Kyoeisha Baroness LM531 Service Manual Download Page 41

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General Inspection and Repair .............Page 4-2

Hydraulic Circuit Configuration ......... Page 4-12

Hydraulic System Layout .....................Page 4-12
Hydraulic Circuit Diagram ....................Page 4-16
Specifications .......................................Page 4-17
Flow of Hydraulic Oil ............................Page 4-18

Hydraulic Circuit Flow .........................Page 4-21

Traveling Circuit ...................................Page 4-21
Raise/Lower Circuit ..............................Page 4-23
Steering Circuit .................................... Page 4-25
Reel Rotation Circuit ............................Page 4-27

Measurement ........................................Page 4-29

Note ..................................................... Page 4-29
Hydraulic Pressure Measurement
Preparation .......................................... Page 4-30
Traveling Circuit ...................................Page 4-31
Up/Down Circuit (Rise) ........................ Page 4-35
Steering Circuit (Turning to Left) ......... Page 4-37
Charge Circuit ......................................Page 4-39
Reel Rotation Circuit ............................Page 4-41

Hydraulic System

LM531

Hydraulic System

Page 4-1

Summary of Contents for Baroness LM531

Page 1: ...5 Unit Reel Mower Service Manual Serial No LM531 10001 Ver 1 0 Technical docuentation No TD LM531 008 02...

Page 2: ...cates the articles regarding Danger Warning or Caution Those articles describe important safety precautions and so read them carefully to understand completely before operating the machine Failure to...

Page 3: ...on this product refer to the following manuals Baroness Owner s Operating Manual The Engine s Owner s Manual The Battery s Owner s Manual For details on parts refer to Parts Catalog As for repair item...

Page 4: ...LM531 Introduction...

Page 5: ...guration Page 4 12 Hydraulic Circuit Flow Page 4 21 Measurement Page 4 29 Electrical System Page 5 1 General Inspection and Repair Page 5 2 Electrical System Outline Page 5 8 Electrical Circuit Config...

Page 6: ...LM531 Contents...

Page 7: ...Page 1 2 Training Page 1 2 Preparation Page 1 2 Operation Page 1 3 Maintenance and Storage Page 1 4 Safety Signs and Instruction Signs Page 1 5 About Safety Signs and Instruction Signs Page 1 5 Safet...

Page 8: ...opes Incorrect hitching and load distribution 1 2 3 1 2 Never allow children or people unfamiliar with these instructions to use or service the machine Local regulations may restrict the age of the op...

Page 9: ...nd hollows and other hidden hazards 2 3 4 5 6 7 8 9 1 2 3 4 1 2 3 4 Never operate across the face of the slope unless the machine is designed for this purpose Never drive the machine on a slope with a...

Page 10: ...al lock is provided 14 15 16 17 18 19 20 21 22 23 24 1 2 To reduce the fire hazard keep the engine silencer muffler battery compartment fuel storage area cutting unit and drives free of grass leaves o...

Page 11: ...battery Wear protective clothing and use insulated tools Keep all parts in good working condition and all hardware tightened Replace all worn or damaged decals Keep all nuts bolts and screws tight to...

Page 12: ...LM531 Safety Page 1 6 Safety Signs and Instruction Signs...

Page 13: ...Recycle and Waste Disposal Page 2 2 About Recycle Page 2 2 About Waste Disposal Page 2 2 Disposal LM531 Disposal Page 2 1...

Page 14: ...economical use of resources It may be required by local laws About Waste Disposal Make sure that waste generated when servicing or repairing the machine is disposed of in accordance with local regula...

Page 15: ...aring Page 3 9 Stop Ring Page 3 10 Spring Pin Page 3 10 Special Tool Page 3 12 List of Special Tools Page 3 12 Usage Page 3 19 Bearing Driver Page 3 19 Oil Seal Installer Page 3 19 Jacking Up The Mach...

Page 16: ...9 7 32 0 21875 5 556 23 32 0 71875 18 256 15 64 0 234375 5 953 47 64 0 734375 18 653 1 4 0 2500 6 350 3 4 0 7500 19 050 17 64 0 265625 6 747 49 64 0 765625 19 447 9 32 0 28125 7 144 25 32 0 78125 19 8...

Page 17: ...bic Meters Cubic Centimeters m3 m3 cm3 0 7646 0 02832 16 39 Weight Tons Short Pounds Ounces Avdp sh tn lb oz Metric Tons Kilograms Grams ton kg g 0 9078 0 4536 28 3495 Pressure Pounds Sq In Pounds Sq...

Page 18: ...e proximity switch Within 5 0 mm 0 20 in Clearance from detection magnet 2 notches Position of detection magnet Parking brake fulcrum part Traveling neutral switch Within 5 0 mm 0 20 in Clearance from...

Page 19: ...for the galvanized or parkerized bolts In case that the strength of internal thread is weak it is not applied Do not use rusty or sand attached screw Otherwise it may cause insufficient tightening eve...

Page 20: ...8 44 26 61 96 7 10 71 38 101 97 61 96 88 51 M6 8 11 81 58 112 17 70 81 97 36 14 18 142 76 183 55 123 91 159 32 M8 23 29 234 53 295 71 203 57 256 68 28 38 285 52 387 49 247 83 336 34 M10 45 57 458 87 5...

Page 21: ...600 677 89 15 3 4 117 68 1200 1 355 78 19 3 4 117 68 1200 1 355 78 25 1 137 30 1400 1 581 74 32 1 1 4 166 72 1700 1 920 69 38 1 1 2 205 94 2100 2 372 61 50 2 245 17 2500 2 824 54 Fittings with Paralle...

Page 22: ...F 280 300 2 855 16 3 059 10 2 478 28 2 655 30 Wheel K0011120352 Bolt heat treated M12 35P1 5 110 1121 69 973 61 Engine K0017100252 Bolt small heat treated M10 25P1 25 45 76 458 87 591 43 398 30 774 97...

Page 23: ...using the bearing driver 3 2 1 gr5d95 001 Bearing_001 1 Shaft 2 Bearing 3 Bearing driver When pressing the bearing into the housing apply pressure evenly around the outer ring of the bearing using th...

Page 24: ...ssemble the stop ring so that the sharp edge side receives the load indicated by an arrow 1 3 2 4b82yb 002 Stop Ring_002 1 1 Shaft 2 Stop ring sharp edge side 3 Stop ring groove When installing the st...

Page 25: ...spring pin if a load is applied in the direction of the arrow 1 A B 1 iv83dd 002 Spring Pin_002 1 Spring pin A Direction of rotation B Parallel direction If two spring pins are installed together ensu...

Page 26: ...of high pressure parts Pressure gauge for extremely low pressure measurements vasdfi 004 K4701000030 Pressure For the range of 0 5 MPa For the range of 0 725 20 psi For the range of 0 50 99 kgf cm2 Pr...

Page 27: ...006 K4701000040 Used as a joint for pressure pipes Female connector 1015 04 vasdfi 007 K3009000290 Y Used as a connector to attach the hydraulic hose to the pressure gauge T joint TEF PT3 8 vasdfi 01...

Page 28: ...K3020080601 Y Used for bushing for size adjustment during pressure measurements Adapter 1013 12 q9c6v6 008 K3000120002 Y Used as an adapter for the T joint during pressure measurements WP280 6 hose 1...

Page 29: ...hose for extremely low pressure measurements T joint TEF PT1 4 vasdfi 013 K3021040002 Y Used to install a pressure gauge between the hydraulic hoses Adapter 1031 6 q9c6v6 038 K3000060002 Y Used as an...

Page 30: ...adapter for the T joint during pressure measurements Different diameter elbow PT3 8 PF1 2 q9c6v6 039 K3006000082 Y Used as an adapter for the T joint during pressure measurements Different diameter e...

Page 31: ...pressure measurement port Reducing adapter PT1 8 PF1 4 q9c6v6 041 K3007000032 Y Used as an adapter when installing the pressure gauge to the pressure measurement port 90 adjustable elbow PT3 8 7 8 14U...

Page 32: ...ng base of the front wheel Bolt heat treated M12 35P1 5 q9c6v6 045 K0034120352 One of the parts that compose the wheel mounting base bracket F kit and is used for removal and installation of the wheel...

Page 33: ...ver_002 1 Bearing Driver 2 Hammer Oil Seal Installer Use an oil seal installer to install the oil seal etc correctly Caution Be careful not to hit your hand with a hammer etc 1 2 Position the oil seal...

Page 34: ...the machine securely with jack stands or appropriate blocks Failure to do so may cause the machine to move or fall resulting in injury or death Important Only place a jack under the jack up points spe...

Page 35: ...ule Other locations where the specified grease or lubricant is used are indicated in Greasing Points Add grease using the specified grease or lubricant Greasing Points Grease nipples are installed in...

Page 36: ...e mower unit Mower units 1 and 4 8bq62b 174 Greasing Points_003 Mower unit 5 8bq62b 175 Greasing Points_004 1 2 Mower unit 2 and 3 8bq62b 176 Greasing Points_005 Mower unit fulcrum There is one greasi...

Page 37: ...There are two greasing points on the cylinder shaft 8bq62b 450 Greasing Points_010 5 8bq62b 451 Greasing Points_011 Cylinder shafts 4 and 5 There is one greasing point each on the cylinder shafts 8bq6...

Page 38: ...2 1 9llqa9 044 Lubricating Points_001 Location No of greasing points 1 Mower cylinder spherical bearing 4 2 Steering cylinder spherical bearing 2 Mower cylinder spherical bearing There is one point o...

Page 39: ...Rear left wheel 8bq62b 212 Lubricating Points_005 Maintenance Standards and Maintenance LM531 Maintenance Standards and Maintenance Page 3 25 Lubrication...

Page 40: ...LM531 Maintenance Standards and Maintenance Page 3 26 Lubrication...

Page 41: ...2 Hydraulic Circuit Diagram Page 4 16 Specifications Page 4 17 Flow of Hydraulic Oil Page 4 18 Hydraulic Circuit Flow Page 4 21 Traveling Circuit Page 4 21 Raise Lower Circuit Page 4 23 Steering Circu...

Page 42: ...pair check to see whether the hydraulic system functions normally and whether there are any broken parts When the hydraulic system has been repaired or replaced operate the machine slowly idling the e...

Page 43: ...pment such debris and contaminant must be removed to prevent failure of other hydraulic equipment In the event that failure of hydraulic equipment is found remove hydraulic hoses and piping of the aff...

Page 44: ...ity 15 C 59 F 0 873 g cm3 0 0315 lb in3 0 855 g cm3 0 0309 lb in3 0 869 g cm3 0 0313 lb in3 API Gravity 30 6 34 0 31 3 Flash Point Open Cup 230 C 446 F 258 C 496 F 202 C 396 F Pour Point 30 C 22 F 40...

Page 45: ...c tank and suction filter if attached and then replace the hydraulic oil and filter Make proper adjustment and connection and make sure that there are neither broken parts nor oil leakage Make sure th...

Page 46: ...r deterioration according to the maintenance schedule When replacing hydraulic hoses check that they are straight no twists before loosening the hose Use two spanners when replacing hydraulic hoses St...

Page 47: ...nger be rotated by hand is called the zero point w7s31b 006 Bite Type Tube Fitting_006 4 5 Matchmarking the zero point and further tightening the nut will cause the sleeve to bite into the tube At thi...

Page 48: ...nt w7s31b 010 Bite Type Tube Fitting_011 7 Reuse of piping The bite type fitting can be reused if an inspection finds no flaw or other damage on the sleeve surface Done properly disassembly and retigh...

Page 49: ...educes the thread strength If the washer goes too deeply into the other side port the washer gets deformed which leads to oil leakage Rough installation makes the elbow and nut overloaded which leads...

Page 50: ...aling Tape Important Using the sealing tape with its end out of the edge face may cause a trouble of the machine due to its debris invading the hydraulic circuit 1 2 ugh2b1 001 How to Use The Sealing...

Page 51: ...tighten the screw about 1 5 to 2 turns from edge to root starting from the point of 1 to 2 threads apart from the edge face of the thread 1 2 ugh2b1 003 How to Use The Sealing Tape_003 1 Edge face 2...

Page 52: ...yout_001 1 Gear motor 7 Cross valve 13 Orbitrol 2 Up down cylinder 8 Oil cooler 14 Stop valve 3 Double multi valve 9 Steering cylinder 15 Slow return valve 4 Wheel motor 10 Cartridge filter 16 Electro...

Page 53: ...ight sides of the front wheel motors this cross valve flows the fluid energy to the opposite sides of the rear wheel motors This is located at the end of the main vehicle behind the pivot Oil cooler T...

Page 54: ...lower front part of the operation panel Slow return valve These valves control the flow by changing the size of the aperture in the hydraulic circuit and control the speed of the actuator hydraulic c...

Page 55: ...Hydraulic System LM531 Hydraulic System Page 4 15 Hydraulic Circuit Configuration...

Page 56: ...tor Cross valve Rear wheel motor Up down cylinder Manifold Gear motor Gear motor Gear motor Gear motor Gear motor Electromagnetic check valve Stop valve R1 R2 0 8 1 6 R3 E A1 B1 B2 Mower 2 Mower 3 Mow...

Page 57: ...0 0 cm3 rev 18 91 in3 rev Reel motor EATON gear motor Gear motor MB6AK379 Displacement 22 0 cm3 rev 1 34 in3 rev Steering control unit Orbitrol AJ02010 Displacement 80 0 cm3 rev 4 88 in3 rev Relief se...

Page 58: ...Power Steering Turning to Left_001 shows flow of oil The flow of oil shows that for 4WD forward traveling and for power steering turning to left Name in above shows port name 1 Piston pump 5 Wheel mo...

Page 59: ...The flow of oil shows that for raising the mower unit shows the port name inside 1 Piston pump 6 Manifold 11 3 cylinder 2 Double multi valve 7 Electromagnetic check valve 12 4 cylinder 3 Hydraulic tan...

Page 60: ...ting with Mower Unit_001 shows flow of oil The flow of oil shows that for cutting with the mower unit Name in above shows port name 1 Piston pump 5 1 motor 9 5 motor 2 Double multi valve 6 2 motor 10...

Page 61: ...e Low pressure Charge inlet return direction Orbitrol Front wheel motor Rear wheel motor Cross valve Gear pump Line filter JIS B8356 30 m Piston pump Forward Reverse R1 24 5MPa R2 24 5MPa R3 1 1MPa Su...

Page 62: ...re Charge inlet return direction Orbitrol Front wheel motor Rear wheel motor Cross valve Gear pump Line filter JIS B6356 30 m Piston pump Forward Reverse R1 24 5MPa R2 24 5MPa R3 1 1MPa Suction filter...

Page 63: ...rection Up down cylinder Mower 5 Mower 1 Mower 4 Electromagnetic check valve Electromagnetic check valve Slow return valve Slow return valve Mower 1 Mower 5 Mower 3 Mower 4 Mower 2 Gear motor Gear mot...

Page 64: ...Mower 5 Mower 1 Mower 4 Slow return valve Slow return valve Mower 1 Mower 5 Mower 3 Mower 4 Mower 2 Gear motor Gear motor Gear motor Gear motor Gear motor Double Gear pump Double multi valve Oil cool...

Page 65: ...et return direction R4 8 8MPa L R P T R1 R2 R4 R3 A B E E P1 P2 Double gear pump Piston pump Steering cylinder Orbitrol Suction filter 150W Line filter JIS B8356 30 m zujak2 005 Steering Cylinder Turn...

Page 66: ...et return direction R4 8 8MPa Double gear pump Piston pump Steering cylinder Orbitrol Suction filter 150W Line filter JIS B8356 30 m L R P T R1 R2 R4 R3 A B E E P1 P2 c3cs72 005 Right Turn of Steering...

Page 67: ...ntake return Direction Mower 2 Mower 3 Mower 5 Mower 1 Mower 4 Mower 1 Mower 5 Mower 3 Mower 4 Mower 2 Gear motor Gear motor Gear motor Gear motor Gear motor Double Gear pump Double multi valve Oil co...

Page 68: ...2 Mower 2 Mower 3 Mower 5 Mower 1 Mower 4 Gear motor Gear motor Gear motor Gear motor Gear motor Double Gear pump Double multi valve Oil cooler Stop valve Manifold Suction filter 150W High pressure Lo...

Page 69: ...efore starting pressure measurement Warning Be sure to depressurize the hydraulic system before inspecting or repairing it When hydraulic equipment is removed cap or plug it to prevent contamination o...

Page 70: ...illustration Pressure gauge Pressure gauge seal Pressure gauge joint Female connector Hydraulic hose high pressure Reference List of Special Tools Page 3 12 The assembled hydraulic pressure gauge can...

Page 71: ...nlet return direction Orbitrol Steering cylinder Front wheel motor Rear wheel motor Cross valve Oil pressure gauge Double gear pump Line filter JIS B8356 30 m Piston pump Forward Reverse R1 24 5MPa R2...

Page 72: ...002 1 Piston pump 2 90 adjustable elbow PT3 8 7 8 14UNF 3 Reducing adapter PT1 8 PF1 4 4 Pressure gauge for high pressure measurements 5 Taper plug PT1 8 with a square head 1 1 2 3 Secure the high pre...

Page 73: ...rn direction Orbitrol Steering cylinder Front wheel motor Rear wheel motor Cross valve Oil pressure gauge Double gear pump Line filter JIS B6356 30 m Piston pump Forward Reverse R1 24 5MPa R2 24 5MPa...

Page 74: ...F1 4 to the G1 port of the cross valve 1 2 3 Install the pressure gauge for high pressure measurements to the reducing adapter PT1 8 PF1 4 3 1 2 9ozqjd 006 Reverse Traveling 2WD _003 1 90 adjustable P...

Page 75: ...or Gear motor Gear motor Gear motor Gear motor Double Gear pump Double multi valve Oil cooler Stop valve Manifold Suction filter 150W High pressure Low pressure charge Intake return Direction Up down...

Page 76: ...und Remove the lower hydraulic hose installed on the hydraulic cylinder of mower unit 2 from the 90 elbow 1 3 4 2 z4kw7w 027 Up Down Circuit Rise _003 1 1 2 3 2 3 1 Mower unit 2 2 Hydraulic cylinder 3...

Page 77: ...ection R4 8 8MPa L R P T R1 R2 R4 R3 A B E E P1 P2 Double gear pump Piston pump Steering cylinder Orbitrol Suction filter 150W Line filter JIS B8356 30 m Oil pressure gauge g2hgdk 005 Steering Circuit...

Page 78: ...1013 6 4 Mounting position of 90 elbow Remove the hydraulic hose from the 90 elbow attached to the hydraulic cylinder 2 1 3 g2hgdk 001 Steering Circuit Turning to Left _003 1 Hydraulic cylinder 2 Hyd...

Page 79: ...t return direction Orbitrol Steering cylinder Front wheel motor Rear wheel motor Cross valve Double gear pump Line filter JIS B8356 30 m Piston pump Forward Reverse R3 1 1MPa Suction filter 150W Oil p...

Page 80: ...Charge Circuit_002 1 Pressure gauge for extremely low pressure measurements 2 Reducing elbow PT3 8 PF1 2 3 T joint TEF PT3 8 4 Reducing adapter PT3 8 PF1 4 5 Hydraulic hose for extremely high pressur...

Page 81: ...gnetic check valve Electromagnetic check valve Mower 3 Mower 2 Mower 5 Mower 1 Mower 4 Mower 1 Mower 5 Mower 3 Mower 4 Mower 2 Gear motor Gear motor Gear motor Gear motor Gear motor Double Gear pump D...

Page 82: ...1 1 2 3 1 Pressure gauge for high pressure measurements 2 T joint TEF PT3 8 3 Reducing adapter PT3 8 PF1 4 4 Adapter 1013 9 5 Hydraulic hose for high pressure measurements Move the machine to a hard...

Page 83: ...he wooden board can be attached securely to the front stay past the center of the reel cutter Insert a tough wooden board firmly into the reel cutter of mower unit 4 1 3 2 dmxdti 015 Reel Rotation Cir...

Page 84: ...LM531 Hydraulic System Page 4 44 Measurement...

Page 85: ...lectrical components Page 5 26 About The Electrical Components Page 5 26 Fuse Box Page 5 26 Fusible Link Page 5 27 Key Switch Page 5 28 Seat Switch Page 5 29 Rocker Switch Page 5 29 Proximity Switch P...

Page 86: ...rt machine body etc 1 The electrolyte contained in the battery is sulfuric acid Contact of the electrolyte sulfuric acid with the skin could cause blindness or burns Contact of the electrolyte with th...

Page 87: ...s such as benzene thinner gasoline or other organic solvents detergents or chemical dusters Doing so could result in damage to the battery case and electrolyte leakage Select a battery that has the sa...

Page 88: ...el and refilling Warning When refilling do not fill purified water above the UPPER LEVEL line Doing so may result in electrolyte leaks Check the electrolyte level from the side of the battery and refi...

Page 89: ...measured with a hydrometer The standard temperature for the specific weight of battery electrolyte is 20 C and the specific weight increases or decreases by 0 0007 in accordance with the temperature c...

Page 90: ...immediately and wait for 30 minutes after charging Failure to observe these precautions could cause a fire or an explosion Caution The temperature of the electrolyte must be 45 C or lower during char...

Page 91: ...Electrical System LM531 Electrical System Page 5 7 General Inspection and Repair...

Page 92: ...ut M3 S4 S2 S1 M2 3 SNS1 S5 SNS4 SNS2 8 K1 K11 BZ SOL1 SOL2 SNS5 SOL3 SOL4 SNS3 7 1 16 2 4 K5 K4 S3 M1 K10 K9 K8 K6 K7 K3 K2 6 5 11 14 13 12 10 9 15 erq4ky 025 Electrical Part Layout_001 LM531 Electri...

Page 93: ...tch is used to start run glow or stop the engine It is located on the operation panel S2 Reel rotation switch The reel rotation switch is used to rotate or stop the reel or control the up position of...

Page 94: ...down lever DOWN to control the rotation of the reel cutter It is located in the lower right side of the fuel tank K8 Relay Seat switch This is one of the relays that constitute the interlock system I...

Page 95: ...down solenoid It is interlocked with the proximity switch It is a solenoid for activating the slight lift function When you turn the reel rotation switch ON and operate the mower unit up down lever to...

Page 96: ...tank 3 Pilot lamp This displays the status of the engine charge glow and oil pressure with the illumination of the lamps It is located on the operation panel 4 Fuse box Each electrical device is conne...

Page 97: ...ne under the hood 13 Water temperature switch If the engine coolant temperature reaches a certain temperature the water temperature switch is activated It is mounted on top of the engine under the hoo...

Page 98: ...L 75 BW 76 WB 68 G 42 3 Br 72 Y 8 1 L 6 1 YW 25 LW 73 WB G Br YW BW Y L LW 9 10 11 12 15 16 COM 13 14 1 2 3 4 5 6 7 8 F G H I J A B C D E OFF ON B AC1950 Fuel gauge Water temperature gauge Fuse box Fu...

Page 99: ...16 Y 20 R R Vin 75D23L L IG Oil pressure switch Glow plug Water temperature switch Battery Water temperature sensor Glow lamp timer Relay Starter Proximity switch Pump neutral Relay Reel rotation ON R...

Page 100: ...ion Important When you restart the engine after the safety device stops the engine be sure to return the ignition key to the OFF position first and then restart it In the event the operator leaves the...

Page 101: ...hes 4 and 5 and up down lever one by one to make sure that the interlock system is activated Electrical Circuit Configuration Engine Start Circuit There are four interlock switches related to engine s...

Page 102: ...WL W RW RW R R G RG GW B R B RW L IG 75D23L F G H I J A B C D E E F G H A B D C sldqbs 003E Engine Start Circuit_001 S1 Key switch K5 Relay Reel rotation OFF 6 Fusible link 30 A S2 Reel rotation switc...

Page 103: ...ts during engine operation When engine operation conditions are satisfied the relay engine stop solenoid operates and the fuel cut solenoid is activated along with it While the fuel cut solenoid is ac...

Page 104: ...H I J A B C D E L IG 75D23L 9 10 11 12 15 16 COM 13 14 1 2 3 4 5 6 7 8 Vin OFF ON B AC 19 50 Vin ojv6cd 003E Engine Start Stop Circuit_001 S1 Key switch K8 Relay Seat switch 6 Fusible link 30 A S2 Re...

Page 105: ...down solenoid 5 Mower up down solenoid Each relay Operating outline of electrical circuits during mower unit up down The operation of the mower unit up down lever operates the terminal relay and contr...

Page 106: ...B E YB BW G Br Y L YW LW Y RY RW RW G G L YB Br BW WY WY B E B E R R 75D23L E F G H A B D C pz6f78 005E Mower Unit Up Down Circuit_001 S2 Reel rotation switch K10 Relay 5 Proximity switch SNS 5 Proxi...

Page 107: ...he terminal relay and relay lever down are activated to operate the solenoids and control the reel cutter rotation Operating outline of electrical circuits during reel cutter reverse rotation The reel...

Page 108: ...B G Br Y L Y RY RW RW RW G G L YB WL W Br YR WB BW BW WY WY GY GY BY BY BrL BrL RW RW R R 75D23L E F G H A B D C dmxdti 035E Reel Rotation Circuit_001 S2 Reel rotation switch K9 Relay 4 Proximity swit...

Page 109: ...pproximately 4 2 dm3 4 2 L 1 11 gal US lower than the specified level Inspect and adjust the buzzer EBM 12 if there is a defect with the operation of the buzzer EBM 12 Alarm Buzzer Circuit Glow Start...

Page 110: ...harge lamp oil pressure engine oil pressure lamp water temperature gauge buzzer hour meter fuel gauge E 15 A Reel normal rotation solenoid reel reverse rotation solenoid slight lift check valve F 15 A...

Page 111: ...k Important When replacing fuses clean the fuse holder with compressed air before installing fuses The fuse can be removed by pulling it up away from the holder Note If the fuse is a type with a cap a...

Page 112: ...e ignition key is kept in the GLOW position the glow plug is generating heat and the thermo start lamp is turned on The lamp turns off at the specified time However the lamp turning off is not related...

Page 113: ...C t3inzb 002 Rocker Switch_001 1 Rocker Switch 2 Conduction between A and C 3 No conduction between A and C Proximity Switch Proximity switches detect that objects are nearby through non contact metho...

Page 114: ...ter the space below the mower units Caution Before work make sure that there are no people around the machine Make sure that the parking brake is applied Make sure that there are no people around the...

Page 115: ...AVS0 85 Br AVS0 85 L AVS0 85 B AVS0 85 WL AVS1 25 W AVS1 25 BY AVS1 25 BrL AVS0 85 L AVS0 85 G AVS0 85 Y AVS0 85 G AVS1 25 BrL AVS1 25 GY 2 3 4 dmxdti 036 Reel Rotation Circuit_003 B Black R Red Y Yel...

Page 116: ...aise all the mower units Lower the mower unit 4 and make sure that the reel starts rotating in a position where the bed knife outer end is lower than 400 mm 15 75 in from the ground If there are any a...

Page 117: ...t part comes close to the sensing part Press the traveling pedal to the reverse side and then return the pedal to the neutral position During the procedure check that the relay generates a sound when...

Page 118: ...ral brake 1 2 3 The figure shows the fitting faces of removed 6 polar relays Relay judgment table 1 2 3 AVS0 85 RW AVS0 85 RW AVS0 85 RW AVS0 85 YL AVS0 85 GL AVS0 85 G AVS0 85 BW AVS0 85 WB AVS0 85 W...

Page 119: ...Relay MR5A411A1K _001 1 Relay MR5A411A1K Inspection of Relay MR5A411A1K Remove the relay The normal measured resistance between relay terminals 1 and 2 is about 75 2 1 5 3 7 6 2 7 1 6 5 3 38jyg3 007...

Page 120: ...N 4 mower proximity and 5 mower proximity switches and controls engine starting and reel cutter rotation with the relay 1 xcqseg 003 Relay CA1aF 12V N 5 _001 1 Relay CA1aF 12V N 5 Inspection of Relay...

Page 121: ...tion of Relay CA1aF 12V N 5 _002 3 Normal operation is when there is conduction between relay terminals 3 and 4 with the battery connected to relay terminals 1 and 2 2 4 3 1 3 4 2 1 38jyg3 016 Inspect...

Page 122: ...relay The normal measured resistance between relay terminals 1 and 2 is about 80 1 3 4 2 5 2 5 4 3 1 38jyg3 011 Inspection of Relay CA1 DC12V N _001 1 2 It is normal that there is conduction between r...

Page 123: ...y_001 1 Terminal relay 1 2 3 Inspection of Terminal Relay Measure the continuity of the terminal relay to determine if it is good or faulty Remove all terminal relay wires Use a circuit tester and che...

Page 124: ...Important This relay has a specific polarity When connecting the battery always connect positive to terminal 8 Check that the continuity is in the following condition when applying battery voltage be...

Page 125: ...multi valve is located next to the driver s seat It is composed of the manual valve interlocked with the mower unit up down lever and the solenoid valve electromagnetic valve interlocked with the ree...

Page 126: ...lower left of the fuel tank 1 bcxrnb 009 Buzzer_001 1 Buzzer intermittent tone Water Temperature Buzzer The water temperature buzzer is a coolant high temperature warning buzzer connected to the wate...

Page 127: ...stance Normal operation is when there is continuity when the float is down and no continuity when the float is up 5 4 3 2 1 bnec97 003 Level Switch_001 1 Float travel distance 2 Coupler 3 Level Switch...

Page 128: ...ning a failure in charging may occur due to malfunction of the alternator drive belt or the IC regulator inside of the alternator etc 1 ir6eja 001 Charge_001 1 Alternator Thermo Start When the ignitio...

Page 129: ...al yellow Water Temperature Gauge The water temperature gauge is connected to the water temperature sensor located on the engine cylinder head the front left side of the main vehicle and indicates the...

Page 130: ...24 and on Every 36 seconds of engine operation will increase the number at the first digit red number on a white background by one Every one hour of engine operation will increase the number at the ne...

Page 131: ...Note Wiring diagram 2 1 4 3 AC 6uy71y 013 Work Lamp_003 1 Light switch 2 Work lamp 3 Positive power source 4 Fuse Electrical System LM531 Electrical System Page 5 47 Electrical components...

Page 132: ...LM531 Electrical System Page 5 48 Electrical components...

Page 133: ...sition of the Piston Pump Page 6 4 Removal and Installation of Each Section Page 6 4 Mower Unit Page 6 4 Inspection and Repair of Each Section Page 6 5 Mower Arm Page 6 5 Mechanical brake manual Page...

Page 134: ...t it and always check the belt for appropriate tension Fan Belt Press the middle of the belt with your finger to check the belt tension The belt tension is appropriate when the belt slacks by approxim...

Page 135: ...immediately If the brake is not sufficiently effective adjust the brake wire 1 2 Important Adjust to reduce the play in the brake lever as much as possible so that the brake does not drag when the le...

Page 136: ...the traction adjusting cam slowly until all wheels stop Find the position where all wheels stop and lock the traction adjusting cam with the lock nut 2 1 hsn2jo 012 Adjusting the Neutral Position of t...

Page 137: ...inder and the bed knife bottom blade are edged tools Handle them carefully since they could cut your hands and feet Important Apply a profuse amount of grease when installing the mower connecting fitt...

Page 138: ...arrier 4 Pad cam 5 Pad support cam 6 Pivot pin 7 Cam for CW 8 Spring lever retainer 9 Mount bracket 10 Corrugated cardboard Only parts 2 3 4 and 5 can be supplied as the pad kit part number YB98 13329...

Page 139: ...oval of Brake Caliper Place a jack beneath the jack up point lift a wheel on one side and place the jack stands to prevent falling Remove the front wheel 1 2 3 4 5 1 2 Remove the cotter pin of slotted...

Page 140: ...lley remover Caution If you remove the wheel mounting base with the slotted nut removed the wheel mounting base and caliper may pop out at you with the pulley remover at the moment when the wheel moun...

Page 141: ...rake Caliper_008 1 Pad cam 2 Pad carrier 9 10 Place the caliper with the side where the disc rotor is to be inserted oriented upward Remove the corrugated cardboard with holding the pad by hands to pr...

Page 142: ...5l8nd 012 Removal of Brake Caliper_012 1 Convex portion of cam 13 14 Installation of Brake Caliper For installing the brake caliper reverse the removing procedure Apply brake grease dry lubricant ligh...

Page 143: ...7 Install the assembled caliper into the disc rotor portion while removing the corrugated cardboard Install both of the front and rear calipers 1 2 2 b8kbof 005 Installation of Brake Caliper_005 1 Whe...

Page 144: ...ts into the hole When the hole fits install the cotter pin into the slotted nut 1 b8kbof 011 Installation of Brake Caliper_008 1 Torque wrench 10 11 Adjust with the adjustment bolt until the pin fits...

Page 145: ...Relating to Engine Page 7 2 Relating to Traveling Page 7 5 Relating to Steering Page 7 6 Relating to Mower Unit Page 7 7 Troubleshooting LM531 Troubleshooting Page 7 1...

Page 146: ...ttery capacity or loose terminals Electrical System General Inspections Repairs Battery Faulty ignition key switch Electrical System Electrical Components Key Switch Faulty starter relay Electrical Sy...

Page 147: ...Clogged air cleaner element This machine s Owner s Operating Manual Insufficient amount of fuel Engine s Owner s Manual Air mixed in fuel system Engine s Owner s Manual Supply fuel and automatically...

Page 148: ...y thermostat Engine Maintenance Manual Faulty thermometer switch Engine Maintenance Manual Charge lamp does not turn off Faulty alternator wire Inspect and repair the wire Faulty alternator Engine Mai...

Page 149: ...on of the piston pump Hydraulic system Measurement Traveling circuit Replace the piston pump Malfunction of the wheel motor Hydraulic system Measurement Traveling circuit Replacement of the wheel moto...

Page 150: ...oil is too cool Warm the engine up Dirt in the hydraulic oil contamination presence of water air Inspection of hydraulic parts Wrong viscosity of hydraulic oil Reference List of Consumables Insufficie...

Page 151: ...omponents Proximity Switch Malfunction of the terminal relay Electrical system Electrical components Terminal relay Malfunction of the reel rotation switch Electrical System Electrical Components Rock...

Page 152: ...LM531 Troubleshooting Page 7 8 Relating to Mower Unit...

Page 153: ...Specifications Page 8 2 Maintenance Schedule Page 8 3 List of Consumables Page 8 8 Reference LM531 Reference Page 8 1...

Page 154: ...il capacity 0 82 U S gal 3 1 dm3 3 1 L Coolant volume 1 59 U S gal 6 0 dm3 6 0 L Hydraulic tank capacity 9 25 U S gal 35 0 dm3 35 0 L Operating width Mowing width 99 2 in 252 cm Operating height Mowin...

Page 155: ...f necessary Remarks 3 Inspection of Engine Oil Level and Dirt 3 Inspection of Fuel Level 3 Inspection of Coolant Level 3 Inspection of Fan Belt Inspection of Amount of Hydraulic Oil Inspection of Hydr...

Page 156: ...arting Engine Cleaning of Radiator Screen Cleaning of Radiator Core External Cleaning of Oil Cooler Core External Cleaning of Machine Exterior Parts Cleaning Around the Engine Greasing and Lubrication...

Page 157: ...ator 3 Adjustment of Fan Belt Tension First time 50 hrs then every 100 hrs after 4 Inspection of Battery Exterior Appearance Inspect after 100 hrs or 1 month whichever is earlier 4 Cleaning of Battery...

Page 158: ...take Line Air Cleaner Hose Inspection of Closed Breather Hose Application of Grease to Mower Unit Hydraulic Motor Shaft 3 Cleaning of Water Separator 3 Replacement of Fuel Filter Cartridge 3 Cleaning...

Page 159: ...Replacement of Traveling Cable Replacement of Brake Pads 1 Refer to the engine workshop manual The items above 2 marked are registered as emission related critical parts by KUBOTA in the U S EPA nonro...

Page 160: ...0038A Seal kit for gear motor MB6AK379 5 Piston pump Y4510463 Overhaul seal kit 1 Orbitrol Y00420011T P NO 406100 seal kit 1 Gear pump Y403 21970 YPD2 series seal kit 1 Front wheel motor YSK000324 Sea...

Page 161: ...Head Office Tel 81 533 84 1390 Fax 81 533 84 1220 1 26 Miyuki cho Toyokawa city Aichi pref 442 8530 JAPAN LM531 SM GBZ 21E 00 S K...

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Kyoeisha Baroness LM531, Service Manual

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