine oil does not leak through the seal and be sure to read the oil level on the dipstick...

Page 56: ...d of the causes of overheating according to the manual see TROUBLESHOOTING section and then start again the engine 9Y1210003GEG0029US0 Checking Intake Air Line 1 Check to see that hoses 1 and hose cla...

Page 57: ...knob bolts 3 and pull out the fresh air filter 1 2 Blow air from the opposite direction to the filter s normal air flow IMPORTANT Do not hit the fresh air filter If the fresh air filter becomes defor...

Page 58: ...2230 B2530 B3030 WSM G 33 Checking the Air Conditioner Condenser CABIN 1 Check air conditioner condenser 1 to be sure that it is clean of debris 9Y1210003GEG0035US0 1 Air Conditioner Condenser KiSC is...

Page 59: ...tractor immediately after changing the transmission oil Keeping the engine at medium speed for a few minutes to prevents damage to the transmission Do not mix different brands oil together 9Y1210003G...

Page 60: ...aulic system Use only a genuine KUBOTA filter or its equivalents 9Y1210003GEG0037US0 Changing Front Axle Case Oil 1 Park the tractor on a firm flat and level surface 2 To drain the used oil remove the...

Page 61: ...ctory specifications adjust with the adjusting screw 2 After applying liquid gasket Three Bond 1206D or equivalent to the thread portion of the adjusting screw 2 to prevent front axle oil from leaking...

Page 62: ...serious damage to the fuel system use only a KUBOTA genuine fuel filter element When the fuel filter bowl has been removed fuel stops flowing from the fuel tank If the fuel tank is almost full however...

Page 63: ...nterclockwise to see if the piston is at the compression top dead center or the overlap position Now referring to the table below readjust the valve clearance The piston is at the compression top dead...

Page 64: ...EVERY 1500 HOURS Fuel Injection Pressure 1 Set the injection nozzle to a nozzle tester 2 Slowly move the tester handle to measure the pressure at which fuel begins jetting out from the nozzle 3 If th...

Page 65: ...gine with filter element removed Be sure to refit the dust cup with the arrow on the rear of cup upright If the dust cup is improperly fitted evacuator valve will not function and dust will adhere to...

Page 66: ...e clamps are tight and not damaged 2 If pipes hoses and clamps are found worn and damaged replace them 9Y1210003GEG0045US0 Checking the CAB Isolation Cushion CABIN 1 Check the cushion 1 for any breaka...

Page 67: ...and clamp bands 2 are found worn or damaged replace them at once NOTE If the fuel line is replaced be sure to properly bleed the fuel system Refer to page G 46 9Y1210003GEG0048US0 Replacing Intake Ai...

Page 68: ...tor cap Install the radiator cap securely 7 Fill with coolant up to the FULL mark of recovery tank 8 Start and operate the engine for few minutes 9 Stop the engine remove the key and let cool 10 Check...

Page 69: ...evant environmental protection regulations when disposing of anti freeze If it freezes coolant can damage the cylinders and radiator If the ambient temperature falls below 0 C 32 F or before a long te...

Page 70: ...the engine may fail to perform as specified 6 When the LLC is mixed do not employ any radiator cleaning agent The LLC contains anticorrosive agent If mixed with the cleaning agent sludge may build up...

Page 71: ...tractor is equipped with drain plug 1 under the clutch housing After operating in rain snow or tractor has been washed water may get into the clutch housing 1 Remove the drain plug 1 and drain the wa...

Page 72: ...ow this procedure may result in serious damage to the tractor electrical system Refer to troubleshooting section of this manual If any of them should blow replace with a new one of the same capacity P...

Page 73: ...rocedure may result in serious damage to the tractor electrical system Refer to troubleshooting section of this manual If any of them should blow replace with a new one of the same capacity Protected...

Page 74: ...ooting section of this manual If any of them should blow replace with a new one of the same capacity Protected Circuit 9Y1210003GEG0058US0 FUSE NO ID LABEL CAPACITY A Protected circuit 1 10 Key stop 2...

Page 75: ...of this manual If any of them should blow replace with a new one of the same capacity Protected Circuit 9Y1210003GEG0059US0 FUSE NO ID LABEL CAPACITY A Protected circuit 1 25 Head light Horn Key stop...

Page 76: ...b 9Y1210003GEG0060US0 Light Capacity Head lights 40 W 45 W Tail light 5 W Turn signal Hazard light 21 W Instrument panel light 1 7 W Hazard light switch indicator 0 6 W Brake stop light 21 W Front pos...

Page 77: ...1US0 Light Capacity Head lights 40 W 45 W Tail light 10 W Turn signal Hazard light 21 W Instrument panel light 1 7 W Hazard light switch indicator 0 6 W Work light 35 W Brake stop light 21 W Front pos...

Page 78: ...the following conditions Engine speed About 1500 min 1 rpm Temperature control lever Maximum cooling position leftmost Fan switch Highest blow HI Air conditioner switch ON 2 Look into the sight glass...

Page 79: ...ston with piston rings into the cylinder WSM000001GEG0012US0 Piston Ring Tool Code No 07909 32121 Application Use exclusively for removing or installing the piston ring with ease WSM000001GEG0013US0 D...

Page 80: ...nd leaks from cooling system Remarks Adaptor 1 BANZAI Code No RCT 2A 30S WSM000001GEG0017US0 Connecting Rod Alignment Tool Code No 07909 31661 Application Use to check the connecting rod alignment App...

Page 81: ...m referring to the figure WSM000001GEG0026US0 Valve Guide Replacing Tool Application Use to press out and press fit the valve guide NOTE The following special tools are not provided so make them refer...

Page 82: ...00 kgf cm2 4267 psi B Copper gasket C Flange Material Steel D Hex nut 27 mm 1 1 in across the plat E Injection pipe F PF 1 2 G 5 mm 0 2 in H 17 mm dia 0 67 in dia I 8 mm dia 0 3 in dia J 1 0 mm 0 039...

Page 83: ...US0 A 135 mm 5 31 in B 72 mm 2 8 in C 40 mm radius 1 6 in radius D 10 mm 0 39 in E 20 mm 0 79 in F 20 mm dia 0 79 in dia G 56 80 to 56 90 mm dia 2 237 to 2 240 in dia H 51 80 to 51 90 mm dia 2 040 to...

Page 84: ...7US0 A 28 5 to 28 8 mm 1 12 to 1 13 in B 3 5 to 3 7 mm 0 14 to 0 15 in C 28 5 to 28 8 mm 0 12 to 1 13 in D 38 mm dia 1 50 in dia E 28 5 to 29 0 mm dia 1 12 to 1 14 in dia F 47 5 mm 1 87 in G 17 5 mm 0...

Page 85: ...Application This allows easy testing of hydraulic system WSM000001GEG0036US0 Adaptor Set for Flow Meter Code No 07916 54031 Application Use for testing the hydraulic system WSM000001GEG0037US0 1 Gaug...

Page 86: ...This tool can be used for B30 series BX50 series and BX24 tractor 9Y1210003GEG0069US0 A 0 51 rad 30 B 29 95 to 29 98 mm dia 1 179 to 1 180 in dia C 35 mm 1 38 in D 20 mm 0 79 in C1 Chamfer 1 mm 0 039...

Page 87: ...mm dia 1 97 in dia R 19 0 mm 0 748 in e 1 mm 0 039 in F 10 0 mm dia 0 39 in dia S 17 0 mm 0 669 in f 6 5 mm 0 26 in G 9 10 to 9 30 mm dia 0 359 to 0 366 in T 10 0 mm 0 394 in g Chamfer 0 5 mm 0 02 in...

Page 88: ...or gas leak testing the air conditioning system WSM000001GEG0043US0 Vacuum Pump Code No DENSO 95046 00130 AC220V DENSO 95046 00140 AC240V Application Use for evacuating the air conditioning system WSM...

Page 89: ...sen and tighten the magnet clutch mounting nut NOTE This special tool is not provided so make it referring to the figure 9Y1210003GEG0072US0 A 125 mm 4 92 in H 4 52 rad 120 B 40 mm dia 1 57 in dia I R...

Page 90: ...0084US0 Stopper Bolt for A C Compressor Application Use with the stopper magnet clutch NOTE This special tool is not provided so make it referring to the figure 9Y1210003GEG0085US0 A 12 mm 0 47 in B 5...

Page 91: ...of front weights Dual Tires Dual tires are not approved 9Y1210003GEG0073US0 Tire sizes Inflation Pressure Rear 8 16 4PR 160 kPa 1 6 kgf cm2 23 psi 9 5 16 4PR 140 kPa 1 4 kgf cm2 20 psi 9 5 18 4PR 140...

Page 92: ...and keep them tight 1 Check wheel bolts and nuts regularly especially when new If they are loose tighten them as follows 9Y1210003GEG0074US0 Tightening torque Front wheel mounting nut 77 to 90 N m 7...

Page 93: ...of the tires face outward B1830 B2230 and B2530 B3030 9Y1210003GEG0075US0 Models B1830 B2230 B2530 B1830 B2230 B2530 Tire 6 12B Farm 6 12 Farm 6 00 12 Farm 22 8 50 12 Turf 24 8 50 12 Turf Tread 835 mm...

Page 94: ...bolt 2 Remove the snap pin and wheel hub pin 3 Change the tread to the desired position 4 Re set the wheel hub pin snap pin and cotter pin bolt B1830 B2230 and B2530 9Y1210003GEG0076US0 Models B1830 B...

Page 95: ...fter according to service interval Insert the bolt from the indented side of the cotter as shown 9Y1210003GEG0077US0 B3030 9Y1210003GEG0078US0 Tightening torque Rear wheel hub nut 123 to 147 N m 12 6...

Page 96: ...alcium chloride solution do not pour water over calcium chloride since this results in chemical reaction which will cause high temperature Instead add a small amount of calcium chloride to the water a...

Page 97: ...OTE Once injection is completed reset the air valve and pump air into the tire to the specified pressure Liquid Ballast in Rear Tires Liquid weight pen tire 75 filled 9Y1210003GEG0081US0 Tire sizes 9...

Page 98: ...ched to the bumper See your implement operator s manual for required number of weights NOTE For installation of up to three weights Besides the weight mounting bolt kit s are required for mounting the...

Page 99: ...Implement size may vary depending on soil operating conditions 9Y1210003GEG0083US0 Tread max width Lower link end max loading weight W0 Front Rear B1830 835 mm 32 9 in 1025 mm 40 4 in 970 kg 2139 lbs...

Page 100: ...1 ENGINE KiSC issued 05 2012 A...

Page 101: ...1 Draining Lubricants and Coolant 1 S20 2 Separating Cabin from Tractor Body CABIN 1 S23 3 Separating Engine and Front Case from Tractor 1 S30 3 DISASSEMBLING AND ASSEMBLING 1 S39 1 External Component...

Page 102: ...shaft piston cylinder or bearing Repair 1 S45 to 1 S50 Compression leak from cylinder Replace head gasket tighten cylinder head screw glow plug and nozzle holder 1 S41 1 S42 Improper valve timing Corr...

Page 103: ...jection Replace injection pump 1 S44 Deficient nozzle injection Repair or replace nozzle 1 S18 to 1 S19 Compression leak Replace head gasket tighten cylinder head screw glow plug and nozzle holder 1 S...

Page 104: ...tive Repair or replace 1 S66 High Oil Pressure Different type of oil Use specified type of oil G 8 Relief valve defective Replace Engine Overheated Engine oil insufficient Replenish G 8 Fan belt broke...

Page 105: ...0098 in 0 40 mm 0 0157 in Valve Stem to Valve Guide Valve Stem Valve Guide Clearance O D I D 0 035 to 0 065 mm 0 0014 to 0 0025 in 6 960 to 6 975 mm 0 2741 to 0 2746 in 7 010 to 7 025 mm 0 2760 to 0 2...

Page 106: ...13 to 0 0045 in 0 036 to 0 114 mm 0 0014 to 0 0045 in 0 034 to 0 116 mm 0 0013 to 0 0046 in 0 033 to 0 117 mm 0 0013 to 0 0046 in 0 15 mm 0 0059 in 0 15 mm 0 0059 in 0 15 mm 0 0059 in 0 15 mm 0 0059 i...

Page 107: ...D I D 0 014 to 0 038 mm 0 00055 to 0 00150 in 22 002 to 22 011 mm 0 8662 to 0 8666 in 22 025 to 22 040 mm 0 8671 to 0 8677 in 0 15 mm 0 0059 in Piston Pin to Small End Bushing Spare Parts Small End B...

Page 108: ...0037 in 47 934 to 47 950 mm 1 8872 to 1 8878 in 47 984 to 48 029 mm 1 8891 to 1 8909 in 0 20 mm 0 0079 in Crankshaft to Crankshaft Bearing 3 Crankshaft Journal Crankshaft Bearing 3 Oil Clearance O D I...

Page 109: ...psi Inner Rotor to Outer Rotor Clearance 0 06 to 0 18 mm 0 0024 to 0 0071 in Outer Rotor to Pump Body Clearance 0 100 to 0 180 mm 0 0039 to 0 0071 in Inner Rotor to Cover Clearance 0 025 to 0 075 mm...

Page 110: ...Delivery Valve Fuel Tightness 10 seconds or more for pressure falling from 13 73 12 75 MPa from 140 130 kgf cm2 from 1991 1849 psi 5 seconds or more for pressure falling from 13 73 12 75 MPa from 140...

Page 111: ...S0 Item N m kgf m lbf ft Steering wheel mounting nut 29 4 to 49 0 3 0 to 5 0 21 7 to 36 2 Cabin mounting bolts and nuts M14 100 to 120 10 2 to 12 2 73 8 to 88 5 Cabin support mounting bolt 100 to 110...

Page 112: ...3 Rocker arm bracket nuts M7 1 0 21 6 to 26 5 2 2 to 2 7 15 9 to 19 5 Cylinder head screw M10 1 25 63 7 to 68 6 6 5 to 7 0 47 0 to 50 6 Fan drive pulley screw M14 1 5 235 4 to 245 2 24 0 to 25 0 173...

Page 113: ...7 If the measurement is below the allowable limit apply a small amount of oil to the cylinder wall through the glow plug hole or nozzle hole and measure the compression pressure again 8 If the compre...

Page 114: ...see if the piston is at the compression top dead center or the overlap position Now referring to the table below readjust the valve clearance The piston is at the compression top dead center when both...

Page 115: ...sure of both idling and rated speeds 3 If the oil pressure is less than the allowable limit check the following Engine oil insufficient Oil pump defective Oil strainer clogged Oil filter cartridge clo...

Page 116: ...rn out and deeply sunk in the pulley groove replace it 9Y1210003ENS0011US0 Thermostat Valve Opening Temperature 1 Suspend the thermostat in the water by a string with its end inserted between the valv...

Page 117: ...on replace the radiator cap 9Y1210003ENS0014US0 Radiator Water Leakage 1 Pour a specified amount of water into the radiator 2 Set a radiator tester 1 and an adaptor 2 and raise the water pressure to t...

Page 118: ...heck the thickness of the shims 9Y1210003ENS0016US0 Fuel Tightness of Pump Element 1 Remove the engine stop solenoid 2 Remove the injection pipes and glow plugs 3 Install the injection pump pressure t...

Page 119: ...1991 to 1849 psi 9 If the measurement is less than allowable limit replace the pump with new one or repair with a Kubota authorized pump service shop NOTE Never try to disassemble the injection pump a...

Page 120: ...ith 0 01 mm 0 0004 in difference of adjusting washer thickness Approx 235 kPa 2 4 kgf cm2 34 psi 9Y1210003ENS0020US0 Valve Seat Tightness 1 Set the injection nozzle to a nozzle tester 2 Raise the fuel...

Page 121: ...5 Fill new oil up to upper line on the dipstick 2 IMPORTANT When using an oil of different manufacture or viscosity from the previous one remove all of the old oil Never mix two different types of oi...

Page 122: ...o 4 LUBRICANTS FUEL AND COOLANT on page G 8 Never work the tractor immediately after changing the transmission oil Keep the engine at medium speed for a few minutes to prevents damage to the transmiss...

Page 123: ...lant 3 After all coolant is drained close the drain cock 2 IMPORTANT Do not start engine without coolant Use clean fresh water and anti freeze to fill the radiator and recovery tank When the anti free...

Page 124: ...equipment refrigerant and refrigerant oils with R12 systems to prevent compressor damage CAUTION Protect fingers with cloth against frostbite by refrigerant when disconnecting the hose to the chargin...

Page 125: ...rigerant clamps 12 13 5 Dismount the receiver the condenser with the refrigerant hose 1 not to bend or not to damage the refrigerant pipes connected to the receiver When reassembling Connect the batte...

Page 126: ...heel with a steering wheel puller Code No 07916 51090 4 Remove the bolts 2 and the front wiper cover 1 5 Disconnect the coupler 6 Remove the meter panel 5 7 Disconnect the hour meter cable 8 from the...

Page 127: ...e bolts 2 and the HST pedal 1 2 Remove the grip 4 Remove the differential lock pin at the right side rear axle shaft 3 Remove the bolts 6 and the seat front cover 5 from the fenders and the steps 9Y12...

Page 128: ...e the bolts and the step 2 4 Remove the bolt and the stopper 5 5 Remove the cabin mounting bolts and the nuts When reassembling 9Y1210003ENS0033US0 Tightening torque Cabin mounting bolts and nuts M14...

Page 129: ...k 4 4 Disconnect the cabin connector 5 5 After disconnecting the leads from tail light body 6 remove the tail light body 6 from the fenders 6 Remove the cabin mounting bolts and nuts 7 When reassembli...

Page 130: ...id jacks When reassembling If the beam shield 1 is damaged replace it with a new one 9Y1210003ENS0035US0 Removing Cabin Support 1 Remove the cabin support R H 1 and the cabin support L H 2 When reasse...

Page 131: ...gs 1 3 5 IMPORTANT Use only KUBOTA UDT oil Use of other oils may damage the transmission or hydraulic system Refer to 4 LUBRICANTS FUEL AND COOLANT on page G 8 Never work the tractor immediately after...

Page 132: ...1210003ENS0039US0 Battery 1 Disconnect the battery negative cable first 2 Disconnect the battery positive cable second 3 Remove the battery 1 4 Remove the front hitch When reassembling Connect the bat...

Page 133: ...very pipes 9Y1210003ENS0041US0 Hydraulic Hoses from Power Steering Cylinder 1 Disconnect the hydraulic hoses 1 3 from the power steering cylinder 2 2 Removing the snap pin 4 and disconnect the bi spee...

Page 134: ...ompletely 9Y1210003ENS0043US0 HST Pedal and Floor Mat 1 Remove the HST pedal mounting bolts 2 2 Remove the HST pedal 1 3 Remove the floor mat 9Y1210003ENS0044US0 Front Cover 1 Remove the front cover 1...

Page 135: ...onnect the hour meter cable and wiring harness connectors 6 Remove the meter panel 1 not to damage with the steering shaft 4 7 Remove the shuttle lever 5 8 Remove the panel lower cover 6 When reassemb...

Page 136: ...ect the leads 1 from the fuel tank 2 2 Disconnect the overflow hoses from the fuel tank 2 3 Remove the shutter plate 6 and the fuel tank 2 9Y1210003ENS0047US0 1 Lead 2 Fuel Tank 3 Steering Post Stay 4...

Page 137: ...ivery pipe mounting nuts 4 Slide the hydraulic delivery pipe 5 Loosen the hose band 7 6 Disconnect the suction hose 8 from the hydraulic pump When reassembling Apply the liquid gasket Three Bond 1206D...

Page 138: ...olts 4 Remove the sub frames 3 7 9Y1210003ENS0050US0 1 Bolt 2 Step R H 3 Step L H 4 Nut Tightening torque Sub frame mounting bolt for aluminum M10 39 3 to 45 1 N m 4 0 to 4 6 kgf m 29 0 to 33 2 lbf ft...

Page 139: ...versal joint securely Tighten the docking bolts between the engine and the front case securely 9Y1210003ENS0051US0 Separating Front Axle from Engine 1 Remove the exhaust pipe 2 Disconnect the radiator...

Page 140: ...ace IMPORTANT When installing the fan belt 6 be sure to adjust the fan belt tension 9Y1210003ENS0053US0 Fan belt deflection A Factory specification 7 to 9 mm 0 28 to 0 35 in Air conditioner fan belt d...

Page 141: ...h is bigger than the heat seal hole Approx 6 mm 1 4 in 1 Drive screw driver lightly into the heat seal hole 2 Turn screw driver three or four times each way 3 While turning the screw driver slowly pul...

Page 142: ...et with new one When mounting the gasket set it to the pin pipe holes Take care not to mount it reversely The cylinder head should be free of scratches and dust Install the cylinder head using care no...

Page 143: ...n of valve and valve guide 9Y1210003ENS0060US0 Thermostat Assembly 1 Remove the thermostat cover mounting screws 1 and remove the thermostat cover 2 2 Remove the thermostat assembly 4 When reassemblin...

Page 144: ...Position B L 13 mm 0 51 in Water Pipe Mounting C L 10 mm 0 39 in D Nut L Length between the mounting bolt and the gear case surface 9Y1210003ENS0063US0 Engine Stop Solenoid and Speed Control Plate 1 R...

Page 145: ...pump insert the control rack pin 2 firmly into the groove 6 of the thrust lever of fork lever NOTE The sealant is applied to both sides of the soft metal gasket shim The liquid gasket is not required...

Page 146: ...Tighten the idle gear 2 bearing nut and the idle gear lock nut to the specified tightening torque IMPORTANT When replacing the ball bearing of governor shaft securely fit the ball bearing 18 to the cr...

Page 147: ...h screw hole Cut the nozzle of the liquid gasket container at its second notch Apply liquid gasket about 5 mm 0 2 in thick Within 20 minutes after the application of fluid sealant reassemble the compo...

Page 148: ...on the connecting rod to the injection pump IMPORTANT Do not change the combination of cylinder and piston Make sure of the position of each piston by marking For example mark 1 on the No 1 piston Wh...

Page 149: ...11 Apply engine oil to the piston pin When installing the connecting rod to the piston immerse the piston in 80 C 176 F oil for 10 to 15 minutes and insert the piston pin to the piston When installin...

Page 150: ...correct directions Install the bearing case cover 6 to position the casting mark UP a on it upward Apply engine oil to the oil seal 5 lip and take care that it is not rolled when installing Tighten t...

Page 151: ...passage in the main bearing cases Apply clean engine oil on the bearings Install the main bearing case assemblies in original positions Since diameters of main bearing cases vary install them in order...

Page 152: ...il clearance between the crankpin and the crankpin bearing and between the piston pin and the small end bushing NOTE After checking the top clearance be sure to assemble the cylinder head with a new c...

Page 153: ...ylinder head 9Y1210003ENS0078US0 Clearance between Valve Stem and Valve Guide 1 Remove carbon from the valve guide section 2 Measure the valve stem O D with an outside micrometer 3 Measure the valve g...

Page 154: ...ment 9Y1210003ENS0080US0 Valve Seating 1 Coat the valve face lightly with prussian blue and put the valve on its seat to check the contact 2 If the valve does not seat all the way around the valve sea...

Page 155: ...n and visually recheck the contact between the valve and the seat 5 Repeat steps 3 and 4 until the correct contact is achieved 6 Continue lapping until the seated rate becomes more than 70 of the tota...

Page 156: ...ce between Rocker Arm and Rocker Arm Shaft 1 Measure the rocker arm shaft O D with an outside micrometer 2 Measure the rocker arm I D with an inside micrometer and then calculate the oil clearance 3 I...

Page 157: ...e gear 4 If the oil clearance is proper replace the gear 9Y1210003ENS0089US0 Push rod alignment Allowable limit 0 25 mm 0 0098 in Oil Clearance between tappet and tappet guide bore Factory specificati...

Page 158: ...tor with its tip on the intermediate journal 3 Measure the camshaft alignment 4 If the measurement exceeds the allowable limit replace the camshaft 9Y1210003ENS0092US0 Cam Height 1 Measure the height...

Page 159: ...ushing replacing tool until it is flush with the end of the idle gear 9Y1210003ENS0095US0 3 Piston and Connecting Rod Piston Pin Bore I D 1 Measure the piston pin bore I D in both the horizontal and v...

Page 160: ...o them 2 Using a small end bushing replacing tool press in a new bushing service parts taking care to see that the connecting rod oil hole matches the bushing hole 9Y1210003ENS0098US0 Oil clearance be...

Page 161: ...fica tion 0 25 to 0 40 mm 0 0098 to 0 0157 in Allowable limit 1 25 mm 0 0492 in Second ring Factory specifica tion 0 25 to 0 40 mm 0 0098 to 0 0157 in Allowable limit 1 25 mm 0 0492 in Oil ring Factor...

Page 162: ...ce it with an oversize one referring to the table and figure Reference Oversize dimensions of crankshaft journal 9Y1210003ENS0102US0 Crankshaft Alignment 1 Support the crankshaft with V blocks on the...

Page 163: ...d screws are tightened Reference Undersize dimensions of crankpin 9Y1210003ENS0104US0 Oil clearance between crankpin and crankpin bearing Factory specification 0 029 to 0 091 mm 0 0011 to 0 0036 in Al...

Page 164: ...new bearing 1 2 so that its seam 1 directs toward the exhaust manifold side See figure 9Y1210003ENS0106US0 Oil clearance between crankshaft journal and crankshaft bearing 1 Factory specification 0 034...

Page 165: ...rnal O D Intermediate Factory specification 47 934 to 47 950 mm 1 8872 to 1 8878 in Crankshaft bearing 2 I D Factory specification 47 984 to 48 029 mm 1 8891 to 1 8909 in Oil clearance between cranksh...

Page 166: ...ylinder is worn beyond the allowable limit replace the cylinder block with a new one 9Y1210003ENS0109US0 Cylinder I D Factory specifica tion D905 E2 72 000 to 72 019 mm 2 8346 to 2 8354 in D1005 E2 76...

Page 167: ...otor assembly 9Y1210003ENS0111US0 Clearance between Rotor and Cover 1 Put a strip of plastigage onto the rotor face with grease 2 Install the cover and tighten the screws 3 Remove the cover carefully...

Page 168: ...2 CLUTCH KiSC issued 05 2012 A...

Page 169: ...CONTENTS 1 STRUCTURE 2 M1 1 MANUAL TRANSMISSION MODEL 2 M1 2 CLUTCH OPERATION 2 M2 1 Clutch Engaged 2 M2 2 Clutch Disengaged 2 M2 MECHANISM KiSC issued 05 2012 A...

Page 170: ...ed by the diaphragm spring 5 installed in the pressure plate assembly 11 Then the torque is transmitted to the transmission via the clutch shaft 10 When the clutch pedal is depressed the clutch releas...

Page 171: ...ed to move the clutch rod 7 Then the release fork 6 pushes the release hub 9 and release bearing 8 toward the flywheel Simultaneously the release bearing 8 pushes the diaphragm spring 5 As the pressur...

Page 172: ...TIGHTENING TORQUES 2 S3 4 CHECKING DISASSEMBLING AND SERVICING 2 S4 1 CHECKING AND ADJUSTING 2 S4 2 DISASSEMBLING AND ASSEMBLING 2 S5 1 Separating Engine From Clutch housing 2 S5 2 Separating Clutch...

Page 173: ...clutch cover worn or broken Replace clutch cover assembly 2 S12 2 S12 Chattering Grease or oil on clutch disc facing Replace 2 S11 Clutch disc or pressure plate warped Replace 2 S12 Clutch disc boss...

Page 174: ...t Clutch Pedal Free Travel 10 to 17 mm 0 78 to 1 18 in Clearance between Bolt and Housing Case Clearance B Approx 8 5 mm 0 33 in Clutch Disc and Clutch Shaft Backlash Displacement around Disc Edge 2 0...

Page 175: ...t M10 for aluminum 39 3 to 45 1 4 0 to 4 6 29 0 to 33 2 Sub frame mounting bolt M12 for aluminum 62 8 to 72 5 6 4 to 7 4 46 3 to 53 5 Sub frame mounting bolt for ordinary material M12 77 5 to 90 2 7 9...

Page 176: ...ent is not within the factory specifications loosen the lock nut 2 and adjust the clutch pedal rod 1 length 3 Retighten the lock nut 2 4 After adjusting release the clutch pedal and check the clearanc...

Page 177: ...transmission oil Keeping the engine at medium speed for a few minutes to prevents damage to the transmission Do not mix different brands oil together 9Y1210003CLS0005US0 Transmission fluid capacity B1...

Page 178: ...ords disconnect the grounding cord first When connecting positive cord first 9Y1210003CLS0006US0 Hydraulic Hoses from Power Steering Cylinder 1 Disconnect the hydraulic hoses 1 3 from the power steeri...

Page 179: ...lever grip 3 and the steering boot 2 5 Disconnect the hour meter cable and wiring harness connectors 6 Remove the meter panel 1 not to damage with the steering shaft 4 7 Remove the shuttle lever 5 8...

Page 180: ...ect the leads 1 from the fuel tank 2 2 Disconnect the overflow hoses from the fuel tank 2 3 Remove the shutter plate 6 and the fuel tank 2 9Y1210003CLS0010US0 1 Lead 2 Fuel Tank 3 Steering Post Stay 4...

Page 181: ...raulic pump When reassembling Apply the liquid gasket Three Bond 1206D or equivalent to the joint face of the key stop solenoid and the engine 9Y1210003CLS0011US0 Steps 4 cylinder Engine ROPS Model 1...

Page 182: ...pline between the front wheel drive shaft and the universal joint securely Tighten the docking bolts between the engine and the front case securely 9Y1210003CLS0014US0 Tightening torque Sub frame moun...

Page 183: ...ow grease and oil on the clutch disc facing 9Y1210003CLS0015US0 Clutch and Clutch Release Fork 1 Remove the external snap ring 2 at the end of clutch rod shaft 1 and remove the clutch release fork 5 a...

Page 184: ...e clearance with a feeler gauge at several points 2 If the clearance exceeds the allowable limit replace it 3 When the pressure plate is worn around its outside and its inside surface only is in conta...

Page 185: ...3 TRANSMISSION KiSC issued 05 2012 A...

Page 186: ...ction 3 M10 2 Shuttle Gear Shift Section 3 M11 4 HYDROSTATIC TRANSMISSION 3 M12 1 STRUCTURE 3 M12 2 PUMP AND MOTOR 3 M14 3 OIL FLOW AND VALVES 3 M15 4 CONTROL LINKAGE 3 M22 5 CRUISE CONTROL 3 M23 1 CR...

Page 187: ...210003TRM0001US0 1 Main Clutch Section 2 Main Gear Shift Section 3 Shuttle Shift Section 4 Mechanical PTO Clutch Section 5 Range Gear Shift Section 6 Differential Gear Section 7 Rear PTO Gear Section...

Page 188: ...Section 2 Main Gear Shift Section 3 Shuttle Shift Section 4 Mechanical PTO Clutch Section 5 Range Gear Shift Section 6 Differential Gear Section 7 Rear PTO Gear Section 8 Mid PTO Gear Section 9 Front...

Page 189: ...0003US0 1 Main Clutch Section 2 Main Gear Shift Section 3 Shuttle Shift Section 4 Mechanical PTO Clutch Section 5 Range Gear Shift Section 6 Differential Gear Section 7 Rear PTO Gear Section 8 Front W...

Page 190: ...1 Hydrostatic Transmission HST Section 2 Hydrostatic PTO Section 3 Differential Gear Section 4 Rear PTO Gear Section 5 Range Gear Section 6 Mid PTO Gear Section 7 Front Wheel Drive Gear Section 8 Bi...

Page 191: ...haft 9Y1210003TRM0005US0 1 Flywheel 2 Clutch Housing 3 Steel Plate 4 Clutch Shaft 5 Oil Seal 6 Ball Bearing 7 Oil Seal 8 28T 28T Front Wheel Drive Shaft 1 9 Front Wheel Drive Shaft 2 10 24T Front Whee...

Page 192: ...to Left or Right the Bi Speed rod 2 connected to the left bevel gear case is pulled The Bi Speed Turn shift shaft 3 is rotated At this time hydraulic oil from the pump port enter to the Bi Speed clut...

Page 193: ...ed to the left bevel gear case is not pulled The Bi Speed Turn shift shaft 3 is kept to OFF position At this time hydraulic oil from the pump port does not enter to the Bi Speed Turn ON OFF shift shaf...

Page 194: ...del 9Y1210003TRM0010US0 1 Bi Speed Turn Clutch 2 Bi Speed Turn Valve 2 3 Bi Speed Turn Valve 1 4 Regulating Valve 5 Power Steering Controller P From Pump Port 1 Bi Speed Turn Clutch 2 Bi Speed Turn Va...

Page 195: ...gear 1 and to the front drive shaft 3 24T 9 9Y1210003TRM0011US0 3 Bi Speed Turn Disengaged When the front wheel steering angle is below 0 714 rad 42 the Bi Speed Turn is disengaged Since the pressuri...

Page 196: ...er 3 meshes to the 32T gear 9 of the 15T 32T 26T 13T shaft 5 The power is transmitted as follows First shift shaft 1 23T F2 gear shifter 3 32T gear 9 15T 32T 26T 13T shaft 5 3rd Speed Gear The 23T F2...

Page 197: ...5 meshes to the 28T gear 4 The power is transmitted as follows 15T 32T 26T 13T shaft 2 15T gear 2 28T gear 4 shifter 5 shuttle shaft Hi Low range gear section Reverse When shifting the shuttle lever t...

Page 198: ...e displacement piston pump fixed displacement piston motor and valve system 9Y1210003TRM0015US0 1 Input Shaft Pump Shaft 2 Housing 3 Check and High Pressure Relief Valve Reverse 4 Center Section 5 Tru...

Page 199: ...k Motor 2 Piston 3 Thrust Collar 4 Motor Shaft 5 Retainer Plate 6 Thrust Collar 7 Pump Shaft 8 Variable Swashplate 9 Piston 10 Cylinder Block Pump 11 Charge Relief Valve 12 Needle Bearing 13 Valve Pla...

Page 200: ...ump as the cylinder rotates pistons move across the sloping face of swashplate and slide in or out of their cylinder bores The oil forced out by the pump pistons causes the motor pistons to slide out...

Page 201: ...eck and High Pressure Relief Valve for Forward 8 Check and High Pressure Relief Valve for Reverse 9 Neutral Valve for Forward 10 Neutral Valve for Reverse 11 Independent PTO Control Valve 12 Oil Coole...

Page 202: ...Then oil in the main oil circuit of the HST needs to be supplied a want So all of oil fed from hydraulic pump flow to hydraulic transmission for charging and cooling The charge oil aids smooth operati...

Page 203: ...sure Relief Valve for Reverse 9 Neutral Valve for Forward 10 Neutral Valve for Reverse 11 Independent PTO Control Valve 12 Oil Cooler 13 Power Steering 14 Hydraulic Pump for Power Steering Independent...

Page 204: ...al the variable swashplate is right angles to the pump pistons And the pump pistons only rotate with cylinder block pump without reciprocating Since the oil is not being pumped to the motor the cylind...

Page 205: ...sure Relief Valve for Reverse 9 Neutral Valve for Forward 10 Neutral Valve for Reverse 11 Independent PTO Control Valve 12 Oil Cooler 13 Power Steering 14 Hydraulic Pump for Power Steering Independent...

Page 206: ...pressure oil from the pump cylinder block enters to motor port C the pistons which align with port C are pushed against the swashplate and slide down the inclined surface Then the output shaft rotate...

Page 207: ...sure Relief Valve for Reverse 9 Neutral Valve for Forward 10 Neutral Valve for Reverse 11 Independent PTO Control Valve 12 Oil Cooler 13 Power Steering 14 Hydraulic Pump for Power Steering Independent...

Page 208: ...pressure and retunes to the pump port A 9Y1210003TRM0021US0 4 CONTROL LINKAGE The HST pedal 5 and the trunnion shaft 4 of the variable swashplate are linked with the speed control rod 7 and the neutra...

Page 209: ...the pictures And when the cruise control lever 2 is set to the desired position the cruise lock 1 is locked to the cruise lock 2 10 and the travelling speed is held to the desired speed 9Y1210003TRM00...

Page 210: ...s changed from ON to OFF position Since the cruise lock is kept OFF the neutral holder turns counterclockwise and the roller is returned to Neutral position The HST pedal 8 also returns to Neutral pos...

Page 211: ...31T gear 7 on 6T bevel pinion shaft 4 Low Speed Position Sub shaft 8 18T shifter gear 10 12T gear 11 31T of 25T 31T gear 7 6T bevel pinion shaft 4 Middle Speed Position Sub shaft 8 18T shifter gear 10...

Page 212: ...slides forward meshes the13T gear 6 on the 6T bevel pinion shaft 9 In this state power from the 6T bevel pinion shaft 9 is transmitted through 20T shifter gear 5 to the front wheel drive shaft 4 and t...

Page 213: ...e third section is mid PTO selection section The fourth section is rear PTO rotation prevention section In this section when the PTO shift lever is set to Mid PTO shifter slides to the front side and...

Page 214: ...dependent PTO shaft spline 9 Power is transmitted from the independent PTO clutch to the rear PTO shaft as follows Independent PTO clutch PTO shifter 7 Independent PTO shaft 6 Rear PTO shifter Rear PT...

Page 215: ...ent PTO clutch to both the rear PTO shaft and the mid PTO shaft as follows Rear PTO Section Independent PTO Clutch PTO shifter 7 Independent PTO Shaft 6 Rear PTO shifter Rear PTO shaft Mid PTO Section...

Page 216: ...kwise the rear PTO shifter is pushed forward Then the rear PTO shifter meshes the rib of the transmission case In this state the rear PTO brake shifter prevents the independent PTO shaft from rotating...

Page 217: ...h to the Mid PTO shaft as follows Independent PTO clutch PTO shifter 7 25T mid gear 8 26T gear 12 17T 26T mid gear 14 30T gear 15 Mid PTO shaft 16 9Y1210003TRM0030US0 14 17T 26T id Gear 15 30T Gear 16...

Page 218: ...boss 12 PTO Brake When the mechanical PTO clutch lever is shifted to OFF Disengaged position the shifter 10 slides to the PTO brake spring side The shifter 10 does not mesh to the one way clutch splin...

Page 219: ...t shaft 1 to both the rear PTO and the mid PTO as follows To Rear PTO First shift shaft 1 One way clutch cam 2 One way clutch spline boss 3 shifter PTO ON OFF 4 PTO brake spline boss 5 PTO shifter 6 P...

Page 220: ...transmitted from the first shift shaft 1 to the mid PTO as shown in the figure 9Y1210003TRM0034US0 1 First Shift Shaft 2 One way Clutch Cam 3 One way Clutch Spline Boss 4 Shifter PTO ON OFF 5 PTO Brak...

Page 221: ...ged However when the PTO shaft drives a rotary mower for example and if the engine speed is lowered the one way clutch spline boss 9 on the PTO clutch shaft 18 will overrun This overrunning is caused...

Page 222: ...3 7 When rotation of one differential side gear becomes lower than the other differential pinions 2 6 begin rotating around differential pinion shaft 5 The other differential side gear is increased in...

Page 223: ...shift fork 2 and the differential lock clutch 5 toward the spiral bevel gear 8 The differential lock clutch 5 engages with the teeth of the differential case 6 to make the differential case 6 and the...

Page 224: ...ND ASSEMBLING 3 S33 1 Front Case 3 S33 2 Main Gear Shift Section 3 S38 3 Mechanical PTO Clutch Assembly 3 S41 4 Hydrostatic Transmission HST 3 S43 5 PTO Clutch Case HST Model 3 S54 6 Bevel Pinion Shaf...

Page 225: ...ve 3 S10 3 S11 3 S47 Neutral valve defective Inspect or replace neutral valve 3 S48 Component parts defective Replace hydrostatic transmission assembly 3 S44 to 3 S53 3 S53 Vibration and Noise Oil lev...

Page 226: ...Low transmission oil level Fill oil to proper level G 15 3 S15 Radiator net clogged Clean radiator net Excessive machine load Reduce machine load Improper charge pressure 1 Check high relief pressure...

Page 227: ...or replace 3 S54 Symptom Probable Cause Solution Reference Page Excessive or Unusual Noise at All Times Improper backlash between spiral bevel pinion and bevel gear Adjust 3 S75 Improper backlash betw...

Page 228: ...and High Pressure Relief Valve Setting Pressure Relief Valve 33 9 to 34 8 MPa 345 to 355 kgf cm2 4910 to 5040 psi Charge Relief Valve Setting Pressure 0 4 to 0 6 MPa 4 1 to 6 1 kgf cm2 58 to 87 psi Re...

Page 229: ...in 1 10 mm 0 043 in Pressure Plate Thickness 1 95 to 2 05 mm 0 0768 to 0 0807 in 1 8 mm 0 071 in Piston Return Spring Free Length Load Length 44 0 mm 1 73 in 638 7 N 26 mm 65 13 kgf 26 mm 143 6 lbf 1...

Page 230: ...5 mm 1 2599 to 1 2608 in 32 000 to 32 025 mm 1 2599 to 1 2608 in 31 959 to 31 975 mm 1 2582 to 1 2589 in 0 3 mm 0 0118 in 1 Differential Pinion to Differential Pinion Shaft Differential Pinion Differe...

Page 231: ...o 20 2 Front case rear cover mounting bolt for aluminum M10 39 3 to 44 1 4 0 to 4 5 29 0 to 32 5 Front case rear cover mounting stud bolt for aluminum M12 62 8 to 72 5 6 4 to 7 4 46 3 to 53 5 Bi Speed...

Page 232: ...the adaptor 5 Start the engine and warm the transmission fluid before testing 6 Steer the steering wheel and turn the front wheel above 0 714 rad 42 7 Read the low pressure gauge to measure the charg...

Page 233: ...from the HST pedal 6 9 Read the low pressure gauge to measure the charge relief pressure 10 If the measurement is not same as factory specification check the charge relief valve and the related hydra...

Page 234: ...ement is not the same as factory specification check the check and high pressure relief valve assembly IMPORTANT Measure quickly so than the relief valve may not be in operation more than 10 seconds N...

Page 235: ...urement is not same as factory specification check the check and high pressure relief valve assembly IMPORTANT Measure quickly so that the relief valve may not be in operation more than 10 seconds NOT...

Page 236: ...turn of the poppet 4 4 Repeat the same operation a few times to find the distance A as it is difficult to acquire at the first time 5 After finding the distance A hold the setscrew 6 to a vice and fa...

Page 237: ...ght brake pedals Shorten the release rod 6 until the cruise control is returned to OFF position C Case 2 When the cruise control lever is not kept at ON position B by depressing the one side brake ped...

Page 238: ...crew in the drain plug 1 5 Fill new oil up to upper line on the dipstick 2 IMPORTANT When using an oil of different manufacture or viscosity from the previous one remove all of the old oil Never mix t...

Page 239: ...r to 4 LUBRICANTS FUEL AND COOLANT on page G 8 Never work the tractor immediately after changing the transmission oil Keep the engine at medium speed for a few minutes to prevents damage to the transm...

Page 240: ...y drain the coolant 3 After all coolant is drained close the drain cock 2 IMPORTANT Do not start engine without coolant Use clean fresh water and anti freeze to fill the radiator and recovery tank Whe...

Page 241: ...34a equipment refrigerant and refrigerant oils with R12 systems to prevent compressor damage CAUTION Protect fingers with cloth against frostbite by refrigerant when disconnecting the hose to the char...

Page 242: ...enser 7 4 Remove the refrigerant clamps 12 13 5 Dismount the receiver the condenser with the refrigerant hose 4 not to bend or not to damage the refrigerant pipes connected to the receiver When reasse...

Page 243: ...a steering wheel puller Code No 07916 51090 4 Remove the bolts 2 and the front wiper cover 1 5 Disconnect the coupler 6 Remove the meter panel 5 7 Disconnect the hour meter cable 8 from the meter pan...

Page 244: ...the bolts 2 and the HST pedal 1 2 Remove the grip 4 Remove the differential lock pin at the right side rear axle shaft 3 Remove the bolts 6 and the seat front cover 5 from the fenders and the steps 9...

Page 245: ...move the bolts and the step 2 4 Remove the bolt and the stopper 5 5 Remove the cabin mounting bolts and the nuts When reassembling 9Y1210003TRS0020US0 Tightening torque Cabin mounting bolts and nuts M...

Page 246: ...tank 4 4 Disconnect the cabin connector 5 5 After disconnecting the leads from tail light body 6 remove the tail light body 6 from the fenders 6 Remove the cabin mounting bolts and nuts 7 When reassem...

Page 247: ...assembling If the beam shield 1 is damaged replace it with a new one 9Y1210003TRS0022US0 Removing Cabin Support 1 Remove the cabin support R H 1 and the cabin support L H 2 When reassembling 9Y1210003...

Page 248: ...plugs 1 3 5 IMPORTANT Use only KUBOTA UDT oil Use of other oils may damage the transmission or hydraulic system Refer to 4 LUBRICANTS FUEL AND COOLANT on page G 8 Never work the tractor immediately af...

Page 249: ...t 9Y1210003TRS0026US0 Battery 1 Disconnect the battery negative cable first 2 Disconnect the battery positive cable second 3 Remove the battery 1 4 Remove the front hitch When reassembling Connect the...

Page 250: ...elivery pipes 9Y1210003TRS0028US0 Hydraulic Hoses from Power Steering Cylinder 1 Disconnect the hydraulic hoses 1 3 from the power steering cylinder 2 2 Removing the snap pin 4 and disconnect the Bi S...

Page 251: ...nk completely 9Y1210003TRS0030US0 HST Pedal and Floor Mat 1 Remove the HST pedal mounting bolts 2 2 Remove the HST pedal 1 3 Remove the floor mat 9Y1210003TRS0031US0 Front Cover 1 Remove the front cov...

Page 252: ...isconnect the hour meter cable and wiring harness connectors 6 Remove the meter panel 1 not to damage with the steering shaft 4 7 Remove the shuttle lever 5 8 Remove the panel lower cover 6 When reass...

Page 253: ...nnect the leads 1 from the fuel tank 2 2 Remove the steering post stay 3 3 Disconnect the overflow hoses from the fuel tank 2 4 Remove the fuel tank 2 9Y1210003TRS0034US0 1 Lead 2 Fuel Tank 3 Steering...

Page 254: ...delivery pipe mounting nuts 4 Slide the hydraulic delivery pipe 5 Loosen the hose band 7 6 Disconnect the suction hose 8 from the hydraulic pump When reassembling Apply the liquid gasket Three Bond 12...

Page 255: ...g bolts 4 Remove the sub frames 3 and 7 9Y1210003TRS0037US0 1 Bolt 2 Step R H 3 Step L H 4 Nut Tightening torque Sub frame mounting bolt for aluminum M10 39 3 to 45 1 N m 4 0 to 4 6 kgf m 29 0 to 33 2...

Page 256: ...n the docking bolts between the engine and the front case securely 9Y1210003TRS0038US0 Separating Front Axle from Engine 1 Remove the exhaust pipe 2 Disconnect the radiator hoses 3 Remove the front ax...

Page 257: ...engine and the front case 9Y1210003TRS0040US0 Clutch Shaft and Ball Bearing 1 Remove the oil seal 7 2 Remove the cir clip 6 3 Remove the clutch shaft 3 from the front case 2 9Y1210003TRS0041US0 Tight...

Page 258: ...When assembling Check the oil seals and the O ring for damage 9Y1210003TRS0043US0 Tightening torque Steel plate mounting bolt M8 23 6 to 27 4 N m 2 4 to 2 8 kgf m 17 4 to 20 2 lbf ft 1 Steel Plate Mo...

Page 259: ...shaft 1 2 and Bi Speed Turn clutch shaft 3 from the front case 4 2 Remove the internal cir clip 7 3 Remove the front wheel drive shaft 3 5 with the bearing holder 6 9Y1210003TRS0044US0 1 Clutch Shaft...

Page 260: ...gear 4 and the cir clip 5 3 Remove the bearing 9 4 Remove the thrust collar 8 and the 23T gear 7 When assembling Check the seal ring for damage 9Y1210003TRS0045US0 1 Bi Speed Turn Clutch Shaft Front W...

Page 261: ...cified tightening torque After tighten the flange nut punch the nut at the two portions as shown in the picture 9Y1210003TRS0046US0 Tightening torque Bi Speed Turn clutch shifter mounting flange nut M...

Page 262: ...the front wheel drive shaft under the engine Install the coupling and the propeller shaft to the clutch shaft Secondly align the spline between the front wheel drive shaft and the universal joint Thi...

Page 263: ...ing spline between the shuttle shaft and the Hi Lo gear shaft Align the coupling spline between the front wheel drive shafts 9Y1210003TRS0048US0 Tightening torque Main gear shift section mounting bolt...

Page 264: ...o the main gear shift section case 1 Install the three shafts the shift shaft 1 2 the shift shaft 2 3 and the shuttle shaft 5 to the main gear shift section case 1 and install the front wheel drive sh...

Page 265: ...o the specified torque 9Y1210003TRS0051US0 Removing One Way Clutch Spline Boss 1 Remove the cir clip 5 from the PTO clutch shaft 2 Remove the one way clutch spline boss 3 with the bearing 4 3 Remove t...

Page 266: ...sher 8 from the transmission case 5 Remove the PTO shift arm 13 When reassembling Install the PTO cotter 10 to the groove of the PTO shifter securely Install the ball 11 and the spring 12 to the trans...

Page 267: ...frame mounting bolts 7 Separate the transmission assembly from the main frame 8 After separating the transmission remove the rear wheels and the transmission outer parts installed to the transmission...

Page 268: ...l the O ring 3 to the transmission case Apply liquid gasket Three Bond 1206D or equivalent to the groove 4 of the transmission case 9Y1210003TRS0056US0 Tightening torque HST assembly mounting bolt for...

Page 269: ...Neutral Holder 1 Remove the plate push rod 1 2 Remove the spring 4 3 Remove the neutral arm mounting bolt 4 Loosen the bolt of the neutral holder 3 5 Remove the neutral holder 3 9Y1210003TRS0057US0 1...

Page 270: ...sket Install the poppet to the center section 1 Don t drop the spring 5 Check the knock pin Hold the gasket with the hex bolts 2 not to drop the gasket 4 9Y1210003TRS0058US0 Tightening torque Center s...

Page 271: ...ssembling After checking or changing the oil seals apply the bearing with hydrostatic transmission oil and the oil seal with grease 9Y1210003TRS0060US0 Check and High Pressure Relief Valve 1 Remove th...

Page 272: ...6 in When reassembling 9Y1210003TRS0062US0 Tightening torque Neutral valve body 58 5 to 68 6 N m 6 0 to 7 0 kgf m 43 4 to 50 6 lbf ft 1 Neutral Valve 2 Rachet Handle 3 Thin Socket 27 mm 1 06 in 4 Span...

Page 273: ...he neutral valve 3 with 2 5 mm hex wrench 11 not to damage it 5 Take out the inner parts from the neutral valve body 4 When reassembling 9Y1210003TRS0063US0 Tightening torque Neutral valve body 58 5 t...

Page 274: ...motor shaft 3 2 Remove the cir clip 5 and spring 6 from the cylinder block When reassembling Install the poppet 8 to the center section not to drop it Install the spring 7 to the HST housing side 9Y12...

Page 275: ...l position of the cylinder block Check the direction of the retainer plate 1 as shown in the picture If the direction of the retainer plate is wrong HST will not be operated properly 9Y1210003TRS0065U...

Page 276: ...emove the internal cir clip 6 from the HST housing 2 Remove the oil seal 5 from the HST housing 3 Remove the external cir clip 4 from the pump shaft 1 4 Remove the internal cir clip 2 from the HST hou...

Page 277: ...o damage the o rings 7 4 4 Take out the cover 3 with o ring 5 Take out the thrust collar using air blower When reassembling Check the O rings for damage 9Y1210003TRS0068US0 Charge Relief Valve 1 Check...

Page 278: ...nsmission case groove 7 securely as shown in the picture Place the PTO brake plate 2 6 between A and B 9Y1210003TRS0070US0 Tightening torque Transmission case mounting bolt M10 and nut 39 3 to 44 1 N...

Page 279: ...2 Gear teeth number are changed by the tractor models When reassembling Check the gear teeth number and assemble the bevel pinion shaft assembly M T Manual Transmission 9Y1210003TRS0072US0 1 Bevel Pi...

Page 280: ...and the 26T gear 2 When reassembling Install the range shift arm 9 to the range shift fork 10 securely Install the O rings 8 to the range shift arm 9 9Y1210003TRS0074US0 1 Cir clip 2 Range Gear Shaft...

Page 281: ...D shaft 1 2 Remove the 4WD gear 8 from the 4WD shaft 1 3 Remove the 4WD shaft 1 with the 26T gear 3 4 Remove the 26T gear 3 and the ball bearing 7 9Y1210003TRS0075US0 1 4WD Shaft 2 Collar 3 26T Gear 4...

Page 282: ...TO arm 9 3 Remove the PTO clutch shaft 1 and the PTO shifter as an assembly When reassembling Install the rear PTO arm 9 to the transmission case After installing the PTO shifter 8 to the PTO clutch s...

Page 283: ...case 3 Push the PTO shift arm ball guide 1 into the transmission case as shown in the picture 4 Push the PTO shift arm ball guide 1 with the PTO shift arm 4 5 Install the PTO cotter 5 to the PTO shift...

Page 284: ...lutch plates 10 from the PTO clutch case 2 4 Remove the ball bearing 1 from the PTO clutch case 2 with a puller NOTE When removing the cir clip use an adequate size snap ring pliers 9Y1210003TRS0079US...

Page 285: ...the spline boss 5 4 Remove the brake plate 16 the brake disks 15 and the brake plate 14 5 After removing the external cir clip 9 remove the spring collar 8 and the spring 19 When reassembling Install...

Page 286: ...ir clip with a small screw driver through the small hole of the spline boss 1 2 Lift the cir clip 2 with a screw driver not to damage it When reassembling Install the cir clip 2 holding it by hands 9Y...

Page 287: ...t the PTO shaft rear side 3 Remove the ball bearing 2 with a puller When reassembling Check all seal rings 5 If the seal ring 5 is damaged replace it Check the direction of the thrust bearing 6 and in...

Page 288: ...w driver 2 Remove the mid gear 1 from the transmission case 3 Remove the ball bearings 4 5 and the internal cir clip 6 from the mid gear 1 When reassembling Install the internal cir clip 6 to the inne...

Page 289: ...he ball bearings 6 7 6 Remove the bearing 6 7 from the mid gear shaft 3 When reassembling If the mid PTO oil seal 4 is defective worn or scratched replace it Apply grease to the lip and the outer of t...

Page 290: ...f the rear axles cases and the rear PTO cover 9Y1210003TRS0087US0 Tightening torque Hydraulic cylinder mounting bolt M10 39 3 to 44 1 N m 4 0 to 4 5 kgf m 28 9 to 32 5 lbf ft Transmission case mountin...

Page 291: ...tch spline boss 5 the PTO brake spline boss 6 and the 25T mid PTO gear 7 4 If the PTO clutch shaft is rough or grooved replace it 5 If the needle bearing is wore replace it 6 The one way clutch spline...

Page 292: ...is rough or grooved replace it 4 If the bearing is worn replace it 9Y1210003TRS0093US0 Cylinder Block Bore and Pistons 1 Lift all the pistons gently with the retainer plate 1 2 Check the pistons for...

Page 293: ...eplace cylinder block assembly 9Y1210003TRS0096US0 Valve Plate and Center Section Face 1 Check the engagement of the valve plate 1 and the anchor pin 2 2 Pushing the valve plate 1 against the anchor p...

Page 294: ...nd Bearings 1 Check the oil seals 1 for damage 2 Check the needle bearings 2 for wear 3 If the needle bearings 2 and oil seals 1 are worn replace all seals and needle bearings NOTE After checking coat...

Page 295: ...linder block bore is scored replace cylinder block assembly IMPORTANT Do not interchange pistons between pump and motor cylinder block Pistons and cylinder blocks are matched 9Y1210003TRS0104US0 4 Ind...

Page 296: ...the inner race and push and pull the outer race in all directions to check for wear and roughness 2 Apply transmission fluid to the bearing and hold the inner race Then turn the outer race to check r...

Page 297: ...micrometer and calculate the clearance 3 If the clearance exceeds the allowable limit replace faulty parts 9Y1210003TRS0111US0 Clearance between shift fork and shift gear groove Factory specification...

Page 298: ...ntial pinion and side gear against the differential case 4 Hold the differential pinion and move the differential side gear to measure the backlash 5 If the backlash exceeds the allowable limit adjust...

Page 299: ...g the spiral bevel pinion 3 and moving bevel gear 6 by hand 6 If the backlash exceeds the factory specifications adjust with the shims 2 7 at bearing holder 4 and differential case 7 Adjust the backla...

Page 300: ...4 REAR AXLE KiSC issued 05 2012 A...

Page 301: ...CONTENTS 1 STRUCTURE 4 M1 MECHANISM KiSC issued 05 2012 A...

Page 302: ...e rear wheel load as well as transmitting power to the rear wheels The differential gears 7 automatically control the revolution of right and left wheels when the rear wheels encounter unequal resista...

Page 303: ...CONTENTS 1 TROUBLESHOOTING 4 S1 2 TIGHTENING TORQUES 4 S2 3 DIASSEMBLING AND SERVICING 4 S3 1 DIASSEMBLING AND ASSEMBLING 4 S3 2 SERVICING 4 S7 SERVICING KiSC issued 05 2012 A...

Page 304: ...ual Noise at All Time Improper backlash between differential gear shaft and final reduction gear Replace 3 S74 3 S75 Bearing worn Replace 4 S6 Insufficient or improper type of transmission fluid used...

Page 305: ...el cotter setting bolt and nut B1830 B2230 B2530 123 to 147 12 6 to15 0 91 to 108 Rear wheel hub mounting nut B1830 B2230 B2530 108 to 125 11 0 to 12 8 80 to 93 Rear axle case mounting bolt M10 B1830...

Page 306: ...on or hydraulic system Refer to 4 LUBRICANTS FUEL AND COOLANT on page G 8 Never work the tractor immediately after changing the transmission oil Keep the engine at medium speed for a few minutes to pr...

Page 307: ...ar axle When reassembling Apply liquid gasket Three Bond 1206D or equivalent to the joint face of the rear axle case and the differential gear case Hexagon rear axle B1830 B2230 B2530 Hub rear axle B3...

Page 308: ...030HD Serial No 90000 and below B2530HD Serial No 90000 and below B2530D Serial No 50000 and below B2230HD Serial No 90000 and below B2230D Serial No 50000 and below B1830D Serial No 50000 and below b...

Page 309: ...d the differential lock shift fork 2 3 Remove the external cir clip 6 4 Remove the transmission oil filter bracket 7 9Y1210003RAS0005US0 1 Spring 2 Differential Lock Shift Fork 3 Differential Lock Clu...

Page 310: ...rear axle case 9Y1210003RAS0006US0 2 SERVICING Checking Ball Bearing 1 Hold the inner race and push and pull the outer race in all directions to check for wear and roughness 2 Apply transmission fluid...

Page 311: ...5 BRAKES KiSC issued 05 2012 A...

Page 312: ...CONTENTS 1 FEATURE 5 M1 2 OPERATION 5 M2 MECHANISM KiSC issued 05 2012 A...

Page 313: ...ts are required 2 Stable braking Since the brake discs are immersed in transmission oil Fade is rarely caused even after repeated braking and a stable braking force is obtained 3 Pedal stroke does not...

Page 314: ...ed between the brake discs During Braking When the brake pedal is pressed the linkage causes the brake cam lever 4 and brake cam 5 to turn into the direction of arrow shown in the above figure Therefo...

Page 315: ...G 5 S1 2 SERVICING SPECIFICATIONS 5 S2 3 TIGHTENING TORQUES 5 S3 4 CHECKING DISASSEMBLING AND SERVICING 5 S4 1 CHECKING AND ADJUSTING 5 S4 2 DISASSEMBLING AND ASSEMBLING 5 S6 3 SERVICING 5 S10 SERVICI...

Page 316: ...warped Replace 5 S9 Brake Drags Brake pedal free travel too small Adjust 5 S4 Parking brake lever free travel too small Adjust 5 S5 Brake pedal return spring weaken or broken Replace Brake cam rusted...

Page 317: ...40 mm 1 18 to 1 57 in Difference of Stroke R H and L H 0 mm 0 in Parking Brake Free Travel 4 to 5 notches Cam Plate and Ball Height 22 89 to 22 99 mm 0 9012 to 0 9051 in 22 40 mm 0 8819 in Brake Disc...

Page 318: ...cotter setting bolt and nut B1830 B2230 B2530 123 to 147 12 6 to 15 0 91 to 108 Rear wheel hub mounting nut B1830 B2230 B2530 108 to 125 11 0 to 12 8 80 to 93 Rear axle case mounting bolt M10 B1830 B...

Page 319: ...ent is not within the factory specifications loosen the lock nut and turn the turnbuckles to adjust the brake rod length 4 Retighten the lock nut securely Keep the free travel in the right and left br...

Page 320: ...nut 3 of the left rod 6 by hand until the collar 4 comes into contact with the arm 5 7 Tighten up the lock nuts 2 of right and left rods 8 Make sure the parking brake lever gets locked at the its 4th...

Page 321: ...14 18 2 Remove the pin 13 and disconnect the brake rods 9 12 3 Disconnect the parking brake arm 15 from parking brake lever plate 20 4 Remove the clevis pin 16 and remove the parking brake arm 15 and...

Page 322: ...9US0 Brake Assembly 1 Remove the differential fork lever 1 2 Remove the internal snap ring 3 3 Remove the brake shaft 2 with the brake disks and the brake places as an assembly When reassembling When...

Page 323: ...all bearing 2 When reassembling NOTE Since the length of the brake shaft L H and the brake shaft R H are different don t exchange them Install the brake disks with their holes 7 deviation at less than...

Page 324: ...If O ring 4 is defective change it Install the brake cam lever 3 to the brake cam plate 1 securely Move the brake cam lever 3 by hand to check the movement If the movement is heavy refine the brake c...

Page 325: ...l 1 Measure the height of the cam plate with the ball installed 2 If the measurement is less than the allowable limit replace the cam plate and balls 3 Inspect the ball holes of cam plate for uneven w...

Page 326: ...6 FRONT AXLE KiSC issued 05 2012 A...

Page 327: ...CONTENTS 1 STRUCTURE 6 M1 1 4 WHEEL DRIVE MODEL 6 M1 MECHANISM KiSC issued 05 2012 A...

Page 328: ...4 6 in the bevel gear case 5 The revolution is greatly reduced by the bevel gears 3 then the power is transmitted to the axle 1 The differential system allows each wheel to rotate at a different spee...

Page 329: ...3 TIGHTENING TORQUES 6 S3 4 CHECKING DISASSEMBLING AND SERVICING 6 S4 1 CHECKING AND ADJUSTING 6 S4 2 DISASSEMBLING AND ASSEMBLING 6 S5 1 Separating Front Axle Assembly 6 S5 2 Disassembling Front Axle...

Page 330: ...djust 6 S4 Tie rod end loose Tighten 6 S6 Air sucked in power steering circuit Bleed 6 S5 Front Wheels Can Not Be Driven Front wheel driving gears in front axle gear case broken Replace 6 S7 Universal...

Page 331: ...0 mm 0 78611 to 0 78661 in 0 2 mm 0 008 in Differential Pinion to Differential Side Gear Backlash 0 10 to 0 30 mm 0 0039 to 0 0118 in Spiral Bevel Pinion Shaft Turning Torque 0 8 to 1 0 N m 0 08 to 0...

Page 332: ...lbf ft Front wheel mounting bolt and nut 77 0 to 90 0 7 9 to 9 2 57 0 to 67 0 Delivery hose retaining nut 24 to 28 2 5 to 2 9 17 7 to 20 7 Front axle holder mounting bolt 200 to 230 20 4 to 23 5 147...

Page 333: ...2 Set a spring balance to the front axle flange 3 Measure the front axle rocking force 4 If the measurement is not within the factory specifications adjust with the adjusting screw 2 After applying l...

Page 334: ...e front cover 5 4 Remove the front wheels NOTE After disconnecting the delivery hoses do not steer the front axle so that the steering oil may come out from the delivery hoses IMPORTANT Connect the de...

Page 335: ...the tie rod end 3 2 Remove the front axle brackets 1 2 When reassembling Apply grease to the thrust collar of front axle bracket Apply grease to the O ring and take care not to damage it After tighten...

Page 336: ...g bolts 2 Remove the axle flange 2 When reassembling Apply liquid gasket Three Bond 1206D or equivalent to joint face of the axle flange 2 and the front gear case 1 after eliminating the water oil and...

Page 337: ...internal cir clip 5 and remove the ball bearing 4 6 Remove the bevel gear shaft 2 with the bearing When reassembling Install the oil seal 9 of the bevel gear case noting its direction as shown in the...

Page 338: ...d shims 4 When reassembling Install the shim 4 to their original position Reference Thickness of adjusting shims 1 0 mm 0 039 in 0 8 mm 0 031 in 1 2 mm 0 047 in 1 4 mm 0 055 in 9Y1210003FBS0014US0 1 B...

Page 339: ...eir original position Reference Thickness of adjusting shims B1830 B2230 B2530 0 8 mm 0 03 in Parts No 6C040 5714 0 1 0 mm 0 04 in Parts No 6C040 5713 0 1 2 mm 0 05 in Parts No 6C040 5715 0 1 4 mm 0 0...

Page 340: ...ferential Gear 1 Remove the external cir clip 2 from the differential case 8 2 Tap out the spring pins 11 from the differential yoke shafts 1 10 3 Remove the differential yoke shafts 1 10 from the dif...

Page 341: ...rning torque of bevel pinion shaft 3 If the turning torque is not within the factory specifications adjust with the lock nut NOTE After turning force adjustment be sure to stake the lock nut 9Y1210003...

Page 342: ...004 in smaller size and change the adjusting collar 5 to 0 1 mm 0 004 in larger size 7 Adjust the backlash properly by repeating the above procedures Reference Above factory specification should be me...

Page 343: ...e case and measure the thickness of the fuses with an outside micrometer 5 If the backlash is not within the factory specifications adjust with shim 3 Reference Thickness of adjusting shims 3 0 8 mm 0...

Page 344: ...acing the bushing be sure to adjust the front axle rocking force See page 6 S4 9Y1210003FBS0023US0 Clearance between front axle case boss front and bracket bushing front Factory specification 0 125 to...

Page 345: ...7 STEERING KiSC issued 05 2012 A...

Page 346: ...CONTENTS 1 HYDRAULIC CIRCUIT 7 M1 2 STEERING CONTROLLER 7 M2 3 STEERING CYLINDER 7 M3 MECHANISM KiSC issued 05 2012 A...

Page 347: ...k etc Therefore it is simple in construction This steering system consists of oil filter cartridge 5 hydraulic pump 4 steering controller 2 steering cylinder 1 etc By operating the power steering body...

Page 348: ...ween the rotor 12 and the stator 13 while oil is discharged from other two chambers On the other hand rotation of the steering wheel is directly transmitted to the rotor through the spool 7 drive shaf...

Page 349: ...d to both knuckle arm guarantees equal steering movement to both front wheels The steering cylinder provide force in both directions Depending upon direction the steering wheel is turned pressure oil...

Page 350: ...4 CHECKING DISASSEMBLING AND SERVICING 7 S4 1 CHECKING 7 S4 1 Relief Valve 7 S4 2 DISASSEMBLING 7 S5 1 Separating Power Steering Controller 7 S5 2 Power Steering Controller 7 S6 3 Power Steering Cyli...

Page 351: ...ion circuit Repair Steering Wheel Turns Spontaneously When Released Steering controller malfunctioning Replace 7 S6 Front Wheels Wander to Right and Left Steering controller malfunctioning Replace 7 S...

Page 352: ...cification Allowable Limit Relief Valve Setting Pressure 11 9 to 12 8 MPa 121 to 131 kgf cm2 1726 to 1856 psi Item Factory Specification Allowable Limit Steering Cylinder I D 40 000 to 40 062 mm 1 574...

Page 353: ...nuts See page 5 TIGHTENING TORQUES on page G 10 9Y1210003STS0003US0 Item N m kgf m lbf ft Power steering hose for power steering cylinder 24 0 to 28 0 2 5 to 2 9 17 7 to 20 7 Power steering controller...

Page 354: ...tely 9 8 N 1 kgf 2 2 lbf of outer NOTE After set a pressure gauge be sure to bleed air Note that the pressure value changes by the pump action of the power steering controller when the steering operat...

Page 355: ...eering hoses 3 from the power steering controller 2 4 Remove the steering post mounting bolts 5 Remove the steering post assembly 5 from the main frame When reassembling Connect the power steering hos...

Page 356: ...the power steering controller 1 is found replace the power steering controller 1 O ring in the power steering controller 1 is not supplied as a spare part Align the power steering controller shaft 5...

Page 357: ...ring and take care not to damage it After tightening the slotted nut install cotter pin as shown in the figure Bleeding air in power steering circuit Start the engine Turn the steering wheel slowly in...

Page 358: ...linder 1 Remove the tie rod end 4 from the rod 1 using spanners 2 3 2 Remove the adaptors 8 9 3 Remove the rod cover 7 4 Tap out the rod 1 to the right front wheel side When reassembling Apply the liq...

Page 359: ...1 Measure the rod guide I D with a cylinder gauge 2 Measure the rod O D with an outside micrometer and calculate the clearance 3 If the clearance exceeds the allowable limit replace as a unit 9Y12100...

Page 360: ...8 HYDRAULIC SYSTEM KiSC issued 05 2012 A...

Page 361: ...LIC CIRCUIT 8 M7 2 INDEPENDENT PTO CONTROL VALVE 8 M7 3 INDEPENDENT PTO CLUTCH 8 M8 4 INDEPENDENT PTO LEVER ENGAGED 8 M9 5 INDEPENDENT PTO LEVER DISENGAGED 8 M10 6 THREE POINTS HYDRAULIC SYSTEM 8 M11...

Page 362: ...ng independent PTO clutch HST and 3 point hitch 9Y1210003HYM0001US0 1 Hydrostatic Transmission HST 2 Relief Valve 3 Oil Filter Cartridge 4 Independent PTO Control Valve 5 Bi Speed Turn Valve and Clutc...

Page 363: ...0 Displacement Engine speed Condition B1830 B2230 B2530 20 5 L min 5 4 U S gals min 4 5 Imp gals min At 2700 min 1 rpm at no load B3030 19 7 L min 5 2 U S gals min 4 3 Imp gals min At 2600 min 1 rpm a...

Page 364: ...ne This hydraulic block type outlet is provided to take power out from the tractor to operate the hydraulic cylinders on the implement such as front end loader front blade and so on 9Y1210003HYM0003US...

Page 365: ...wheel The controlled oil is forced to the power steering cylinder The oil to the controller is forced return through oil cooler 4 to independent PTO 3 and HST 5 9Y1210003HYM0004US0 1 Power Steering C...

Page 366: ...g controller is a complete part and can not be disassembled component parts in this power steering controller are not provided by KUBOTA 9Y1210003HYM0005US0 1 Power Steering Controller 2 Relief Valve...

Page 367: ...der is connected to the front gear cases Power steering hoses from power steering controller are connected to the adaptors of the steering cylinder Steering cylinder is composed of tie rod ends 3 pist...

Page 368: ...F position oil in the independent PTO control valve does not flow to the oil passage When the PTO arm 3 is moved to ON position oil in the independent PTO control valve flow to the oil passage Poppet...

Page 369: ...h shaft 6 to PTO clutch In this state power from HST pump shaft is transmitted through independent PTO clutch 2 to independent PTO clutch shaft 6 When independent PTO lever is shifted to DISENGAGED po...

Page 370: ...he PTO clutch shaft 5 to the PTO clutch 4 Since the piston of the PTO clutch 4 is pushed by pressurized oil clutch disks and clutch plates are pushed and the PTO clutch 4 is engaged 9Y1210003HYM0010US...

Page 371: ...s to the HST port Oil in the PTO clutch 4 and the PTO clutch shaft 5 drains through oil passage S2 S1 and T port to the transmission case 9Y1210003HYM0011US0 1 Independent PTO Lever 2 Independent PTO...

Page 372: ...valve 12 Three point hydraulic oil pressure is controlled by the relief valve 8 9Y1210003HYM0012US0 1 Power Steering Controller 2 Independent PTO 3 HST 4 Hydraulic Pump for Power Steering HST and Inde...

Page 373: ...vibration with the damping effect of the chamber As the oil pressure in the circuit increases so does the pressure in the damping chamber D C When the pressure rises above the valve setting and overco...

Page 374: ...lever with linkage This control valve is also mechanically connected to the lift arm with a feed back rod This control valve controls the oil flow forced from hydraulic pump and the oil returned back...

Page 375: ...on control lever is set to LIFT position the spool 2 is pushed into the valve body 1 The oil forced into the control valve body 1 through P port flows to two oil circuits The first circuit is oil flow...

Page 376: ...4 to transmission case It causes implement s smooth stopping at NEUTRAL position without shock 9Y1210003HYM0017US0 Down When the position control lever is set to DOWN position the spool 2 is pulled ou...

Page 377: ...rm 7 and the lever 8 After the lift arm 1 moves upward the spool is pulled out and returns to form a neutral circuit by the motions of the feedback rod 2 the feedback arm 4 the feedback arm shaft 5 th...

Page 378: ...ic cylinder to lift the implement 9Y1210003HYM0021US0 Down When the remote control valve operating lever is set to DOWN position the spool 3 moves to the left and the passage from P port to the BY por...

Page 379: ...nected to the port C 9Y1210003HYM0024US0 1 Auxiliary Control Valve 2 Rear Hydraulic Outlet 3 Hydraulic Cylinder Body A To Implement B From Implement Drain C From Hydraulic Pump D To Transmission Case...

Page 380: ...Independent PTO Control Valve 8 S8 3 3 Points Hitch Relief Valve 8 S9 4 Lift Arm 8 S10 2 DISASSEMBLING AND ASSEMBLING 8 S11 1 Hydraulic Pump 8 S11 2 Power Steering Controller 8 S12 3 Independent PTO...

Page 381: ...from pipe or hose Replace 7 S5 Pipe or hose broken Replace 7 S5 Steering Wheel Does Not Return to Neutral Position Power steering controller damaged Replace 7 S6 Steering Force Fluctuates Insufficien...

Page 382: ...replace G 15 Suction pipe loose or broken Repair or replace 3 S30 3 S31 Suction pipe connecting hose loose or broken Repair or replace 3 S38 Suction pipe O ring broken Replace 3 S38 Insufficient tran...

Page 383: ...mm 0 5906 to 0 5930 in 0 12 mm 0 0047 in Side Plate Thickness 2 48 to 2 50 mm 0 0976 to 0 0984 in 2 40 mm 0 0945 in Lift Arm Free Play 5 to 10 mm 0 20 to0 40 in Relief Valve for 3 Points Hitch B1830 B...

Page 384: ...0118 in Hydraulic Arm Shaft R H O D 37 925 to 37 950 mm 1 4931 to 1 4941 in Hydraulic Arm Shaft L H O D 34 925 to 34 950 mm 1 3750 to 1 3759 in Hydraulic Cylinder Bushing R H I D 37 970 to 38 035 mm 1...

Page 385: ...ol valve mounting bolt M10 39 3 to 44 1 4 0 to 4 5 29 0 to 32 5 Set bolt of the lower link pin 15 to 20 1 6 to 2 0 11 to 14 Lock nut of the lower link pin 43 to 47 4 4 to 4 7 32 to 34 Hydraulic cylind...

Page 386: ...lic block for the front loader to the delivery pipe 2 4 Install the adaptors to the hydraulic block 5 Connect the hydraulic test hose to the adaptor and the flowmeter inlet port 6 Connect the another...

Page 387: ...e Condition B1830 B2230 B2530 Engine rated speed 2700 min 1 rpm Rated pressure 15 5 to 16 5 MPa 158 to 168 kgf cm2 2248 to 2393 psi Oil temperature 50 C 122 F B3030 Engine rated speed 2600 min 1 rpm R...

Page 388: ...e at ENGAGED position 5 Move the independent PTO lever 9 to ENGAGED position A 6 If the pressure is not the factory specifications replace the spring with a new one Condition Engine speed Maximum Oil...

Page 389: ...ory specifications adjust the relief valve setting pressure with the adjusting shims 4 5 8 After checking the pressure reinstall the feedback rod lock nut and the plug 1 Condition B1830 B2230 B2530 En...

Page 390: ...the uppermost position 4 Move the lift arm 2 to the upper end by hand and measure the free play 5 If the measurement is not within the factory specifications adjust the free play by changing the posit...

Page 391: ...ipe and the hydraulic pump When reassembling Apply liquid gasket Three Bond 1206D or equivalent to engine stop solenoid NOTE For fastening hydraulic pipe nut use two wrenches Hold the fitting with a w...

Page 392: ...onnect the independent PTO delivery pipe 4 from the independent PTO control valve 6 7 Disconnect the control rod 8 from the PTO arm 7 8 Remove the bolts from the independent PTO control valve 6 When r...

Page 393: ...the o rings to the groove securely 9Y1210003HYS0013US0 Transmission fluid capacity B1830 B2230 B2530 Manual transmission without Bi Speed Turn 15 L 4 0 U S gals 3 3 Imp gals B1830 B2230 B2530 Manual...

Page 394: ...eassembling the lower link pin 8 remove the set bolt 6 and lock nut 7 of the lower link pin 9Y1210003HYS0014US0 Tightening torque Set bolt of the lower link pin 15 to 20 N m 1 6 to 2 0 kgf m 11 to 14...

Page 395: ...of the differential case and the hydraulic cylinder 9Y1210003HYS0015US0 Tightening torque Hydraulic cylinder mounting bolt and nut M10 39 3 to 44 1 N m 4 0 to 4 5 kgf m 28 9 to 32 5 lbf ft 1 Hydraulic...

Page 396: ...s 10 and the bolts 6 6 Remove the hydraulic cylinder mounting bolts 9 and nuts 8 7 Remove the hydraulic cylinder 11 from the tractor When reassembling Apply the liquid gasket Three Bond 1206D or equiv...

Page 397: ...10003HYS0017US0 5 3 Points Hitch Hydraulic Cylinder Checking the Length of the Adjusting Bolt NOTE Before disassembling the control valve check the length of the adjusting bolt 1 Push the spool 1 into...

Page 398: ...der the hexagon wrench is not aligned straight to the hexagon bolt without pushing the spool as shown in the picture 1 Push the spool 1 into the control valve 3 2 Remove the hexagon bolts 2 with a hex...

Page 399: ...2 2 Draw out the hydraulic arm shaft 3 and lift arm R H 4 as a unit When reassembling Align the alignment marks 5 of the hydraulic arm and hydraulic arm shaft Align the alignment marks 6 of the lift...

Page 400: ...eplace the O ring if it is defective worn or scratched which may cause oil leakage 9Y1210003HYS0022US0 Hydraulic Adjust Shaft 1 Remove the internal cir clip 1 and the hydraulic adjusting shaft 2 2 Dra...

Page 401: ...h L of the adjusting bolt 9Y1210003HYS0024US0 1 External Cir clip 2 Lever 3 Spring 4 Spool 5 Spring Holder 6 Poppet 7 O ring 8 Control Valve Body 9 Plug 10 Spring 11 Unload Plug 12 Plug 13 Poppet 14 S...

Page 402: ...ove the plug 2 9 and draw out the spool 8 When reassembling Take care not to damage the O rings and backup rings 9Y1210003HYS0026US0 Tightening torque Plug 1 29 4 to 49 0 N m 3 0 to 5 0 kgf m 21 7 to...

Page 403: ...03HYS0029US0 Hydraulic Cylinder Bore 1 Check the cylinder internal surface for scoring or damage 2 Measure the cylinder I D with a cylinder gauge 3 If the measurement exceeds the allowable limit repla...

Page 404: ...replace the bushing 9Y1210003HYS0031US0 Clearance between hydraulic arm shaft and bushing Factory specification 0 020 to 0 110 mm 0 0008 to 0 0043 in Allowable limit 0 30 mm 0 0118 in Hydraulic arm s...

Page 405: ...9 ELECTRICAL SYSTEM KiSC issued 05 2012 A...

Page 406: ...Conditions and Automatic Engine Stop 9 M11 3 STARTER 9 M13 4 GLOW PLUG 9 M14 5 SAFETY SWITCH 9 M14 6 KEY STOP SOLENOID 9 M18 4 CHARGING SYSTEM 9 M19 1 ALTERNATOR 9 M21 2 IC REGULATOR 9 M21 5 LIGHTING...

Page 407: ...ELECTRICAL SYSTEM B1830 B2230 B2530 B3030 WSM 9 M1 1 WIRING DIAGRAM WITHOUT OPC 1 ROPS KiSC issued 05 2012 A...

Page 408: ...ELECTRICAL SYSTEM B1830 B2230 B2530 B3030 WSM 9 M2 2 CABIN KiSC issued 05 2012 A...

Page 409: ...ELECTRICAL SYSTEM B1830 B2230 B2530 B3030 WSM 9 M3 2 WIRING DIAGRAM WITH OPC 1 ROPS 1 HST Type KiSC issued 05 2012 A...

Page 410: ...ELECTRICAL SYSTEM B1830 B2230 B2530 B3030 WSM 9 M4 2 Manual Type KiSC issued 05 2012 A...

Page 411: ...ELECTRICAL SYSTEM B1830 B2230 B2530 B3030 WSM 9 M5 2 CABIN 1 HST Type KiSC issued 05 2012 A...

Page 412: ...ELECTRICAL SYSTEM B1830 B2230 B2530 B3030 WSM 9 M6 2 Manual Type KiSC issued 05 2012 A...

Page 413: ...nt flows to the starter motor and start the engine The starter switch automatically returns to the ON position the terminal B is connected only to the terminal AC thereby causing the starting circuit...

Page 414: ...itch with MID PTO the HST pedal switch or shuttle shift lever switch and the parking brake switch and controller Engine starting is operated by starter motor after current flowing from the controller...

Page 415: ...the independent PTO lever switch or PTO ON OFF lever switch the PTO select lever switch with MID PTO and the parking brake switch Main parts regarding OPC system are laid out as shown in the electrica...

Page 416: ...to starter motor 8 S terminal or key stop solenoid relay 9 Controller 1 receives data processes the data and sends out the computing results Controller 1 receives data from safety switches processes t...

Page 417: ...F 5 ON ON ON OFF ON Start OFF 6 ON OFF ON OFF ON Start OFF 7 ON ON ON OFF OFF Start OFF 8 ON OFF ON OFF OFF Start OFF 9 ON ON OFF ON ON Cannot Start OFF 10 ON OFF OFF ON ON Cannot Start OFF 11 ON ON O...

Page 418: ...Stand OFF Start Engine does not Stop OFF 1 ON ON ON ON Start OFF 2 ON ON ON OFF Start OFF 3 ON ON OFF ON Start OFF 4 ON ON OFF OFF Start OFF 5 ON OFF ON ON Cannot Start OFF 6 ON OFF ON OFF Cannot Star...

Page 419: ...ed planetary gears and the speed of gear shaft 6 is reduced to approximately one fifth of the armature shaft 8 9Y1210003ELM0007US0 1 Housing 2 Magnetic Switch 3 Overrunning Clutch 4 Drive Lever 5 Inte...

Page 420: ...s in the area of 2 to 3 mm 0 079 to 0 118 in from the tip of the plug in order to reduce its projection into the combustion chamber 9Y1210003ELM0008US0 5 SAFETY SWITCH Manual Transmission Model Shuttl...

Page 421: ...turned to OFF Manual Transmission Model This switch locates at the bottom side of PTO clutch lever This switch detects the position at the PTO clutch lever 7 When the PTO clutch lever 7 is at OFF DISE...

Page 422: ...e independent PTO lever is set to ENGAGED position this switch is turned OFF Manual Transmission Model This switch locates at the main gear section case This switch is a push type This switch detects...

Page 423: ...d notch position NOTE In case the seat is vacant or the operator gets up from the seat a When the parking brake is in the released on position engine must stop immediately after shifting the rear PTO...

Page 424: ...h is turned to OFF 9Y1210003ELM0012US0 6 KEY STOP SOLENOID Flowing of the battery current into the fuel cut off solenoid the plunger 2 move to left side so that the movement of control rack 4 becomes...

Page 425: ...stem Without OPC The charging system supplies electric power for various electrical devices and also charges the battery while the engine runs 9Y1210003ELM0014US0 1 Fuse 2 Alternator 3 Battery 4 Slow...

Page 426: ...es electric power for various electrical devices and also charges the battery while the engine runs 9Y1210003ELM0015US0 1 Relay AC1 2 Relay AC2 3 Relay 4 Joint Connector 5 Alternator 6 Starter Motor 7...

Page 427: ...change over time so the need for readjustment is eliminated Since there are no moving parts IC regulators are extremely durable and resistant to vibration The overheat compensation characteristics ens...

Page 428: ...ights combination lights brake lights etc 9Y1210003ELM0018US0 1 Beacon 2 Head Light 3 Combination Light 4 Front Combination Light 5 Beacon Switch 6 Hazard Switch 7 Alternator 8 Oil Switch 9 Battery 10...

Page 429: ...nation Light R H 8 Front Combination Light L H 9 Relay 10 Beacon Switch 11 Hazard Switch 12 Alternator 13 Oil Switch 14 Starter Motor 15 Battery 16 Slow Blow Fuse 17 Water Temperature Sensor 18 Earth...

Page 430: ...030 WSM 9 M24 Continued The lighting system consists of main switch combination switch hazard light switch position light switch brake light switch head lights combination lights brake lights etc 9Y12...

Page 431: ...W BEAM and HIGH BEAM Current passes through the light circuit as shown in the figure above 9Y1210003ELM0020US0 2 TURN SIGNAL LIGHT The turn signal light switch which forms a combination switch with th...

Page 432: ...tion Switch Combination switch consist of head light switch turn signal light switch and horn switch Head Light Switch Turn Signal Light Switch Horn Switch 9Y1210003ELM0022US0 1 Head Light Switch 2 Tu...

Page 433: ...e blinked as shown in the figure above 9Y1210003ELM0023US0 Hazard Switch This is a pushing type switch to turn on the hazard lights The lamp 2 in the switch is lighted up by the current from outside o...

Page 434: ...itch The position lights are lighted up by the head light switch 9Y1210003ELM0025US0 5 BRAKE LIGHT The brake lights are lighted up by brake switch Current passes the circuit as shown in the figure abo...

Page 435: ...e applied to the diaphragm 2 is larger than the spring tension the terminal contact 1 is open separated from the body contact 3 If the pressure drops below approx 49 kPa 0 5 kgf cm2 7 1 psi the contac...

Page 436: ...through the fuel level sensor for the fuel quantity detection and through the coolant temperature sensor for the coolant temperature detection 9Y1210003ELM0032US0 1 Fuse 2 Battery 3 Slow Blow Fuse 4...

Page 437: ...for the fuel quantity detection and through the coolant temperature sensor for the coolant temperature detection 9Y1210003ELM0033US0 1 Starter Motor 2 Battery 3 Slow Blow Fuse 4 Coolant Temperature S...

Page 438: ...URE Coolant Temperature Sensor The coolant temperature sensor is installed to the cylinder head of engine and its tip is in touch with the coolant It contains a thermistor 4 whose electrical resistanc...

Page 439: ...Relay with OPC 9 S14 6 Glow Plug 9 S14 7 OPC Controller 9 S15 8 Key Stop Solenoid 9 S15 9 Safety Switch without OPC 9 S16 10 Safety Switch with OPC 9 S17 11 Starter 9 S21 12 Alternator 9 S21 13 Combin...

Page 440: ...ir or replace 9 S31 9 S35 Regulator defective Replace 9 S32 Wiring harness disconnected or improperly connected between battery positive terminal and regulator B terminal Repair or replace Cooling fan...

Page 441: ...15 Operator presence controller defective Replace 9 S15 PTO select lever switch defective Adjust or replace 9 S18 9 S20 PTO lever switch defective Adjust or replace 9 S16 to 9 S20 Shuttle shift lever...

Page 442: ...ler defective Replace 9 S15 Wiring harness disconnected or improperly connected between key stop solenoid relay and key stop solenoid between key stop solenoid relay between main switch and operator p...

Page 443: ...place 9 S32 Symptom Probable Cause Solution Reference Page Head Light Does Not Light Fuse blown Replace G 47 to G 50 Bulb blown Replace G 51 G 52 Wiring harness disconnected or improperly connected be...

Page 444: ...lasher unit defective Repair or replace 9 S27 Turn Signal Light Does Not Light Fuse blown Replace G 47 to G 50 Bulb blown Replace G 47 to G 50 Wiring harness disconnected or improperly connected Repai...

Page 445: ...ring harness disconnected or improperly connected between panel board and oil pressure switch Repair or replace Circuit in panel board defective Repair or replace Symptom Probable Cause Solution Refer...

Page 446: ...504 in Brush Length 10 5 mm 0 413 in 8 4 mm 0 331 in Item Factory Specification Allowable Limit Glow Plug Resistance Approx 0 9 Item Factory Specification Allowable Limit HST Pedal Switch HST Type Re...

Page 447: ...egarded damage to alternator and regulator may result 9Y1210003ELS0006US0 1 Battery Battery Voltage 1 Stop the engine and turn the main switch OFF 2 Connect the COM lead of the voltmeter to the batter...

Page 448: ...rometer at eye level The hydrometer reading must be taken at the highest electrolyte level Reference Specific gravity slightly varies with temperature To be exact the specific gravity decreases by 0 0...

Page 449: ...2 Main Switch Main Switch 1 Remove the steering wheel and the panel board 3 2 Disconnect the 4P connector 2 and remove the main switch 1 3 Perform the following checks 9Y1210003ELS0010US0 1 Main Switc...

Page 450: ...indicated the contacts of the main switch are faulty 9Y1210003ELS0012US0 2 Main Switch Key at ON Position 1 Set the main switch ON position 2 Measure the resistance with an ohmmeter across the B termi...

Page 451: ...T Position 1 Set and hold the main switch key at the START position 2 Measure the resistance with an ohmmeter across the B terminal and the 19 terminal across the B terminal an the 50 terminal and acr...

Page 452: ...op Solenoid Relay with OPC 1 Open the panel board and remove the key stop solenoid relay 1 2 Apply battery voltage across 2 terminal and 4 terminal and check for continuity across 1 terminal and 3 ter...

Page 453: ...a voltmeter between the lead terminal and the chassis 4 If the voltage at either position differs from the battery voltage the wiring harness or main switch is faulty 9Y1210003ELS0019US0 Glow Plug Co...

Page 454: ...the voltage with voltmeter between the terminal 1 terminal 2 of wiring harness side and body 4 If the voltage differs from the battery voltage the wiring harness or main switch is faulty 9Y1210003ELS...

Page 455: ...Lever Switch PTO Clutch Lever Switch Independent PTO lever in neutral Infinity Independent PTO lever in engaged 0 Shuttle Shift Lever Switch Shuttle lever in neutral 0 Shuttle lever in forward or reve...

Page 456: ...Safety Switch State Resistance Shuttle Shift Lever Switch Shuttle shift lever in neutral 0 Shuttle shift lever in forward or reverse Infinity PTO ON OFF Lever Switch PTO ON OFF lever in disengage 0 P...

Page 457: ...Shuttle shift lever in forward or reverse Infinity PTO ON OFF Lever Switch PTO ON OFF lever in disengage 0 PTO ON OFF lever in engage Infinity PTO Select Lever Switch PTO select lever in Rear PTO Mid...

Page 458: ...ndependent PTO Lever Switch PTO Clutch Lever Switch Independent PTO lever in neutral Infinity Independent PTO lever in engaged 0 HST Pedal Switch HST pedal in neutral pushed in 0 HST pedal in forward...

Page 459: ...utral Infinity Independent PTO lever in engaged 0 HST Pedal Switch HST pedal in neutral pushed in 0 HST pedal in forward or reverse Infinity PTO Select Lever Switch PTO select lever in Rear PTO Mid PT...

Page 460: ...the engine 4 Disconnect the connecting lead 3 from the starter C terminal 2 5 Connect a jumper lead from the starter S terminal 1 to the battery positive terminal post 6 Connect a jumper lead momentar...

Page 461: ...Switch Continuity when Setting Switch at OFF Position 1 Set the light switch to the OFF position 2 Measure the resistance with an ohmmeter across the B1 terminal 3 to the T terminal 6 the B1 terminal...

Page 462: ...osition 1 Set the turn signal light switch to the OFF position 2 Measure the resistance with an ohmmeter across the B2 terminal 4 and L terminal 9 and across B2 terminal 4 and R terminal 8 3 If infini...

Page 463: ...an ohmmeter across the B2 terminal 4 and L terminal 9 and across the B2 terminal 4 and R terminal 8 3 If 0 is not indicated at LEFT position the combination switch is faulty 9Y1210003ELS0032US0 Resist...

Page 464: ...meter across the B3 terminal 5 and the H terminal 10 3 If 0 is not indicated the combination switch is faulty 9Y1210003ELS0034US0 Resistance Horn button at OFF position B3 terminal H terminal Infinity...

Page 465: ...harness is faulty 9Y1210003ELS0036US0 Hazard Switch Continuity 1 Measure the resistance with ohmmeter across the a terminal 1 and c terminal 3 and across the d terminal 2 and e terminal 4 2 If the me...

Page 466: ...he right and make sure the right hand light gives flashes Make sure the same actions as above result 3 If both the hazard switch and the turn signal switch and the turn signal switch function but the...

Page 467: ...0US0 Engine Oil Pressure Switch Continuity 1 Measure the resistance with an ohmmeter across the switch terminal and the chassis 2 If 0 is not indicated in the normal state the switch is faulty 3 If in...

Page 468: ...oving the panel board from tractor remove the plate behind the panel 2 Remove the each lamp 3 Measure the lamp resistance 4 If it is infinity replace the lamp with new 9Y1210003ELS0043US0 Lamp specifi...

Page 469: ...0003ELS0045US0 Fuel Gauge and Coolant Temperature Gauge Continuity 1 Remove the panel board from the tractor 2 Check the continuity with an ohmmeter across the U terminal 2 and IGN terminal 3 and acro...

Page 470: ...5 NOTE Do not damage the brush and commutator Do not miss the ball 10 9Y1210003ELS0047US0 2 Alternator Pulley 1 Secure the hexagonal end of the pulley shaft with a double ended ratchet wrench as shown...

Page 471: ...S0050US0 IC Regulator 1 Unscrew the three screws holding the IC regulator and remove the IC regulator 1 9Y1210003ELS0051US0 Rectifier 1 Remove the four screws holding the rectifier and the stator lead...

Page 472: ...e retainer plate and remove the retainer plate 1 9Y1210003ELS0055US0 Bearing on Drive End Side 1 Press out the bearing from drive end frame 3 with a press and jig 1 9Y1210003ELS0056US0 Bearing at Slip...

Page 473: ...it with emery paper 2 Measure the brush length A with vernier calipers 3 If the length is less than the allowable limit replace the yoke assembly and brush holder 9Y1210003ELS0059US0 Brush Holder 1 Ch...

Page 474: ...or 1 Measure the resistance across each lead of the stator coil with an ohmmeter 2 If the measurement is not within the factory specification replace it 3 Check the continuity across each stator coil...

Page 475: ...he reverse direction IMPORTANT Do not use a 500 V megger for measuring because it will destroy the rectifier NOTE Do not use an auto digital multimeter Because it s very hard to check the continuity o...

Page 476: ...10 CABIN KiSC issued 05 2012 A...

Page 477: ...netic Clutch 10 M13 2 CONDENSER 10 M14 3 RECEIVER 10 M15 4 AIR CONDITIONER UNIT 10 M16 1 Expansion Valve 10 M16 2 Evaporator 10 M17 3 Heater Core 10 M18 4 Water Valve 10 M18 5 Blower 10 M19 3 SYSTEM C...

Page 478: ...r Hose Outside 2 Heater Inside 3 Water Valve 4 Control Panel 5 Outside Air Filter 6 Inside Air Filter 7 Roof 8 Front Air Outlet 9 Side Air Outlet 10 Receiver 11 Pressure Switch 12 Condenser 13 Compres...

Page 479: ...olves in the refrigerant circulates through the air conditioning cycle and performs the function of lubricating the compressor The conventional compressor oil for R12 does not dissolve in R134a so it...

Page 480: ...n the desired condition NOTE Do not pour water directly into the fresh air port while washing the vehicle 9Y1210003CAM0002US0 1 Control Panel 2 Recirculation Fresh Air Selection Lever 3 Front Air Outl...

Page 481: ...ill flow into the CAB This is helpful when you work in dusty conditions or if the glass windows get foggy RECIRCULATION Set the lever to the A position RECIRCULATION and the in CAB air will be recircu...

Page 482: ...e left to obtain cooler air Blower Switch Air volume can be changed in three steps At the HI position the largest air volume is obtained Air Conditioner Switch Push this switch to activate the air con...

Page 483: ...o raise the temperature in the CAB quickly set this lever to the RECIRCULATION position 3 Adjust the blower LO ME HI switch and the temperature control lever to achieve a comfortable temperature level...

Page 484: ...switch with indicator 5 Turn on the blower LO ME HI switch 6 Adjust the temperature control lever to the COOL or an intermediate position to achieve a comfortable temperature level NOTE In summer whe...

Page 485: ...r dehumidifying heating mode set the temperature control lever at the center position 3 Open the front air outlet and direct it to your feet 4 You can feel your head cool and your feet warm 9Y1210003C...

Page 486: ...utlet and direct it to the windshield 3 Shut the side air outlet 4 Set the recirculation fresh air selection lever to the FRESH AIR position 5 Set the blower switch and the temperature control lever t...

Page 487: ...porator 4 6 At this time warm air in a cabin is drawn into the evaporator 4 by the blower motor and is passed over those pipes transferring its heat to the refrigerant for evaporation The cooled air i...

Page 488: ...ith both scroll changes As a result the refrigerant is inhaled and compressed 9Y1210003CAM0013US0 Operation When the capacity between fixed scroll 4 increases with the rotational movement of the movab...

Page 489: ...to protect the circuit Even in the worst case the outflow of refrigerant is stopped at the minimum limit Reference In normal operation the high pressure switch is triggered first and the compressor st...

Page 490: ...the drive pulley 4 and compressor 8 magnetically The stator is fixed on the compressor housing and the pressure plate 1 is attached to the compressor shaft Two ball bearings 2 are used between the in...

Page 491: ...into liquid refrigerant The heat given off by the gaseous refrigerant in the condenser is the sum of the heat absorbed at the evaporator and the heat of work required by the compressor to compress the...

Page 492: ...timum flow of refrigerant within the system The receiver includes a desiccant 2 It has the job of removing moisture as the refrigerant circulates within the system The sight glass is installed on the...

Page 493: ...ooled sufficiently if the expansion valve outlet is too small If it is too wide frost will be produced on the evaporator decreasing cooling efficiency Thus the size of this small spray hole has to be...

Page 494: ...or The purpose of the evaporator 2 is just opposite to that of the condenser The state of refrigerant immediately after the expansion valve is 100 liquid As soon as the liquid pressure drops it starts...

Page 495: ...ike the evaporator or condenser Heat is exchanged between heated coolant passing through the core and air in the cabin or fresh outdoor air The cab air is heated through this process 9Y1210003CAM0023U...

Page 496: ...lower motor used is a ferrite type and its speed is controlled by resistors in 3 steps The fan used is a centrifugal type In this type of fan the air is drawn in parallel to the rotating axis and is b...

Page 497: ...lows to door D3 12 side passing through the heater core 3 Outlet air flow is controlled by door D3 Moving the air mode lever 1 opens and shuts door D3 and establishes the air passage according to the...

Page 498: ...N the thermostat temperature is more than 4 C 39 2 F Pressure Switch 5 ON if refrigerant pressure is between 0 196 MPa 2 0 kgf cm2 28 4 psi and 2 94 MPa 30 0 kgf cm2 426 psi Compressor Magnet Clutch 6...

Page 499: ...forgetting to turn off the blower motor 7 could result in a discharged battery 3 To protect against such trouble relays have been provided These relays have been made so that when current flows throu...

Page 500: ...relay has been made so that when current flows through its coil the contacts close to supply the power from the battery By employing this relay the current flowing through the main switch has been dec...

Page 501: ...When the blower switch is in OFF position even if the main switch is turned to ON position air conditioner relay does not operate 9Y1210003CAM0030US0 1 Battery 2 Slow Blow Fuse 3 Main Switch 4 Compres...

Page 502: ...of the capillary tube is positioned on the evaporator fins When the evaporator fins temperature is higher than the setting temperature of the thermostat the micro switch in the thermo switch is turned...

Page 503: ...e component from damage This system has a dual type pressure switch and this switch controls low pressure cut off and high pressure cut off Pressure Switch Dual Type The pressure switch is installed i...

Page 504: ...h OFF Position C When the refrigerant pressure is high When the pressure in the inlet line is higher than specified pressure the switch is turned OFF and disengages magnetic clutch Reference Setting p...

Page 505: ...D GAUGE 10 S12 2 DISCHARGING EVACUATING AND CHARGING 10 S16 1 Discharging the System 10 S16 2 Evacuating the System 10 S17 3 Charging the System 10 S18 4 Checking Charging Refrigerant Amount 10 S20 6...

Page 506: ...ring harness disconnected or improperly connected Repair Does Not Cool Compressor Does Not Rotate Fuse blown Replace Magnetic clutch defective Repair or replace 10 S32 A C switch defective Replace 10...

Page 507: ...Three Steps Resistor defective Replace 10 S24 Relay defective Replace 10 S22 Blower fan switch defective Replace 10 S22 Too Low Air Flow Rate Blown Itself in Trouble Blower is not tightened enough Ti...

Page 508: ...Refrigerant too short Check G 53 Gas leak at heat sensitive tube Replace 10 M16 Evaporator frosted Check or replace 10 S37 Low pressure pipe in trouble Cracked or clogged Replace 10 S37 Expansion valv...

Page 509: ...Wiper motor defective Short circuit of motor armature worn motor brush or seized motor shaft Replace 10 S26 Low battery voltage Recharge or replace G 24 Humming occurs on motor in arm operating cycle...

Page 510: ...re LO Pressure Side Less than approx 0 196 MPa 2 0 kgf cm2 28 4 psi Setting Pressure HI Pressure Side More than approx 2 94 MPa 30 kgf cm2 426 psi Air Conditioner Drive Belt Tension 10 to 12 mm 0 39 t...

Page 511: ...to 8 7 High pressure pipe screw and retainer nut between compressor and condenser High pressure pipe 1 retaining nut 19 6 to 24 5 2 0 to 2 5 14 5 to 18 1 High pressure pipe screw and retainer nut betw...

Page 512: ...unless necessary When it has to be heated use warm water of 40 C 104 F or lower Do not heat using boiling water IMPORTANT If the refrigerant O rings etc for R12 are used in the R134a air conditioner...

Page 513: ...n LO Valve is Opened and HI Valve is Closed Two circuits are established Port C LO pressure gauge 1 Port B Port D Port A HI pressure gauge 2 NOTE Schrader valve D must be opened 9Y1210003CAS0008US0 Wh...

Page 514: ...connecting push carefully so the pipe doesn t bend When connecting the quick disconnect connector should the sleeve 7 move before the quick link connector can be connected to the charging valve move t...

Page 515: ...and cannot be used Therefore a new electric gas leak tester with greater sensitivity has been designed and can be used with both R134a and R12 Reference Leak tester with halide torch Since the reacti...

Page 516: ...Recovery and Recycling Machine When there is necessity of discharging the refrigerant on repairing the tractor it should use recovery and recycling machine Don t release the refrigerant into the atmo...

Page 517: ...Connect the charging hose 1 red to the HI pressure side charging valve 2 and connect the charging hose 4 blue to the LO pressure side charging valve 3 NOTE Be sure to drive out the air in the chargin...

Page 518: ...vel See page 10 S20 9Y1210003CAS0020US0 Excessive Refrigerant or Insufficient Condenser Cooling 1 Symptoms seen in refrigerating cycle Both LO and HI pressure side 1 2 pressures too high LO pressure s...

Page 519: ...t evacuation 9Y1210003CAS0022US0 Moisture Entered in the Cycle 1 Symptoms seen in refrigerating cycle The air conditioner operates normally at the beginning but over time LO pressure side 1 pressure i...

Page 520: ...xpansion valve Replace the receiver Evacuate and charge in proper amount of new refrigerant See page 10 S20 If caused by gas leakage in heat sensitizing tube replace the expansion valve 9Y1210003CAS00...

Page 521: ...System Discharging R134a Refrigerant Prepare for the R134a refrigerant recovery and recycling machine 1 Connect low pressure side hose blue from the recovery and recycling machine to LO pressure side...

Page 522: ...5 When LO pressure gauge 3 reading is more than 750 mmHg 299 in Hg stop the vacuum pump 8 and close both valves 6 10 of manifold gauge fully 6 Wait for over 5 minutes with the HI and LO pressure side...

Page 523: ...2 Connect the center charging hose 2 to the can tap valve 7 fitting and then loosen the center charging hose at the center fitting of manifold gauge until hiss can be heard Allow the air to escape for...

Page 524: ...rol lever to maximum cooling position and the blower switch to HI position 4 Open the LO pressure side valve 6 of manifold gauge and the can tap valve 1 on refrigerant container and charge the refrige...

Page 525: ...hich pass through the sight glass becomes as stated below depending on refrigerant charged amount Insufficient refrigerant charge Air bubbles pass continuously the sight glass when pressure on the LO...

Page 526: ...replace 9Y1210003CAS0033US0 Stator Coil 1 Remove the 2P connector from the magnetic clutch Measure the resistance of the stator coil with an ohmmeter across the 2P connector on the magnetic clutch 2...

Page 527: ...e voltage across the terminal 2 and chassis should be approx battery voltage 9Y1210003CAS0036US0 2 Relay Test 1 Remove the relay 1 2 Connect the battery 2 and bulb 3 with the relay 1 as shown in the l...

Page 528: ...aulty 9Y1210003CAS0039US0 A C Blower Motor Test 1 Remove the inner roof and the outer roof 2 Turn the blower motor 2 by hand and check whether it turns smoothly 3 Disconnect the connector 1 of blower...

Page 529: ...age 1 Turn the main switch ON 2 Measure the voltage with a voltmeter across the connector 7 terminal and 6 terminal 3 If the voltage differs from the battery voltage the wiring harness A C relay or fu...

Page 530: ...old gauge If this pressure reading differs largely with the setting pressure replace the pressure switch with a new one 2 LO Pressure Side 1 Disconnect 2P connector of pressure switch 2 Measure the re...

Page 531: ...faulty Reference WASH I OFF side of the wiper switch remains pushed in WASH II ON side remains pushed in after the wiper switch is switched ON and remains switched ON 9Y1210003CAS0046US0 Front Wiper M...

Page 532: ...ted the switch is faulty 9Y1210003CAS0049US0 2 DISASSEMBLING AND ASSEMBLING 1 Separating Cabin from Tractor Removing Battery 1 Removing the wing nut 4 2 Remove the battery retainer 2 3 Disconnect the...

Page 533: ...bolts 2 and the front wiper cover 1 5 Disconnect the coupler 6 Remove the meter panel 5 7 Disconnect the hour meter cable 8 from the meter panel 8 Remove the panel lower cover 6 9 Remove the spring 1...

Page 534: ...e bolts 2 and the HST pedal 1 2 Remove the grip 4 Remove the differential lock pin at the right side rear axle shaft 3 Remove the bolts 6 and the seat front cover 5 from the fenders and the steps 9Y12...

Page 535: ...Water Hoses 1 Loosen the water drain cock 1 2 Drain the coolant 3 Remove the hose clamps 3 Disconnect the water hoses 2 from the engine When reassembling Fill the coolant to the specified capacity 9Y1...

Page 536: ...with the nylon slings not to damage the other roof 2 Dismount the cabin from the tractor body 3 Support the cabin with the rigid jacks When reassembling If the beam shield 1 is damaged replace it with...

Page 537: ...rging the Refrigerant See page 10 S16 Apply compressor oil DENSO CO ND OIL8 or equivalent to the O rings and take care not to damage them When replacing compressor When replacing the compressor with a...

Page 538: ...is confirmed to turn rotor by hand after assembling and not contact with stator Check and adjust the air gap before tight the magnet clutch mounting screw to the specified torque 9Y1210003CAS0059US0...

Page 539: ...boss of shaft as a minimum Match and assemble the concave part 3 of the front housing 5 and the pin 4 of stator Reference Code No for circlip T1065 87440 9Y1210003CAS0061US0 3 Removing Receiver and C...

Page 540: ...ct the pipe 8 2 Remove the bolts 7 from the receiver 1 3 Remove the bolts 2 4 Remove the receiver 1 with the pipe 8 from the tractor body When reassembling Do not damage the O rings 9Y1210003CAS0063US...

Page 541: ...1 2 from the air conditioner unit cover 3 2 Remove the bolts 4 5 3 Disconnect the hooks 6 4 Remove the air conditioner unit cover 3 When assembling Install the cables to the original positions 9Y1210...

Page 542: ...e 2 3 Remove the water valve 2 4 Loosen the clamps 3 and disconnect the water hoses 4 from the water pipes 5 5 Remove the heater unit 6 When assembling Connect the water hoses to the water valve and w...

Page 543: ...panel 7 3 Remove the nuts 11 and the front glass plates 3 4 Remove the bolts 8 and the front glass plates 9 5 Hold and remove the front upper glass 1 with the wiper motor assembly 9Y1210003CAS0066US0...

Page 544: ...and remove the external cir clips 7 and the door hinge pins 8 3 Open the door and hold the door handle 4 4 Remove the door glass 1 When reassembling After installing the bracket to the hinge hook the...

Page 545: ...5 2 Remove the external cir clip 6 and the plain washer 7 3 Hold the rear glass 2 4 Slide the rear glass 2 to the right side so that the hinges 1 may separate from the cabin frame 5 Remove the rear gl...

Page 546: ...move the oil liquid gasket from the glass 3 Clean the glass surface securely 4 Apply the liquid gasket Three Bond 1521C or equivalent to the new weather strip to the bottom side as shown in the figure...

Page 547: ...rip by a wooden hammer 9Y1210003CAS0073US0 3 SERVICING 1 Compressor Magnetic Clutch Air gap 1 Measure the air gap with a feeler gauge 2 When the measurement value comes off from factory specification...

Page 548: ...STRIAL MACHINERY SERVICE LTD 64 ISHIZU KITAMACHI SAKAI KU SAKAI CITY OSAKA 590 0823 JAPAN PHONE 81 72 241 1129 FAX 81 72 245 2484 E mail ksos pub kubota co jp 2007 01 S EI EI engusa Printed in Japan 2...

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