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Komatsu WB146-5 Backhoe Loader Shop Manual CEBM016503 – PDF DOWNLOAD
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Komatsu WB146-5 Backhoe Loader Shop Manual
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Description
Komatsu WB146-5 Backhoe Loader Shop Manual
FILE DETAILS:
Komatsu WB146-5 Backhoe Loader Shop Manual
Brands: Komatsu
Equipment Type: Backhoe Loader
Manuals Type: Shop Manual
Machine Model: WB146-5
Serial Number: A23001 and up
Book Code: CEBM016503
Language: English
Pages: 586
File Format: Portable Document Format (PDF)
DESCRIPTION:
Komatsu WB146-5 Backhoe Loader Shop Manual
1 GENERAL:
This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity. This shop manual mainly contains the necessary technical information for operations performed in a service workshop. For ease of understanding, the manual is divided into the following sections. These sections are further divided into each main group of components.
GENERAL:
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and lubricant specification charts.
STRUCTURE, FUNCTION AND MAINTENANCE STANDARD:
This section explains the structure and function of each component. It serves not only to give an understanding of the structure, but also serves as reference material for troubleshooting. In addition, this section gives the judgement standards when inspecting disassembled parts.
STANDARD VALUE TABLE:
This section explains the standard values for new machine and judgement criteria for testing, adjusting and troubleshooting. This standard value table is used to check the standard values in testing and adjusting and to judge parts in troubleshooting.
TESTING AND ADJUSTING:
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at completion of the checks and repairs.
TROUBLESHOOTING:
Troubleshooting charts correlating “Problems” to “Causes” are also included in this section.
DISASSEMBLY AND ASSEMBLY:
This section explains the order to be followed when removing, installing, disassembling or assembling each component, as well as precautions to be taken for these operations.
DIAGRAMS AND SCHEMATICS:
This section has the foldout drawings for the machine.
TABLE OF CONTENTS:
Komatsu WB146-5 Backhoe Loader Shop Manual
COVER............................................................................... 1 FOREWORD............................................................................ 2 CONTENTS........................................................................ 2 LIST OF REVISED PAGES....................................................... 3 SAFETY.......................................................................... 9 SAFETY NOTICE............................................................... 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 PUSH PULL COUPLER............................................................... 14 TYPE 1...................................................................... 14 TYPE 2...................................................................... 15 TYPE 3...................................................................... 16 COATING MATERIALS............................................................... 17 STANDARD TIGHTENING TORQUE...................................................... 19 STANDARD TIGHTENING TORQUE OF BOLTS AND NUTS................................ 19 TIGHTENING TORQUE OF HOSE NUTS.............................................. 20 TIGHTENING TORQUE OF SPLIT FLANGE BOLTS..................................... 20 TIGHTENING TORQUE FOR FLARED NUTS........................................... 20 TABLE OF TIGHTENING TORQUES FOR O-RING BOSS PIPING JOINTS................... 21 TABLE OF TIGHTENING TORQUES FOR O-RING BOSS PLUGS........................... 21 TIGHTENING TORQUE TABLE FOR HOSES (TAPER SEAL TYPE AND FACE SEAL TYPE)...... 21 ELECTRIC WIRE CODE.............................................................. 22 CLASSIFICATION BY THICKNESS................................................. 22 CLASSIFICATION BY COLOR AND CODE............................................ 22 CONVERSION TABLES............................................................... 23 METHOD OF USING THE CONVERSION TABLE........................................ 23 01 GENERAL.......................................................................... 29 SPECIFICATION DRAWING........................................................... 30 SPECIFICATIONS.............................................................. 30 MACHINE DIMENSIONS AND WEIGHTS.......................................... 30 BACKHOE ARM................................................................. 31 WITH STANDARD ARM....................................................... 31 WITH EXTENDABLE ARM (RETRACTED)......................................... 32 WITH EXTENDABLE ARM (EXTENDED).......................................... 33 MACHINE SYSTEMS SPECIFICATIONS.................................................. 34 ENGINE...................................................................... 34 ELECTRICAL SYSTEM........................................................... 34 SERVICE REFILL CAPACITIES................................................... 34 TIRE PRESSURE............................................................... 34 TRANSMISSION................................................................ 35 TOTAL MASS.................................................................. 35 LOADER...................................................................... 35 BACKHOE..................................................................... 35 WEIGHT TABLE.................................................................... 36 FUEL, COOLANT, AND LUBRICANTS................................................... 37 PROPER SELECTION ACCORDING TO THE AMBIENT TEMPERATURE....................... 37 GREASE...................................................................... 38 FUEL REMARKS................................................................ 38 HOMOLOGATED (HEES) SYNTHETIC LUBRICANTS......................................... 39 LUBRICATION DIAGRAMS............................................................ 40 GENERAL VIEW................................................................ 40 10 STRUCTURE, FUNCTION AND MAINTENANCE.............................................. 41 POWER TRAIN..................................................................... 44 DESCRIPTION................................................................. 44 POWER FLOW.................................................................. 44 TRANSMISSION DIAGRAM............................................................ 46 TRANSMISSION.................................................................... 48 COMPLETE ASSEMBLY........................................................... 48 FORWARD REVERSE CLUTCH...................................................... 52 1ST THROUGH 4TH SPEED SHAFT................................................. 52 4WD SHAFT................................................................... 53 FRONT AXLE...................................................................... 54 COMPLETE ASSEMBLY........................................................... 54 DIFFERENTIAL................................................................ 55 PLANETARY................................................................... 56 REAR AXLE....................................................................... 57 COMPLETE ASSEMBLY........................................................... 57 DIFFERENTIAL................................................................ 58 PLANETARY................................................................... 59 WORK BRAKES................................................................. 60 DIFFERENTIAL LOCK........................................................... 61 HYDRAULIC PUMP.................................................................. 62 MAIN PUMP................................................................... 64 FUNCTION................................................................ 66 STRUCTURE............................................................... 66 OPERATION............................................................... 66 Pump Operation...................................................... 66 Control of Delivery................................................. 67 DELIVERY CONTROL VALVE.......................................................... 68 LS VALVE FUNCTION........................................................... 70 PC VALVE FUNCTION........................................................... 70 PC VALVE OPERATION.......................................................... 71 Spring Operation........................................................ 71 When Pump Pressure PA is Low............................................ 71 When Pump Pressure PA Is High........................................... 72 When Equilibrium Has Been Reached....................................... 73 MAIN CONTROL VALVE.............................................................. 74 CLSS............................................................................ 82 DESCRIPTION................................................................. 82 CHARACTERISTICS......................................................... 82 STRUCTURE............................................................... 82 OPERATING PRINCIPLES........................................................ 83 PUMPING PLATE CONTROL ANGLE............................................. 83 PRESSURE COMPENSATION CONTROL........................................... 84 MAIN CONTROL VALVE...................................................... 85 UNLOADING VALVE......................................................... 86 Neutral Position.................................................... 86 FUNCTION........................................................ 86 OPERATING....................................................... 86 Control Valve Fine Control.......................................... 87 FUNCTION........................................................ 87 OPERATING....................................................... 87 Control Valve Is In Use............................................. 88 FUNCTION........................................................ 88 OPERATING....................................................... 88 LS PRESSURE............................................................. 89 Function............................................................ 89 Operation w/o Outriggers............................................ 89 Operation w/o Outriggers............................................ 90 LS BY-PASS PLUG......................................................... 91 Description......................................................... 91 Operation........................................................... 91 PRESSURE COMPENSATION................................................... 92 Function............................................................ 92 Operation........................................................... 92 PRESSURE COMPENSATION VALVE............................................. 93 Function............................................................ 93 Compensation Characteristics........................................ 93 PRIORITY VALVE.......................................................... 94 PPC REDUCING VALVE...................................................... 95 Function............................................................ 95 Neutral Condition................................................... 95 Control Valve Operated.............................................. 96 STEERING UNIT................................................................... 98 TECHNICAL DATA.............................................................. 98 OPERATION................................................................... 98 PPC VALVE.......................................................................100 LOADER..........................................................................100 OPERATION...................................................................102 Neutral Position........................................................102 BUCKET PORTION..........................................................102 BOOM PORTION............................................................103 Fine Control, Neutral g Actuator........................................103 Fine Control, Actuator g Neutral........................................104 Fine Control, Neutral g Full Stroke.....................................104 Control Lever To Float Position.........................................105 Control Lever From Float Position.......................................105 OUTRIGGER.......................................................................106 OPERATION...................................................................107 Neutral Position........................................................107 Fine Control, Neutral g Actuator........................................108 Full Lever, Actuator g Neutral..........................................109 BACKHOE.........................................................................110 LEFT VALVE..................................................................110 RIGHT VALVE.................................................................111 SOLENOID VALVE..................................................................112 HYDRAULIC CONTROLS W/O MP BUCKET............................................112 HYDRAULIC CONTROLS WITH MP BUCKET...........................................113 LOADER CYLINDERS................................................................114 BOOM........................................................................114 CHARACTERISTICS.........................................................114 BUCKET......................................................................115 CHARACTERISTICS.........................................................115 MP BUCKET...................................................................116 CHARACTERISTICS.........................................................116 BACKHOE CYLINDERS...............................................................117 BOOM........................................................................117 CHARACTERISTICS.........................................................117 ARM.........................................................................118 CHARACTERISTICS.........................................................118 BUCKET......................................................................119 CHARACTERISTICS.........................................................119 TELESCOPIC ARM CYLINDER.....................................................120 CHARACTERISTICS.........................................................120 SWING.......................................................................121 CHARACTERISTICS.........................................................121 OUTRIGGER...................................................................122 CHARACTERISTICS.........................................................122 WORK EQUIPMENT..................................................................124 LOADER......................................................................124 BACKHOE.....................................................................128 AIR CONDITIONING................................................................134 20 TESTING, ADJUSTING ANDTROUBLESHOOTING............................................137 STANDARD VALUE TABLE............................................................139 ENGINE......................................................................139 CHASSIS.....................................................................140 SPECIAL TOOLS...................................................................147 ENGINE SPEED....................................................................148 ENGINE WITHOUT LOAD.........................................................148 MACHINE IN POWER MODE AT MIN............................................148 WITH CONVERTER STALLED..................................................148 CONVERTER STALLED AND HYDRAULIC PUMP UNDER LOAD.........................148 ANALYSIS................................................................149 VALVE CLEARANCE.................................................................150 AC COMPRESSOR BELT TENSION......................................................151 BLEED AIR FROM CIRCUITS.........................................................152 BLEED AIR FROM HYDRAULIC CIRCUIT............................................152 BLEED AIR FROM BRAKING CIRCUIT..............................................152 RELEASING RESIDUAL PRESSURE.................................................153 ACCELERATOR PEDAL AND LEVER.....................................................154 ACCELERATOR PEDAL TRAVEL....................................................154 ACCELERATOR LEVER TRAVEL....................................................155 BRAKE SYSTEM....................................................................156 CONTROL.....................................................................156 ADJUSTMENT..................................................................157 CHECKS......................................................................158 LEAKAGE CHECKS..........................................................158 INDIVIDUAL PUMP CHECK...................................................159 BRAKE GROUP LEAKAGE.....................................................160 PARKING BRAKE ADJUSTMENT........................................................161 HYDRAULIC CIRCUIT...............................................................162 INTRODUCTION................................................................162 INTRODUCTION............................................................162 MAIN CONTROL VALVE......................................................163 RELIEF VALVES...................................................................164 TESTING.....................................................................164 UNLOADING VALVE.........................................................164 MAIN RELIEF VALVE.......................................................164 SECONDARY VALVES........................................................164 Boom Swing, Loader Bucket Dump and Hammer...........................164 Backhoe Boom Raise..................................................165 Arm In, Loader Bucket, Backhoe Bucket, Boom Raise, And MP Bucket....166 SETTING RELIEF VALVES...........................................................168 MAIN RELIEF VALVE...........................................................168 CIRCUIT RELIEF VALVES.......................................................168 ARM IN, LOADER CURL, BACKHOE BUCKET CURL, BOOM RAISE, AND MP BUCKET.....168 SWING, LOADER DUMP, HAMMER, AND BOOM RAISE..............................169 LS DIFFERENTIAL PRESSURE........................................................170 CONTROL.....................................................................170 ADJUSTMENT..................................................................170 PPC SUPPLY PRESSURE.............................................................171 CHECK.......................................................................171 ADJUSTMENT..................................................................171 PC VALVE........................................................................172 ADJUSTMENT..................................................................172 STEERING CONTROL SYSTEM.........................................................173 CONTROL.....................................................................173 SETTING.....................................................................173 STEERING CYLINDER...............................................................174 POWER TRAIN GROUP...............................................................175 CONVERTER OIL PRESSURE......................................................175 CLUTCH ENGAGEMENT PRESSURE..................................................176 SUPPLY PRESSURE.............................................................176 TRANSMISSION CLUTCH FUNCTION....................................................177 MACHINE PREPARATION.........................................................177 CONTROL.....................................................................177 HYDRAULIC DRIFT.................................................................178 LOADER......................................................................178 BOOM CIRCUIT............................................................178 BUCKET CIRCUIT..........................................................179 BACKHOE.....................................................................180 BOOM CIRCUIT............................................................180 ARM CIRCUIT.............................................................181 BUCKET CIRCUIT..........................................................182 OUTRIGGERS CIRCUIT - W/O LOCK VALVES....................................183 AIR CONDITIONING................................................................184 WORK TEMPERATURE............................................................184 UNIT CHECK..................................................................185 EMPTYING THE AC UNIT........................................................186 TROUBLESHOOTING GUIDE...........................................................188 FRONT AXLE..................................................................188 REAR AXLE...................................................................193 TRANSMISSION................................................................198 FUSES AND RELAYS................................................................201 FUSE AND RELAY PANEL LOCATION...............................................201 FUSE AND RELAY PANEL LAYOUT.................................................202 FUSES...................................................................202 RELAYS..................................................................204 HEATING AND AIR CONDITIONING FUSES AND RELAYS...............................205 FUSES...................................................................205 RELAYS..................................................................205 30 DISASSEMBLY AND ASSEMBLY.........................................................207 HOW TO USE THIS MANUAL..........................................................212 REMOVAL AND INSTALLATION OF COMPONENTS......................................212 REMOVAL.................................................................212 INSTALLATION............................................................212 OVERHAUL OF COMPONENTS......................................................213 DISASSEMBLY PROCEDURES..................................................213 ASSEMBLY PROCEDURES.....................................................213 PRECAUTIONS WHEN PERFORMING OPERATIONS..........................................214 SPECIAL TOOL LIST...............................................................216 CONNECTOR REPAIR PROCEDURES.....................................................219 CONTACT TERMINAL REMOVAL (HD30 TYPE)........................................219 CRIMPING CONTACT TERMINAL (HD30 TYPE).......................................220 INSERTION OF CONTACT TERMINAL (HD30 TYPE)...................................221 CONTACT TERMINAL REMOVAL (DT TYPE)..........................................222 CRIMPING CONTACT TERMINAL (DT TYPE).........................................223 INSERTION OF CONTACT TERMINAL (DT TYPE).....................................224 STRIPPING INSULATION........................................................225 BLEED AIR FROM CIRCUITS.........................................................226 BLEED AIR FROM HYDRAULIC CIRCUIT............................................226 BLEED AIR FROM BRAKING CIRCUIT..............................................226 RELEASING RESIDUAL PRESSURE.................................................227 ENGINE HOOD.....................................................................228 REMOVAL.....................................................................228 INSTALLATION................................................................229 FRONT GUARD.....................................................................230 REMOVAL.....................................................................230 INSTALLATION................................................................230 RADIATOR........................................................................231 REMOVAL.....................................................................231 INSTALLATION................................................................234 AIR CONDITIONING CONDENSER......................................................235 REMOVAL.....................................................................235 INSTALLATION................................................................235 MUFFLER.........................................................................236 REMOVAL.....................................................................236 INSTALLATION................................................................237 AIR FILTER......................................................................238 REMOVAL.....................................................................238 INSTALLATION................................................................238 TURBOCHARGER....................................................................239 REMOVAL.....................................................................239 INSTALLATION................................................................241 REFRIGERANT COMPRESSOR..........................................................242 REMOVAL.....................................................................242 INSTALLATION................................................................244 REFRIGERANT COMPRESSOR BELT.....................................................245 REMOVAL.....................................................................245 INSTALLATION................................................................245 EXHAUST STACK...................................................................246 REMOVAL.....................................................................246 INSTALLATION................................................................247 OPERATOR’S SEAT.................................................................248 REMOVAL.....................................................................248 INSTALLATION................................................................248 CAB HEATING AND COOLING SYSTEM..................................................249 REMOVAL.....................................................................249 FAN.....................................................................253 HEATER CORE.............................................................254 INSTALLATION................................................................255 BATTERY.........................................................................256 REMOVAL.....................................................................256 INSTALLATION................................................................257 FUEL TANK.......................................................................258 REMOVAL.....................................................................258 INSTALLATION................................................................259 STEERING AND FRONT DASH ASSEMBLY................................................260 STEERING WHEEL..............................................................260 INSTALLATION............................................................261 FRONT DASH ASSEMBLY.........................................................262 REMOVAL.................................................................262 INSTALLATION............................................................264 STEERING UNIT...............................................................265 REMOVAL.................................................................265 INSTALLATION............................................................266 CAB.............................................................................267 REMOVAL.....................................................................267 INSTALLATION................................................................274 HYDRAULIC OIL TANK..............................................................275 REMOVAL.....................................................................275 INSTALLATION................................................................281 HYDRAULIC PUMP..................................................................282 REMOVAL.....................................................................282 INSTALLATION................................................................284 TRANSMISSION....................................................................285 REMOVAL.....................................................................285 INSTALLATION................................................................289 TRANSMISSION OVERHAUL PROCEDURES................................................290 TORQUE CONVERTER............................................................290 REMOVAL.................................................................290 INSTALLATION............................................................290 PLUGS AND FILTERS...........................................................291 DISASSEMBLY.............................................................291 ASSEMBLY................................................................295 PUMP........................................................................298 DISASSEMBLY.............................................................298 ASSEMBLY................................................................300 OIL LINE....................................................................302 REMOVAL.................................................................302 ASSEMBLY................................................................302 VALVE BODY..................................................................303 DISASSEMBLY.............................................................303 ASSEMBLY................................................................311 4 WHEEL DRIVE SOLENOID VALVE................................................319 DISASSEMBLY.............................................................319 ASSEMBLY................................................................321 TRANSMISSION HOUSING........................................................323 DISASSEMBLY.............................................................323 ASSEMBLY................................................................333 CLUTCH PACK (A) AND GEAR SHAFT (D)..........................................343 DISASSEMBLY.............................................................343 CLUTCHES AND DISC INSPECTIONS...........................................352 ASSEMBLY................................................................353 CHECKING CLUTCH FUNCTION................................................362 GEAR SHAFTS (B) AND (C).....................................................363 DISASSEMBLY.............................................................363 ASSEMBLY................................................................372 GEAR SHAFT (E)..............................................................381 DISASSEMBLY.............................................................381 ASSEMBLY................................................................385 SHIFTER TOWER AND FORKS.....................................................391 DISASSEMBLY.............................................................391 ASSEMBLY................................................................394 ENGINE..........................................................................397 REMOVAL.....................................................................397 INSTALLATION................................................................403 STEERING SOLENOID VALVE.........................................................404 REMOVAL.....................................................................404 INSTALLATION................................................................404 FRONT AXLE ASSEMBLY.............................................................406 REMOVAL.....................................................................406 INSTALLATION................................................................407 FRONT AXLE OVERHAUL PROCEDURES..................................................408 STEERING CYLINDER ASSEMBLY..................................................408 DISASSEMBLY.............................................................408 ASSEMBLY................................................................409 FRONT AXLE END PLANETARY ASSEMBLY...........................................414 DISASSEMBLY.............................................................414 ASSEMBLY................................................................416 AXLE END HUB ASSEMBLY.......................................................417 DISASSEMBLY.............................................................417 ASSEMBLY................................................................421 AXLE HOUSING................................................................424 DISASSEMBLY.............................................................424 ASSEMBLY................................................................426 DIFFERENTIAL................................................................427 DISASSEMBLY.............................................................427 ASSEMBLY................................................................429 PINION......................................................................433 DISASSEMBLY.............................................................433 ASSEMBLY................................................................436 CARRIER.....................................................................440 DISASSEMBLY.............................................................440 ASSEMBLY................................................................441 REAR AXLE ASSEMBLY..............................................................443 REMOVAL.....................................................................443 INSTALLATION................................................................445 REAR AXLE OVERHAUL PROCEDURES...................................................446 PARKING BRAKE ASSEMBLY......................................................446 DISASSEMBLY.............................................................446 ASSEMBLY................................................................448 MAINTENANCE.............................................................450 SERVICE BRAKE ASSEMBLY......................................................453 DISASSEMBLY.............................................................453 ASSEMBLY................................................................458 REAR AXLE END PLANETARY ASSEMBLY............................................464 DISASSEMBLY.............................................................464 ASSEMBLY................................................................469 DIFFERENTIAL................................................................473 DISASSEMBLY.............................................................473 ASSEMBLY................................................................475 DIFFERENTIAL LOCK...........................................................480 DISASSEMBLY.............................................................480 ASSEMBLY................................................................483 CARRIER.....................................................................486 DISASSEMBLY.............................................................486 ASSEMBLY................................................................490 PINION......................................................................494 DISASSEMBLY.............................................................494 ASSEMBLY................................................................496 FRONT LOADER PPC VALVE..........................................................500 REMOVAL.....................................................................500 INSTALLATION................................................................501 FRONT-END LOADER ASSEMBLY.......................................................502 LOADER BOOM CYLINDERS.......................................................502 INSTALLATION................................................................503 BUCKET CYLINDERS............................................................504 REMOVAL.................................................................504 INSTALLATION............................................................505 FRONT LOADER BUCKET.........................................................506 REMOVAL.................................................................506 INSTALLATION............................................................506 LOADER BOOM ASSEMBLY........................................................508 REMOVAL.................................................................508 INSTALLATION............................................................509 BACKHOE PPC VALVE...............................................................510 REMOVAL.....................................................................510 INSTALLATION................................................................511 PPC VALVE SUPPORT RELEASE CABLES................................................512 REMOVAL.....................................................................512 INSTALLATION AND ADJUSTING..................................................514 PPC VALVE GAS STRUT.............................................................515 REMOVAL.....................................................................515 INSTALLATION................................................................517 CONTROL VALVE...................................................................518 REMOVAL.....................................................................518 INSTALLATION................................................................520 PPC VALVE.......................................................................522 REMOVAL.....................................................................522 INSTALLATION................................................................523 BACKHOE ASSEMBLY................................................................524 BUCKET CYLINDER.............................................................524 REMOVAL.................................................................524 INSTALLATION............................................................525 EXTENDABLE ARM CYLINDER.....................................................526 REMOVAL.................................................................526 INSTALLATION............................................................526 ARM CYLINDER................................................................528 REMOVAL.................................................................528 INSTALLATION............................................................529 BOOM CYLINDER...............................................................530 REMOVAL.................................................................530 INSTALLATION............................................................532 SWING CYLINDERS.............................................................533 REMOVAL.................................................................533 INSTALLATION............................................................535 BOOM LOCK CYLINDER..........................................................536 REMOVAL.................................................................536 INSTALLATION............................................................537 BACKHOE BUCKET..............................................................538 REMOVAL.................................................................538 INSTALLATION............................................................538 BACKHOE ARM.................................................................539 REMOVAL.................................................................539 INSTALLATION............................................................541 EXTENDABLE ARM..............................................................542 INSTALLATION............................................................542 EXTENDABLE ARM GIBS.........................................................543 INSTALLATION............................................................543 BACKHOE BOOM................................................................544 REMOVAL.................................................................544 INSTALLATION............................................................545 BACKHOE SWING FRAME.........................................................546 REMOVAL.................................................................546 INSTALLATION............................................................546 OUTRIGGER CYLINDERS.........................................................548 REMOVAL.................................................................548 INSTALLATION............................................................549 OUTRIGGER ARMS..............................................................550 REMOVAL.................................................................550 INSTALLATION............................................................550 WORK EQUIPMENT CYLINDER OVERHAUL................................................551 LOADER AND BACKHOE CYLINDERS................................................551 DISASSEMBLY.............................................................551 ASSEMBLY................................................................553 SWING CYLINDERS.............................................................556 DISASSEMBLY.............................................................556 ASSEMBLY................................................................557 90 OTHERS...........................................................................561 HYDRAULIC CIRCUIT...............................................................563 1 OF 4......................................................................563 2 OF 4......................................................................565 3 OF 4......................................................................567 4 OF 4......................................................................569 ELECTRICAL SCHEMATIC............................................................571 WIRING - 1 OF 7.............................................................571 WIRING - 2 OF 7.............................................................573 WIRING - 3 OF 7.............................................................575 WIRING - 4 OF 7.............................................................577 WIRING - 5 OF 7.............................................................579 WIRING - 6 OF 7.............................................................581 WIRING - 7 OF 7.............................................................583 LEGEND FOR WIRING SCHEMATIC.................................................585
KOMATSU WB146-5 BACKHOE LOADER SHOP MANUAL CEBM016503 – PDF DOWNLOAD:
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1 review for Komatsu WB146-5 Backhoe Loader Shop Manual CEBM016503 – PDF DOWNLOAD
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Alan Colson –
I have only had one issue with a manual and that was it downloaded in Spanish. Not much good to me but I did get the English version at no charge.