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KOMATSU WB142-5 BACKHOE LOADER SERVICE REPAIR MANUAL – PDF DOWNLOAD
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- KOMATSU WB142-5 BACKHOE LOADER SERVICE REPAIR MANUAL
- SERIAL NUMBERS:A13001 and UP
- PUBLICATION NUMBER:CEBM018903
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Description
KOMATSU WB142-5 BACKHOE LOADER SERVICE REPAIR MANUAL
KOMATSU WB142-5 BACKHOE LOADER SERVICE REPAIR MANUAL – PDF DOWNLOAD:
SCREENSHOTS OF THE MANUAL:
SAMPLE PAGE FROM THE MANUAL:
KOMATSU WB142-5 BACKHOE LOADER SERVICE REPAIR MANUAL
1. Be careful of the operating environment. Avoid adding hydraulic oil, replacing filters, or repairing the machine in rain or high winds, or places where there is a lot of dust.
2. Disassembly and maintenance work in the field. If disassembly or maintenance work is carried out on hydraulic equipment in the field, there is danger of dust entering the equipment. It is also difficult to confirm the performance after repairs, so it is desirable to use unit exchange. Disassembly and maintenance of hydraulic equipment should be carried out in a specially prepared dust proof workshop, and the performance should be confirmed with special test equipment.
3. Seal or cover all openings of disconnected piping. After any piping or equipment is removed, the openings should be sealed with caps, tape, or vinyl bags to prevent any dirt or dust from entering. Never leave any openings opened or blocked with a rag, this could cause particles or dirt to get into the system. Drain all oil into a container and not unto the ground and be sure to follow the proper environmental regulation for any disposal of oil.
4. Do not let any dirt, or dust get in during refilling operations. Be careful not to let any dirt or dust get in when refilling with hydraulic oil. Always keep the oil filler and the area around it clean, and also use clean pumps and oil containers. If an oil cleaning device is used, it is possible to filter out the dirt that has collected during storage, so this is an even more effective method.
5. Change hydraulic oil when the temperature is high. When hydraulic oil or other oil is warm, it flows easily. In addition, the sludge can also be drained out easily from the circuit together with the oil, so it is best to change the oil when it is still warm. When changing the oil, as much as possible of the old hydraulic oil must be drained out. (Do not drain the oil from the hydraulic tank; but drain the oil from the filter and from the drain plug in the circuit.) If any old oil is left, the contaminants and sludge in it will mix with the new oil and will shorten the life of the hydraulic oil.
6. Flushing operations. After disassembling and assembling the equipment, or changing the oil, use flushing oil to remove the contaminants, sludge, and old oil from the hydraulic circuit. Normally, flushing is carried out twice: primary flushing is carried out with flushing oil, and secondary flushing is carried out with the specified hydraulic oil.
7. Cleaning operations. After repairing the hydraulic equipment (pump, control valve, etc.) or when running the machine, carry out oil cleaning to remove the sludge or contaminants in the hydraulic oil circuit. The oil cleaning equipment is used to remove the ultra fine (about 3μ) particles that the filter built into the hydraulic equipment cannot remove, so it is an extremely effective device.
TABLE OF CONTENTS:
KOMATSU WB142-5 BACKHOE LOADER SERVICE REPAIR MANUAL
COVER................................................................................ 1 CONTENTS............................................................................. 2 FOREWORD............................................................................. 3 SAFETY........................................................................... 9 SAFETY NOTICE................................................................ 9 IMPORTANT SAFETY NOTICE.................................................. 9 GENERAL PRECAUTIONS...................................................... 9 PREPARATIONS FOR WORK.................................................... 9 PRECAUTIONS DURING WORK.................................................. 9 GENERAL.......................................................................... 11 HOW TO READ THE SHOP MANUAL...................................................... 12 VOLUMES...................................................................... 12 DISTRIBUTION AND UPDATING.................................................... 12 FILING METHOD................................................................ 12 REVISED EDITION MARK......................................................... 12 REVISIONS.................................................................... 12 SYMBOLS...................................................................... 12 HOISTING INSTRUCTIONS............................................................ 13 HOISTING..................................................................... 13 WIRE ROPES................................................................... 13 EXPLANATION OF TERMS FOR MAINTENANCE STANDARD.................................... 14 COATING MATERIALS................................................................ 16 STANDARD TIGHTENING TORQUE....................................................... 18 STANDARD TIGHTENING TORQUE OF BOLTS AND NUTS................................. 18 TIGHTENING TORQUE OF HOSE NUTS............................................... 19 TIGHTENING TORQUE OF SPLIT FLANGE BOLTS...................................... 19 TIGHTENING TORQUE FOR FLARED NUTS............................................ 19 CONNECTING PUSH-PULL TYPE COUPLER................................................ 22 CONVERSION TABLES................................................................ 25 METHOD OF USING THE CONVERSION TABLE......................................... 25 01 GENERAL........................................................................... 31 SPECIFICATION DRAWING............................................................ 32 SPECIFICATIONS............................................................... 0 MACHINE DIMENSIONS AND WEIGHTS........................................... 0 BACKHOE ARM.................................................................. 0 MACHINE SYSTEMS SPECIFICATIONS................................................... 32 BACKHOE ARM.................................................................. 33 ENGINE....................................................................... 34 ELECTRICAL SYSTEM............................................................ 34 SERVICE REFILL CAPACITIES.................................................... 34 TRANSMISSION................................................................. 35 TOTAL MASS................................................................... 35 STANDARD BUCKET CAPACITY..................................................... 35 LOADER....................................................................... 35 TIRE PRESSURE................................................................ 35 WEIGHT TABLE..................................................................... 36 FUEL, COOLANT, AND LUBRICANTS.................................................... 37 PROPER SELECTION ACCORDING TO THE AMBIENT TEMPERATURE........................ 37 GREASE....................................................................... 38 FUEL AND ENGINE OIL REMARKS.................................................. 38 HOMOLOGATED (HEES) SYNTHETIC LUBRICANTS.......................................... 39 LUBRICATION DIAGRAMS............................................................. 40 GENERAL VIEW................................................................. 40 10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD...................................... 41 POWER TRAIN...................................................................... 43 SYSTEM OVERVIEW.............................................................. 43 DESCRIPTION.............................................................. 43 4 WHEEL DRIVE SYSTEM......................................................... 44 TRANSMISSION COMPONENTS...................................................... 45 CONVERTER AND TRANSMISSION CIRCUIT DIAGRAM................................... 46 TRANSMISSION..................................................................... 47 CASE......................................................................... 47 TRANSMISSION INTERNAL VIEW................................................... 48 GEAR SHIFTER AND FILTERING SYSTEM............................................ 49 CLUTCH PACKS AND DRIVEN GEAR SET............................................. 50 CLUTCH PACK.............................................................. 50 DRIVEN GEAR SET.......................................................... 50 4 WHEEL DRIVE SHAFT.......................................................... 51 CONTROL VALVE BLOCK.......................................................... 53 TRANSMISSION CASE SPECIFICATIONS............................................. 54 TORQUE VALUES............................................................ 54 INTERNAL SPECIFICATIONS...................................................... 55 GEAR SHIFTER AND COMPONENTS SPECIFICATIONS................................... 56 TORQUE VALUES............................................................ 57 FRONT AXLE ASSEMBLY.............................................................. 58 DIFFERENTIAL................................................................. 58 FINAL DRIVE END.............................................................. 59 STEERING CYLINDER............................................................ 60 AXLE CARRIER SPECIFICATIONS.................................................. 61 TORQUE VALUES............................................................ 61 TORQUE VALUES............................................................ 62 AXLE END SPECIFICATIONS...................................................... 63 TORQUE VALUES............................................................ 63 STEERING UNIT CYLINDER SPECIFICATIONS........................................ 64 TORQUE VALUES............................................................ 64 REAR AXLE ASSEMBLY............................................................... 65 DIFFERENTIAL................................................................. 65 AXLE END..................................................................... 66 AXLE CARRIER SPECIFICATIONS.................................................. 68 TORQUE VALUES............................................................ 69 AXLE END SPECIFICATIONS...................................................... 70 TORQUE VALUES............................................................ 70 REAR BRAKES...................................................................... 71 BRAKE SPECIFICATIONS......................................................... 72 TORQUE VALUES............................................................ 72 DIFFERENTIAL LOCK................................................................ 73 LOCK SPECIFICATIONS.......................................................... 74 TORQUE VALUES............................................................ 74 HYDRAULIC SYSTEM................................................................. 75 HYDRAULIC CIRCUIT DIAGRAM.................................................... 75 HYDRAULIC PUMP............................................................... 76 DESCRIPTION.............................................................. 77 OPERATION................................................................ 77 LOADER 3 - SPOOL VALVE....................................................... 78 (WITH FLOAT AND RETURN TO DIG)........................................... 78 LOADER SPOOL VIEW............................................................ 79 BACKHOE CONTROL VALVE........................................................ 80 (8 - SPOOL VALVE)........................................................ 80 BACKHOE SPOOL VIEW........................................................... 81 SOLENOID VALVE................................................................... 84 (ST1 VALVE LOCK - DIFFERENTIAL LOCK - BACKHOE BOOM LOCK)..................... 84 MASTER CYLINDER (BRAKES)......................................................... 85 SPECIFICATIONS............................................................... 85 LOADER CYLINDERS................................................................. 86 ARM CYLINDERS................................................................ 86 BUCKET CYLINDER.............................................................. 86 SPECIFICATIONS........................................................... 86 ARM CYLINDER TOLERANCE....................................................... 87 BUCKET CYLINDER TOLERANCE.................................................... 87 TORQUE VALUES............................................................ 87 BACKHOE CYLINDERS................................................................ 88 BOOM cylinder................................................................ 88 ARM cylinder................................................................. 88 BUCKET SPECIFICATIONS........................................................ 89 OUTRIGGER SPECIFICATIONS..................................................... 89 BOOM SWING SPECIFICATIONS.................................................... 90 SPECIFICATIONS........................................................... 90 BOOM CYLINDER TOLERANCE...................................................... 93 ARM CYLINDER TOLERANCE....................................................... 93 BUCKET CYLINDER TOLERANCE.................................................... 93 BOOM SWING CYLINDER TOLERANCE................................................ 94 TORQUE VALUES............................................................ 94 OUTRIGGERS TOLERANCE......................................................... 0 TORQUE VALUES............................................................ 0 PIN AND BUSHING CLEARANCES....................................................... 96 LOADER WORK EQUIPMENT........................................................ 96 BACKHOE WORK EQUIPMENT....................................................... 99 20 STANDARD VALUE TABLES.............................................................105 STANDARD VALUE TABLE FOR ENGINE..................................................106 STANDARD VALUE TABLE FOR CHASSIS.................................................107 30 TESTING AND ADJUSTING.............................................................115 BLEED AIR FROM CIRCUITS..........................................................117 BLEED AIR FROM BRAKING CIRCUIT...............................................117 RELEASING RESIDUAL PRESSURE..................................................117 ACCELERATOR PEDAL AND THROTTLE LEVER.............................................118 ACCELERATOR PEDAL TRAVEL.....................................................118 THROTTLE LEVER TRAVEL........................................................119 BRAKE SYSTEM.....................................................................120 CONTROL......................................................................120 ADJUSTMENT...................................................................120 CHECKS.......................................................................121 LEAKAGE CHECKS...........................................................121 INDIVIDUAL PUMP CHECK....................................................122 BRAKE ASSEMBLY LEAKAGE...................................................123 PARKING BRAKE ADJUSTMENT.........................................................124 HYDRAULIC CIRCUIT................................................................125 INTRODUCTION.................................................................125 3-SPOOL VALVE............................................................126 7-SPOOL VALVE............................................................126 MAIN RELIEF VALVE............................................................127 SETTING (PRESSURE CUT-OFF)...............................................127 PUMP P2 PRESSURE RELIEF VALVE CALIBRATION................................127 SECONDARY VALVES SETTING.................................................128 Calibration Values For 3-element Control Valve Secondary Valves..........129 Calibration Values For 7 and 8-element Control Valve Secondary Valves....129 SETTING THE MAIN RELIEF AND REDUCING VALVES..............................130 SECONDARY VALVES AND P2 PUMP RELIEF VALVE................................131 CHECKING LOAD SENSING SIGNAL (LS VALVE)......................................132 UNLOADING VALVE CALIBRATION..............................................132 CHECKING COMPENSATED FLOW VALVE..............................................133 OPERATION OF THE PRIORITY VALVE..............................................134 TESTING AND SETTING STEERING SYSTEM PRESSURE.................................135 CONTROL..................................................................135 SETTING..................................................................135 CHECKING FOR LEAKS IN THE STEERING CYLINDERS.................................136 POWER TRAIN......................................................................137 CONVERTER OIL PRESSURE.......................................................137 CLUTCH ENGAGEMENT PRESSURE...................................................137 CLUTCH FUNCTION..............................................................139 MACHINE PREPARATION......................................................139 CONTROL..................................................................139 HYDRAULIC DRIFT..................................................................140 LOADER.......................................................................140 BOOM CIRCUIT.............................................................140 BUCKET CIRCUIT...........................................................141 BACKHOE..................................................................142 BOOM CIRCUIT.............................................................142 ARM CIRCUIT..............................................................142 BUCKET CIRCUIT...........................................................143 OUTRIGGERS TESTING.......................................................144 40 TROUBLESHOOTING...................................................................145 POINTS TO REMEMBER WHEN TROUBLESHOOTING..........................................146 SEQUENCE OF EVENTS IN TROUBLESHOOTING............................................148 PRECAUTIONS WHEN CARRYING OUT MAINTENANCE........................................149 PRECAUTIONS WHEN HANDLING ELECTRICAL EQUIPMENT...............................149 HANDLING ELECTRONIC CONTROL UNIT.............................................154 POINTS TO REMEMBER WHEN TROUBLESHOOTING ELECTRICAL CIRCUITS..................155 HOW TO READ ELECTRIC WIRE CODE...............................................156 CLASSIFICATION BY COLOR AND CODE.............................................158 POINTS TO REMEMBER WHEN LHANDLING HUYDRAULIC EQUIPMENT.......................159 CHECKS BEFORE TROUBLESHOOTING....................................................161 TROUBLESHOOTING GUIDE............................................................162 FRONT AXLE...................................................................162 REAR AXLE....................................................................167 TRANSMISSION.................................................................172 50 DISASSEMBLY AND ASSEMBLY..........................................................175 HOW TO USE THIS MANUAL...........................................................180 REMOVAL AND INSTALLATION OF COMPONENTS....................................... 0 REMOVAL.................................................................. 0 INSTALLATION............................................................. 0 OVERHAUL OF COMPONENTS....................................................... 0 DISASSEMBLY PROCEDURES................................................... 0 ASSEMBLY PROCEDURES...................................................... 0 PRECAUTIONS WHEN CARRYING OUT AN OPERATION.......................................182 SPECIAL TOOL LIST................................................................184 CONNECTOR REPAIR PROCEDURES......................................................186 CONTACT TERMINAL REMOVAL (HD30 TYPE)......................................... 0 CRIMPING CONTACT TERMINAL (HD30 TYPE)........................................187 INSERTION OF CONTACT TERMINAL (HD30 TYPE)....................................188 CONTACT TERMINAL REMOVAL (DT TYPE)...........................................189 CRIMPING CONTACT TERMINAL (DT TYPE)..........................................190 INSERTION OF CONTACT TERMINAL (DT TYPE)......................................191 STRIPPING INSULATION.........................................................192 ENGINE HOOD......................................................................193 REMOVAL......................................................................193 INSTALLATION.................................................................194 FRONT GUARD......................................................................195 REMOVAL......................................................................195 INSTALLATION.................................................................195 RADIATOR.........................................................................196 REMOVAL......................................................................196 INSTALLATION.................................................................199 MUFFLER..........................................................................200 REMOVAL......................................................................200 INSTALLATION.................................................................202 AIR FILTER.......................................................................203 REMOVAL......................................................................203 INSTALLATION.................................................................203 EXHAUST STACK....................................................................204 REMOVAL......................................................................204 INSTALLATION.................................................................205 OPERATORS SEAT...................................................................206 REMOVAL......................................................................206 INSTALLATION.................................................................206 SIDE PANEL AND INSTRUMENT GROUP..................................................207 LOWER ELECTRICAL GROUP.......................................................207 REMOVAL..................................................................207 INSTALLATION.............................................................208 DASH BEZEL AND COVER.........................................................209 REMOVAL..................................................................209 INSTALLATION.............................................................211 BATTERY..........................................................................212 REMOVAL......................................................................212 INSTALLATION.................................................................213 FUEL TANK........................................................................214 REMOVAL......................................................................214 INSTALLATION.................................................................215 STEERING AND FRONT DASH ASSEMBLY.................................................216 STEERING WHEEL...............................................................216 REMOVAL..................................................................216 INSTALLATION.............................................................217 FRONT DASH ASSEMBLY..........................................................218 REMOVAL..................................................................218 INSTALLATION.............................................................219 STEERING UNIT................................................................220 REMOVAL..................................................................220 INSTALLATION.............................................................221 BRAKE SYSTEM.................................................................222 REMOVAL..................................................................222 INSTALLATION.............................................................224 BLEED AIR FROM BRAKING CIRCUIT...............................................225 STEERING UNIT................................................................226 REMOVAL..................................................................226 INSTALLATION.............................................................227 CANOPY...........................................................................228 REMOVAL......................................................................228 INSTALLATION.................................................................235 HYDRAULIC OIL TANK...............................................................236 REMOVAL......................................................................236 INSTALLATION.................................................................241 HYDRAULIC PUMP...................................................................242 REMOVAL......................................................................242 INSTALLATION.................................................................243 TRANSMISSION.....................................................................244 REMOVAL......................................................................244 INSTALLATION.................................................................248 TRANSMISSION OVERHAUL PROCEDURES.................................................249 TORQUE CONVERTER.............................................................249 REMOVAL..................................................................249 INSTALLATION.............................................................249 PLUGS AND FILTERS............................................................250 DISASSEMBLY..............................................................250 ASSEMBLY.................................................................254 PUMP.........................................................................257 DISASSEMBLY..............................................................257 ASSEMBLY.................................................................259 OIL LINE.....................................................................261 REMOVAL..................................................................261 ASSEMBLY.................................................................261 VALVE BODY...................................................................262 DISASSEMBLY..............................................................262 ASSEMBLY.................................................................270 4 WHEEL DRIVE SOLENOID VALVE.................................................278 DISASSEMBLY..............................................................278 ASSEMBLY.................................................................280 TRANSMISSION HOUSING.........................................................282 DISASSEMBLY..............................................................282 ASSEMBLY.................................................................292 CLUTCH PACK (A) AND GEAR SHAFT (D)...........................................302 DISASSEMBLY..............................................................302 Shaft A (Clutch Pack)................................................303 Gear Shaft D.........................................................310 Clutches And Disc Inspections............................................311 ASSEMBLY.................................................................312 Shaft (A) Clutch Pack................................................312 Gear Shaft D.........................................................320 CHECKING CLUTCH FUNCTION.................................................321 GEAR SHAFTS (B) AND (C)......................................................322 DISASSEMBLY..............................................................322 Gear Shaft (C).......................................................323 Gear Shaft B.........................................................330 ASSEMBLY.................................................................331 Gear Shaft C.........................................................331 Gear Shaft B.........................................................338 GEAR SHAFT (E)...............................................................340 DISASSEMBLY..............................................................340 ASSEMBLY.................................................................344 SHIFTER TOWER AND FORKS......................................................350 DISASSEMBLY..............................................................350 ASSEMBLY.................................................................353 BACKHOE CONTROL VALVE............................................................356 REMOVAL......................................................................356 INSTALLATION.................................................................357 FRONT AXLE ASSEMBLY..............................................................358 REMOVAL......................................................................358 INSTALLATION.................................................................359 FRONT AXLE OVERHAUL PROCEDURES...................................................360 STEERING CYLINDER ASSEMBLY...................................................360 DISASSEMBLY..............................................................360 ASSEMBLY.................................................................361 Checking Toe-in......................................................363 Camber Angle Adjustment..............................................365 FRONT AXLE END PLANETARY ASSEMBLY............................................366 DISASSEMBLY..............................................................366 Removing The Planetary Gears (If Necessary)..........................367 ASSEMBLY.................................................................367 AXLE END HUB ASSEMBLY........................................................376 DISASSEMBLY..............................................................376 ASSEMBLY.................................................................373 AXLE HOUSING.................................................................376 DISASSEMBLY..............................................................376 ASSEMBLY.................................................................378 DIFFERENTIAL.................................................................379 DISASSEMBLY..............................................................379 ASSEMBLY.................................................................381 Pinion Gear Contact Test.............................................384 PINION.......................................................................385 DISASSEMBLY..............................................................385 ASSEMBLY.................................................................388 CARRIER......................................................................392 DISASSEMBLY..............................................................392 ASSEMBLY.................................................................393 REAR AXLE ASSEMBLY...............................................................395 REMOVAL......................................................................395 INSTALLATION.................................................................397 REAR AXLE OVERHAUL PROCEDURES....................................................398 PARKING BRAKE ASSEMBLY.......................................................398 DISASSEMBLY..............................................................398 ASSEMBLY.................................................................400 MAINTENANCE..............................................................402 Brake Pad Adjustment Procedure.......................................402 Ball And Cam Replacement.............................................403 Lining Replacement...................................................403 Sleeve Seal Replacement..............................................404 Replacing The Cable Attachment Bracket...............................404 SERVICE BRAKE ASSEMBLY.......................................................405 DISASSEMBLY..............................................................405 ASSEMBLY.................................................................410 REAR AXLE END PLANETARY ASSEMBLY.............................................416 DISASSEMBLY..............................................................416 ASSEMBLY.................................................................421 DIFFERENTIAL.................................................................425 DISASSEMBLY..............................................................425 ASSEMBLY.................................................................427 Contact..............................................................429 Movements To Correct.................................................430 DIFFERENTIAL LOCK............................................................432 DISASSEMBLY..............................................................432 ASSEMBLY.................................................................435 CARRIER......................................................................438 DISASSEMBLY..............................................................438 ASSEMBLY.................................................................442 PINION.......................................................................446 DISASSEMBLY..............................................................446 ASSEMBLY.................................................................448 FRONT LOADER CONTROL VALVE ASSEMBLY..............................................452 REMOVAL......................................................................452 INSTALLATION.................................................................452 SOLENOID VALVE ASSEMBLY..........................................................453 REMOVAL......................................................................453 INSTALLATION.................................................................453 FRONT-END LOADER ASSEMBLY........................................................454 LOADER BOOM CYLINDERS........................................................454 REMOVAL..................................................................454 INSTALLATION.............................................................455 BLEED AIR FROM HYDRAULIC CYLINDERS.......................................456 BUCKET CYLINDER AND MONO-LINK................................................457 REMOVAL..................................................................457 INSTALLATION.............................................................459 LOADER BUCKET................................................................460 REMOVAL..................................................................460 INSTALLATION.............................................................460 LOADER BOOM ASSEMBLY.........................................................461 REMOVAL..................................................................461 INSTALLATION.............................................................463 BACKHOE ASSEMBLY.................................................................464 BUCKET CYLINDER..............................................................464 REMOVAL..................................................................464 INSTALLATION.............................................................465 ARM CYLINDER.................................................................466 REMOVAL..................................................................466 INSTALLATION.............................................................467 BOOM CYLINDER................................................................468 REMOVAL..................................................................468 INSTALLATION.............................................................470 SWING CYLINDERS..............................................................471 REMOVAL..................................................................471 INSTALLATION.............................................................473 BOOM LOCK CYLINDER...........................................................474 REMOVAL..................................................................474 INSTALLATION.............................................................475 BACKHOE BUCKET...............................................................476 REMOVAL..................................................................476 INSTALLATION.............................................................476 BACKHOE ARM..................................................................477 REMOVAL..................................................................477 INSTALLATION.............................................................479 BACKHOE BOOM.................................................................480 REMOVAL..................................................................480 INSTALLATION.............................................................481 BACKHOE SWING FRAME..........................................................482 REMOVAL..................................................................482 INSTALLATION.............................................................482 OUTRIGGER CYLINDERS..........................................................483 REMOVAL..................................................................483 INSTALLATION.............................................................484 OUTRIGGER ARMS...............................................................485 REMOVAL..................................................................485 INSTALLATION.............................................................485 WORK EQUIPMENT CYLINDER OVERHAUL PROCEDURES......................................486 LOADER AND BACKHOE CYLINDERS.................................................486 DISASSEMBLY..............................................................486 Arm Only.............................................................487 Boom Cylinder Rod Only...............................................487 All Cylinders........................................................487 Boom Gland Nut.......................................................487 ASSEMBLY.................................................................488 Boom Gland Only......................................................488 All Cylinders........................................................488 Assemble Piston......................................................488 Boom Cylinder Only...................................................488 Arm Cylinder Only....................................................489 Boom Cylinder Only...................................................489 All Cylinders........................................................490 Final Assembly.......................................................490 SWING CYLINDERS..............................................................491 DISASSEMBLY..............................................................491 ASSEMBLY................................................................. 0 Head.................................................................493 Piston...............................................................493 Assembling the complete Piston.......................................494 Assembling the complete piston.......................................494 Final Assembly.......................................................495 90 OTHERS............................................................................497 ELECTRICAL SCHEMATIC.............................................................499 CONNECTOR DESCRIPTION........................................................499 SIDE INSTRUMENT PANEL........................................................500 FRONT INSTRUMENT PANEL.......................................................501 FUSES, SWITCHES AND RELAYS...................................................502 WIRE HARNESS.................................................................503 SWITCHES (1).................................................................504 SWITCHES (2).................................................................505 TRANSMISSION HARNESS.........................................................506
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