This 754-page Valtra service manual covers the M and T Series tractors: M120, M130 and M150, plus T120 through T190. The electrical section alone runs from page 119 to 392 and carries the wiring diagrams for the whole range, which is what most of these repairs come down to. Around it you get the engine (cylinder block, head and valves), the power transmission with its clutch, gearbox and reverse shuttle, the brake system with its technical data, the steering and front axle, the frame and wheels, and the hydraulic system with its pressures and settings.
What's Inside This Manual
| System | Pages | Key Topics |
|---|
| General | 3-36 | Layout, Repairs, Maintenance |
| Engine | 37-118 | Cylinder Block, Cylinder Head and Valve Mechanism, Crankshaft Engine, Timing Gears, Lubrication System, Cooling System |
| Electrical | 119-392 | Safety Precautions for the Electrical System, Fuses and Relays, Sensors, Control Unit Connectors, LCD Display and Diagnostics, Fault Memory and Service Modes |
| Power Transmission | 393-518 | Clutch, Description, Gearbox, Quick-Shift Gear, Reverse Shuttle and 4WD Clutch, Final Drives |
| Brake System | 519-542 | Technical Data, Description, Pressure Air Brakes for Trailer, Parking Brake Mechanism, Adjusting Foot Brakes, Adjusting Parking Brake |
| Steering & Front Axle | 543-682 | Steering System, Description, Steering Valve, Priority Valve, Steering Cylinder, Powered Front Axle, Differential Lock |
| Frame & Wheels | 683-696 | Frame Dimensions, Front Weight Support and Frame, Wheels, Tyre Loadings and Pressures, Track Widths, Wheel Nuts, Tightening Torque, Twin-Mounted Wheels |
| Hydraulic System | 697-754 | Technical Data of Hydraulic System, High Pressure Circuit, Low Pressure Hydraulics, Hydraulic Valves in the Working Hydraulics, Power Lift Hydraulics, Description, Lifting Cylinder |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Wheel Nut Torque | 550 Nm | p. 36 |
| Thermostat Opening Temperature | 83 °C | p. 118 |
| Battery Voltage | 12 V | p. 119 |
| TC1 Proportional Valve Resistance | 7-9 ohms | p. 392 |
| Sigma Power Engaging Torque | 250 Nm ± 25 Nm | p. 518 |
| Brake Pedal Free Travel (pedals latched together) | 70-80 mm | p. 542 |
| Selector Fork Rail Thread Sealant | Loctite 242 | p. 518 |
| PTO Gearbox Sealant | Hylosil RTV Grade 102 Black | p. 518 |
| Reverse Shuttle Gearbox Sealant | Hylosil RTV Grade 102 Black | p. 518 |
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