New Holland Wheel Loader LW270 LW270.B service manual

Description New Holland Wheel Loader LW270 LW270.B service manual

New Holland Wheel Loader LW270, LW270B pdf service & repair manual

Technical data, specifications, troubleshooting, maintenance, electrical diagrams, hydraulic schematics, disassembly, assembly, removal, installation and other information

MANUAL CONTENT:
SAFETY RULES
SPECIFICATIONS
FLUIDS AND CAPACITY TABLE
UNITS OF MEASURE USED IN THE MANUAL
TIGHTENING TORQUES

ENGINE
IDENTIFICATION DATA
GENERAL SPECIFICATIONS OF SERIES “M11” ENGINE
ENGINE SUPPORTS
DIAGRAMS OF SERIES “M11” ENGINES

TRANSMISSION
GENERAL DESCRIPTION
TORQUE CONVERTER - TRANSMISSION
TORQUE CONVERTER
TRANSMISSION - TORQUE CONVERTER PUMP
Power train diagram
Transmission control valve
AUTOMATIC TRANSMISSION CONTROL SYSTEM
TRANSMISSION SELECTOR
OIL CIRCUIT
DISASSEMBLY TRANSMISSION
REASSEMBLY TRANSMISSION
TROUBLESHOOTING GUIDE
MAINTENANCE REFERENCE VALUES
TIGHTENING TORQUES
PROP SHAFTS
FRONT AND REAR AXLES
Description of axles
Description of differential
Description of final drives
DISASSEMBLY OF AXLES
REASSEMBLY OF AXLES
TROUBLESHOOTINGS
STANDARD VALUES FOR MAINTENANCE
TIGHTENING TORQUE VALVE FOR MAIN BOLTS
WHEELS

BRAKES SYSTEM
GENERAL DESCRIPTION
OPERATION
Operation conditions
DISC BRAKE
BRAKE PEDAL VALVE
Operation of circuit separation valve in the brake group
BRAKES/POWER SYSTEM PUMP
PARKING BRAKE CONTROL VALVE
PARKING BRAKE
Procedure for manual disengagement
Operation of discs parking brake
Disengagement of brake
OTHER COMPONENTS
Service brakes accumulator
Check valve
HYDRAULIC CONNECTIONS OF BRAKE PEDAL VALVE
TROUBLESHOOTING - TESTS
Test of brakes actuation pressure
Setting of minimum and maximum accumulators recharge pressure
Inspection of parking brake engagement
Inspection of accumulator pre-charge
Instructions for the pre-charging of the service brakes accumulator
Air bleeding of brakes system
Check of brake discs wear

STEERING SYSTEM
GENERAL DESCRIPTION
STEERING GROUP
STEERING VALVE
STEERING SYSTEM PUMP
STEERING VALVE CONTROL LINKAGE
Linkage installation procedure
Operation
STEERING CYLINDERS
Removal
Disassembly and reassembly
Installation
EMERGENCY STEERING CIRCUIT
Components of the emergency steering

BUCKET BOOMS AND FRAME
GENERAL DESCRIPTION
Bucket
Bucket positioner device
Boom kick-out setting
FRAME
Frame centre pivoting
BUCKET ABUTTING

HYDRAULIC SYSTEM
GENERAL DESCRIPTION
HYDRAULIC SYSTEM PUMP
By-pass valve
Inspection and repair of equipment pump
EQUIPMENT CONTROL VALVE
General description
Main pressure relief valve
Safety and anti-cavitation valves
CONTROL VALVE CONTROLS
Control valve hydraulic control
Supplementary hydraulic function (variant)
HYDRAULIC OIL RESERVOIR
CYLINDERS
Boom cylinders
Bucket tilt cylinder
LOAD TRAVEL STABILISER L.T.S. (variant)
Description
Discharging the accumulators
L.T.S. hydraulic diagram
Functional tests of L.T.S. system
Check of L.T.S. accumulator pre-charge
Instructions for the resetting of the accumulator pre-charge

ELECTRICAL SYSTEM
SAFETY RULES
GENERAL LAY-OUT OF ELECTRICAL SYSTEM
LOGIC BOARD AND CAB CONNECTIONS
Connections - Relays - Timers
Fuses table
CAB INSTRUMENTS CLUSTER
Indicators on instrument cluster
SWITCH PANEL
TRANSMISSION CONTROL SELECTOR
ATC ELECTRONIC UNIT
CONNECTORS
COLD START AND LINK FUSES
STARTER SWITCH
MAIN SWITCH
SOLENOID SWITCHES
PRESSURE SWITCHES-SENSOR-SWITCHES
ACOUSTIC TRANSDUCERS
ALTERNATOR
MACHINE GROUPS ELECTRIC DIAGRAMS

CAB
GENERAL DESCRIPTION
WINDSCREEN WIPERS AND WASHERS
HEATER
GLASSES
Characteristics
Disassembly and assembly
REPAIR
Cab (removal/installation)
AIR CONDITIONING UNIT
Operating istructions
Technical data
Service precautions
Tool connections
Discharging
Refrigerant charging
Leak inspection
TROUBLESHOOTING