New Holland TL 70A / TL 80A / TL 90A / TL 100A tractors, repair e-manual

Content

General guidelines

• General instructions
• Safety regulations
• Consumables

Engine

• General specifications
• Fuel system data
• Crankshaft and engine block data
• Connecting rod data
• Piston data
• Timing gear data
• Cylinder head data
• Tightening Torques
• Tools
• 4-cylinder engine
• Engine cooling and lubrication diagrams
• Component parts of cylinder head
• Component parts of additional counterweights
• Engine removal-installation
• Engine disassembly-assembly
• Functional testing on low engine oil pressure indicator
• Crankshaft rear seal
• Bosch injection pump
• Coolant pump
• Thermostat valve
• Radiato
• Coolant pump drive bel

Clutch

• Tightening torques
• Troubleshooting
• Checks and measurements
• Adjustments
• Removal-installation
• Clutch disengagement levers

Transmissions

• Transmission and range gear
• Tightening torques
• Cross-sectional views
• Description and operation
• Transmission longitudinal cutaway section view

Reverser

• Tightening torques
• Tools
• Cross-sectional views
• Description and operation
• Disassembly-assembly
• Transmission longitudinal cutaway section view

Dual command (2 speed power shift)

• Tightening torques
• Tools
• Cross-sectional views
• Description and operation
• Troubleshooting
• Removal-installation
• Disassembly-assembly
• Control rod
• Working pressure test
• Transmission longitudinal cutaway section view

Reverser and creeper

• Tightening torque
• Tools
• Cross-sectional views
• Description and operation
• Troubleshooting
• Replacing clutch casing
• End float Transmission longitudinal cutaway section view

Power shuttle transmission with dual command

• Tightening torque
• Cross-sectional views
• Description and operation
• Range and gear lever position sensor
• Disassembly-assembly
• Calibrations
• Transmission fault codes

DRive lines

• Tightening torque
• Tools
• Cross-sectional views
• Description and operation
• Removal-installation
• Disassembly-assembly
• Removal-installation

Front mechanical transmission

• Tightening torques
• Cross-sectional views
• Description and operation
• Removal-installation
• Disassembly-assembly
• Overhaul
• Replacing wheel hub
• Replacing steering knuckle pins and bearings
• Stub axle

Rear mechanical transmission

• Tightening torques
• Tools
• Cross-sectional views
• Description and operation
• Troubleshooting
• Removal-installation
• Disassembly-assembly
• Gearbox driving shaft end float adjustment
• Differential lock engagement sleeve position
• Tapered roller
• Bevel crown wheel bearings
• Differential pinion and side gear backlash
• Differential lock pedal
• Final drive

Mechanical power take-off

• Tools
• Tightening torques
• Cross-sectional views
• Description and operation
• Troubleshooting
• Removal-installation
• Disassembly-assembly

Electro-hydraulic power take-off

• Tools
• Tightening torques
• Cross-sectional views
• Description and operation
• Additional PTO controls
• Troubleshooting
• Power take-off brake

Brakes

• Tightening torques
• Cross-sectional views
• Tools
• Description and operation
• Hydraulic diagram
• Pilot valve operation
• Parking handbrake travel
• Brake casing
• Service brake circuit air bleeding
• Brake pump
• Brake pedals

Trailer air brakes

• Tightening torques
• Cross-sectional views
• Tools
• Description and operation
• Single trailer brake circuit components
• Troubleshooting
• Pressure tests

Rear mechanical hydraulic lift

• Tightening torques
• Tools
• Cross-sectional views
• Description and operation
• Troubleshooting
• Hydraulic lift pump
• Pump seal kit
• Lift

Open centre system auxiliary control valves

• Tools
• Tightening torques
• Cross-sectional views
• Description and operation
• Disassembly-assembly
• Rod hardening test
• Flow control valve

Auxiliary control valves (BOSCH)

• Tools
• Tightening torques
• View of BOSCH auxiliary control valve components
• Description and operation

Trailer brake auxiliary control valve

• Cross-sectional views
• Description and operation
• Troubleshooting

Supplementary cylinder

• Cross-sectional views
• Description and operation
• Removal-installation

Electronic lift

• Precautions
• Tightening torques
• Tools
• View of electronic lift components
• Electronic lift control layout
• Description and operation
• Fault code decoding
• Diagnostics
• Lift electronic control unit
• Lift arm potentiometer replacement
• Calibration of the electronic lift arms potentiometer
• Hydraulic control valve

Ventral control valves for walvoil-type open centre system

• Ventral control valve specifications
• Tightening torques
• Ventral control valve
• Control valve circuit
• Hydraulic diagram
• Description and operation

Front loader

• Specifications
• Maximum permissible front axle weights
• Tightening torques
• Diagrams
• Ventral control valve
• System switching full and dipped beam headlights on lights fitted on handrails
• Ballasting the tractor for front loader operation
• Loader general description
• Loader installation − removal
• Implement installation − removal
• Lift arm types and functions
• Smooth ride control
• Hydraulic functions and flow diagram of loaders
• Hydraulic components
• Troubleshooting

Steering

• Tightening torques
• View of hydraulic pump components
• View of hydrostatic steering control valve components
• Description and operation
• Fault diagnosis
• Removal−installation
• Disassembly−assembly
• Pressure relief valve testing
• Power steering pump
• Steering cylinder

Axles and wheels

• Front wheel track diagram
• Cross−sectional views
• Tightening Torques
• Tools
• Fault diagnosis
• Wheel axle hub
• Front axle
• Stub axle hub

Subsidiary parts

• Safety regulations
• Tools
• Conditioning system components
• Warnings for air conditioning system
• Cab controls
• Air−conditioning system
• Leak detector
• Troubleshooting
• Fault
• Compressor drive belt tension
• Compressor
• Heating and air conditioning systems piping
• Condenser
• Heater unit
• Air−conditioner evaporato
• Electric fan

Instruments summary

• Control pane
• Analog/digital instruments
• Transmitters, sensors and switches

Components

• Introduction
• Dashboard controls
• Right mudguard controls
• In−cab Controls
• External controls
• Technical data
• Tightening torques
• Description and operation
• Fault diagnosis
• Starting and recharging circuit
• System testing

Charging system

• Technical data
• Tightening torques
• Description and operation
• System testing and troubleshooting
• Removal, installation and overhaul
• Alternator components
• Electronic voltage regulator

Battery

• Technical data
• Description and operation
• Removal−installation
• Battery testing
• Battery problems

Electrical circuits

• Maxi power fuses box
• Power sockets
• Operator safety circuit
• Grid heater
• Electronic flasher
• Ground location points
• How to use the linear wiring diagrams
• Symbols used in electrical circuits
• Electric wire colour code
• Wiring diagram components
• Power shuttle
• Dual command
• Control unit input − output diagrams
• Connectors
• List of connectors

Components testing

• Tests on switches, sensors and pressure switches
• Removal-installation wind- screen wiper motor

Error codes

• Introduction
• Special attachments
• Repairing the wiring
• Digital multimeter
• Electrical test procedures
• Circuit components
• CAN system
• Control unit location
• Error code display
• Error codes lists
• Error codes charts
• Calibration U-codes
• Electronically controlled hydraulic lift (EDC)

HH menu and calibrations

Bodywork and driving position

• Bonnet
• Platform
• Drivers seat
• Cab
• Door
• Glued cab windows
• Cab rear window
• Seal on upright
• Fixed padding
• Hydraulic control lever guard
• Cab ceiling fittings

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