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This is the factory workshop manual for the SAME Rubin 120, Rubin 135, and Rubin 150 tractors, powered by the 1000.6 WT and 1000.6 WTI diesel engines. It runs 812 pages of repair, overhaul, and diagnostic procedures written for service technicians.Coverage runs the full machine: the open-centre and load-sensing hydraulic systems, control valves, power steering and trailer braking, the power shift transmission with its H-M-L unit and axles, front and rear PTO, power lift, and the hydraulic front axle suspension. It also includes the ECU tester procedures for the engine, transmission, lift, and armrest controllers, plus full electrical diagrams.From bleeding the brakes and calibrating the electro-hydraulics to a complete transmission or PTO clutch overhaul, it gives the tightening torques, clearances, and step-by-step methods for working on your Rubin.
What's Inside This Same Rubin 120, Rubin 135, Rubin 150 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety & Manual Introduction | - | Safety Notes, General Safety Rules, How to Use and Update the Manual, Lifting Instructions, Standard Tightening Torques, Special Tools |
| Hydraulic System & Control Valves | - | Open Center (Oc) Hydraulic System, Load Sensing (Ls) Hydraulic System, Auxiliary Services Circuit Pump, Variable Displacement Pump, Power Shift Control Valve, Main Clutch Control Valve, Services Control Valve, Range Gearbox Control Valve, Priority Valve |
| Steering and Braking Systems | - | Power Steering, Trailer Braking Valve (Italy Version), Trailer Braking Valve (Export Version), Trailer Braking Valve (OC/LS Version) |
| Transmission and Axles | - | Power Shift Transmission, H-M-L Unit, Intermediate Gearbox, Rear Gearbox, Front Axle, Rear Axle |
| PTO and Power Lift | - | Rear PTO, Rear Power Lift, Power Lift Control Unit (Ls), Power Lift Operation |
| Suspension Systems | - | Hydraulic Front Axle Suspension, Front Suspension Control Valve, Suspension Operation |
| Electronic Components Testing & ECU Calibration | - | System Conformation, Connection of Tester to ECU, CAN Network Menu, Engine Configuration, Power Signal Calibration, Idle Speed Power Calibration, Gearbox Type Configuration, Clutch Calibration, Monitor Sensors-Pushbuttons, Alarms List, Monitor Rear Lift |
| Electrical Diagrams | - | Functional Diagram, Suspended Front Axle Wiring, Suspended Front Axle Cab Wiring, Diagnostic Wiring, Wiring for Pressurized Cab, Cab Roof Wiring, Cab Fps Wiring, Front Wiring |
| Engine Hood, Panels & Engine Component Service | - | Removal of Upper Hood, Refitting Engine Hood, Adjustment of Hood Catch, Removal of Front Grille, Starter Motor, Alternator, Air Compressor, Radiator, Thermostat Valves, Coolant Pump, Injection Pumps, Turbocharger |
| Braking, Steering & Front Axle Service | - | Brake Master Cylinders Removal, Adjustment and Alignment of Brake Pedals, Bleeding the Braking System, Testing and Calibration of Power Steering, Removal and Dismantling of Power Steering Unit, Front Wheels Removal, Front Brakes Overhaul, Epicyclic Reduction Units Dismantling, Front Axle Differential Dismantling, Front Carrier Removal |
| Front PTO & Air Conditioning Service | - | Removal, Dismantling and Assembly of Front PTO, Clutch-Brake Unit Dismantling, Solenoid Valve Block Dismantling, Air Conditioning System Operation, Discharging Flushing and Recharging, Compressor Removal, Condenser Cooling Fans Removal, Receiver-Drier Removal |
| Pumps and Filters Service | - | Complete Pump Assembly Removal, Testing Auxiliary Services Pump, Pumps (Ls Version) Removal, Filters (Oc Version) Removal, Pumps (Oc Version) Removal |
| Transmission Casing & PTO Clutch Service | - | Front Transmission Casing Dismantling, Main Shaft and Shuttle Dismantling, Shuttle Synchronizer Dismantling, Creeper Unit Dismantling, Rear Transmission Removal, PTO Shaft Dismantling, Range Selector Fork Dismantling, Parking Brake and 4WD Unit Dismantling, Dismantling and Assembly of PTO Clutch, Removal of Inner Clutch Housing, Pistons, Seals and Bearings |
| Rear Axle - Brakes Service | - | Removal and Dismantling of Axle Casings, Halfshafts Preparation, Assembly of Axle Casing, Removal and Dismantling of Brake Units |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main bearing cap bolts torque | 92 Nm (67.8 lb.ft.) | p. 586 |
| Big-end cap bolts torque (Stage 1) | 10 Nm (7.4 lb.ft.) | p. 589 |
| H clutch piston stroke | 1.2±0.1 mm (0.047±0.004 in.) | p. 650 |
| H-M-L unit ring nut torque | 500 Nm (368 lb.ft) | p. 657 |
| Intermediate timing gear backlash | 0.06 -- 0.1 mm (0.0024 -- 0.004 in.) | p. 580 |
| Main shaft end float | 0.05 -- 0.15 mm (0.002 -- 0.006 in.) | p. 689 |
| Proportional solenoid valve current draw (minimum) | 200 mA | p. 165 |
| Solenoid valve spools torque | Max. 50 Nm (37 lb.ft.) | p. 444 |
| Standard Tightening Torque (M6x1, 8.8 bolt class) | 8.0-8.8 Nm | p. 12 |
| Standard Tightening Torque (M24x3, 12.9 bolt class) | 950-1050 Nm | p. 12 |
| Auxiliary Services Circuit Pump A Displacement | 16 cc/rev | p. 37 |
| Oil Level Maintenance Circuit Pump Displacement | 19 cc/rev | p. 38 |
Same Rubin 120, Rubin 135, Rubin 150 Common Problems This Manual Covers
Tractor will not change gears
Some Rubin owners find the tractor will not shift even with the clutch pressed, pointing to a shift fault or a mispositioned control coil. The transmission and axles coverage addresses the power shift transmission and its gear selection.
Manual Section: Transmission and AxlesPTO will not disengage
A rear PTO that keeps turning after the off command is a reported fault on these tractors. The PTO and power lift section covers the rear PTO and its controls.
Manual Section: PTO and Power LiftSlipping PTO clutch
A worn PTO clutch pack slips or fails to drive implements fully. The PTO clutch overhaul section walks through dismantling the clutch, pistons, seals, and reassembly.
Manual Section: PTO Clutch OverhaulFault codes or warning lights
Dashboard warnings and stored fault codes need the tester to read and clear. The electronic components testing section covers connecting the tester to the ECUs and reading the CAN network.
Manual Section: Electronic Components Testing and CalibrationHeavy or failing power steering
Hard steering or loss of assist usually means a pressure or pump fault. The power steering service section covers testing, calibration, removal, and overhaul of the steering unit.
Manual Section: Power Steering ServiceSpongy brakes after service
A soft brake pedal after work in the system means air is trapped. The braking system service section covers master cylinder service, pedal adjustment, and bleeding the brakes.
Manual Section: Braking System ServiceFrequently Asked Questions
Which models does this workshop manual cover?
It covers the SAME Rubin 120, Rubin 135, and Rubin 150 tractors with the 1000.6 WT and 1000.6 WTI diesel engines, across 812 pages of repair and diagnostic procedures.
Does it list tightening torque specifications?
Yes. The standard tightening torques section gives values by nut and bolt class, and the repair sections add specific torques for engine, transmission, and clutch fasteners. p. 12
Can I read and calibrate the electronic controls?
Yes. The manual includes tester procedures for the engine, transmission, lift, and armrest ECUs, covering configuration, calibration, sensor monitoring, and alarm lists.
Does it cover full engine and transmission overhaul?
Yes. Dedicated sections cover engine component removal and refitting and complete transmission casing, H-M-L unit, and rear transmission service, including clearances and end float checks.
What format is this manual in?
This is a 812-page searchable PDF ready for immediate download. Works on any device, pull it up on your phone while you're under the hood. No shipping, no waiting.
Is this Same Rubin 120, 135, 150 Workshop Manual printable?
Yes. The PDF has no DRM restrictions, print any page or section you need for your shop. Works with any standard printer.
Does this Same Rubin 120, 135, 150 manual cover the hydraulic?
Yes, complete hydraulic schematics with flow diagrams, valve configurations, and pressure specifications are included.
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