Class:
Lightweight general-purpose agricultural tractor, popular in its era for small to medium farms.
Competitors:
Fordson Major, Ferguson TE20 variants (though TO20 is a specific variant/branding).
Key Features:
Robust build, Ferguson System hydraulics, compact size, reliable Perkins diesel engine (most common).
Engine:
Detailed overhaul, troubleshooting, and component specifications for the Perkins P3 (1.6L diesel) engine.
Fuel System:
Service and repair of the fuel injection system, including pump and injector specifications.
Cooling System:
Maintenance and repair of the radiator, water pump, and thermostat.
Ignition System:
Troubleshooting and maintenance for gasoline models (though primarily known for diesel).
Electrical System:
Wiring diagrams, component testing, and troubleshooting for lighting, starting, and charging systems.
Transmission:
Detailed repair procedures for the 4-speed gearbox, clutch, and differential.
Hydraulics:
Service and repair of the hydraulic lift system, pump, and control valves.
Steering System:
Maintenance and repair of the steering mechanism and components.
Braking System:
Repair and adjustment of the rear drum brakes.
Front Axle:
Service and repair of the front axle and steering knuckles.
Rear Axle:
Overhaul and maintenance of the rear axle assembly.
Power Take Off:
Service and troubleshooting for the PTO system.
Body And Chassis:
Inspection and repair of the frame, fenders, and operator controls.
Maintenance:
Scheduled maintenance, lubrication points, filter replacement, and fluid checks.
Troubleshooting:
Diagnostic charts and systematic approaches to identify and resolve common issues.
Engine Rebuild:
Complete engine overhaul procedures, including disassembly, inspection, and reassembly.
Transmission Repair:
Step-by-step instructions for gearbox and clutch repair.
Hydraulic System Repair:
Procedures for diagnosing and repairing hydraulic leaks and performance issues.
Electrical Diagnostics:
Guidance on testing electrical components and tracing wiring faults.
Brake Adjustment:
Correct procedures for adjusting the rear brake system.
Clutch Adjustment:
Instructions for adjusting clutch engagement.
Pto Adjustment:
Maintenance and adjustment procedures for the PTO shaft and engagement.
Depth:
Comprehensive, from basic maintenance to complete engine and transmission rebuilds, including detailed specifications and diagrams.
Searchable Text:
Typically searchable in PDF format, allowing for quick information retrieval.
Print Quality:
High-resolution for clear diagrams and text, suitable for printing.
Binding Type:
N/A (Digital PDF Download)
Paper Type:
N/A (Digital PDF Download)
Engine Manufacturer:
Perkins
Engine Model:
P3 (or similar 3-cylinder diesel)
Displacement:
1.6 Liters (97.5 cubic inches)
Horsepower Diesel:
Approximately 35 HP (gross), around 28 HP (drawbar).
Torque Diesel:
Not explicitly specified in product info, but characteristic of the Perkins P3.
Fuel Type:
Diesel (common), Petrol variants existed but less prevalent.
Injection System:
Direct injection with CAV or Simms fuel injection pumps.
Cooling Type:
Water-cooled
Oil Type:
Refer to manual for specific API service classification and viscosity grade (e.g., SAE 30 or 15W-40).
Wheelbase:
Approximately 70 inches (1778 mm).
Length:
Approximately 120 inches (3048 mm) without implements.
Width:
Approximately 60 inches (1524 mm) at rear wheels.
Operating Weight:
Approximately 3000-3500 lbs (1360-1588 kg) depending on configuration.
Drawbar Horsepower:
Around 28 HP.
Safety Features:
Basic safety features for its era; emphasis on operator skill and proper use of machinery. PTO shielding, brake pedal lock, parking brake.
Active Safety:
Mechanical brakes, steering, clutch, PTO engagement controls.
Passive Safety:
Operator platform, fenders, PTO guards.
Engine Oil Change:
Refer to manual, typically every 100-200 operating hours or annually. Use of straight-weight oil often recommended for older diesels.
Transmission Oil Change:
Refer to manual, usually annually or every 500 hours. Specific gear oil type required.
Engine Oil Spec:
API CD or CE equivalent, SAE 30 or SAE 15W-40 recommended depending on climate. Check manual for precise recommendation.
Transmission Hydraulic Fluid:
Refer to manual for specific MF specification or equivalent (e.g., UTF - Universal Tractor Transmission Fluid, or specific gear oil for gearbox).
Coolant Type:
Water and appropriate anti-freeze mixture for the climate. Consult manual for specific glycol type and concentration.
Common Problems:
Hydraulic leaks, clutch wear, starter issues, fuel injection pump timing and sealing, glow plug reliability (on diesel).
Wear Items:
Brake linings, clutch plates, hydraulic pump seals, bearings.
Grease Points:
Numerous grease points on steering components, linkages, PTO, and axle bearings; detailed in manual.
Brand Origin:
Massey Ferguson has a long history in agricultural machinery, originating from Canada and the UK.
Predecessors:
Successor to the popular Ferguson TE series, incorporating enhancements and different branding.
Development:
The TO20 was part of the transition of Ferguson tractors under the Massey-Harris-Ferguson umbrella, later Massey Ferguson.
Production Years:
Early to mid-1950s (circa 1953-1956 for the TO20 specifically).
Manufacturing Location:
Primarily manufactured in Coventry, England.
