Komatsu WB93R-5 Backhoe Loader Shop Manual – PDF DOWNLOAD

Description

Komatsu WB93R-5 Backhoe Loader Shop Manual

FILE DETAILS:

Komatsu WB93R-5 Backhoe Loader Shop Manual

File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
Product Code : WEBM005800
Total Pages : 614

KOMATSU WB93R-5 BACKHOE LOADER SHOP MANUAL – PDF DOWNLOAD:

DESCRIPTION:

Komatsu WB93R-5 Backhoe Loader Shop Manual

FOREWORD:
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 chapters; these chapters are further divided into the each main group of components.

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.
In addition, this section may contain hydraulic circuit diagrams, electric circuit diagrams, and maintenance standards.
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 charts correlating “Problems” with “Causes” are also included in this section.
DISASSEMBLY AND ASSEMBLY:
This section explains the procedures for removing, installing, disassembling and assembling each component, as well as precautions for them.
MAINTENANCE STANDARD:
This section gives the judgment standards for inspection of disassembled parts. The contents of this section may be described in STRUCTURE AND FUNCTION.

TABLE OF CONTENTS:

Komatsu WB93R-5 Backhoe Loader Shop Manual

WEBM005800_WB93R-5..............................................................................................  3
	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
		HYDRAULIC CIRCUIT (WITH MECHANICAL CONTROL)............................................................. 45
		HYDRAULIC CIRCUIT (WITH SERVOCONTROL)................................................................... 46
		HYDRAULIC PUMP.......................................................................................... 47
		8-SPOOL CONTROL VALVE (WITH MECHANICAL CONTROL)......................................................... 62
		10-SPOOL CONTROL VALVE (WITH MECHANICAL CONTROL)........................................................ 68
		8-SPOOL CONTROL VALVE (WITH SERVOCONTROL)............................................................... 74
		10-SPOOL CONTROL VALVE (WITH SERVOCONTROL).............................................................. 80
		CLSS.................................................................................................... 87
		STEERING UNIT...........................................................................................108
		PPC VALVES..............................................................................................109
		PPC VALVE (SERVOCONTROL VERSION)........................................................................124
		SOLENOID VALVE GROUP (EV1)..............................................................................126
		SAFETY VALVES...........................................................................................130
		SHOVEL CYLINDERS........................................................................................134
		BACKHOE CYLINDERS.......................................................................................136
		AIR-CONDITIONING UNIT...................................................................................140
		HOW THE AIR-CONDITIONING UNIT FUNCTIONS.................................................................141
		FUSE AND RELAY CENTRE...................................................................................143
		DRIVER SEAT WIRING......................................................................................144
		SWITCH PANEL WIRING.....................................................................................145
		FRONT DASH WIRING.......................................................................................146
		ROOF WIRING.............................................................................................147
		ENGINE WIRING...........................................................................................148
		SPEED SELECTOR WIRING...................................................................................149
		BACKHOE WIRING..........................................................................................150
		JIG ARM WIRING..........................................................................................151
		WIRING DIAGRAM (STANDARD VERSION) (see also Group 90)...................................................152
	20 TESTING AND ADJUSTMENTS..................................................................................153
		NORMAL OR STANDARD TECHNICAL DATA.......................................................................155
		SPECIAL TOOLS...........................................................................................179
		ADJUSTING VALVE CLEARANCE...............................................................................181
		ENGINE SPEED TESTS......................................................................................182
		TENSIONING THE AIR-CONDITIONING COMPRESSOR BELT.........................................................184
		BLEEDING AIR FROM CIRCUITS - ELIMINATING RESIDUAL PRESSURE..............................................185
		ADJUSTING ACCELERATOR PEDAL TRAVEL AND ACCELERATOR LEVER................................................187
		ADJUSTING BRAKE PEDAL...................................................................................189
		CHECKING AND SETTING PRESSURE IN THE ATTACHMENTS HYDRAULIC CIRCUIT......................................190
		CHECKING THE SETTING OF MAIN RELIEF AND SECONDARY VALVES................................................192
		SETTING THE MAIN RELIEF VALVES AND THE REDUCING VALVES..................................................196
		CHECKING AND ADJUSTING THE LS DIFFERENTIAL PRESSURE. ADJUSTING THE LS VALVE.............................198
		CHECKING AND ADJUSTING SERVOCONTROLS SUPPLY PRESSURE....................................................200
		ADJUSTING THE PC VALVE..................................................................................201
		TESTING AND SETTING STEERING CONTROL SYSTEM PRESSURE....................................................202
		CHECKING FOR LEAKS IN THE STEERING CYLINDERS............................................................203
		TESTING PRESSURES IN THE POWER TRAIN GROUP..............................................................204
		TESTING THE CORRECT FUNCTIONING OF THE POWER TRAINCLUTCHES..............................................206
		ANALYSIS OF CAUSES HYDRAULIC DRIFT......................................................................207
		TESTING THE AIR-CONDITIONING UNIT.......................................................................212
		EMPTYING THE AIR-CONDITIONING UNIT......................................................................214
		TROUBLESHOOTING.........................................................................................215
	30 REMOVAL AND INSTALLATION.................................................................................229
		HOW TO READ THE MANUAL..................................................................................231
		PRECAUTIONS TO BE TAKEN WHILE WORKING...................................................................232
		SPECIAL TOOLS...........................................................................................233
		ENGINE HOOD.............................................................................................237
			Removal.............................................................................................237
			Installation........................................................................................238
		FRONT GUARD.............................................................................................239
			Removal.............................................................................................239
			Installation........................................................................................239
		RADIATOR GROUP..........................................................................................240
			Removal.............................................................................................240
			Installation........................................................................................243
		CONDENSER (For machines equipped with an air-conditioning unit).........................................244
			Removal.............................................................................................244
			Installation........................................................................................244
		MUFFLER.................................................................................................245
			Removal.............................................................................................245
			Installation........................................................................................245
		AIR FILTER..............................................................................................246
			Removal.............................................................................................246
			Installation........................................................................................246
		TURBOCHARGER............................................................................................247
			Removal.............................................................................................247
			Installation........................................................................................248
		AIR-CONDITIONING UNIT COMPRESSOR........................................................................249
			Removal.............................................................................................249
			Installation........................................................................................250
		AIR-CONDITIONING UNIT COMPRESSOR BELT...................................................................251
			Removal.............................................................................................251
			Installation........................................................................................252
		EXHAUST PIPE............................................................................................253
			Removal.............................................................................................253
			Installation........................................................................................253
		FAN AND HEATING GROUP...................................................................................254
			Removal.............................................................................................254
			Installation........................................................................................259
		BATTERY.................................................................................................260
			Removal.............................................................................................260
			Installation........................................................................................261
		FUEL TANK...............................................................................................262
			Removal.............................................................................................262
			Installation........................................................................................263
		STEERING WHEEL AND TRANSMISSION-REVERSE, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP....264
			Removal.............................................................................................264
			Installation........................................................................................265
		WORKING BRAKE PUMP GROUP................................................................................266
			Removal.............................................................................................266
			Installation........................................................................................268
		STEERING UNIT...........................................................................................269
			Removal.............................................................................................269
			Installation........................................................................................270
		CAB.....................................................................................................271
			Removal.............................................................................................271
			Installation........................................................................................278
		HYDRAULIC OIL TANK......................................................................................279
			Removal.............................................................................................279
			Installation........................................................................................285
		PISTON PUMP.............................................................................................286
			Removal.............................................................................................286
			Installation........................................................................................287
		TRANSMISSION............................................................................................288
			Removal.............................................................................................288
			Installation........................................................................................292
		TRANSMISSION............................................................................................293
			Disassembly and assembly............................................................................293
		CONVERTOR...............................................................................................397
			Removal.............................................................................................397
			Installation........................................................................................397
		ENGINE..................................................................................................398
			Removal.............................................................................................398
			Installation........................................................................................402
		CONTROL VALVE (Standard version)........................................................................403
			Removal.............................................................................................403
			Installation........................................................................................406
		CONTROL VALVE (version with servocontrol)...............................................................407
			Removal.............................................................................................407
			Installation........................................................................................409
		FRONT AXLE..............................................................................................410
			Removal.............................................................................................410
			Installation........................................................................................412
			Disassembly and assembly............................................................................413
		REAR AXLE...............................................................................................446
			Removal.............................................................................................446
			Installation........................................................................................448
			Disassembly and assembly............................................................................449
		SHOVEL PPC VALVE........................................................................................499
			Removal.............................................................................................499
			Installation........................................................................................500
		SHOVEL LIFT CYLINDERS...................................................................................501
			Removal.............................................................................................501
			Installation........................................................................................502
		SHOVEL DUMP CYLINDERS...................................................................................503
			Removal.............................................................................................503
			Installation........................................................................................504
		SHOVEL..................................................................................................505
			Removal.............................................................................................505
			Installation........................................................................................505
		FRONT WORKING EQUIPMENT.................................................................................506
			Removal.............................................................................................506
			Installation........................................................................................507
		BACKHOE PPC VALVES (Optional)...........................................................................508
			Removal.............................................................................................508
			Installation........................................................................................509
		PPC VALVE SUPPORT RELEASE CABLES........................................................................510
			Removal.............................................................................................510
			Installation and adjusting..........................................................................512
		PPC VALVE SUPPORT RETURN GAS SPRING.....................................................................513
			Removal.............................................................................................513
			Installation........................................................................................514
		SOLENOID VALVE GROUP (servocontrol and optional attachment).............................................515
			Removal.............................................................................................515
			Installation........................................................................................516
		BACKHOE BOOM CYLINDER...................................................................................517
			Removal.............................................................................................517
			Installation........................................................................................519
		ARM CYLINDER............................................................................................520
			Removal.............................................................................................520
			Installation........................................................................................521
		JIG ARM CYLINDER........................................................................................522
			Removal.............................................................................................522
			Installation........................................................................................522
		OUTRIGGER CYLINDER......................................................................................523
			Removal.............................................................................................523
			Installation........................................................................................524
		BACKHOE SWING CYLINDERS.................................................................................525
			Removal.............................................................................................525
			Installation........................................................................................527
		BACKHOE BUCKET CYLINDER.................................................................................528
			Removal.............................................................................................528
			Installation........................................................................................529
		BACKHOE BOOM SAFETY CYLINDER............................................................................530
			Removal.............................................................................................530
			Installation........................................................................................531
		BACKHOE WORKING EQUIPMENT...............................................................................532
			Removal.............................................................................................532
			Installation........................................................................................533
		BACKHOE BUCKET..........................................................................................534
			Removal.............................................................................................534
			Installation........................................................................................534
		BACKHOE BOOM CYLINDER...................................................................................535
			Removal.............................................................................................535
			Installation........................................................................................535
		ARM.....................................................................................................536
			Removal.............................................................................................536
			Installation........................................................................................536
		JIG ARM.................................................................................................537
			Removal.............................................................................................537
			Installation........................................................................................537
		2nd ARM.................................................................................................538
			Removal.............................................................................................538
			Installation........................................................................................538
		2nd ARM GUIDES..........................................................................................539
			Removal.............................................................................................539
			Installation........................................................................................539
		BACKHOE SWING BRACKET...................................................................................540
			Removal.............................................................................................540
			Installation........................................................................................540
		COMPLETE BACKHOE BACKFRAME..............................................................................541
			Removal.............................................................................................541
			Installation........................................................................................542
		BACKFRAME LOCK PISTONS..................................................................................543
			Removal.............................................................................................543
			Installation........................................................................................544
	40 STANDARD MAINTENANCE.....................................................................................545
		TRANSMISSION............................................................................................546
		FRONT AXLE..............................................................................................551
		REAR AXLE...............................................................................................555
		HYDRAULIC PUMP..........................................................................................559
		CONTROL VALVE...........................................................................................562
		PPC VALVES..............................................................................................594
		SHOVEL CYLINDERS........................................................................................596
		BACKHOE CYLINDERS.......................................................................................598
		FRONT WORKING EQUIPMENT.................................................................................602
		SWING BRACKET...........................................................................................604
		BACKHOE WORKING EQUIPMENT...............................................................................606
	90 OTHER....................................................................................................609
		ELECTRICAL DIAGRAM (STANDARD VERSION)...................................................................611

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