Komatsu WB93S-5 Backhoe Loader Shop Manual (WEBM007400)

Komatsu WB93S-5 Backhoe Loader Shop Manual (WEBM007400) (F000003 and up)

Komatsu WB93S-5 Backhoe Loader Shop Manual (WEBM007400) (F000003 and up) Index:

• CONTENTS
• REVISED PAGES
• k SAFETY
• FOREWORD
• HOW TO READ THE SHOP MANUAL
• HOISTING INSTRUCTIONS
• STANDARD TIGHTENING TORQUE
• COATING MATERIALS
• ELECTRIC
• WEIGHT TABLE
• TABLE OF OIL AND COOLANT QUANTITIES
• CONVERSION TABLE
• 10 STRUCTURE AND FUNCTION
  • POWER TRAIN
  • TRANSMISSION (4WD)
  • TRANSMISSION
  • DRIVE SHAFTS
  • CONTROL VALVE BLOCK
  • FRONT AXLE
  • REAR AXLE
  • STEERING SYSTEM (4WS)
  • HYDRAULIC CIRCUIT (WITH MECHANICAL CONTROL)
  • HYDRAULIC CIRCUIT (WITH SERVOCONTROL)
  • HYDRAULIC PUMP
    • 1. MAIN PUMP
    • 2. DELIVERY CONTROL VALVE
  • 8-SPOOL CONTROL VALVE (WITH MECHANICAL CONTROL)
  • 10-SPOOL CONTROL VALVE (WITH MECHANICAL CONTROL)
  • 8-SPOOL CONTROL VALVE (WITH SERVOCONTROL)
  • 10-SPOOL CONTROL VALVE (WITH SERVOCONTROL)
  • CLSS
    • 1. DESCRIPTION
    • 2. OPERATING PRINCIPLES
    • 3. OPERATION FOR EACH CIRCUIT AND VALVE
  • STEERING UNIT
  • PPC VALVES
    • SHOVEL PPC VALVE (STANDARD)
    • SHOVEL PPC VALVE (FLOAT + RETURN TO DIG)
    • OUTRIGGERS PPC VALVE
  • PPC VALVE (SERVOCONTROL VERSION)
    • L.H. PPC VALVE
    • R.H. PPC VALVE
  • SOLENOID VALVE GROUP (EV1)
    • VERSION WITH MECHANICAL CONTROLS WITHOUT 4 IN 1 BUCKET
    • VERSION WITH MECHANICAL CONTROLS WITH 4 IN 1 BUCKET
    • VERSION WITHOUT 4 IN 1 BUCKET
    • VERSION WITH 4 IN 1 BUCKET
  • SAFETY VALVES
    • SHOVEL RAISE
    • SHOVEL DUMP
    • BOOM
    • ARM
  • SHOVEL CYLINDERS
    • RAISING CYLINDER
    • DUMPING CYLINDER
    • 4 IN 1 BUCKET
  • BACKHOE CYLINDERS
    • BOOM CYLINDER
    • ARM
    • BUCKET CYLINDER
    • OUTRIGGER CYLINDER
    • BOOM SWING CYLINDER
    • JIG ARM CYLINDER
  • AIR-CONDITIONING UNIT
  • OPERATION OF THE AIR CONDITIONING UNIT
  • FUSE AND RELAY CENTRE
  • DRIVER SEAT WIRING
  • SWITCH PANEL WIRING
  • FRONT DASH WIRING
  • ROOF WIRING
  • ENGINE WIRING
  • SPEED SELECTOR WIRING
  • BACKHOE WIRING
  • 4WS PUSH-BUTTONS PANEL WIRING
  • 4WD SOLENOID VALVES WIRING
  • WIRING DIAGRAM (STANDARD VERSION) (see also Group 90)
• 20 TESTING AND ADJUSTMENTS
  • NORMAL OR STANDARD TECHNICAL DATA
  • SPECIAL TOOLS
  • ADJUSTING VALVE CLEARANCE
  • ENGINE SPEED TESTS
  • TENSIONING THE AIR-CONDITIONING COMPRESSOR BELT
  • BLEEDING AIR FROM CIRCUITS – ELIMINATING RESIDUAL PRESSURE
  • ADJUSTING ACCELERATOR PEDAL TRAVEL AND ACCELERATOR LEVER
  • ADJUSTING BRAKE PEDAL SLACK/ALIGNMENT
  • BRAKING SYSTEM CHECKS
  • PARKING BRAKE ADJUSTMENT
  • CHECKING AND SETTING PRESSURE IN THE ATTACHMENTS HYDRAULIC CIRCUIT
  • CHECKING THE SETTING OF MAIN RELIEF AND SECONDARY VALVES
  • SETTING THE MAIN RELIEF VALVES AND THE REDUCING VALVES
  • CHECKING AND ADJUSTING THE LS DIFFERENTIAL PRESSURE. ADJUSTING THE LS VALVE
  • CHECKING AND ADJUSTING SERVOCONTROLS SUPPLY PRESSURE
  • ADJUSTING THE PC VALVE
  • TESTING AND SETTING STEERING CONTROL SYSTEM PRESSURE
  • CHECKING FOR LEAKS IN THE STEERING CYLINDERS
  • TESTING PRESSURES IN THE POWER TRAIN GROUP
  • TESTING THE CORRECT FUNCTIONING OF THE POWER TRAINCLUTCHES
  • ANALYSIS OF CAUSES HYDRAULIC DRIFT
    • FRONT EQUIPMENT
    • BACKHOE
  • TESTING THE AIR-CONDITIONING UNIT
  • EMPTYING THE AIR-CONDITIONING UNIT
  • TROUBLESHOOTING
    • FRONT AXLE TROUBLESHOOTING
    • FRONT AXLE CHECKING AND TROUBLESHOOTING
    • REAR AXLE TROUBLESHOOTING
    • REAR AXLE CHECKING AND TROUBLESHOOTING
    • TRANSMISSION TROUBLESHOOTING
• 30 REMOVAL AND INSTALLATION
  • HOW TO READ THE MANUAL
  • PRECAUTIONS TO BE TAKEN WHILE WORKING
  • SPECIAL TOOLS
  • ENGINE HOOD
    • Removal
    • Installation
  • FRONT GUARD
    • Removal
    • Installation
  • RADIATOR GROUP
    • Removal
    • Installation
  • CONDENSER
  • (For machines equipped with an air-conditioning unit)
    • Removal
    • Installation
  • MUFFLER
    • Removal
    • Installation
  • AIR FILTER
    • Removal
    • Installation
  • TURBOCHARGER
    • Removal
    • Installation
  • AIR-CONDITIONING UNIT COMPRESSOR
    • Removal
    • Installation
  • AIR-CONDITIONING UNIT COMPRESSOR BELT
    • Removal
    • Installation
  • EXHAUST PIPE
    • Removal
    • Installation
  • FAN AND HEATING GROUP
    • Removal
    • Installation
  • BATTERY
    • Removal
    • Installation
  • FUEL TANK
    • Removal
    • Installation
  • STEERING WHEEL AND TRANSMISSION-REVERSE, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP
    • Removal
    • Installation
  • WORKING BRAKE PUMP GROUP
    • Removal
    • Installation
  • STEERING UNIT
    • Removal
    • Installation
  • CAB
    • Removal
    • Installation
  • HYDRAULIC OIL TANK
    • Removal
    • Installation
  • HYDRAULIC PUMP
    • Removal
    • Installation
  • TRANSMISSION
    • Removal
    • Installation
  • TRANSMISSION
    • Disassembly and assembly
  • CONVERTOR
    • Removal
    • Installation
  • ENGINE
    • Removal
    • Installation
  • CONTROL VALVE (Standard version)
    • Removal
    • Installation
  • CONTROL VALVE (version with servocontrol)
    • Removal
    • Installation
  • STEERING SOLENOID VALVE GROUP
    • Removal
    • Installation
  • FRONT AXLE
    • Removal
    • Installation
  • FRONT AXLE
    • Disassembly and assembly
  • REAR AXLE
    • Removal
    • Installation
    • Disassembly and assembly
  • SHOVEL PPC VALVE
    • Removal
    • Installation
  • SHOVEL LIFT CYLINDERS
    • Removal
    • Installation
  • SHOVEL DUMP CYLINDERS
    • Removal
    • Installation
  • SHOVEL
    • Removal
    • Installation
  • FRONT WORKING EQUIPMENT
    • Removal
    • Installation
  • BACKHOE PPC VALVES (Optional)
    • Removal
    • Installation
  • PPC VALVE SUPPORT RELEASE CABLES
    • Removal
    • Installation and adjusting
  • PPC VALVE SUPPORT RETURN GAS SPRING
    • Removal
    • Installation
  • SOLENOID VALVE GROUP (servocontrol and optional attachment)
    • Removal
    • Installation
  • BACKHOE BOOM CYLINDER
    • Removal
    • Installation
  • ARM CYLINDER
    • Removal
    • Installation
  • JIG ARM CYLINDER
    • Removal
    • Installation
  • OUTRIGGER CYLINDER
    • Removal
    • Installation
  • BACKHOE SWING CYLINDERS
    • Removal
    • Installation
  • BACKHOE BUCKET CYLINDER
    • Removal
    • Installation
  • BACKHOE BOOM SAFETY CYLINDER
    • Removal
    • Installation
  • CYLINDER
    • SHOVEL ARM, SHOVEL, BOOM, ARM, BUCKET, OUTRIGGERS
      • Disassembly
      • Assembly
    • BACKHOE SWING CYLINDERS
      • Disassembly
      • Assembly
  • BACKHOE WORKING EQUIPMENT
    • Removal
    • Installation
  • BACKHOE BUCKET
    • Removal
    • Installation
  • BACKHOE BOOM CYLINDER
    • Removal
    • Installation
  • ARM
    • Removal
    • Installation
  • JIG ARM
    • Removal
    • Installation
  • 2nd ARM
    • Removal
    • Installation
  • 2nd ARM GUIDES
    • Removal
    • Installation
  • BACKHOE SWING BRACKET
    • Removal
    • Installation
  • COMPLETE BACKHOE BACKFRAME
    • Removal
    • Installation
  • BACKFRAME LOCK PISTONS
    • Removal
    • Installation
• 40 STANDARD MAINTENANCE
  • TRANSMISSION
  • FRONT AXLE
  • REAR AXLE
  • HYDRAULIC PUMP
  • CONTROL VALVE
    • 8-SPOOL VERSION (WITH MECHANICAL CONTROL)
    • 10-SPOOL VERSION (WITH MECHANICAL CONTROL)
    • 8-SPOOL VERSION (WITH SERVOCONTROL)
    • 10-SPOOL VERSION (WITH SERVOCONTROL)
  • PPC VALVES
    • SHOVEL CONTROL
  • SHOVEL CYLINDERS
    • DUMP CYLINDER
    • RAISE CYLINDER
    • 4 IN 1 BUCKET
  • BACKHOE CYLINDERS
    • BOOM
    • ARM
    • BUCKET
    • BOOM SWING
    • OUTRIGGERS
    • JIG ARM
  • FRONT WORKING EQUIPMENT
  • SWING BRACKET
  • BACKHOE WORKING EQUIPMENT
• 90 OTHER
  • ELECTRICAL DIAGRAM (STANDARD VERSION)

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