Overview
The Massey Ferguson 431 and 461 Tractor Workshop Service Manual provides technical guidance for diagnosing, maintaining and repairing these tractors. Its component-specific chapters include specifications, fault-finding information, mechanical assemblies and service procedures for workshop use.
Coverage spans tractor identification, engine and cooling references, clutch and gearbox assemblies, axles, brakes, power take-off, lift and auxiliary hydraulics, steering and electrical components. The contents also include hydraulic pressure tests, transmission servicing, wiring diagrams and special service tools.
Table of Contents
Massey Ferguson 431, 461 Manual
- 01A Introduction
-
01B Tractor Specifications
- Engine
- Clutch
- Transmission
- Rear Axle
- Brakes
- Power Take-Off
- Steering
- Front Axle – Two Wheel Drive
- Front Axle – Four Wheel Drive
- Electrical System
- Hydraulic System
- Drawbars
- Capacities
- Wheels
- Tractor Dimensions – 461
- Tractor Weights – 461
- Tractor Dimensions – 431
- Tractor Weights – 431
- Serial Numbers – Tractor
- Serial Numbers – Engine
- Transmission Identification
- Serial Numbers – Front Axle
- Fuel Specifications
- Fuel Handling, Storage and Specifications
- 01C Miscellaneous
-
02A Splitting the Tractor
- Specifications
- Splitting the Tractor Between the Front Axle and Engine (3 Cylinder)
- Splitting the Tractor Between the Engine and Gearbox (3 Cylinder)
- Splitting the Tractor Between the Gearbox and the Spacer or Center Housing (3 Cylinder)
- 03A Engine
-
03B Cooling System
- Specifications
- Fault Diagnosis
- Frost Precautions
- General Description
- Radiator – 3 Cylinder Tractor
- Fan Belt
- 03C Perkins Engine
-
04A Clutch
- Specifications
- General Description
- Fault Finding
- PTO Clutch
- Clutch Release Bearing
- Clutch Release Mechanism
- Dual Clutch Assembly
- Split-Torque Clutch Assembly
- Flywheel Pilot Bearing
-
05A 8-Speed Standard Gearbox
- Specifications
- General Description
- Gear Shift Levers
- Selector Rails and Forks
- Normal and Heavy Duty Epicyclic Unit
- Normal Duty Epicyclic Unit
- Heavy Duty Epicyclic Unit
- Input Shafts and Housing
- PTO Drive Shaft Front Bearing
- Layshaft, Mainshaft, PTO Shaft and Gears
-
05B 8-Speed Synchromesh Shuttle Gearbox
- Specifications
- General Description
- Gear Shift Levers
- Forward/Reverse (Shuttle) Control Lever
- Selector Rails and Fork
- Normal-Duty Epicyclic Unit
- Input Shafts and Housing
- PTO Drive Shaft Front Bearing
- Layshaft, Mainshaft, PTO Shaft and Gears
-
06A Brakes
- Specifications
- General Description – Multi Disc Oil Cooled Brakes
- General Description – Double Acting Drum Brakes
- General Description – All Braking Systems
- Drum Brakes
- Disc Brakes
- Brake Shoe Relining
- Brake Actuator Housing – Disc Brakes
- Foot Brake Linkage and Pedals – Pendant
- Foot Brake Pedal – Pendant
- Parking Brake – Cable Operated
-
06B Crownwheel, Pinion and Differential Lock
- Specification
- General Description
- Differential Lock – Drum Brakes (Adjustment)
- Differential Lock – Disc Brakes (Adjustment)
- Differential Lock – Drum Brakes (Overhaul)
- Differential Lock – Disc Brakes (Overhaul)
- Lower Link Pin – Drum Brakes
- Differential Lock Coupler Cap
- Differential Unit
- Crownwheel and Pinion
- Differential Pre-Load
-
06C Rear Axle
- Specification
- General Description – Indirect Drive Axle
- General Description – Direct Drive Axle
- Rear Wheel Stud
- Epicyclic Unit Ring Gear
- Epicyclic Planets and Sun Gear
- Epicyclic Unit
- Trumpet Housing and Carrier Plate
- Axle Shaft – Direct Drive – Drum Brakes
- Trumpet Housing – Direct Drive Axle
-
06D Drawbar and Linkage
- Specification
- General Description
- Left-Hand Lift Rod
- Right-Hand Lift Rod and Levelling Box
- Levelling Box
- Swinging Drawbar
-
07A Single Speed Power Take-Off
- Specification
- General Description
- PTO Shaft, Oil Seal and Bearing
- PTO Shaft, Bearing and Oil Seal
- Ground Speed Gears and Bearings
- Left-Hand PTO Side Cover
-
07B IPTO Single-Speed Power Take-Off
- Specification
- General Description
- Diagnosis
- Left-Hand Side Cover
- PTO Clutch Unit
-
08A Front Axle – 2 Wheel Drive – 3 Cylinder Tractors
- Specification
- General Description
- Front Wheel Toe-In
- Front Hub
- Spindle Shaft
- Spindle Housing
- Axle Beam Assembly
- Axle Supporting Casting
- Front Axle Support
-
08C Front Axle 461 – 4 Wheel Drive
- Specification
- General Description
- Wheel Alignment and Steering Stops
- Track Rod and Ball Joint
- Front Axle
- Planetary Carrier
- Hub Oil Seal
- Planetary Carrier and Hub
- Swivel Housing and Pins
- Drive Shaft and Oil Seals
- Drive Shaft
- Pinion Oil Seal
- Differential Assembly
- Crownwheel and Pinion
- Steering Ram
-
09A Lift Hydraulics
- Specification
- General Description
- Control Spring Assembly
- Hydraulic Lift Cover
- Hydraulic Cylinder
- Quadrant and Support Assembly
- Hydraulic Static Adjustments
- Hydraulic External Adjustments
- Hydraulic Pressure Test
- Hydraulic Lift Pump
- Hydraulic Relief Valve
-
09B Steering – Orbitrol Steering Unit
- Specification
- General Description
- Orbitrol Steering Unit
- Steering System Pressure Test
- Orbitrol Steering Unit – 3 Cylinder Tractors
- Orbitrol Steering Unit – 4 Cylinder Tractors
-
09C Steering – 3 Cylinder Tractors
- Steering System Pressure Test
- Steering System Flow Test
- Pressure Maintaining Valve Pressure Test
- Independent PTO Pressure Test
- Auxiliary Circuit Flow Test
-
09E Auxiliary Hydraulics
- Specification
- General Description
- Pressure Maintaining Valve Pressure Test
- Independent PTO Pressure Test
- Pressure Maintaining Valve
- Spool Valves
- Hydraulic Lift Pump
-
10A Electrical System – General
- Specification
- General Description
- Fault Diagnosis
- Headlight Beam
- Headlight Bulb
- Work Light Bulb
-
10B Electrical System – Battery
- Specification
- General Description
- Battery
- Routine Maintenance
-
10C Electrical System – Starter Motor
- Specification
- General Description
- Starter Motor
- Neutral Start Switch
- PTO Neutral Start Switch
- Starter Motor
- 10D Electrical System – Alternator
- 10E Electrical System – Wiring Diagrams
-
11A Service Tools
Model Identification and Service Applicability
Use the tractor identification and specification section to check the relevant model, serial-number references and transmission identification before following model-specific instructions. The front axle material distinguishes two-wheel-drive arrangements for three-cylinder tractors from the dedicated four-wheel-drive section for the MF 461.
The gearbox chapters separate standard 8-speed and synchromesh shuttle designs, while the PTO chapters distinguish single-speed and independent power take-off units. For steering or hydraulic investigations, consult the corresponding pressure and flow test sections rather than applying specifications from a different configuration.
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