Overview
The Massey Ferguson 2650, 2660, 2670 and 2680 Tractor Service Repair Manual provides technical information for workshop maintenance, troubleshooting and repair of these agricultural tractors. It includes component specifications, mechanical servicing procedures, diagnostic references, system adjustments and detailed instructions for dismantling and reassembling major tractor assemblies.
Coverage includes engine inspection and overhaul, clutch systems, 8×2, 8×8 and 12×4 gearboxes, rear axle and braking components, live and independent power take-off systems, and two-wheel-drive and Carraro four-wheel-drive front axles. Additional sections address Ferguson hydraulic linkage, auxiliary hydraulic controls, electrical circuits, starter and alternator servicing, cab equipment, air conditioning and heating.
Safety: The introductory and engine chapters include workshop safety instructions, while the cab and air conditioning section provides additional safety recommendations for refrigeration system servicing. Review the applicable instructions before undertaking mechanical repairs or refrigerant handling.
Notice: The supplied manual bookmarks identify the models as 2600, 2660, 2670 and 2680, whereas this listing includes the 2650. Verify the tractor identification and applicable specifications when consulting model-specific service information for the MF 2650.
Table of Contents
Massey Ferguson 2650, 2660, 2670, 2680 Manual
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01. Introduction and Specifications
- Tractor Models
- Introduction
- Technical Specifications
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02. Tractor Openings
- Separating the Tractor Between the Front Axle and Engine
- Separating the Tractor Between the Engine and Gearbox
- Separating the Tractor Between the Gearbox and Rear Axle
- Hood and Operator’s Platform
- Separation in Tractors Equipped with Cab
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03. Engine
- Introduction
- Specifications
- Testing and Adjusting
- Disassembly and Assembly
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04. Clutch
- Introduction
- Clutch Specifications
- Single-Stage Clutch (ND)
- Dual-Stage Clutch
- Split-Torque Clutch
- Heavy-Duty Split Clutch with Membrane Spring
- Flywheels
- Clutch Release Mechanism
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05. Gearbox
- 8×2 Gearbox
- Constant Mesh 12×4-Speed Gearbox
- Synchromesh 12×4-Speed Gearbox
- 8×8-Speed Gearbox
- Slow/Fast Selector Assembly
- Reduction Gearbox
- Side-Shift 12×4 Speeds
- Side-Shift 8×8 Speeds – Cab Version
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06. Rear Axle
- Introduction
- Technical Specifications
- Rear Final Drives
- Drive and Brake System
- Trumpets, Pinion and Differential Assembly
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07. Power Take-Off
- Introduction
- IPTO Assembly Removal
- IPTO Refitting and Adjustments
- Hydraulic Clutch – IPTO
- IPTO Side Cover and Control Valve Assembly
- Pressure Maintaining Valve
- Power Take-Off – 540 and 1000 RPM
- Live Power Take-Off – PTO
- Output Shaft
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08. Front Axles
- General Specifications
- Two-Wheel-Drive Front Axle
- Carraro 4WD Front Axle (20.14)
- Carraro 4WD Front Axle (20.18 and 20.21)
- Side Wheel-Drive Gearbox – Mechanical
- Central 4WD Spacer
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09. Hydraulic System
- Introduction
- Hydraulic Diagrams
- Hydraulic Lift System – Presentation
- Hydraulic Lift – Linkage Pump
- Hydraulic Lift – Top Cover and Inner Cylinder
- Hydraulic Lift – Outer Cylinders
- Hydraulic Lift – Tests and Adjustments
- Auxiliary Systems – Auxiliary Control Valve
- Third Body Kit
- Auxiliary Systems – Pressure Maintaining Valve (PMV)
- Auxiliary Systems – Tests and Adjustments
- Auxiliary Systems – Hydraulic Pumps
- Auxiliary Systems – Oil Filtering
- Front Loading
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10. Electrical System
- Specifications
- Electrical Circuits – Platform Version Tractors
- Electrical Circuits – Platform Shuttle Version Tractors
- Electrical Circuits – Low-Profile Version Tractors
- Electrical Circuits – Cab Version Tractors
- Electrical Circuits – Cab Shuttle Version Tractors
- Wiring Harnesses and Connectors
- Electrical Board – Fuses and Relays
- Prestolite Alternator
- Iskra Alternator
- Iskra Starter Motor
- Instrument Panel
- Relays
- Fuel Level Sensor
- Sensors
- Solenoids and Electrovalves
- Cold Start Advance Unit (KSB)
- Starter Switch Key
- Switches
- Batteries
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12. Cab and Climatization
- Safety Recommendations
- Air Conditioning System – Presentation
- Electrical Diagrams
- Gas Recharge
- Troubleshooting
- Outer Roof and Evaporator Box
- Inner Roof and General Cab Components
- Heater
Transmission, Axle and Hydraulic System Configurations
The gearbox documentation distinguishes 8×2, constant mesh 12×4, Synchromesh 12×4 and 8×8 transmission arrangements, including separate side-shift configurations. Front axle servicing covers two-wheel-drive assemblies and Carraro 20.14, 20.18 and 20.21 four-wheel-drive axles. Identify the transmission and axle configuration fitted to the tractor before following the corresponding specifications, adjustments or overhaul procedures.
The hydraulic chapters provide Ferguson three-point linkage information, hydraulic pump servicing, pressure-maintaining valve references and system testing procedures. Power take-off documentation distinguishes live PTO and independent PTO assemblies, including 540 and 1000 RPM configurations. Electrical service information also separates platform, low-profile and cab wiring arrangements and includes Prestolite and Iskra alternator references, starter motor servicing and component testing.
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