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Need full factory procedures for your Same Rubin tractor? This 812-page Same Rubin 120, 135, 150 workshop manual PDF addresses all three models head-on: power shift transmission overhaul, Load Sensing and Open Centre hydraulic systems, ECU calibration, and complete engine rebuild. Inside: detailed electrical diagrams covering suspended front axle wiring, cab roof circuits, and diagnostic harnesses, plus hydraulic schematics that trace fluid routing through the variable displacement pump, priority valve, and power shift control circuit. You also get step-by-step procedures, four ECU tester manuals with alarm code lists for engine, transmission, lift, and armrest controllers, and clearance tolerances throughout. Set intermediate timing gear backlash to 0.06-0.1 mm at assembly; torque main bearing caps to 92 Nm and follow the multi-stage tightening sequence for big-end caps, which includes an angle-tighten step. Three weeks waiting on a dealer quote? Download once, search by keyword, and your answer is one click away.
What's Inside This Same Rubin 120, Rubin 135, Rubin 150 Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | - | Safety Notes, General Safety Rules, How to Use and Update the Manual, Lifting Instructions, Standard Tightening Torques, Special Tools |
| Hydraulic System | - | Open Center (Oc) Hydraulic System, Load Sensing (Ls) Hydraulic System, Auxiliary Services Circuit Pump, Variable Displacement Pump, Power Shift Control Valve |
| Control Valves | - | 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 and Calibration | - | System Conformation, Connection of Tester to ECU, Introductory Screen, CAN Network Menu |
| Engine ECU Tester Manual | - | Presentation Page, Main Menu, Engine Configuration, Power Signal Calibration, Idle Speed Power Calibration |
| Transmission ECU Tester Manual | - | Presentation Screen, Main Menu, Gearbox Type Configuration, Clutch Calibration, Monitor Sensors-Pushbuttons |
| Lift ECU Tester Manual | - | Presentation Screen, Monitor Menu, Parameters Menu, Setting Menu, Alarms List |
| Armrest ECU Tester Manual | - | Presentation Screen, Main Menu, Configurations Menu, Monitor Engine, Monitor Rear Lift |
| Electrical Diagrams | - | Functional Diagram, Suspended Front Axle Wiring, Suspended Front Axle Cab Wiring, Diagnostic Wiring, Wiring for Press. Cab, Cab Roof Wiring, Cab Fps Wiring, Front Wiring |
| Engine Hood, Side Panels and Grille | - | Removal of Upper Hood, Refitting Engine Hood, Adjustment of Hood Catch, Removal of Front Grille |
| Engine Components Removal and Refitting | - | Starter Motor, Alternator, Air Compressor, Radiator, Thermostat Valves, Coolant Pump, Injection Pumps, Turbocharger |
| Braking System Service | - | Brake Master Cylinders Removal, Refitting Brake Master Cylinders, Adjustment and Alignment of Brake Pedals, Bleeding the Braking System |
| Power Steering Service | - | Testing the Power Steering, Calibration, Removal of Power Steering Unit, Dismantling Power Steering Unit, Assembly of Power Steering Unit |
| Front Axle Service | - | Front Wheels Removal, Front Brakes Overhaul, Epicyclic Reduction Units Dismantling, Stub Axle Housings Removal, Front Axle Differential Dismantling, Front Carrier Removal |
| Front PTO Service | - | Removal of Front PTO, Dismantling Front PTO, Assembly of Front PTO, Clutch-Brake Unit Dismantling, Solenoid Valve Block Dismantling |
| Air Conditioning System Service | - | Operation of Air Conditioning System, Maintenance, 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 and H-M-L Unit Service | - | Front Transmission Casing Dismantling, Main Shaft and Shuttle Dismantling, Secondary Shaft Dismantling, Shuttle Synchronizer Dismantling, Creeper Unit Dismantling |
| Rear Transmission Service | - | Rear Transmission Removal, PTO Shaft Dismantling, Creeper Selector Fork Dismantling, Range Selector Fork Dismantling, Parking Brake and 4WD Unit Dismantling |
| PTO Clutch Overhaul | - | Dismantling PTO Clutch, Removing Inner Clutch Housing, Removing Pistons, Removing Seals and Bearings, Assembly of PTO Clutch |
| Rear Axle - Brakes Service | - | Preparation Prior to Dismantling, 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
SAME Rubin 120 won't shift gears with clutch pedal fully depressed, stuck in current gear p. 165
Verify the shift solenoid is receiving power and check wiring continuity. Measure current draw at the control solenoid: minimum is 200 mA (page 165). Below that threshold, trace the harness for open circuits or damaged connectors. If removing and reinstalling the solenoid assembly, torque each valve spool to a maximum of 50 Nm (page 444).
Manual Section: Transmission ECU Alarm CodesClutch slips under heavy load, gear changes don't fully engage, transmission hunts between ratios p. 650
Inspect the clutch pack for wear and measure H clutch piston stroke: spec is 1.2±0.1 mm (page 650). Connect the tester and run clutch calibration through the Transmission ECU Tester Manual. If stroke is out of spec, disassemble the H-M-L unit and torque the ring nut to 500 Nm (page 657) on reassembly.
Manual Section: Transmission ECU Tester ManualEngine idle speed unstable, surging above 700 rpm with no load attached p. 519
Check idle speed with a tachometer: correct range is 650-700 rpm (page 519). Read active Engine ECU alarm codes from the error code reference. Inspect the accelerator pedal potentiometer connector for corrosion or damage. If idle hunts after cleaning connections, run the Idle Speed Power Calibration procedure through the Engine ECU Tester Manual.
Manual Section: Engine ECU Tester ManualRear power lift won't hold position, implement slowly creeps down under load p. 45
Test system pressure at the hydraulic diagnostic port. The Load Sensing valve pressure difference must be 16 bar (page 45). Inspect the EVUP and EVDW solenoid connectors for corrosion, loose pins, or damaged wiring. If pressure is within spec but the lift still drifts, remove the control valve and inspect the spool and seals for wear.
Manual Section: PTO and Power LiftPower steering feels stiff or loses assist, wheel effort increases at low speed p. 76
Measure maximum continuous steering pressure with the engine at operating temperature. The relief valve must hold 150-155 bar (page 76). If pressure is low, adjust the relief valve per the Power Steering Service calibration procedure. If pressure is correct but steering is still stiff, remove and inspect the steering unit for scoring or internal bypass.
Manual Section: Power Steering ServiceTransmission growling or vibrating at speed, noise increases under load in all ranges p. 689
Drain and inspect the transmission oil for metallic debris as a first step. Measure main shaft end float: spec is 0.05-0.15 mm (page 689). Also check rear transmission differential backlash: correct range is 0.24-0.33 mm (page 762). If either measurement is out of tolerance, disassemble the affected assembly and adjust the shim pack before reassembly.
Manual Section: Rear Transmission ServiceFrequently Asked Questions
Why does the PTO on a SAME Rubin 150 not stop when I press the off button?
If the PTO does not stop when the off button is pressed, it indicates a failure in the disengagement and braking process. Potential issues include a PTO brake solenoid short-circuit (code 41) or a command/logical status discrepancy (code 57) as listed in the LIFT ECU ALARM CODES on page 20-196. These issues can prevent the brake band (13) from engaging to stop the PTO.
What are the torque specs for SAME Rubin 120/135/150 wheel nuts, head bolts, and clutch bolts?
Specific torque specifications are provided for various components. Front wheel nuts are 490 Nm (361 lb.ft.) for 2WD and 360 Nm (265.3 lb.ft.) for 4WD, while rear wheel nuts are 490 Nm (361 lb.ft.). Cylinder head bolts require a two-stage tightening: Stage 1 at 50 Nm (37 lb.ft.) and a final angle-tightening of 100 ±3°. For the H-M-L unit, the ring nut is 500 Nm (368 lb.ft.) and clutch (41) bolts are 112±6 Nm (82.5±4.4 lb.ft.).
What error codes or warning lights do SAME Rubin 120/135/150 tractors use?
SAME Rubin tractors use various error codes for different electronic control units (ECUs). For example, the Engine ECU has codes like 'OVERSPEED' (N° 1) and 'ACTUATOR OPEN' (N° 2), while the Transmission ECU includes 'Errore Configur' (N° 1) and 'Alim. 5v K.O.' (N° 2). The Lift ECU lists codes such as 'ShortCirc. PTO' (N° 41) and 'EvBRAKE err ON' (N° 57). Comprehensive lists for Engine, Transmission, Lift, and Armrest ECUs are provided in Section 20 of the manual, starting from page 20-23.
How do I bleed the brakes or hydraulic system on a SAME Rubin 120/135/150?
To bleed the braking system, attach a transparent bleed tube to the bleed screw, fully depress the pedal, slowly open the bleed screw (5) to allow fluid and air to flow, then tighten the screw while the pedal is depressed. Repeat until no air bubbles are present. For hydraulic systems, specific components like power steering, front lift, and front suspension require bleeding by operating them repeatedly to expel air from the circuits, as detailed on pages 30-49, 30-91, and 30-92 respectively.
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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