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Airman (Hitachi) Zaxis 27U, 30U, 35U Excavator Pdf Technical and Workshop Manual

Name: Airman (Hitachi) Zaxis 27U, 30U, 35U Excavator Pdf Technical and Workshop Manual
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Airman (Hitachi) Zaxis 27U, 30U, 35U Excavator Pdf Technical and Workshop Manual

This manual provides detailed technical information, precise specifications, and step-by-step procedures required for accurate diagnostics and efficient service operations.

INDEX
INDEX(W)
INTRODUCTION
SAFETY
SECTION 1 GENERAL INFORMATION
- Precautions for Disassembling and Assembling
  - PRECAUTIONS FOR DISASSEMBLING AND ASSEMBLING
- Tightening
  - TIGHTENING TORQUE SPECIFICATIONS
  - TORQUE CHART
  - PIPING JOINT
  - PERIODIC REPLACEMENT OF PARTS
- Painting
  - PAINTING
- Bleeding Air
  - BLEED AIR FROM HYDRAULIC OIL TANK
SECTION 2 UPPERSTRUCTURE
- Canopy
  - REMOVE AND INSTALL CANOPY
- Counterweight
  - REMOVE AND INSTALL COUNTERWEIGHT
- Pump Device
  - REMOVE AND INSTALL PUMP DEVICE
  - DISASSEMBLE PUMP DEVICE (ZAXIS27U)
  - ASSEMBLE PUMP DEVICE (ZAXIS27U)
  - DISASSEMBLE PUMP DEVICE (ZAXIS30U, ZAXIS35U)
  - ASSEMBLE PUMP DEVICE (ZAXIS30U, ZAXIS35U)
  - MAINTENANCE STANDARD
- Control Valve
  - REMOVE AND INSTALL CONTROL VALVE
  - DISASSEMBLE AND ASSEMBLE CONTROL VALVE
  - DISASSEMBLE AND ASSEMBLE BODY
  - DISASSEMBLE BOOM ANTI-DRIFT VALVE
  - ASSEMBLE BOOM ANTI-DRIFT VALVE
  - DISASSEMBLE AND ASSEMBLE SPOOL
  - DISASSEMBLE AND ASSEMBLE ARM REGENERATIVE VALVE, CHECK VALVE, AND ORIFICE
- Swing Device
  - REMOVE AND INSTALL SWING DEVICE
  - DISASSEMBLE SWING DEVICE
  - ASSEMBLE SWING DEVICE
  - DISASSEMBLE SWING MOTOR
  - ASSEMBLE SWING MOTOR
  - MAINTENANCE STANDARD
- Pilot Valve
  - REMOVE AND INSTALL PILOT VALVE
  - REMOVE AND INSTALL FRONT PILOT VALVE
  - REMOVE AND INASTALL TRAVEL PILOT VALVE
  - REMOVE AND INSTALL BLADE PILOT VALVE
  - REMOVE AND INSTALL BOOM SWING PILOT VALVE
  - DISASSEMBLE FRONT PILOT VALVE
  - ASSEMBLE FRONT PILOT VALVE
  - DISASSEMBLE TRAVEL PILOT VALVE
  - ASSEMBLE TRAVEL PILOT VALVE
  - DISASSEMBLE BOOM SWING PILOT VALVE
  - ASSEMBLE BOOM SWING PILOT VALVE
  - DISASSEMBLE BLADE PILOT VALVE
  - ASSEMBLE BLADE PILOT VALVE
- Solenoid Valve
  - REMOVE AND INSTALL SOLENOID VALVE
  - DISASSEMBLE SOLENOID VALVE (ZAXIS27U)
  - ASSEMBLE SOLENOID VALVE (ZAXIS27U)
  - DISASSEMBLE SOLENOID VALVE (ZAXIS30U, 35U)
  - ASSEMBLE SOLENOID VALVE (ZAXIS30U, 35U)
SECTION 3 UNDERCARRIAGE
- Swing Bearing
  - REMOVE AND INSTALL SWING BEARING
- Travel Device
  - REMOVE AND INSTALL TRAVEL DEVICE
  - DISASSEMBLE TRAVEL DEVICE
  - ASSEMBLE TRAVEL DEVICE
  - DISASSEMBLE TRAVEL MOTOR (ZAXIS27U)
  - ASSEMBLE TRAVEL MOTOR (ZAXIS27U)
  - DISASEMBLE BRAKE VALVE (ZAXIS27U)
  - ASSEMBLE BRAKE VALVE (ZAXIS27U)
  - DISASSEMBLE TRAVEL MOTOR (ZAXIS30U, 35U)
  - ASSEMBLE TRAVEL MOTOR (ZAXIS30U, 35U)
  - DISASSEMBLE AND ASSEMBLE BRAKE VALVE (ZAXIS30U, 35U)
  - MAINTENANCE STANDARD
- Center Joint
  - REMOVE AND INSTALL CENTER JOINT
  - DISASSEMBLE CENTER JOINT
  - ASSEMBLE CENTER JOINT
- Track Adjuster
  - REMOVE AND INSTALL TRACK ADJUSTER
  - DISASSEMBLE TRACK ADJUSTER
  - ASSEMBLE TRACK ADJUSTER
- Front Idler
  - REMOVE AND INSTALL FRONT IDLER
  - DISASSEMBLE AND ASSEMBLE FRONT IDLER
  - MAINTENANCE STANDARD
- Lower Roller
  - REMOVE AND INSTALL LOWER ROLLER
  - DISASSEMBLE AND ASSEMBLE LOWER ROLLER
  - MAINTENANCE STANDARD
- Track
  - REMOVE AND INSTALL TRACKS
  - MAINTENANCE STANDARD
SECTION 4 FRONT ATTACHMENT
- Front Attachment
  - HYDRAULIC CIRCUIT PRESSURE RELEASE PROCEDURE
  - REMOVE AND INSTALL FRONT ATTACHMENT
  - MAINTENANCE STANDARD
  - STANDARD DIMENSIONS FOR ARM AND BUCKET CONNECTION
- Cylinder
  - HYDRAULIC CIRCUIT PRESSURE RELEASE PROCEDURE
  - REMOVE AND INSTALL CYLINDER
  - DISASSEMBLE BOOM CYLINDER
  - ASSEMBLE BOOM CYLINDER
  - DISASSEMBLE ARM CYLINDER
  - ASSEMBLE ARM CYLINDER
  - DISASSEMBLE BUCKET CYLINDER
  - ASSEMBLE BUCKET CYLINDER
  - DISASSEMBLE BOOM SWING CYLINDER
  - ASSEMBLE BOOM SWING CYLINDER
  - DISASSEMBLE BLADE CYLINDER
  - ASSEMBLE BLADE CYLINDER
  - MAINTENANCE STANDARD
- SECTION 5 ENGINE
- General Information
  - GENERAL REPAIR INSTRUCTIONS
  - NOTES ON THE FORMAT OF THIS MANUAL
  - APPEARANCE
  - MAIN DATA AND SPECIFICATIONS
  - TIGHTENING TORQUE SPECIFICATIONS
  - ANGULAR NUT AND BOLT TIGHTENING METHOD
  - TIGHTENING TORQUE ON MAJOR COMPONENTS
  - GASKET LOCATION
  - MAINTENANCE
  - RECOMMENDED LUBRICATING OIL
- Engine
  - GENERAL VIEW OF ENGINE
  - DISASSEMBLY
  - INSPECTION AND REPAIR
  - REASSEMBLY
- Lubricating System
  - LUBRICATING OIL CIRCULATION SYSTEM DIAGRAM
  - OIL PUMP
- Cooling System
  - COOLING WATER CIRCULATION SYSTEM DIAGRAM
  - WATER PUMP
  - THERMOSTAT
- Fuel System
  - FUEL CIRCULATION SYSTEM DIAGRAM
  - GOVERNOR
  - NOZZLE HOLDER ASSEMBLY
- Troubleshooting
- Special Tools
- Service Standard
- Conversion Table
  - LENGTH
  - AREA
  - VOLUME
  - MASS
  - PRESSURE
  - TORQUE
  - TEMPERATURE
SERVICE MANUAL REVISION REQUEST FORM

INDEX
INDEX(W)
INTRODUCTION
SAFETY
SECTION 1 GENERAL INFORMATION
- Precautions for Disassembling and Assembling
  - PRECAUTIONS FOR DISASSEMBLING AND ASSEMBLING
- Tightening
  - TIGHTENING TORQUE SPECIFICATIONS
  - TORQUE CHART
  - PIPING JOINT
  - PERIODIC REPLACEMENT OF PARTS
- Painting
  - PAINTING
- Bleeding Air
  - BLEED AIR FROM HYDRAULIC OIL TANK
SECTION 2 UPPERSTRUCTURE
- Canopy
  - REMOVE AND INSTALL CANOPY
- Counterweight
  - REMOVE AND INSTALL COUNTERWEIGHT
- Pump Device
  - REMOVE AND INSTALL PUMP DEVICE
  - DISASSEMBLE PUMP DEVICE (ZAXIS27U)
  - ASSEMBLE PUMP DEVICE (ZAXIS27U)
  - DISASSEMBLE PUMP DEVICE (ZAXIS30U, ZAXIS35U)
  - ASSEMBLE PUMP DEVICE (ZAXIS30U, ZAXIS35U)
  - MAINTENANCE STANDARD
- Control Valve
  - REMOVE AND INSTALL CONTROL VALVE
  - DISASSEMBLE AND ASSEMBLE CONTROL VALVE
  - DISASSEMBLE AND ASSEMBLE BODY
  - DISASSEMBLE BOOM ANTI-DRIFT VALVE
  - ASSEMBLE BOOM ANTI-DRIFT VALVE
  - DISASSEMBLE AND ASSEMBLE SPOOL
  - DISASSEMBLE AND ASSEMBLE ARM REGENERATIVE VALVE, CHECK VALVE, AND ORIFICE
- Swing Device
  - REMOVE AND INSTALL SWING DEVICE
  - DISASSEMBLE SWING DEVICE
  - ASSEMBLE SWING DEVICE
  - DISASSEMBLE SWING MOTOR
  - ASSEMBLE SWING MOTOR
  - MAINTENANCE STANDARD
- Pilot Valve
  - REMOVE AND INSTALL PILOT VALVE
  - REMOVE AND INSTALL FRONT PILOT VALVE
  - REMOVE AND INASTALL TRAVEL PILOT VALVE
  - REMOVE AND INSTALL BLADE PILOT VALVE
  - REMOVE AND INSTALL BOOM SWING PILOT VALVE
  - DISASSEMBLE FRONT PILOT VALVE
  - ASSEMBLE FRONT PILOT VALVE
  - DISASSEMBLE TRAVEL PILOT VALVE
  - ASSEMBLE TRAVEL PILOT VALVE
  - DISASSEMBLE BOOM SWING PILOT VALVE
  - ASSEMBLE BOOM SWING PILOT VALVE
  - DISASSEMBLE BLADE PILOT VALVE
  - ASSEMBLE BLADE PILOT VALVE
- Solenoid Valve
  - REMOVE AND INSTALL SOLENOID VALVE
  - DISASSEMBLE SOLENOID VALVE (ZAXIS27U)
  - ASSEMBLE SOLENOID VALVE (ZAXIS27U)
  - DISASSEMBLE SOLENOID VALVE (ZAXIS30U, 35U)
  - ASSEMBLE SOLENOID VALVE (ZAXIS30U, 35U)
SECTION 3 UNDERCARRIAGE
- Swing Bearing
  - REMOVE AND INSTALL SWING BEARING
- Travel Device
  - REMOVE AND INSTALL TRAVEL DEVICE
  - DISASSEMBLE TRAVEL DEVICE
  - ASSEMBLE TRAVEL DEVICE
  - DISASSEMBLE TRAVEL MOTOR (ZAXIS27U)
  - ASSEMBLE TRAVEL MOTOR (ZAXIS27U)
  - DISASEMBLE BRAKE VALVE (ZAXIS27U)
  - ASSEMBLE BRAKE VALVE (ZAXIS27U)
  - DISASSEMBLE TRAVEL MOTOR (ZAXIS30U, 35U)
  - ASSEMBLE TRAVEL MOTOR (ZAXIS30U, 35U)
  - DISASSEMBLE AND ASSEMBLE BRAKE VALVE (ZAXIS30U, 35U)
  - MAINTENANCE STANDARD
- Center Joint
  - REMOVE AND INSTALL CENTER JOINT
  - DISASSEMBLE CENTER JOINT
  - ASSEMBLE CENTER JOINT
- Track Adjuster
  - REMOVE AND INSTALL TRACK ADJUSTER
  - DISASSEMBLE TRACK ADJUSTER
  - ASSEMBLE TRACK ADJUSTER
- Front Idler
  - REMOVE AND INSTALL FRONT IDLER
  - DISASSEMBLE AND ASSEMBLE FRONT IDLER
  - MAINTENANCE STANDARD
- Lower Roller
  - REMOVE AND INSTALL LOWER ROLLER
  - DISASSEMBLE AND ASSEMBLE LOWER ROLLER
  - MAINTENANCE STANDARD
- Track
  - REMOVE AND INSTALL TRACKS
  - MAINTENANCE STANDARD
SECTION 4 FRONT ATTACHMENT
- Front Attachment
  - HYDRAULIC CIRCUIT PRESSURE RELEASE PROCEDURE
  - REMOVE AND INSTALL FRONT ATTACHMENT
  - MAINTENANCE STANDARD
  - STANDARD DIMENSIONS FOR ARM AND BUCKET CONNECTION
- Cylinder
  - HYDRAULIC CIRCUIT PRESSURE RELEASE PROCEDURE
  - REMOVE AND INSTALL CYLINDER
  - DISASSEMBLE BOOM CYLINDER
  - ASSEMBLE BOOM CYLINDER
  - DISASSEMBLE ARM CYLINDER
  - ASSEMBLE ARM CYLINDER
  - DISASSEMBLE BUCKET CYLINDER
  - ASSEMBLE BUCKET CYLINDER
  - DISASSEMBLE BOOM SWING CYLINDER
  - ASSEMBLE BOOM SWING CYLINDER
  - DISASSEMBLE BLADE CYLINDER
  - ASSEMBLE BLADE CYLINDER
  - MAINTENANCE STANDARD
- SECTION 5 ENGINE
- General Information
  - GENERAL REPAIR INSTRUCTIONS
  - NOTES ON THE FORMAT OF THIS MANUAL
  - APPEARANCE
  - MAIN DATA AND SPECIFICATIONS
  - TIGHTENING TORQUE SPECIFICATIONS
  - ANGULAR NUT AND BOLT TIGHTENING METHOD
  - TIGHTENING TORQUE ON MAJOR COMPONENTS
  - GASKET LOCATION
  - MAINTENANCE
  - RECOMMENDED LUBRICATING OIL
- Engine
  - GENERAL VIEW OF ENGINE
  - DISASSEMBLY
  - INSPECTION AND REPAIR
  - REASSEMBLY
- Lubricating System
  - LUBRICATING OIL CIRCULATION SYSTEM DIAGRAM
  - OIL PUMP
- Cooling System
  - COOLING WATER CIRCULATION SYSTEM DIAGRAM
  - WATER PUMP
  - THERMOSTAT
- Fuel System
  - FUEL CIRCULATION SYSTEM DIAGRAM
  - GOVERNOR
  - NOZZLE HOLDER ASSEMBLY
- Troubleshooting
- Special Tools
- Service Standard
- Conversion Table
  - LENGTH
  - AREA
  - VOLUME
  - MASS
  - PRESSURE
  - TORQUE
  - TEMPERATURE
SERVICE MANUAL REVISION REQUEST FORM

INDEX
INDEX(T/M)
INTRODUCTION
SAFETY
SECTION 1 GENERAL
- Specifications
  - SPECIFICATIONS
  - WORKING RANGES
- Component Layout
  - MAIN COMPONENTS
  - ELECTRICAL SYSTEM
  - RELAYS
  - MONITOR AND SWITCHES
  - SOLENOID VALVE UNIT
- Component Specifications
  - ENGINE
  - ENGINE ACCESSORIES
  - HYDRAULIC COMPONENT
  - FILTER
  - ELECTRICAL COMPONENT
SECTION 2 SYSTEM
- Hydraulic System
  - OUTLINE
  - PILOT CIRCUIT
  - MAIN CIRCUIT
- Electrical System
  - OUTLINE
  - POWER CIRCUIT (KEY SWITCH OFF)
  - INDICATOR LIGHT CHECK CIRCUIT/ ACCESSORY CIRCUIT (KEY SWITCH : ON)
  - PREHEATING CIRCUIT (KEY SWITCH:ON)
  - STARTING CIRCUIT (KEY SWITCH : START POSITION)
  - CHARGING CIRCUIT (KEY SWITCH : ON)
  - ENGINE STOP CIRCUIT (KEY SWITCH OFF)
SECTION 3 COMPONEN OPERATION
- Pump Device
  - OUTLINE
  - MAIN PUMP (P1, P2)
  - MAIN PUMP (P3), PILOT PUMP (P4) (ZAXIS30U, 35U)
  - PILOT PUMP (P4) (ZAXIS27U)
  - HORSE POWER CONTROL OPERATION
- Swing Device
  - OUTLINE
  - SWING MOTOR
  - PARKING BRAKE
  - VALVE UNIT
  - SWING REDUCTION GEAR
- Control Valve
  - OUTLINE
  - HYDRAULIC CIRCUIT
  - ARM REGENERATIVE VALVE
  - BOOM ANTI-DRIFT VALVE
  - FLOW COMBINER VALVE
  - FLOW COMBINING SELECTOR VALVE
  - MAIN RELIEF VALVE
  - OVERLOAD RELIEF VALVE
  - MAKE-UP VALVE
- Pilot Valve
  - OUTLINE
  - OPERATION
- Travel Device
  - OUTLINE
  - TRAVEL MOTOR
  - PARKING BRAKE
  - TRAVEL BRAKE VALVE
  - TRAVEL REDUCTION GEAR
- Others (Upperstructure)
  - SOLENOID VALVE UNIT
  - PILOT RELIEF VALVE
- Others (Undercarriage)
  - SWING BEARING
  - CENTER JOINT
  - TRACK ADJUSTER
SECTION 4 OPERATIONAL PERFORMANCE TEST
- Introduction
  - OPERATIONAL PERFORMANCE TEST
  - PREPARATION FOR PERFORMANCE TESTS
- Standard
  - OPERATIONAL PERFORMANCE STANDARD
- Engine Test
  - ENGINE SPEED
  - ENGINE COMPRESSION PRESSURE
  - VALVE CLEARANCE
  - NOZZLE CHECK
  - INJECTION TIMING
- Excavator Test
  - TRAVEL SPEED
  - TRACK REVOLUTION SPEED
  - MISTRACK CHECK
  - TRAVEL MOTOR LEAKAGE
  - SWING SPEED
  - SWING FUNCTION DRIFT CHECK
  - SWING MOTOR LEAKAGE
  - MAXIMUM SWINGABLE SLANT ANGLE
  - SWING BEARING PLAY
  - HYDRAULIC CYLINDER CYCLE TIME
  - DIG FUNCTION DRIFT
  - CONTROL LEVER OPERATING FORCE
  - CONTROL LEVER STROKE
  - COMBINED BOOM RAISE/SWING FUNCTION CHECK
- Component Test
  - PRIMARY PILOT PRESSURE
  - SECONDARY PILOT PRESSURE
  - MAIN RELIEF VALVE SET PRESSURE
  - OVERLOAD RELIEF VALVE SET PRESSURE
  - PUMP DRIVING TORQUE
  - SWING MOTOR DRAINAGE
  - TRAVEL MOTOR DRAINAGE
- Adjustment
  - ENGINE SPEED CONTROL LEVER ADJUSTMENT
SECTION 5 TROUBLESHOOTING
- Diagnosing Procedure
  - INTRODUCTION
  - DIAGNOSING PROCEDURE
- Troubleshooting A
  - TROUBLESHOOTING A PROCEDURE (DIAGNOSIS OF MACHINE BY SYMPTOM)
  - ENGINE SYSTEM TROUBLESHOOTING
  - ACTUATOR OPERATING SYSTEM TROUBLESHOOTING
  - FRONT ATTATCHMENT SYSTEM TROUBLESHOOTING
  - SWING SYSTEM TROUBLESHOOTING
  - TRAVEL SYSTEM TROUBLESHOOTING
  - BLADE SYSTEM TROUBLESHOOTING
  - BOOM SWING SYSTEM TROUBLESHOOTING
  - HOW TO LOWER BOOM WHEN ENGINE STOPS
- Troubleshooting B
  - TROUBLESHOOTING B PROCEDURE (DIAGNOSIS OF MONITOR)
  - MALFUNCTION OF COOLANT TEMPERATURE GAUGE
  - MULFUNCTION OF FUEL GAUGE
  - MALFUNCTION OF ALTERNATOR INDICATOR
  - MALFUNCTION OF ENGINE OIL PRESSURE INDICATOR
  - MALFUNCTION OF OVERHEAT INDICATOR
  - MALFUNCTION OF FUEL LEVEL INDICATOR
  - MALFUNCTION OF BUZZER
  - MALFUNCTION OF HOUR METER
- Electrical System Inspection
  - PRECAUTIONS FOR INSPECTION AND MAINTENANCE
  - FUSE CONTINUITY TEST
  - BATTERY VOLTAGE CHECK
  - VOLTAGE CHECK
  - CONTINUITY CHECK
SERVICE MANUAL REVISION REQUEST FORM

INDEX
INDEX(T/M)
INTRODUCTION
SAFETY
SECTION 1 GENERAL
- Specifications
  - SPECIFICATIONS
  - WORKING RANGES
- Component Layout
  - MAIN COMPONENTS
  - ELECTRICAL SYSTEM
  - RELAYS
  - MONITOR AND SWITCHES
  - SOLENOID VALVE UNIT
- Component Specifications
  - ENGINE
  - ENGINE ACCESSORIES
  - HYDRAULIC COMPONENT
  - FILTER
  - ELECTRICAL COMPONENT
SECTION 2 SYSTEM
- Hydraulic System
  - OUTLINE
  - PILOT CIRCUIT
  - MAIN CIRCUIT
- Electrical System
  - OUTLINE
  - POWER CIRCUIT (KEY SWITCH OFF)
  - INDICATOR LIGHT CHECK CIRCUIT/ ACCESSORY CIRCUIT (KEY SWITCH : ON)
  - PREHEATING CIRCUIT (KEY SWITCH:ON)
  - STARTING CIRCUIT (KEY SWITCH : START POSITION)
  - CHARGING CIRCUIT (KEY SWITCH : ON)
  - ENGINE STOP CIRCUIT (KEY SWITCH OFF)
SECTION 3 COMPONEN OPERATION
- Pump Device
  - OUTLINE
  - MAIN PUMP (P1, P2)
  - MAIN PUMP (P3), PILOT PUMP (P4) (ZAXIS30U, 35U)
  - PILOT PUMP (P4) (ZAXIS27U)
  - HORSE POWER CONTROL OPERATION
- Swing Device
  - OUTLINE
  - SWING MOTOR
  - PARKING BRAKE
  - VALVE UNIT
  - SWING REDUCTION GEAR
- Control Valve
  - OUTLINE
  - HYDRAULIC CIRCUIT
  - ARM REGENERATIVE VALVE
  - BOOM ANTI-DRIFT VALVE
  - FLOW COMBINER VALVE
  - FLOW COMBINING SELECTOR VALVE
  - MAIN RELIEF VALVE
  - OVERLOAD RELIEF VALVE
  - MAKE-UP VALVE
- Pilot Valve
  - OUTLINE
  - OPERATION
- Travel Device
  - OUTLINE
  - TRAVEL MOTOR
  - PARKING BRAKE
  - TRAVEL BRAKE VALVE
  - TRAVEL REDUCTION GEAR
- Others (Upperstructure)
  - SOLENOID VALVE UNIT
  - PILOT RELIEF VALVE
- Others (Undercarriage)
  - SWING BEARING
  - CENTER JOINT
  - TRACK ADJUSTER
SECTION 4 OPERATIONAL PERFORMANCE TEST
- Introduction
  - OPERATIONAL PERFORMANCE TEST
  - PREPARATION FOR PERFORMANCE TESTS
- Standard
  - OPERATIONAL PERFORMANCE STANDARD
- Engine Test
  - ENGINE SPEED
  - ENGINE COMPRESSION PRESSURE
  - VALVE CLEARANCE
  - NOZZLE CHECK
  - INJECTION TIMING
- Excavator Test
  - TRAVEL SPEED
  - TRACK REVOLUTION SPEED
  - MISTRACK CHECK
  - TRAVEL MOTOR LEAKAGE
  - SWING SPEED
  - SWING FUNCTION DRIFT CHECK
  - SWING MOTOR LEAKAGE
  - MAXIMUM SWINGABLE SLANT ANGLE
  - SWING BEARING PLAY
  - HYDRAULIC CYLINDER CYCLE TIME
  - DIG FUNCTION DRIFT
  - CONTROL LEVER OPERATING FORCE
  - CONTROL LEVER STROKE
  - COMBINED BOOM RAISE/SWING FUNCTION CHECK
- Component Test
  - PRIMARY PILOT PRESSURE
  - SECONDARY PILOT PRESSURE
  - MAIN RELIEF VALVE SET PRESSURE
  - OVERLOAD RELIEF VALVE SET PRESSURE
  - PUMP DRIVING TORQUE
  - SWING MOTOR DRAINAGE
  - TRAVEL MOTOR DRAINAGE
- Adjustment
  - ENGINE SPEED CONTROL LEVER ADJUSTMENT
SECTION 5 TROUBLESHOOTING
- Diagnosing Procedure
  - INTRODUCTION
  - DIAGNOSING PROCEDURE
- Troubleshooting A
  - TROUBLESHOOTING A PROCEDURE (DIAGNOSIS OF MACHINE BY SYMPTOM)
  - ENGINE SYSTEM TROUBLESHOOTING
  - ACTUATOR OPERATING SYSTEM TROUBLESHOOTING
  - FRONT ATTATCHMENT SYSTEM TROUBLESHOOTING
  - SWING SYSTEM TROUBLESHOOTING
  - TRAVEL SYSTEM TROUBLESHOOTING
  - BLADE SYSTEM TROUBLESHOOTING
  - BOOM SWING SYSTEM TROUBLESHOOTING
  - HOW TO LOWER BOOM WHEN ENGINE STOPS
- Troubleshooting B
  - TROUBLESHOOTING B PROCEDURE (DIAGNOSIS OF MONITOR)
  - MALFUNCTION OF COOLANT TEMPERATURE GAUGE
  - MULFUNCTION OF FUEL GAUGE
  - MALFUNCTION OF ALTERNATOR INDICATOR
  - MALFUNCTION OF ENGINE OIL PRESSURE INDICATOR
  - MALFUNCTION OF OVERHEAT INDICATOR
  - MALFUNCTION OF FUEL LEVEL INDICATOR
  - MALFUNCTION OF BUZZER
  - MALFUNCTION OF HOUR METER
- Electrical System Inspection
  - PRECAUTIONS FOR INSPECTION AND MAINTENANCE
  - FUSE CONTINUITY TEST
  - BATTERY VOLTAGE CHECK
  - VOLTAGE CHECK
  - CONTINUITY CHECK
SERVICE MANUAL REVISION REQUEST FORM

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Airman (Hitachi) Zaxis 27U, 30U, 35U Excavator Pdf Technical and Workshop Manual

Airman (Hitachi) Zaxis 27U, 30U, 35U Excavator Pdf Technical and Workshop Manual

Airman (Hitachi) Zaxis 27U, 30U, 35U Excavator Pdf Technical and Workshop Manual