Overview
The Massey Ferguson 1125, 1140, 1145, 1240, 1250 and 1260 Tractor Workshop Service Repair Manual provides detailed technical information for maintaining, troubleshooting and repairing these Massey Ferguson compact agricultural tractors. The workshop documentation covers tractor specifications, safety precautions, engine overhaul, diesel fuel injection systems, clutch assemblies, mechanical and hydrostatic transmissions, Power Shuttle controls, two-wheel-drive and four-wheel-drive front axles, rear axle and braking components, power-assisted steering, hydraulic lift equipment and electrical systems.
Technical coverage includes engine compression testing, cylinder head and crankshaft servicing, injector and injection pump maintenance, transmission synchroniser repairs, PTO clutch overhaul, front differential servicing, hydraulic pressure control valves and steering gear pump repairs. Additional references include tractor splitting procedures, periodic maintenance schedules, hydraulic linkage adjustments, wiring harness identification, electrical troubleshooting, Hitachi and Nippon Denso starter motor overhaul, alternator testing, component specifications and specialised workshop service information.
Important Information: The workshop manual covers different engine, clutch, transmission and front axle configurations. Certain procedures are model-specific, including turbocharger servicing for the MF 1145, seat suspension equipment for the MF 1250/1260 and Hydrostat transmission references for the MF 1250/1260. The documentation also contains separate procedures for two-wheel-drive and four-wheel-drive front axles, Power Shuttle controls and different starter motor types. Identify the tractor model and installed components before selecting the applicable service instructions.
Table of Contents
Massey Ferguson 1125, 1140, 1145, 1240, 1250, 1260 Manual
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01. Introduction and Specifications
- Workshop Manual Introduction and Indexing
- Special Workshop Tools
- Repair and Replacement Procedures
- Repair Time Schedule
- Workshop Manual Amendments
- General Safety Precautions
- Tractor Identification
- Model and Serial Number Identification
- Special Component Tightening Torques
- Standard Bolt and Nut Torque Chart
- Lubrication and Periodic Maintenance
- Lubricant Specifications and Capacities
- Periodic Maintenance Schedule
- Lubrication and Fluid Filling Points
- Major Tractor Component Information
- General Tractor Specifications
- Transmission Gear Train Diagrams
- Sealants and Adhesives
- Measurement Conversion Tables
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02. Sheet Metal and Three-Point Linkage
- Hood Side Panel Removal and Installation
- Front Grille Removal and Installation
- Engine Hood Removal and Installation
- Steering Column Cover Removal and Installation
- Instrument Cover Removal and Installation
- Roll-Over Protective Structure (ROPS) Frame
- ROPS Frame Removal and Installation
- Tractor Fender Removal and Installation
- Operator Seat Removal and Installation
- Seat Suspension – MF 1250 and MF 1260
- Platform Mount Removal and Installation
- Floating Frame and Fender Assembly
- Under-Seat Panel Removal and Installation
- Fuel Tank Removal and Installation
- Muffler Removal – MF 1125, 1140, 1240 and 1250
- Muffler Removal – MF 1145 and 1260
- Drawbar Removal and Installation
- Drawbar Bracket Removal and Installation
- Three-Point Linkage Top Link
- Lift Rod and Lower Link Removal and Installation
- Three-Point Linkage Check Chain
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03. Major Components and Tractor Separation
- General Precautions for Tractor Separation
- Major Component Reinstallation Precautions
- Standardised Component Installation Procedures
- Roller and Ball Bearing Installation
- Oil Seal and O-Ring Installation
- Snap Ring and Spring Pin Installation
- Cotter Pin, Bolt and Nut Installation
- Grease Fitting Installation Precautions
- Major Tractor Component Separation
- Front Axle Separation
- Front Axle Assembly Separation from Engine
- Engine Separation from Front Transmission
- Front Transmission Separation from Spacer Transmission
- Spacer Transmission Separation from Differential
- Rear Axle Housing Removal and Installation
- Hydraulic Lift Cylinder Cover Removal and Installation
- Engine Removal and Installation
- Major Component Disassembly and Reassembly
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04. Engine General Information
- General Engine Specifications
- Engine Performance Curves
- Engine Lubrication System
- Engine Lubrication Specifications
- Engine Lubrication Diagram
- Engine Oil Pump Component Identification
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05. Engine Service Specifications
- General Engine Service Information
- Engine Service Specifications
- Engine Diagnosis
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06. Engine Overhaul and Repair
- Preliminary Engine Overhaul Inspection
- Engine Compression Testing
- Engine Oil Consumption Inspection
- Engine Fuel Consumption Inspection
- Abnormal Engine Noise Inspection
- Valve Cover Removal and Installation
- Rocker Arm Removal and Installation
- Engine Tappet Clearance Adjustment
- Valve Train Disassembly and Reassembly
- Engine Valve Train Inspection
- Turbocharger and Air Tank Removal – MF 1145
- Turbocharger General Information
- Intake and Exhaust Manifold Servicing – MF 1125/1140
- Intake and Exhaust Manifold Servicing – MF 1145
- Intake and Exhaust Manifold Inspection
- Cylinder Head Removal and Installation
- Cylinder Head Inspection
- Combustion Chamber Inspection
- Engine Valve Regrinding
- Valve Seat Inspection and Correction
- Engine Valve Inspection
- Valve Spring Inspection
- Valve System Reassembly
- Valve Guide Seal Replacement
- Engine Hot Plug Removal and Installation
- Crankshaft Pulley Removal and Installation
- Timing Gear Cover and Oil Seal Service
- Timing Gear Removal and Installation
- Engine Oil Pan Removal and Installation
- Engine Crankcase Service
- Camshaft and Tappet Removal and Installation
- Camshaft Inspection
- Engine Oil Filter Service
- Oil Pressure Relief and Bypass Valve Service
- Engine Oil Pump Removal and Installation
- Engine Oil Pump Overhaul
- Flywheel and Ring Gear Removal and Installation
- Rear Crankshaft Oil Seal Replacement
- Crankshaft Removal and Installation
- Crankshaft Inspection
- Crankshaft Bearing Inspection
- Piston and Connecting Rod Removal
- Piston Ring Inspection
- Piston and Connecting Rod Disassembly
- Piston and Connecting Rod Inspection
- Connecting Rod Bearing Inspection
- Piston and Connecting Rod Reassembly
- Engine Cylinder Reboring
- Major Engine Overhaul Procedures
- Minor Engine Overhaul Procedures
- Engine Oil Consumption Rectification
- Engine Cylinder Block Replacement
- Engine Troubleshooting
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07. Engine Fuel Injection System
- Diesel Fuel System General Description
- Fuel Injection System Specifications
- Fuel Injection Volume Adjustment
- Injection Pump and Governor Performance Diagram
- Injection Pump Lubricating Oil
- Fuel Injection Pump Removal and Installation
- Diesel Injector Nozzle General Information
- Injector Nozzle Removal and Installation
- Fuel Injector Nozzle Testing
- Injector Nozzle Disassembly and Reassembly
- Injector Nozzle and Holder Inspection
- Injector Nozzle Adjustment
- Fuel Filter Removal and Installation
- Diesel Fuel System Air Bleeding
- High-Pressure Fuel Line Removal and Installation
- Injection Pump Spill Timing
- 08. Engine Drop-In
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09. Cooling System and Air Cleaner
- Engine Cooling System General Description
- Cooling System Specifications
- Radiator Removal and Installation
- Radiator Water Leak Inspection
- Radiator Compressed Air Leak Testing
- Radiator Cap Pressure Testing
- Radiator Clogging Inspection
- Radiator Exterior Inspection
- Radiator Cap Inspection
- Radiator Function Testing
- Radiator Reassembly
- Engine Coolant Level Inspection
- Engine Coolant Replacement
- Antifreeze Requirements and Filling Precautions
- Radiator Hose Removal and Installation
- Cooling Fan Belt Removal and Installation
- Water Pump Removal and Installation
- Water Pump Inspection and Repair
- Water Pump Reassembly
- Engine Thermostat Specifications
- Thermostat Removal and Installation
- Thermostat Inspection
- Engine Air Cleaner Servicing
- Engine Air Cleaning System Specifications
- Cooling System and Air Cleaner Troubleshooting
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10. Clutch – First Service Section
- Clutch General Description
- Clutch System Specifications
- Main Clutch Removal and Installation
- Main Clutch Overhaul
- Main Clutch Inspection
- Main Clutch Reassembly
- Clutch Release Bearing Removal and Installation
- Clutch Shaft and Related Components
- Clutch Shaft Disassembly and Inspection
- Clutch Shaft Reassembly
- Clutch Free-Play Adjustment
- Clutch Rod Linkage Removal and Installation
- Clutch System Troubleshooting
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11. Clutch – Second Service Section
- Clutch General Information and Specifications
- Clutch Overhaul Procedures
- Main Clutch Removal and Installation
- Main Clutch Inspection
- Clutch Pressure Plate Inspection
- Clutch Friction Surface Repair
- Clutch Pressure Spring Adjustment
- Clutch Pressure Spring Inspection
- Main Clutch Reassembly
- Clutch Release Bearing Removal and Installation
- Clutch Shaft Removal and Installation
- Clutch Shaft Inspection and Reassembly
- Clutch Free-Play Adjustment
- Clutch Rod Linkage Service
- Clutch Troubleshooting and Test Methods
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12. Transmission
- Transmission General Description
- Transmission Shift Patterns
- Transmission Power Flow Diagrams
- Synchroniser Mechanism Construction
- Transmission Synchroniser Operating Principles
- Transmission Operating Procedures
- Transmission Specifications
- Transmission Input Section Removal and Installation
- Transmission Input Housing and Gear Assemblies
- Forward and Reverse Transmission Gears
- PTO Clutch Removal and Installation
- Forward and Reverse Synchroniser Overhaul
- Transmission Synchroniser Inspection
- Reverse Shaft Subassembly
- Transmission Input Shaft Installation
- PTO Clutch Overhaul
- PTO Clutch Cover Assembly Inspection
- PTO Clutch Disc and Driven Plate Inspection
- PTO Brake Disc Inspection
- PTO Clutch Reassembly
- Range Transmission and Four-Wheel-Drive Shift Gears
- Main Transmission Gear Removal and Installation
- Main Transmission Gear Overhaul
- Main Transmission Gear Inspection and Reassembly
- Range Gear Removal and Installation
- Range Gear Overhaul and Reassembly
- Transmission Ring Gear and Pinion Service
- Differential Gear Installation
- Ring and Pinion Gear Tooth Contact Inspection
- PTO Shaft Removal and Installation
- PTO Shaft Disassembly and Reassembly
- Mid Power Take-Off Service
- Forward and Reverse Shift Mechanism
- Main Transmission Shift Mechanism
- Range Shift Mechanism
- Front Wheel Drive Shift Mechanism
- Transmission Shifter Disengaging Load Service
- Shuttle Control Cable Removal and Installation
- Transmission and Four-Wheel-Drive Troubleshooting
- PTO Drive System Troubleshooting
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13. Power Shuttle and Hydrostatic Transmission
- Power Shuttle Transmission Specifications
- Power Shuttle Engine and Drivetrain Specifications
- Power Shuttle Tractor Dimensions and Capacities
- Power Shuttle Lever Operating Principles
- Power Shuttle Operating Precautions
- Power Shuttle Lever Installation
- Power Shuttle Control Switch Installation
- Power Shuttle Linear Shift Switches
- Power Shuttle Control Switch Adjustment
- Power Shuttle Hydraulic Fluid Circulation
- Power Shuttle Main Hydraulic Circuit
- Power Shuttle Auxiliary Hydraulic Circuit
- Power Shuttle Hydraulic Piping System
- Hydraulic Pipe Joint Tightening Torques
- Power Shuttle Reducing Valve Location
- Power Shuttle Reducing Valve Operation
- PTO Solenoid Valve Operation
- Power Shuttle Timer Control Unit
- PTO Timer Relay Location
- Power Shuttle Reverse Valve Operation
- MF 1250/1260 Power Shuttle Wiring Harness
- Power Shuttle Component Layout
- Hydrostatic Transmission Specifications – MF 1250/1260
- Hydrostatic Transmission General Dimensions
- Hydrostatic Transmission Hydraulic System
- Hydrostatic Reducing Valve and Piping
- Hydrostatic Transmission PTO Solenoid Operation
- Hydrostatic Transmission Timer Unit
- Hydrostatic PTO Timer Relay
- MF 1250 Hydrostatic Transmission Component Layout
- MF 1260 Hydrostatic Transmission Component Layout
- Hydrostatic Transmission Wiring Harness
- Hydrostat Transmission Disassembly
- Hydrostatic Component Wear Limits
- Hydrostat Transmission Reassembly
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14. Two-Wheel-Drive Front Axle
- Two-Wheel-Drive Front Axle General Information
- 2WD Front Axle Specifications
- Front Axle Beam Removal and Installation
- Front Axle Beam Disassembly and Inspection
- Front Axle Centre Bushing Replacement
- Front Axle Beam Reassembly
- Front Wheel Toe-In Adjustment
- Front Spindle Shaft Removal and Installation
- Front Spindle Shaft Disassembly and Inspection
- Front Spindle Bushing Replacement
- Front Spindle Installation
- Front Wheel Hub Disassembly and Reassembly
- Front Spindle and Wheel Hub Reassembly
- Front Axle Steering Stop
- Front Pivot Bracket and Seal Service
- Front Tie Rod Removal and Installation
- Two-Wheel-Drive Front Axle Troubleshooting
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15. Four-Wheel-Drive Front Axle
- Four-Wheel-Drive Front Axle General Information
- 4WD Front Axle Specifications
- Front Wheel Drive Shaft Removal and Installation
- Front Axle Pivot Bracket Removal and Installation
- Front Axle Pivot Bracket Disassembly and Inspection
- Front Axle Pivot Bracket Reassembly
- Four-Wheel-Drive Front Wheel Toe-In Adjustment
- Front Differential Removal and Installation
- Front Differential Disassembly
- Front Differential Overhaul
- Front Differential Inspection
- Front Differential Reassembly
- Front Wheel Shaft Seal Replacement
- Front Axle Centre Section Removal and Installation
- Front Axle Bracket Oil Seal Replacement
- Front Final Drive Housing Overhaul
- Final Drive Housing Disassembly and Inspection
- Final Drive Bushing Inspection
- Final Drive Housing Reassembly
- Four-Wheel-Drive Front Axle Troubleshooting
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16. Rear Axle and Brakes
- Rear Axle General Information
- Rear Axle and Brake Specifications
- Rear Final Drive Gear Removal and Installation
- Rear Axle Shaft Removal and Installation
- Rear Axle Oil Seal and Bearing Replacement
- Rear Brake Disc Removal and Installation
- Rear Brake System Overhaul
- Brake Friction Plate Inspection
- Brake Actuator Inspection
- Brake Separator Plate Inspection
- Brake Assembly Reassembly
- Differential Lock Clutch Removal and Installation
- Rear Axle Housing Removal and Installation
- Brake Boot Removal and Installation
- Rear Brake Adjustment
- Brake Rod Removal and Installation
- Brake Pedal Removal and Installation
- Brake Operation Adjustment
- Parking Brake Removal and Installation
- Rear Axle and Brake Troubleshooting
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17. Power-Assisted Steering
- Power Steering System General Information
- Power Steering Specifications
- Power Steering Gear Pump Specifications
- Power-Assisted Steering Unit Specifications
- Steering Hydraulic Reservoir Specifications
- Steering System Neutral Position
- Power Steering Right-Turn Operation
- Power Steering Left-Turn Operation
- Power Steering Unit Removal and Installation
- Power Steering Unit Overhaul
- Steering Gear Case Disassembly
- Steering Side Cover Assembly
- Steering Ball-Nut Assembly
- Steering Valve Housing Assembly
- Steering Ball-Nut and Worm Shaft Inspection
- Steering Valve Inspection
- Steering Sector Shaft Inspection
- Steering Gear Case and Bearing Inspection
- Steering Unit Sealing Components
- Power Steering Unit Reassembly
- Steering Unit Bearing Preload Adjustment
- Power Steering Gear Pump Removal and Installation
- Steering Gear Pump Overhaul
- Steering Pump Disassembly and Inspection
- Steering Pump Reassembly
- Steering Wheel Removal and Installation
- Steering Drive Shaft Removal and Installation
- Steering Reservoir Removal and Installation
- Power-Assisted Steering Troubleshooting
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18. Hydraulic System
- Hydraulic System General Description
- Hydraulic System Specifications
- Hydraulic Pump Removal and Installation
- Transmission Hydraulic Oil Replacement
- Hydraulic Cartridge Filter Replacement
- Hydraulic Suction Filter Replacement
- Hydraulic Pump Overhaul
- Hydraulic Pump Disassembly and Inspection
- Hydraulic Pump Gear Inspection
- Hydraulic Pump O-Rings and Oil Seals
- Hydraulic Pump Reassembly
- Hydraulic Pump Inspection After Reassembly
- Hydraulic Lift Shaft and Crank Removal
- Hydraulic Lift Cylinder and Piston Service
- Hydraulic Three-Point Linkage Adjustment
- Main Hydraulic Control Valve
- Main Hydraulic Spool Valve
- Hydraulic Unloading Valve and Compensator
- Hydraulic Holding Check Valve
- Hydraulic Pilot Spool
- Main Control Valve Neutral Position
- Main Control Valve Lifting Position
- Main Control Valve Lowering Position
- Hydraulic Unloading Process
- Main Control Valve Removal and Installation
- Main Control Valve Disassembly and Reassembly
- PTO Hydraulic Flow Divider Valve
- PTO Hydraulic Solenoid Changeover Valve
- Hydraulic Pressure-Reducing Valve
- PTO Hydraulic Valve On/Off Operation
- PTO Flow Divider Valve Overhaul
- Hydraulic Pressure Control Valve
- PTO Pressure Control Valve Removal and Installation
- PTO Pressure Control Valve Overhaul
- Main Hydraulic Relief Valve
- Main Relief Valve Pressure Testing
- Hydraulic Cylinder Protection Relief Valve
- Slow-Drop Hydraulic Check Valve
- Hydraulic Linkage System Overhaul
- Hydraulic Lift Cover Replacement
- Hydraulic Piston Lift Rod Service
- Draft Control Adjustment
- Draft Torsion Bar and Housing Service
- Remote Auxiliary Hydraulic Control Valves
- Remote Hydraulic Control Valve Specifications
- Remote Hydraulic Control Valve Overhaul
- Hydraulic System Troubleshooting
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19. Electrical System
- Electrical System General Information
- Electrical System Specifications
- Battery Inspection and Servicing
- Battery Electrolyte Level Inspection
- Battery Specific Gravity Testing
- Battery Charging Procedures
- Instrument Panel Removal and Installation
- Tachometer Removal and Inspection
- Fuel Gauge Removal and Installation
- Fuel Gauge Sender Unit Inspection
- Coolant Temperature Gauge Service
- Starter Switch Removal and Inspection
- Turn Signal and Hazard Light Switch
- Electrical Combination Switch
- PTO Electrical Switch Removal and Installation
- Tractor Lighting Switch
- Horn Switch Removal and Installation
- Main Electrical Wiring Harness
- Alternator Wiring Harness
- Starter Motor Wiring Harness
- Rear Frame Wiring Harness
- Instrument Panel Wiring Harnesses
- PTO Switch Wiring Harness
- Floor and Fuel Tank Wiring Harness
- Fender Wiring Harness
- Electrical Fuse Identification
- Front Headlight Bulb Replacement
- Indicator and Tail Light Bulb Replacement
- Instrument Panel Light Bulb Replacement
- Instrument Indicator Light Strip
- Lighting System Troubleshooting
- Instrument Panel Troubleshooting
- Engine Glow System Troubleshooting
- Electrical Starting System Troubleshooting
- Battery Charging System Troubleshooting
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20. Hitachi Starter Motor
- Hitachi Starter Motor Specifications
- Hitachi Starter Removal and Installation
- Hitachi Starter Motor Overhaul
- Starter Motor Component Inspection
- Starter Motor Servicing
- Hitachi Starter Motor Reassembly
- Starter Solenoid Removal and Installation
- Starter Solenoid Overhaul
- Starter Motor Performance Testing
- Starter Motor Unloaded Test
- Starter Performance Characteristics
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21. Nippon Denso Starter Motor
- Nippon Denso Starter Motor Specifications
- Nippon Denso Starter Removal and Installation
- Nippon Denso Starter Motor Overhaul
- Starter Motor Component Inspection
- Starter Motor Servicing
- Nippon Denso Starter Reassembly
- Starter Motor Performance Testing
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22. Alternator and Charging System
- Alternator Specifications
- Alternator Removal and Installation
- Alternator Overhaul
- Alternator Component Inspection
- Alternator Servicing
- Alternator Reassembly
- Alternator Regulator Removal and Installation
- Integrated Circuit (IC) Regulator Testing
Starter Motor Identification and Testing
The workshop documentation provides separate service sections for Hitachi and Nippon Denso starter motors. Both sections cover starter specifications, removal, component inspection, overhaul, reassembly and performance testing. The Hitachi section additionally identifies starter solenoid servicing and unloaded performance testing.
Before using the starter repair specifications, identify which unit is installed on the tractor. The electrical system chapter also contains starting and charging system troubleshooting references, while the alternator section provides separate overhaul procedures and integrated circuit regulator testing.
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