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KOMATSU WB93S-5E0 BACKHOE-LOADER SHOP MANUAL WEBM008301 – PDF DOWNLOAD
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Description
KOMATSU WB93S-5E0 BACKHOE-LOADER SHOP MANUAL WEBM008301 – PDF DOWNLOAD
FILE DETAILS:
KOMATSU WB93S-5E0 BACKHOE-LOADER SHOP MANUAL WEBM008301 – PDF DOWNLOAD
Language : English
Pages : 666
Downloadable : Yes
File Type : PDF
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS:
KOMATSU WB93S-5E0 BACKHOE-LOADER SHOP MANUAL WEBM008301 – PDF DOWNLOAD
CONTENTS.................................................................................................... 3 REVISED PAGES............................................................................................... 5 k SAFETY.................................................................................................... 7 FOREWORD.................................................................................................... 9 HOW TO READ THE SHOP MANUAL................................................................................. 10 HOISTING INSTRUCTIONS....................................................................................... 11 STANDARD TIGHTENING TORQUE.................................................................................. 12 COATING MATERIALS........................................................................................... 14 ELECTRIC.................................................................................................... 15 WEIGHT TABLE................................................................................................ 16 TABLE OF OIL AND COOLANT QUANTITIES......................................................................... 17 CONVERSION TABLE............................................................................................ 19 10 STRUCTURE AND FUNCTION................................................................................... 27 POWER TRAIN............................................................................................. 28 TRANSMISSION (4WD)...................................................................................... 30 TRANSMISSION............................................................................................ 32 DRIVE SHAFTS............................................................................................ 35 CONTROL VALVE BLOCK..................................................................................... 37 FRONT AXLE.............................................................................................. 38 REAR AXLE............................................................................................... 41 STEERING SYSTEM (4WS)................................................................................... 45 HYDRAULIC CIRCUIT (WITH MECHANICAL CONTROL)............................................................. 49 HYDRAULIC CIRCUIT (WITH SERVOCONTROL)................................................................... 50 HYDRAULIC PUMP.......................................................................................... 51 1. MAIN PUMP........................................................................................ 52 2. DELIVERY CONTROL VALVE........................................................................... 57 8-SPOOL CONTROL VALVE (WITH MECHANICAL CONTROL)......................................................... 66 10-SPOOL CONTROL VALVE (WITH MECHANICAL CONTROL)........................................................ 72 8-SPOOL CONTROL VALVE (WITH SERVOCONTROL)............................................................... 78 10-SPOOL CONTROL VALVE (WITH SERVOCONTROL).............................................................. 84 CLSS.................................................................................................... 91 1. DESCRIPTION...................................................................................... 91 2. OPERATING PRINCIPLES............................................................................. 92 3. OPERATION FOR EACH CIRCUIT AND VALVE............................................................. 94 STEERING UNIT...........................................................................................112 PPC VALVES..............................................................................................113 SHOVEL PPC VALVE (STANDARD).........................................................................113 SHOVEL PPC VALVE (FLOAT + RETURN TO DIG)............................................................117 OUTRIGGERS PPC VALVE................................................................................123 PPC VALVE (BACKHOE CONTROL).............................................................................128 L.H. PPC VALVE......................................................................................128 R.H. PPC VALVE......................................................................................129 SOLENOID VALVE GROUP (EV1)..............................................................................130 VERSION WITH MECHANICAL CONTROLS WITHOUT 4 IN 1 BUCKET..............................................130 VERSION SERVOCONTROL WITHOUT 4 IN 1 BUCKET..........................................................131 VERSION WITH MECHANICAL CONTROLS WITH 4 IN 1 BUCKET.................................................132 VERSION SERVOCONTROL WITH 4 IN 1 BUCKET.............................................................133 SOLENOID VALVE GROUP (EV2)..............................................................................134 STEERING............................................................................................134 SAFETY VALVES...........................................................................................135 SHOVEL RAISE........................................................................................135 SHOVEL DUMP.........................................................................................136 BOOM................................................................................................137 ARM.................................................................................................138 SHOVEL CYLINDERS........................................................................................140 RAISING CYLINDER....................................................................................140 DUMPING CYLINDER....................................................................................140 4 IN 1 BUCKET.......................................................................................141 BACKHOE CYLINDERS.......................................................................................142 BOOM CYLINDER.......................................................................................142 ARM.................................................................................................142 BUCKET CYLINDER.....................................................................................143 OUTRIGGER CYLINDER..................................................................................143 BOOM SWING CYLINDER.................................................................................144 JIG ARM CYLINDER....................................................................................144 AIR-CONDITIONING UNIT...................................................................................146 OPERATION OF THE AIR CONDITIONING UNIT..................................................................147 FUSE AND RELAY CENTRE...................................................................................149 DRIVER SEAT WIRING......................................................................................150 SWITCH PANEL WIRING.....................................................................................151 FRONT DASH WIRING.......................................................................................152 ROOF WIRING.............................................................................................153 ENGINE WIRING...........................................................................................154 SPEED SELECTOR WIRING...................................................................................155 BACKHOE WIRING..........................................................................................156 4WS PUSH-BUTTONS PANEL WIRING...........................................................................157 4WD SOLENOID VALVES WIRING..............................................................................158 WIRING DIAGRAM (STANDARD VERSION) (see also Group 90)...................................................159 20 TESTING AND ADJUSTMENTS..................................................................................161 NORMAL OR STANDARD TECHNICAL DATA.......................................................................163 SPECIAL TOOLS...........................................................................................187 VALVE CLEARANCE ADJUSTING...............................................................................189 ENGINE SPEED TESTS......................................................................................190 TENSIONING THE AIR-CONDITIONING COMPRESSOR BELT.........................................................192 BLEEDING AIR FROM CIRCUITS - ELIMINATING RESIDUAL PRESSURE..............................................193 ADJUSTING ACCELERATOR PEDAL TRAVEL AND ACCELERATOR LEVER................................................195 ADJUSTING BRAKE PEDAL SLACK/ALIGNMENT...................................................................197 BRAKING SYSTEM CHECKS...................................................................................198 PARKING BRAKE ADJUSTMENT................................................................................201 CHECKING AND SETTING PRESSURE IN THE ATTACHMENTS HYDRAULIC CIRCUIT......................................203 CHECKING THE SETTING OF MAIN RELIEF AND SECONDARY VALVES................................................205 SETTING THE MAIN RELIEF VALVES AND THE REDUCING VALVES..................................................209 CHECKING AND ADJUSTING THE LS DIFFERENTIAL PRESSURE. ADJUSTING THE LS VALVE.............................211 CHECKING AND ADJUSTING SERVOCONTROLS SUPPLY PRESSURE....................................................213 ADJUSTING THE PC VALVE..................................................................................214 TESTING AND SETTING STEERING CONTROL SYSTEM PRESSURE....................................................215 CHECKING FOR LEAKS IN THE STEERING CYLINDERS............................................................216 TESTING PRESSURES IN THE POWER TRAIN GROUP..............................................................217 TESTING THE CORRECT FUNCTIONING OF THE POWER TRAINCLUTCHES..............................................219 ANALYSIS OF CAUSES HYDRAULIC DRIFT......................................................................220 FRONT EQUIPMENT.....................................................................................220 BACKHOE.............................................................................................222 JIG ARM CLEARANCE ADJUSTMENT............................................................................225 TESTING THE AIR-CONDITIONING UNIT.......................................................................229 EMPTYING THE AIR-CONDITIONING UNIT......................................................................231 TROUBLESHOOTING.........................................................................................232 FRONT AXLE TROUBLESHOOTING..........................................................................232 FRONT AXLE CHECKING AND TROUBLESHOOTING.............................................................235 REAR AXLE TROUBLESHOOTING...........................................................................237 REAR AXLE CHECKING AND TROUBLESHOOTING..............................................................240 TRANSMISSION TROUBLESHOOTING........................................................................242 30 REMOVAL AND INSTALLATION.................................................................................245 HOW TO READ THE MANUAL..................................................................................247 PRECAUTIONS TO BE TAKEN WHILE WORKING...................................................................248 SPECIAL TOOLS...........................................................................................249 ENGINE HOOD.............................................................................................253 Removal.............................................................................................253 Installation........................................................................................254 FRONT GUARD.............................................................................................255 Removal.............................................................................................255 Installation........................................................................................255 RADIATOR GROUP - INTERCOOLER............................................................................256 Removal.............................................................................................256 Installation........................................................................................260 INTERCOOLER.............................................................................................261 Removal.............................................................................................261 Installation........................................................................................262 CONDENSER (For machines equipped with an air-conditioning unit).........................................263 Removal.............................................................................................263 Installation........................................................................................263 EXHAUST PIPE............................................................................................264 Removal.............................................................................................264 Installation........................................................................................264 MUFFLER.................................................................................................265 Removal.............................................................................................265 Installation........................................................................................265 AIR FILTER..............................................................................................266 Removal.............................................................................................266 Installation........................................................................................266 ENGINE BELT.............................................................................................267 Replacement.........................................................................................267 TURBOCHARGER............................................................................................268 Removal.............................................................................................268 Installation........................................................................................269 AIR-CONDITIONING UNIT COMPRESSOR........................................................................270 Removal.............................................................................................270 Installation........................................................................................271 AIR-CONDITIONING UNIT COMPRESSOR BELT...................................................................272 Removal.............................................................................................272 Installation........................................................................................273 FAN AND HEATING GROUP...................................................................................274 Removal.............................................................................................274 Installation........................................................................................279 BATTERY.................................................................................................280 Removal.............................................................................................280 Installation........................................................................................281 FUEL TANK...............................................................................................282 Removal.............................................................................................282 Installation........................................................................................283 STEERING WHEEL AND TRANSMISSION-REVERSE, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP....284 Removal.............................................................................................284 Installation........................................................................................285 WORKING BRAKE PUMP GROUP................................................................................286 Removal.............................................................................................286 Installation........................................................................................288 STEERING UNIT...........................................................................................289 Removal.............................................................................................289 Installation........................................................................................290 CAB.....................................................................................................291 Removal.............................................................................................291 Installation........................................................................................298 HYDRAULIC OIL TANK......................................................................................299 Removal.............................................................................................299 Installation........................................................................................305 HYDRAULIC PUMP..........................................................................................306 Removal.............................................................................................306 Installation........................................................................................307 TRANSMISSION............................................................................................308 Removal.............................................................................................308 Installation........................................................................................312 TRANSMISSION............................................................................................313 Disassembly and assembly............................................................................313 CONVERTOR...............................................................................................417 Removal.............................................................................................417 Installation........................................................................................417 ENGINE..................................................................................................418 Removal.............................................................................................418 Installation........................................................................................422 CONTROL VALVE (Standard version)........................................................................423 Removal.............................................................................................423 Installation........................................................................................426 CONTROL VALVE (version with servocontrol)...............................................................427 Removal.............................................................................................427 Installation........................................................................................429 STEERING SOLENOID VALVE GROUP...........................................................................430 Removal.............................................................................................430 Installation........................................................................................430 FRONT AXLE..............................................................................................431 Removal.............................................................................................431 Installation........................................................................................433 FRONT AXLE..............................................................................................435 Disassembly and assembly............................................................................435 REAR AXLE...............................................................................................479 Removal.............................................................................................479 Installation........................................................................................481 Disassembly and assembly............................................................................482 SHOVEL PPC VALVE........................................................................................543 Removal.............................................................................................543 Installation........................................................................................544 SHOVEL LIFT CYLINDERS...................................................................................545 Removal.............................................................................................545 Installation........................................................................................546 SHOVEL DUMP CYLINDERS...................................................................................547 Removal.............................................................................................547 Installation........................................................................................548 SHOVEL..................................................................................................549 Removal.............................................................................................549 Installation........................................................................................549 FRONT WORKING EQUIPMENT.................................................................................550 Removal.............................................................................................550 Installation........................................................................................551 BACKHOE PPC VALVES (Optional)...........................................................................552 Removal.............................................................................................552 Installation........................................................................................553 PPC VALVE SUPPORT RELEASE CABLES........................................................................554 Removal.............................................................................................554 Installation........................................................................................555 PPC VALVE SUPPORT RETURN GAS SPRING.....................................................................556 Removal.............................................................................................556 Installation........................................................................................557 SOLENOID VALVE GROUP (servocontrol and optional attachment).............................................558 Removal.............................................................................................558 Installation........................................................................................559 BACKHOE BOOM CYLINDER...................................................................................560 Removal.............................................................................................560 Installation........................................................................................562 ARM CYLINDER............................................................................................563 Removal.............................................................................................563 Installation........................................................................................564 JIG ARM CYLINDER........................................................................................565 Removal.............................................................................................565 Installation........................................................................................565 OUTRIGGER CYLINDER......................................................................................566 Removal.............................................................................................566 Installation........................................................................................567 BACKHOE SWING CYLINDERS.................................................................................568 Removal.............................................................................................568 Installation........................................................................................570 BACKHOE BUCKET CYLINDER.................................................................................571 Removal.............................................................................................571 Installation........................................................................................572 BACKHOE BOOM SAFETY CYLINDER............................................................................573 Removal.............................................................................................573 Installation........................................................................................574 CYLINDER................................................................................................575 SHOVEL ARM, SHOVEL, BOOM, ARM, BUCKET, OUTRIGGERS...................................................575 Disassembly.....................................................................................575 Assembly........................................................................................577 BACKHOE SWING CYLINDERS.............................................................................580 Disassembly.....................................................................................580 Assembly........................................................................................583 BACKHOE WORKING EQUIPMENT...............................................................................586 Removal.............................................................................................586 Installation........................................................................................587 BACKHOE BUCKET..........................................................................................588 Removal.............................................................................................588 Installation........................................................................................588 BACKHOE BOOM CYLINDER...................................................................................589 Removal.............................................................................................589 Installation........................................................................................589 ARM.....................................................................................................590 Removal.............................................................................................590 Installation........................................................................................590 JIG ARM.................................................................................................591 Removal.............................................................................................591 Installation........................................................................................591 2nd ARM.................................................................................................592 Removal.............................................................................................592 Installation........................................................................................592 2nd ARM GUIDES..........................................................................................593 Removal.............................................................................................593 Installation........................................................................................593 BACKHOE SWING BRACKET...................................................................................594 Removal.............................................................................................594 Installation........................................................................................594 COMPLETE BACKHOE BACKFRAME..............................................................................595 Removal.............................................................................................595 Installation........................................................................................596 BACKFRAME LOCK PISTONS..................................................................................597 Removal.............................................................................................597 Installation........................................................................................598 40 STANDARD MAINTENANCE.....................................................................................599 TRANSMISSION............................................................................................600 FRONT AXLE..............................................................................................605 REAR AXLE...............................................................................................608 HYDRAULIC PUMP..........................................................................................612 CONTROL VALVE...........................................................................................614 8-SPOOL VERSION (WITH MECHANICAL CONTROL)...........................................................614 10-SPOOL VERSION (WITH MECHANICAL CONTROL)..........................................................622 8-SPOOL VERSION (WITH SERVOCONTROL).................................................................630 10-SPOOL VERSION (WITH SERVOCONTROL)................................................................638 PPC VALVES..............................................................................................646 SHOVEL CONTROL......................................................................................646 SHOVEL CYLINDERS........................................................................................648 DUMP CYLINDER.......................................................................................648 RAISE CYLINDER......................................................................................648 4 IN 1 BUCKET.......................................................................................649 BACKHOE CYLINDERS.......................................................................................650 BOOM................................................................................................650 ARM.................................................................................................650 BUCKET..............................................................................................650 BOOM SWING..........................................................................................651 OUTRIGGERS..........................................................................................652 JIG ARM.............................................................................................652 FRONT WORKING EQUIPMENT.................................................................................654 SWING BRACKET...........................................................................................656 BACKHOE WORKING EQUIPMENT...............................................................................658 90 OTHER....................................................................................................661 ELECTRICAL DIAGRAM (STANDARD VERSION)...................................................................663
DESCRIPTION:
KOMATSU WB93S-5E0 BACKHOE-LOADER SHOP MANUAL WEBM008301 – PDF DOWNLOAD
This shop manual has been prepared as an aid to improve the quality of repairs by giving the operator 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. The manual is divided into chapters on each main group of components; these chapters are further divided into the following sections.
STRUCTURE AND FUNCTION
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.
TESTING AND ADJUSTMENTS
This sections 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 charts correlating «Problems» to «Causes» are also included in this section.
REMOVAL AND INSTALLATION
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.
STANDARD MAINTENANCE
This section gives the judgement standards when inspecting disassembled parts.
S.S 27/12/24
