Valtra T121 / T151 / T171 / T191 tractor, repair e-manual

Content

General information

• T1 series tractor (c models)
• T1 series tractor (h models)
• T1 series tractor (LS models)
• T1c models, construction
• T1h models, construction
• T1LS models, construction
• Autocontrol systems
• T1 series, dimensions
• General information about T1 series tractor

Layout

• Supplements for service manual
• Layout of service manual
• Code designations
• How to find electrical components in the service manual

Repair

• General instructions for repair
• Tightening torques

Maintenance

• Valtra service
• Filling table
• Oil recommendations and fuel requirements
• Grease
• Maintenance schelude

Engine

• Technical data and specifications
• Construction of engine
• Cylinder block
• Flywheel housing
• Cylinder head
• Valve mechanism
• Crank mechanism
• Timing gears
• Lubrications sytem
• Cooling system
• Inlet and exhaust system
• Special tools
• Work instructions

Fuel system

• Technical data
• High pressure pump Bosch CP1
• Injector
• Electrical equipment: Wiring
• Electronic engine management, components
• EC unit
• Angle sensor, accelerator pedal
• Grid heater control
• Starting control
• Fault finding Measuring the fuel feed pressure
• Measuring EC unit sensors
• Battery and starter motor
• Special tools
• Work instructions

Cooling system

• Technical specifications
• Quality requirements of coolant
• Thermostat
• Special tools
• Reconditioning of coolant pump

Electrical system

• Technical data
• Fuses and relays
• Trailer socket
• Headlight adjustment
• Electrical equipment, cab
• Electrical equipment, front housing
• Electrical equipment, frame
• Electrical equipment, engine
• CAN bus
• Fault finding
• Wiring diagram

Clutch

• Technical specification
• Clutch, description
• Hydraulic clutch pedal
• HiShift (optional)
• Cylinder (HiShift)
• Drive plate
• Fault finding
• Checking clutch disc and clutch assembly
• Special tools
• Hydraulic clutch release mechanism

Gearbox

• Technical data
• Gearbox construction and function (Classic)
• Gearbox construction and function (HiTech)
• Gearbox construction and function (LS)
• Gearbox differences
• Gear ratios
• Transmission structure
• Layshaft
• Input shaft
• Bevel pinion shaft
• Transmission shaft
• Ground speed PTO shaft
• Gear levers, Classic
• Gear levers, HiTech
• Gear levers, LS
• Gear shifting system (LS)
• Synchronization
• Function of the range gear shifting (LS)
• Semi-automatic range gear wiring (LS)
• Differential
• Selector levers
• Selector forks and selector fork rails
• Fault finding
• Sensors (LS)
• Solenoid valves (LS)
• Special tools
• Gear shift lever mechanism
• Disassembling gearbox
• Removing shafts
• Assembling gearbox
• Installing shafts
• Fitting differential
• Fitting 4WD clutch drum
• Fitting and adjusting selector forks
• Fitting side cover
• Fitting pump, suction pipes and suction strainer housing
• Reconditioning differential
• Removal/installation of the gear lever cover
• Gear change mechanism
• Gear lever cover
• Removal of the gear lever cover
• Installation of the gear lever cover
• Calibration principle of semi-automatic range gear (LS)
• Forcing the semi-automatic range gear on (LS)

Powershift gear, power shuttle and 4WD clutch

• Powershift gear (Syncro)
• Function of the DPS (Syncro)
• Powershift gear (HiTech, LS)
• Function of the DPS (HiTech)
• Lubrication oil supply (Syncro)
• Lubrication oil supply (HiTech)
• Lubrication oil supply (LS)
• Power shuttle unit (Syncro)
• Power shuttle unit (HiTech, LS)
• FNR-lever (HiTech, LS)
• Power shuttle engagement
• Engaging pressure of the shuttle clutches F and R
• 4WD clutch (Syncro)
• 4WD clutch (HiTech, LS)
• Valve block (Syncro)
• Lock valve (Syncro)
• Valve block (HiTech / LS)
• Valve block function (HiTech / LS)
• Valve block for Powershift and shuttle unit (HiTech)
• Valve block for Powershift and shuttle unit (LS)
• Fault finding
• Sensors
• FNR-lever
• Proportional valves
• Wiring
• Powershift control (HiTech)
• Powershift control (LS)
• Shuttle control (HiTech)
• Shuttle control (LS)
• 4WD control (Classic / HiTech)
• 4WD control (LS)
• Differential lock control (Classic / HiTech)
• Differential lock control (LS)
• Special tools
• Reconditioning the Powershift gear
• Removing the Powershift gear
• Reconditioning the multi-disc clutches C1 and C2 for the Powershift gear
• Reconditioning and fitting the multi-disc clutch C3 and the planetary gear for the Powershift gear
• Reconditioning shuttle
• Removing shuttle
• Reconditioning clutch for forward driving
• Reconditioning reverse drive clutch
• Fitting shuttle
• 4WD clutch
• Disassembling 4WD multi-disc clutch
• Assembling 4WD multi-disc clutch
• Changing seals of the 4WD shaft

Final drives

• Technical data
• Final drives, description
• Final drives 650
• Final drives 700
• Faul finding
• Sensors
• Special tools
• Reconditioning final drives

Power take-off

• Technical data
• Markings on the PTO units
• Power take-off, description
• Heavy Duty PTO
• PTO cluch and brake
• PTO clutch and brake (Heavy Duty PTO)
• Proportional ground speed PTO
• Engagement of the PTO (Syncro)
• Rear PTO control (Syncro)
• Engagement of the PTO (Hitech)
• Rear PTO control (HiTech)
• Engagement of the PTO (LS)
• Rear PTO control (LS)
• PTO shaft
• Ground speed PTO shaft
• Fault finding
• Sensors
• Switches
• Magnetic valves
• Special tools
• Reconditioning PTO
• Changing cassette seal of PTO shaft

Brake system

• Technical data
• Brake system, construction
• Brake cylinders
• Brake mechanism (with final drives 650)
• Brake mechanism (with final drives 700)
• Brake cooling system (LS)
• Maintenance
• Bleeding brake system (with final drives 650)
• Bleeding brake system (with final drives 700)
• Fault finding
• Switches
• Solenoid valve
• Work instructions
• Changing brake discs
• Adjusting foot brakes
• Changing brake housing
• Adjusting master cylinder pushrod clearance

Parking brake

• Parking brake
• Fault finding from parking brake system

Trailer brake system

• Fluid brake valve of the trailer
• Trailer air pressure brakes
• Maintenance, trailer air pressure brakes

Steering system

• Technical data
• Steering hydraulics c/h
• Steering hydraulics LS
• Priority valve
• Steering valve
• Fault tracing chart
• Special tools
• Reconditioning steering system
• Priority valve OLS 120
• Steering cylinder adjustment

Air suspension of front axle

• General of air suspension of front axle
• Levelling valve
• Overflow valve
• Other components
• Chock absorbers
• Rubber bellows

Powered front axle

• Technical data
• Powered front axle, description
• Front axle
• Planetary gear
• Differential
• Differential adjustments
• Locally prepared tools
• Axle housing and central pivot bearing brackets
• Planetary reduction
• Knuckle housing
• Differential unit
• Removing the steering cylinder

TwinTrac

• Hydraulic components
• Steering column
• Electrical system

Frame

• Fixing points for implements
• Front weight support and frame

Cab

• Cab
• Cab suspension
• Cab heater
• Semi-active cab suspension (AutoComfort)
• Fault finding
• Sensors
• Fault diagnostics of the AutoComfort system
• AutoComfort system, testing
• AutoComfort system, wiring
• AutoComfort system work instructions
• AutoComfort system components
• Calibrating the AutoComfort suspension
• Fitting / removing the locking pins for the front axle

Instruments

• Instrument panel Agroline
• Instrument panel Proline
• Connectors of the instrument
• Fault codes
• Sensors of the Agroline instrument

Air conditioner

• Technical data
• Air conditioner construction
• Operating principle
• Circulation of the refrigerant
• Compressor
• Conderser
• Evaporator
• Dryer
• Expansion valve
• Service table for air conditioning system
• Amount of the oil in air conditioning system
• Recovery, recycling and rechanging of refrigerant
• Air conditioning system test run
• Air conditioning system temperature test
• Trouble shooting with pressure gauges

Hydraulics

• Technical data
• Hydraulic system, T121c-T171c
• Hydraulic system, T121h-T191h
• Hydraulic system, T151eLS-T191eLS
• Hydraulic pump and suction filter (T121c-T171c, T121h-T191h)
• Variable displacement pump, Bosch A10VO DFR1 (T151eLS-T191LS)
• LS-pressure
• Suction system (T151eLS-T191LS)
• Suction strainer and ejector
• Suction system valve block
• Hydraulic pump drive gears and lubrication
• Maintenance
• Measuring pressures
• Pumps and pipes, fault tracing
• Removing the pump (T121c-T171c, T121h-T191h)
• Fitting the pump
• Adjusting the pump
• Adjusting the variable displacement pump

Working hydraulics

• Description (T121c-T171c, T121h-T191c)
• Description (T151eLS-T191LS)
• Valves for auxiliary hydraulics (T121c-T171c, T121h-T191h)
• Valves for auxiliary hydraulics (T151eLS-T191LS)
• Return oil connection for auxiliary hydraulics
• Combinations of auxiliary hydraulic valves (T151eLS-T191LS)

Power lift

• Power lift hydraulics, description
• Power lift control valve (T121c-T171c, T121h-T191h)
• Power lift control valve (T151eLS-T191LS)
• Lifting cylinders
• Electrical system
• Front power lift
• Hydraulic trailer hitch releaser
• Checking functions of power lift
• Power lift wiring
• Checking switch panel of power lift
• Checking control valve and its solenoid valves
• Adjusting position sensor
• Power lift control valve (T121c-T171c, T121h-T191h)
• Power lift control valve (T151eLS-T191LS
• Lifting cylinders
• 3-point linkage and trailer hitch

Special tools (ETV)

Locally prepared tools (ET)

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