Hyundai Robex 22-7 Скачать руководство пользователя страница 55 | Manualshive

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7-4

7-2 Disassembly and assembly

7-2-1 Replacing the O ring on the contact surface and each block assembly

1. Loosen the nut of tie rod.
2. Remove each block. Be careful not to damage the machine contact surface.
3. When disassembled, it is recommended to replace the O rings on the contact surface.
4. When assembling, clean the contact surface so that no dust sticks to the surface. Then

attach the O ring and reassemble in the reverse order of the above procedure. When
attaching the O ring, give grease to it.

5. Tighten nut temporarily.
6. After tightening, place them on their side. Pressing the inlet cover and end cover from

above, check the level of the mounting legs and tighten the nut.
The tightening torque of the tie rod nut is 2.4kgf-m. While tightening them, check that
the spool of each block operates smoothly.

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Содержание Robex 22-7

Страница 1: ...SERVICE MANUAL SER NO HY2270001...

Страница 2: ......

Страница 3: ...e structure and operation inspection and adjustment disassembly and assembly standard maintenance and repair and re placement of parts of the machine which are necessary to carry out the inspections a...

Страница 4: ......

Страница 5: ...Engine 5 Main Pump 6 Hydraulic Oil Filter 7 Control Valve 8 Joystick 9 Slew Motor 10 Travel Motor 11 Hydraulic Cylinder 12 Swivel Joint 13 Crawler 14 Spring Case and Grease Cylinder 15 Idler 16 Sproc...

Страница 6: ...er match marks are necessary For the electrical system disconnect the cable from the battery terminal 3 Precautions for disassembly In stead of checking all of the disassembled parts at once check eac...

Страница 7: ...TS 2 1 Location of serial No 2 2 Name of each part 2 3 Dimensions and specification 2 4 Weight list 2 5 Oil and grease supply points 2 6 List of supply oil and grease 2 7 When to repair 2 8 Hydraulic...

Страница 8: ...2 1 Location of Serial Number 2 1...

Страница 9: ...st 24 Swing cylinder 25 Operation levers 1 Meter unit 2 Starter switch 3 Horn switch 4 Fuse box 5 Right operation lever 6 Left operation lever 7 Accelerator lever 8 Dozer operation lever 9 Right trave...

Страница 10: ...2 3 Dimensions and Specifications 2 3 465 1405 L80 Swing 1445 280 2250 Height 1150 1380 1325 1745 1795 190275 1 2 5 5 1255 1255 3745 2510 885 1795 2365 4065 3965 4075 2820 8 0 5 0 50 520 455...

Страница 11: ...1 255 Boom swing angle L R deg 80 50 Max digging force Bucket kN 16 3 Max digging force Arm kN 11 2 Max drawbar pull kN 16 2 Travel speed low high km h 2 2 3 8 Slew speed min 1 11 5 Gradeability Angle...

Страница 12: ...ivel joint 11 Pump 15 Pump frange 9 Control valve 23 Tops roof 110 Cabin 230 Part name Boom 70 Arm 40 Bucket 57 Dump link 9 4 Bucket link R 1 7 Bucket link L 2 0 Boom joint pin 2 0 Arm joint pin 1 7 B...

Страница 13: ...y points 2 6 Swing cylinder head pin Bucket link pin Bucket pin Swing post pin Boom joint pin Boom arm joint pin Travel motor Track roller Dozer joint pin Front idler Adjust cylinder Fuel tank Hydraul...

Страница 14: ...capacity Total 1 7 3 5 0 4 5 6 Type of oil according to ambient condition 10 C 40 C 20 C 0 C Soft water antifreeze is mixed in water Diesel fuel with freezing point below 7 C SAE10W 30 SAE 30 ISO VG...

Страница 15: ...intenance 2 8 Prestart up inspection Execute every day before beginning operation Maintenance after the first 25 service hours Execute every 25 hours by the hour meter Maintenance after the first 50 s...

Страница 16: ...aintenance interval hours 7 50 100 250 500 1 000 Replace the engine oil Replace the cartridge Drain water and sediment Clean Replace oil Replace oil Check and clean Check and clean Replace the cartrid...

Страница 17: ...10 1 2 3 Remarks Before starting engine Check that the fuel level is above the center of level gauge Check that the amount of water in sub tank is within a specified level Refer to page 2 6 Refer to t...

Страница 18: ...ess If any bolt or nut is loose retighten according to the table below N m Tightening torque of the bolt and nut Body Material 8 8 10 9 12 9 Size N m N m N m M6 12 5 16 20 M8 30 39 45 M10 62 72 80 M12...

Страница 19: ...diment and water Clean the strainer Clean the fins Inspect and grease Liquid quantity Specific gravity Clean Oil and grease Remove the drain plug on the lower part of the tank Wash strainer with diese...

Страница 20: ...ne After 50 service hours for a new machine After air is vent loosen the drain plug 1 8 2 7 8 Maintenance every 250 service hours Item Fuel filter Engine valve clearance Radiator Air cleaner Hydraulic...

Страница 21: ...rks Clean the inside of the tank Refer to Table of Oil Grease Supply Points For new machine every 500 service hours Remarks 1 8 17 15 2 7 12 Maintenance every 2 000 service hours Table of Oil Grease S...

Страница 22: ...r Left travelling motor Bucket cylinder Boom cylinder Swing cylinder Arm cylinder Pilot filter J S valve R J S valve L P3 P2 P1 Pi7 Pi8 Pi5 Pi6 Pi3 Pi4 Pi2 Pi1 R G PP PL PR PL PR Dozer cylinder Dr B A...

Страница 23: ...8 Travel motor PHV 190 39 1 8003A Item P1 10cm3 rev P2 10cm3 rev P3 6 4cm3 rev P1 18 6MPa 190kgf cm2 P2 18 6MPa 190kgf cm2 P3 17 2MPa 175kgf cm2 Port relief 22 5MPa 230kgf cm2 Slew 11 8MPa 120kgf cm2...

Страница 24: ......

Страница 25: ...ACHMENT CONTENTS 3 1 Standard of maintenance 3 1 1 Attachment 3 2 Inspection and adjustment 3 2 1 Measuring the fall of the attachment of its own weight 3 2 2 Measuring the speed of the attachment cyl...

Страница 26: ...ard of maintenance 3 1 1 Attachment 1 Swing cylinder head 1 4 3 2 5 6 7 8 9 10 12 13 14 11 15 16 17 3 1 2 Swing cylinder rod 3 S w i n g p o s t bracket and swing post 4 Boom joint 5 Boom cylinder hea...

Страница 27: ...nder head 11 Bucket cylinder rod 12 Bucket dump link joint 13 Arm bucket link joint 14 A r m b u c k e t joint 15 Dozer joint 16 Dozer cylinder head 17 Dozer cylinder rod R S L K T U P Q M N O V W X a...

Страница 28: ...h Boom joint pin and swing post Boom cylinder head pin and swing post Boom cylinder rod pin and boom Arm cylinder head pin and boom Arm cylinder rod pin and arm Boom arm joint pin and bush Boom arm jo...

Страница 29: ...n boom and arm Clearance between bucket cylinder head and arm Clearance between bucket cylinder rod and dump link Clearance between dump link and bucket Clearance between arm and bucket link Clearance...

Страница 30: ...Measurement Draw a reference line on the cylinder head with a Magic Marker and measure the length from the line to the cylinder tube Measure the length again 3 minutes later Then record the differenc...

Страница 31: ...2 9 0 5 3 9 2 3 0 5 3 3 1 2 0 3 1 5 0 8 0 3 1 1 6 6 0 5 7 6 6 3 0 5 7 3 3 6 Make bucket teeth touch the ground BOOM Extend cylinder to the Maximum length Retract cylinder to the minimum length ARM Ex...

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Страница 33: ...4 ENGINE CONTENTS 4 1 Specification 4 2 Performance curve 4 3 Location of serial number 4 3 1 Engine 4 3 2 Standard engine speed...

Страница 34: ...m Overall width 450mm Overall height 550 mm Rated output 12 5kW 17ps 2 400 min 1 Maximum torque 55N m 1 600min 1 Maximum idling speed rpm 2 650 min 1 Minimum idling speed rpm 1 100 min 1 30 Fuel consu...

Страница 35: ...4 60 50 40 12 16 20 24 200 280 270 260 190 Nm kgf m PS kW Brake horse power 6 8 10 12 14 16 18 20 Output torque g kW h g PS h Engine speed min 1 102 55 0 N m 1 600 100min 1 12 5kW 2 400min 1 280g kW...

Страница 36: ...ial number 4 3 1 Engine 4 3 2 Standard engine speed at new machine delivery 4 3 Conditions Idling speed Maximum idling speed 2 550 min 1 Speed when 1P relief is used 2 450 min 1 Engine No identificati...

Страница 37: ...5 2 Structure 5 3 Removing and installing the pump 5 3 1 Removing the pump 5 3 2 Installing the pump 5 4 Performance test of the hydraulic pump 5 4 1 Measuring instrument 5 4 2 Preparation 5 4 3 Conne...

Страница 38: ...2 PF3 8 P3 PF3 8 L1 221mm L2 134mm L3 201 5mm L4 88mm L5 45mm L6 24mm P1 10mm Displacement rev P2 10mm P3 6 4mm Rated pressure P1 18 6MPa 190kgf cm2 P2 18 6MPa 190kgf cm2 P3 17 2MPa 175kgf cm2 Directi...

Страница 39: ...iner 34 Seal washer 7 Shoe 21 Stopper pin 35 Plug 8 Shoe holder 22 Pin 36 Gear pump 9 Barel holder 23 Bearing 37 Coupling 10 Swash plate 24 Bearing 38 Collar 11 Needle 25 Oil seal 39 O ring 12 Pin 26...

Страница 40: ...difficult insert a screwdriver and remove the pump little by little with equal force applied on the right and left sides 5 3 2 Installing the pump 1 Replace with a new pump and install it on the pump...

Страница 41: ...op engine 5 4 3 Connecting tester 1 Remove the hose on the pump port of the control valve 2 Connect the removed hose to the outlet of the tester 3 Connect the hose on the discharge of the pump to the...

Страница 42: ...5 5 Throttle valve Hydraulic pressure tester OUT IN OPEN CLOSE...

Страница 43: ...to indicate a pressure value on P Q characteristic curve P1 P2 175 10 2 2 100 0 10 P_Q characteristics curve 37 2 P3 17 2MPa 175kgf cm2 P3 0 98MPa 10kgf cm2 Rated pressure P1 P2 MPa P1 P2 P1 P2 18 6MP...

Страница 44: ......

Страница 45: ...6 1 Installation 6 2 Hydraulic oil filter 6 2 1 Line filter 6 2 2 Suction filter 6 2 3 Pilot filter 6 3 Maintenance procedure 6 3 1 Replacing the line filter 6 3 2 Replacing the suction filter 6 3 3...

Страница 46: ...6 1 Installation 6 1 J S Left J S J S Right J S...

Страница 47: ...filter SP08 Grain size 150 mesh Oil temperature 20 C 120 C 2 PT1 Tightening torque 19 6Nm 2kgf m Filtration accuracy 10 Filtration capacity 50 min Max 0 15MPa 1 5kgf cm2 Proof pressure 0 69MPa 7kgf cm...

Страница 48: ...Pilot filter 6 3 Filtration capacity 2 min Max Proof pressure 3 92MPa 40kgf cm2 Filtration accuracy 31 Filtration area 5 cm2 Oil temperature 30 C 120 C PT 1 4 PT 1 4 Tightening torque 58 8 78 5N m 6 8...

Страница 49: ...ine 2 Remove the pilot filter 6 2 3 with a wrench 27 mm width 3 Remove the filter to check whether the net of the element is damaged Replace with a new one if the net is damaged or the mesh is widened...

Страница 50: ......

Страница 51: ...bly 7 2 2 Replacing the O ring on the spool 7 2 3 Removing the load check valve and replacing the O ring 7 2 4 Replacing the relief valve assembly and the O ring 7 3 Structure of the relief valve 7 3...

Страница 52: ...min Port Port size T1 T2 G 1 2 A1 A9 B1 B9 P1 P3 G 3 8 Pa1 Pa2 Pa7 Pa9 P P G 1 4 Pb1 Pb2 Pb7 Pb9 Dr P1 T1 P2 Pb1 B1 A1 B2 A2 Pa1 Pa2 Pb2 B3 A3 B4 A4 Bucket Boom P T O Right travelling Left travelling...

Страница 53: ...Block assembly 21 Nut 9 Block assembly 22 Relief valve assembly 10 Block assembly 23 Relief valve assenbly 11 Block assembly 24 Relief valve assembly 12 Block assembly 25 Relief valve assembly 13 Bloc...

Страница 54: ...7 Socket head bolt 21 Spring 8 Spring seat 22 Spring sea 9 Spring 23 Spur end 10 Spring seat 24 O ring 11 Poppet 25 Cap 12 Spring 26 Socket head bolt 13 Spacer 27 34 Spool 14 Spool end 1 2 27 28 29 30...

Страница 55: ...embling clean the contact surface so that no dust sticks to the surface Then attach the O ring and reassemble in the reverse order of the above procedure When attaching the O ring give grease to it 5...

Страница 56: ...d check valve from the valve block 2 Keep each load check valve in order so as not to confuse it with other valve block 2 Clean the parts sufficiently before assembling them 7 2 4 Replacing the relief...

Страница 57: ...Cap 7 Spring 13 Backup ring 2 Plug 8 Pilot spring 14 O ring 3 Poppet 9 Adjuster kit 15 O ring 4 Poppet 10 O ring 16 Wave washer 5 Piston 11 Backup ring 17 Name plate 6 Pilot poppet 12 O ring 18 O rin...

Страница 58: ...be higher than the NAS12 class 2 Keep the oil temperature between 20 C and 80 C If the temperature falls below 0 C warm up the machine 3 Never raise the set pressure of the main relief valve and port...

Страница 59: ...8 JOYSTICK PILOT VALVE CONTENTS 8 1 Specification 8 2 Structure...

Страница 60: ...3 5 1 0 1 34 1 78 2 0 2 14 2 52 3 0 3 02 3 5 Secondary Pressure kgf cm 2 Secondary Pressure MPa Operating Torque Nm Operating Torque kgf cm Push rod Stroke mm Operating Angle 35 7 30 8 30 6 25 7 21 8...

Страница 61: ...Seal 23 Lever 4 Seal washer 14 O ring 24 Knob 5 O ring 15 Spring seat 25 Spring pin 6 Hex bolt 16 Washer 2 26 Bush 7 Spring pin 17 Spring 27 Connector 8 Bush 18 Spring 28 Housing 4P 9 Plate 19 Joint...

Страница 62: ...2 Structure 9 3 Standard of maintenance 9 3 1 Slew bearing slew case 9 4 Inspection and adjustment 9 4 1 Measuring the natural slew distance 9 4 2 Measuring the over slew distance after stopping 9 4...

Страница 63: ...unterclockwise B A Port Port size A G 3 8 O ring Port B G 3 8 O ring Port T G 3 8 O ring Port Initial oil replace 500Hr 1 000Hr Second and later replace 9 1 Type 2 160DOS E3768 Output torque 296 Nm 30...

Страница 64: ...ew motor Ass y 2 Seal Kit 3 X ring 4 O ring 5 Seal shaft face 6 O ring 7 O ring 8 Seal inner face 9 Seal outer face 10 O ring 11 O ring 12 O ring 13 O ring 14 Relief valve Assy 9 8 11 13 14 view A A 1...

Страница 65: ...9 3 Standard of maintenance 9 3 1 Slew bearing and slew case 9 3 M10 60 P 1 5 12 9 Tightening torque 80Nm M12 40 P 1 75 12 9 Tightening torque 130Nm M12 30 P 1 75 12 9 Tightening torque 130Nm...

Страница 66: ...ar length Unit mm or less Standard value Allowance Weight W kg 100 200 108 9 4 2 Measuring the over slew distance after stopping Maintain the oil temperature at 50 5 C while the engine is running at f...

Страница 67: ......

Страница 68: ...10 TRAVEL MOTOR CONTENTS 10 1 Specification 10 2 Structure 10 3 Operation 10 4 Handling the travel motor 10 5 Measuring travel motor idling and travelling time 10 6 Inspection and adjustment...

Страница 69: ...7 9 327 6 Output speed min 1 36 3 69 6 Oil ISO VG46 Reduction ratio 1 39 Oil temperature C 20 100 Capacity cm3 rev 16 1 8 4 Filtering M 10 Working pressure MPa 18 6 190kgf cm2 Engine oil equivalent Ou...

Страница 70: ...eal 68 Snap ring 15 Plug 42 Ball 69 Snap ring 16 Pulg 43 Snap ring 70 Snap ring 17 O ring 44 Screw 71 Snap ring 18 O ring 45 Spring pin 72 Spring pin 19 O ring 46 Pin 73 O ring 20 Choke 47 Plug 74 O r...

Страница 71: ...oil quantity check port with an Allen wrench 3 Add lubricating oil through the oil intake until the oil comes out of oil quantity check port 4 Plug the oil intake oil drain and oil quantity check por...

Страница 72: ...After travelling 3m on ground level measure the required time to travel 20m Standard value Low 19 2 High 33 2 Engine running at full speed and oil temperature of 50 5 C 10 5 Inspection and adjustment...

Страница 73: ......

Страница 74: ...ENTS 11 1 Structure 11 2 Disassembly and assembly 11 2 1 Disassembly procedure 11 2 2 Procedure for disassembling inner parts 11 3 Assembly 11 3 1 Assembly procedure 11 3 2 Inspection procedure 11 3 3...

Страница 75: ...Cylinder bore mm 65 60 70 Maximum extended length mm Maximum contracted length mm F Stroke mm 450 500 400 425 100 Clevis width mm 45 H Tightening torque N m kgf m 294 30 0 284 29 0 304 31 0 I tighteni...

Страница 76: ...Backup ring 10 O ring 11 Piston 12 Slide ring 13 Seal ring Ass y 14 Steel ball 15 Set screw 16 Pin bush 17 Dust seal 18 Cylinder head Ass y 19 Piston Ass y 20 Rod packing Ass y 21 Piston packing Ass...

Страница 77: ...emove the piston pull the piston rod about a third of the length 2 Loosen and remove the cylinder head from the cylinder tube assembly with a hook wrench 3 Disassembling the piston rod assembly Slowly...

Страница 78: ...cover assembly on the workbench and move the rod cover to and fro to remove it Remove the backup ring then the O ring with a screwdriver If they are to be reused be careful not to damage them 3 Disas...

Страница 79: ...heck all parts for flaws cracks deformation rust or burrs which may affect the operation Inside of the tube rod etc 2 Check each part for metallic powder or other foreign matter sticking to it 3 Check...

Страница 80: ...12 SWIVEL JOINT CONTENTS 12 1 Specification and Structure 12 2 Structure disassembly and assembly...

Страница 81: ...Travelling rightward B D F port Control valve Dozer Dozer cylinder Dozer cylinder Over drive Rightward travelling motor Leftward travelling motor Rightward travelling motor Leftward travelling motor...

Страница 82: ...ring does not become trapped Assembly 1 Before assembly check the O ring and sliding part for flaws and other defects 2 Assembly is usually executed in the opposite order of disassembly Coat a little...

Страница 83: ......

Страница 84: ...er Steel 13 1 2 Track frame 13 2 Standard of maintenance 13 2 1 Crawler Steel 13 3 Disassembly and assembly 13 3 1 Installing the crawler 13 3 2 Removing the crawler 13 3 3 Track frame spring 13 3 4 L...

Страница 85: ...1 2 13 1 Structure and operation 13 1 1Crawler steel 1 Shoe 2 Pin 13 1 2Track frame 1 Idler 2 Track frame 3 Track roller 4 Spring 230 13 1 4 1 2 3 90...

Страница 86: ...4 43 7 2 21 Item Link pitch Link height Grouser height Pin clearance Bush outer diameter No 1 2 3 4 5 Remarks Measure by stretching 5 links except for the master link Pad or replace Pad or replace Rep...

Страница 87: ...e idler and for steel crawler fix the master pin 3 into the hole For a rubber crawler the crawler by using the idler as it is Install steel bar and heavy duty hammer into the undercarriage 2 Tension t...

Страница 88: ...achment and put blocks under to lift the machine 2 Turning in the direction of the idler side remove crawler master pin 3 and then the crawler 2 from track frame Weight steel crawler 148 kg 74 2 3 As...

Страница 89: ...value 2 1 Track frame 52 2 2 Idler frame 50 3 1 Track frame 152 3 2 Idler support 150 Standard value 274 Set length 207 Unit mm Remedy Correct Pad or replace Replace Replace Item Deformation of frame...

Страница 90: ...edges protruding on the ground 3 Avoid using on beach This may affect the adhesion of the core metal 4 If the machine is going to be stored for a long time never store it where it will be directly ex...

Страница 91: ...ring the rubber crawler Foreign matter will strain the crawler and cut it 3 No sharp turns Do not turn sharply on a road with a high friction factor such as a concrete road 4 Keep oil products away fr...

Страница 92: ...E AND GREASE CYLINDER CONTENTS 14 1 Structure 14 2 Specification of spring 14 3 Disassembly and assembly 14 3 1 Howtodisassembleandassembletheadjust cylinder 14 3 2 How to disassemble and assemble the...

Страница 93: ...n of spring Name Value Name Value No of active coils 8 5 Length at max shrinkage mm 140 Total number of coils 10 5 O D outer diameter mm 80 Spring constant N mm 288 P C D Center diameter mm 64 Set for...

Страница 94: ...re a Attach the O ring backup ring and spacer to adjust cylinder tube Coat grease on the O ring and dust seal before assembly b Attach the adjust cylinder rod to adjust the cylinder tube carefully so...

Страница 95: ...mounting spring b Remove the spring from adjust cylinder tube Note Be careful when using the tool when removing the spring Also be careful during assembly 2 Assembly The assembly procedure is the rev...

Страница 96: ...15 IDLER CONTENTS 15 1 Standard of maintenance 15 1 1 Idler...

Страница 97: ...1Idler 15 1 No Item Unit Allowance Remarks 1 Width of idler teeth mm 22 16 Pad or replace 2 Minor diameter mm 253 241 Pad or replace 3 Number of teeth 19 4 Quality of lubricating oil cm3 40 Engine oi...

Страница 98: ...16 SPROCKET CONTENTS 16 1 Disassembly and assembly 16 1 1 Removing the sprocket 16 1 2 Installing the sprocket 16 2 Standard of maintenance 16 2 1 Sprocket...

Страница 99: ...procket Remove sprocket mounting bolts 1 and then sprocket 2 from the travelling motor assembly 16 1 2Installing the sprocket 1 Sprocket Attach the sprocket to travelling motor assembly and tighten th...

Страница 100: ...Unit Allowance Remarks 1 Width of sprocket teeth mm 22 16 Pad or replace 2 Minor diameter of sprocket mm 253 241 Pad or replace 3 4 Tightening torque of sprocket mounting bolt M10 P1 5 Tightening tor...

Страница 101: ......

Страница 102: ...17 TRACK ROLLER CONTENTS 17 1 Standard of maintenance 17 1 1 Track roller...

Страница 103: ...or replace 2 Outer diameter of tread mm 86 83 Pad or replace 3 Width of projected part mm 22 19 Pad or replace 4 Overall width mm 99 Pad or replace 5 Width of tread mm 28 Pad or replace 6 Tightening...

Страница 104: ...18 ELECTRICAL EQUIPMENT CONTENTS 18 1 Structure and function 18 1 1 Electric circuit diagram 18 2 Failure and remedy 18 2 1 Starter system 18 2 2 Alternator system...

Страница 105: ...E M E M L H 1 25R 1 25R 0 85LW 0 85L 0 85WL 0 85RL 0 5LB 0 5LB 0 5WB 0 5YG 0 5GW 0 5LW 0 5GR 0 5LY 0 5YG 0 5YR 0 5B 0 85B 0 85W 0 85WL 0 85RY 0 85Or G OPTION LIGHT SRM 12CS OPTION REV LIGHT SRM 12CS...

Страница 106: ...st Replace Replace Replace switch Replace Disconnection of the wire harness loose connection of the battery or switch terminal Spline which engaged with the pinion of armature shaft is caught and the...

Страница 107: ...er contact or insufficient movement of brush and slip ring Short circuit of coil Defective diode Defective alternator Wrong installation Defective fan belt Defective bearing Diodes on and sides broke...

Страница 108: ...9 3 Slewing system 19 3 1 No operation both right left slewing 19 3 2 It is possible to turn right left but not left right 19 3 3 Turning acceleration slow the overturn is highter than tolerance 19 3...

Страница 109: ...HYD oil Clean up suction filter Repair faulty piping part Check cause of bubbles and remove it Replace pump Ass y Replace HYD oil Adjust to correct pressure Clean disassemble adjust or replace Ass y...

Страница 110: ...weak then replace Clean or replace Clean or replace Clean or replace control valve Fuse has blown Check the pressure on pump No 3 Check control valve and inner parts of pilot system Blocked up with co...

Страница 111: ...ve is faulty Check plunger repair or replace Ass y Faulty relief valve Pump was faulty Check the counter balance valve Drive motor broken Adjustment or replace Replace seals or block Ass y Internal le...

Страница 112: ...age Faulty action on spool Faulty pump Faulty relief valve Internal leak on swivel joint Check the counter balance valve Internal wear or breakage OK Remove any foreign matter and re adjust to correct...

Страница 113: ...can see any movement outside tolerance Replace counter balance valve brake valve Replace drive motor Faulty counter balance valve Faulty drive motor Replace counter balance valve Replace drive motor A...

Страница 114: ...tc Replace pinion gear or turning bearing Replace turning bearing Disassemble repair or replace turning motor Ass y Faulty pump Faulty control valve Spool is sticking Faulty turning relief valve Repla...

Страница 115: ...lief valve OK Clean or replace Replace turning motor Ass y Above tolerance Low pressure OK Yes Change over control valve pilot port A B then test Faulty control valve block Faulty joystick Faulty reli...

Страница 116: ...ce then test Check the turning circuit pressure Internal leak on turning motor Faulty relief valve Faulty relief valve Disassemble clean or replace Faulty control valve Change over outlet hoses to pum...

Страница 117: ...assmble clean or replace Change over outlet hoses from the other pump then test Faulty pump Faulty control valve Disassemble replace seals or replace Replace inner parts or Ass y Does move Does not mo...

Страница 118: ...r Ass y OK OK Adjust to correct pressure or replace relief valve Replace inner parts or Ass y Adjust to correct pressure or replace relief valve Disassemble replace seals or replace pump Ass y Replace...

Страница 119: ...then check Internal leak on boom cylinder OK Replace inner parts or cylinder Ass y Yes No Faulty Check the internal leak on control valve Change over hoses boom section A boom section B Faulty port re...

Страница 120: ...ction valve Clean or replace Replace or change over the relief valve with the other pump s port and then test Change over the outlet hoses No 2 3 pumps and then test Yes Faulty No Faulty control valve...

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