Target Audience:
Professional technicians and advanced DIY mechanics
Content Comparison:
Similar to factory service manuals and owner's manuals, providing comprehensive guidance.
Learning Objective:
Teaches factory-trained technician knowledge for maintenance and repair.
Historical Competitors:
Ford, Massey Ferguson, John Deere, International Harvester tractors of similar horsepower and era.
Primary Coverage:
Mechanical and electrical repair and maintenance
Estimated Page Count:
Varies by specific publication, typically extensive for comprehensive service manuals.
Type:
Service Manual, Repair Manual, Workshop Manual
Additional Types:
Repair Service Manual, Full Service Manual, Factory Service Manual Repair, Workshop Manual Repair Service
Engine Service:
Comprehensive overhaul, tuning, diagnostics, lubrication system, cooling system, fuel system, exhaust system.
Transmission Service:
Clutch, gearbox, differential, PTO, hydraulic systems related to transmission.
Hydraulic System:
Hydraulic pump, control valves, lift arms, auxiliary services, troubleshooting.
Electrical System:
Wiring diagrams, starting system, charging system, lighting, instrumentation, troubleshooting.
Braking System:
Service, adjustment, and overhaul of braking components.
Steering System:
Mechanical and hydraulic steering, troubleshooting.
Chassis And Suspension:
Front axle, rear axle, wheel bearings, lubrication points.
Bodywork And Cab:
Cab removal, access panels, general maintenance.
Front Axle Service:
Steering joints, kingpins, wheel hubs, and associated lubrication.
Rear Axle And Brake Assembly:
Final drive, differential lock, brake mechanisms, and related lubrication.
Operator Controls And Instruments:
Detailed explanation of all levers, pedals, and dashboard gauges.
Routine Maintenance:
Lubrication schedules, fluid level checks, filter replacements, daily inspections.
Disassembly And Assembly:
Step-by-step instructions for component removal and reinstallation.
Troubleshooting:
Diagnostic flowcharts and symptom-based repair guidance.
Technical Specifications:
Torque values, clearances, fluid capacities, engine timings.
Cleaning And Reinstalling:
Procedures for cleaning components during overhaul and correct reinstallation.
Depth:
Professional technician level with detailed diagnostic procedures and overhaul instructions.
Engine Family:
Perkins (Commonly fitted to David Brown tractors of this era)
Engine Displacement:
Typically in the 3.0 - 4.0 liter range for this model series (e.g., Perkins 3.9L AD3.152 or A4.236 variants).
Engine Type:
Diesel, naturally aspirated (turbocharged variants may exist).
Engine Cylinders:
Typically 3 or 4 cylinder diesel.
Horsepower Range:
Estimated 60-75 HP (specific to engine variant and tuning).
Injection System:
Rotary or Inline injection pump (e.g., CAV, Bosch).
Gearbox Type:
Manual, constant mesh, with multiple forward and reverse gears.
Number Of Gears:
Often 8 forward and 4 reverse gears, or similar configurations, potentially with a creeper range.
Powershift Options:
Some models might have had optional powershift or high-low range gearboxes.
Pto:
Standard Power Take-Off (PTO) options (e.g., 540 RPM, 1000 RPM, or ground speed PTO).
Engine Oil Change:
Typically every 250-500 operating hours, depending on operating conditions and oil specification.
Air Filter Service:
Check and clean/replace as needed based on operating environment, often at 100-250 hours.
Fuel Filter Replacement:
Typically annually or every 250-500 hours.
Engine Oil Type:
API CD or CE rated diesel engine oil, SAE 15W-40 or 30 (depending on temperature).
Hydraulic Fluid Type:
Universal Tractor Transmission Oil (UTTO) or specific David Brown approved fluid. Check manual for exact specification.
Transmission Fluid Type:
UTTO or equivalent, as specified in the manual.
Engine Oil Capacity:
Approximately 8-10 liters (specific to engine variant).
Hydraulic Leaks:
Common issue with aged seals and hoses in the hydraulic system.
Clutch Wear:
Normal wear item, replacement procedures detailed in the manual.
Electrical Gremlins:
Aging wiring harnesses and connections can lead to intermittent faults.