Komatsu Bulldozer D31PLL-21 service & repair manual

Description Komatsu Bulldozer D31PLL-21 service & repair manual

Komatsu Bulldozer D31PLL-21 pdf workshop service manual

Serial numbers:
55226 and up

Specifications, testing, troubleshooting, maintenance, technical data, electrical wiring diagrams, hydraulic schematics, adjusting, assembly, disassembly, removal, installation instructions and other information

MANUAL CONTENT:
INDEX AND FOREWORD
ACRONYMS
SAFETY NOTICE
HOW TO READ THE SHOP MANUAL
EXPLANATION OF TERMS FOR MAINTENANCE STANDARD
HOW TO READ ELECTRIC WIRE CODE
PRECAUTIONS WHEN CARRYING OUT OPERATION
METHOD OF DISASSEMBLING AND CONNECTING PUSH-PULL TYPE COUPLER
STANDARD TIGHTENING TORQUE TABLE
CONVERSION TABLE

GENERAL
SPECIFICATION DRAWING
SPECIFICATIONS
WEIGHT TABLE
TABLE OF FUEL, COOLANT AND LUBRICANTS

STRUCTURE AND FUNCTION, MAINTENANCE STANDARD
ENGINE AND COOLING SYSTEM
COOLING SYSTEM
ENGINE CONTROL
POWER TRAIN
POWER TRAIN SYSTEM
DAMPER
HST HYDRAULIC EQUIPMENT ARRANGEMENT DIAGRAM
STEERING, BRAKE CONTROL
SOLENOID VALVE
TOWING VALVE
FINAL DRIVE
HST PUMP
SAFETY-SUCTION VALVE
CHARGE SAFETY VALVE
CHARGE PUMP
TOWING VALVE
HST MOTOR
ELECTRIC LEVER (FOR STEERING)
UNDERCARRIAGE AND FRAME
FRAME ASSEMBLY
TRACK FRAME, RECOIL SPRING
IDLER
TRACK ROLLER
CARRIER ROLLER
SPROCKET
TRACK SHOE
HYDRAULIC SYSTEM
ARRANGEMENT OF HYDRAULIC EQUIPMENT FOR WORK EQUIPMENT
WORK EQUIPMENT CONTROL
HYDRAULIC TANK, FILTER
PPC LOCK VALVE
HYDRAULIC PUMP
HYDRAULIC CYLINDER
CONTROL VALVE
CLSS
PPC VALVE
WORK EQUIPMENT
CUTTING EDGE, END BIT
RPTO
CONTROL VALVE
3-POINT HITCH
CAB AND ITS ATTACHMENTS
AIR CONDITIONER PIPING
ELECTRICAL SYSTEM
ENGINE CONTROL
HST CONTROL SYSTEM
GEAR SHIFT CONTROL SYSTEM
PARKING BRAKE CONTROL SYSTEM
COMPONENT EQUIPMENT OF SYSTEM
MONITOR SYSTEM
MONITOR PANEL
SENSORS

STANDARD VALUE TABLE
STANDARD VALUE TABLE FOR ENGINE
STANDARD VALUE TABLE FOR CHASSIS

TESTING AND ADJUSTING
GENERAL INFORMATION ON TESTING AND ADJUSTING
LIST OF TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING
SKETCH OF SPECIAL TOOL
ENGINE AND COOLING SYSTEM
MEASURING ENGINE SPEED
MEASURING INTAKE AIR PRESSURE (BOOST PRESSURE)
MEASURING EXHAUST TEMPERATURE
MEASURING EXHAUST GAS COLOR
ADJUSTING VALVE CLEARANCE
MEASURING COMPRESSION PRESSURE
MEASURING BLOW-BY PRESSURE
MEASURING ENGINE OIL PRESSURE
TESTING AND ADJUSTING FUEL INJECTION TIMING
BLEEDING AIR FROM FUEL CIRCUIT
ADJUSTING ENGINE STOP SOLENOID LINKAGE
ADJUSTING ENGINE SPEED SENSOR
REPLACEMENT OF FAN BELT
TESTING AND ADJUSTING AIR CONDITIONER COMPRESSOR BELT TENSION (WITH CAB)
ADJUSTING FUEL CONTROL LEVER AND DECELERATOR PEDAL
POWER TRAIN
TESTING AND ADJUSTING HST OIL PRESSURE
MEASURING HST SOLENOID VALVE OUTLET PRESSURE
TESTING TRAVEL DEVIATION
ADJUSTING HST MOTOR SPEED SENSOR
ADJUSTING PARKING BRAKE LEVER
PROCEDURE OF SIMPLE TEST OF BRAKE PERFORMANCE
ADJUSTING BRAKE PEDAL LINKAGE
METHOD OF RELEASING PARKING BRAKE (PROCEDURE FOR EMERGENCY ESCAPE)
UNDERCARRIAGE AND FRAME
TESTING AND ADJUSTING IDLER CLEARANCE
TESTING AND ADJUSTING TRACK SHOE TENSION
HYDRAULIC SYSTEM
TESTING AND ADJUSTING WORK EQUIPMENT OIL PRESSURE
MEASURING WORK EQUIPMENT PPC VALVE OUTPUT PRESSURE
ADJUSTING PLAY OF WORK EQUIPMENT PPC VALVE
ADJUSTING WORK EQUIPMENT LOCK LEVER
MEASURING LEAKAGE IN WORK EQUIPMENT CYLINDER
RELEASING RESIDUAL PRESSURE IN HYDRAULIC CIRCUIT
BLEEDING AIR FROM HYDRAULIC CIRCUIT
ELECTRICAL SYSTEM
PROCEDURE FOR TESTING DIODES
SPECIAL FUNCTIONS OF MONITOR PANEL (EMMS)
PREPARATION WORK FOR TROUBLESHOOTING FOR ELECTRIC SYSTEM
PM-CLINIC
PM-CLINIC SERVICE

TROUBLESHOOTING
GENERAL INFORMATION ON TROUBLESHOOTING
POINTS TO REMEMBER WHEN TROUBLESHOOTING
SEQUENCE OF EVENTS IN TROUBLESHOOTING
HANDLING OF ELECTRIC EQUIPMENT AND HYDRAULIC COMPONENT
CHECKS BEFORE TROUBLESHOOTING
CLASSIFICATION AND PROCEDURES OF TROUBLESHOOTING
CONNECTOR ARRANGEMENT DRAWING AND ELECTRIC CIRCUIT DIAGRAM OF EACH SYSTEM
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
T-BRANCH BOX AND T-BRANCH ADAPTER TABLE
TROUBLESHOOTING WHEN ERROR CODE IS DISPLAYED
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE)
TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE)
TROUBLESHOOTING OF ENGINE (S MODE)

DISASSEMBLY AND ASSEMBLY
GENERAL INFORMATION ON DISASSEMBLY AND ASSEMBLY
HOW TO READ THIS MANUAL
COATING MATERIALS LIST
SPECIAL TOOL LIST
SKETCHES OF SPECIAL TOOLS
ENGINE AND COOLING SYSTEM
REMOVAL AND INSTALLATION OF FUEL INJECTION PUMP ASSEMBLY
REMOVAL AND INSTALLATION OF CYLINDER HEAD ASSEMBLY
REMOVAL AND INSTALLATION OF ENGINE FRONT SEAL
REMOVAL AND INSTALLATION OF ENGINE REAR SEAL
REMOVAL AND INSTALLATION OF RADIATOR GUARD ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF RADIATOR, OIL COOLER, AND CHARGE AIR COOLER ASSEMBLIES
POWER TRAIN
REMOVAL AND INSTALLATION OF ENGINE AND HST PUMP ASSEMBLY
REMOVAL AND INSTALLATION OF DAMPER
UNDERCARRIAGE AND FRAME
SPREADING AND INSTALLATION OF TRACK SHOE ASSEMBLY
REMOVAL AND INSTALLATION OF HST MOTOR AND FINAL DRIVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF FINAL DRIVE ASSEMBLY
REMOVAL AND INSTALLATION OF IDLER AND RECOIL SPRING ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF RECOIL SPRING ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF IDLER ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF TRACK ROLLER ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF CARRIER ROLLER ASSEMBLY
HYDRAULIC SYSTEM
REMOVAL AND INSTALLATION OF HST PUMP ASSEMBLY
REMOVAL AND INSTALLATION OF MAIN CONTROL VALVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF MAIN CONTROL VALVE ASSEMBLY
REMOVAL AND INSTALLATION OF BLADE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLIES
OTHERS
REMOVAL AND INSTALLATION OF OPERATOR’S SEAT FRAME ASSEMBLY
REMOVAL AND INSTALLATION OF FUEL TANK ASSEMBLY
REMOVAL AND INSTALLATION OF HYDRAULIC TANK ASSEMBLY
REMOVAL AND INSTALLATION OF HST CONTROLLER ASSEMBLY

CIRCUIT DIAGRAMS
HYDRAULIC CIRCUIT DIAGRAM
RPTO HYDRAULIC CIRCUIT DIAGRAM
WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM
ELECTRICAL CIRCUIT DIAGRAM

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