Target Audience:
Professional mechanics and experienced owners
Tractor Segment:
Medium-duty utility tractor
Advantage:
Robust construction, reliable engineering, good power-to-weight ratio
Peer Competitors:
Massey Ferguson 100 series, Fordson D series, International Harvester B series, Leyland 253/485
Highlight:
David Brown 3-cylinder diesel engine and 12-speed Selectamatic transmission
Engine:
Complete overhaul, troubleshooting, fuel system (injection pump, injectors), lubrication, cooling system
Transmission:
Gearbox, clutch, PTO, differential, hydraulic lift system, final drive
Hydraulics:
Hydraulic pump, control valve, cylinders, reservoir, filter, troubleshooting, component testing
Electrical:
Wiring diagrams, starter, generator/alternator, battery, lighting, instrumentation, troubleshooting
Chassis & Steering:
Front axle, steering mechanism, brakes (mechanical/hydraulic), rear axle, wheel hubs
Operator Station:
Controls, seat, platform, fenders, dashboard
Maintenance:
Regular service checks, lubrication points, filter replacement, fluid changes
Repair:
Step-by-step disassembly, reassembly, component replacement, adjustments
Troubleshooting:
Systematic diagnostic procedures for common and uncommon faults
Overhaul:
Detailed instructions for complete engine, transmission, and hydraulic unit rebuilds
Skill Level:
Suitable for professional mechanics and experienced owners
Detail:
Comprehensive with step-by-step instructions and specifications
Part Numbers:
Refer to manual for specific part numbers
Diagrams:
Includes exploded views and component identification
Specifications:
Torque settings, clearances, fluid types
File Type:
PDF (Portable Document Format)
Compatibility:
Works on PC, tablet, smartphone
Requirements:
Any modern PDF viewer
Searchable:
Yes, text is searchable
Resolution:
High-resolution for clear text and diagrams
Binding:
Digital download - no physical binding
Digital Features:
Instant download, clickable links (if applicable)
Make / Model:
David Brown 3-cylinder diesel
Displacement:
Approximately 256 ci (4.19 L) - verify exact spec
Horsepower (Drawbar):
Typically 45-55 HP - verify exact spec
Horsepower (PTO):
Typically 50-60 HP - verify exact spec
Injection:
Bosch or CAV inline injection pump (typical for era)
Wheelbase:
Variable, typically 80-85 inches (2030-2160 mm) - verify
Operating Weight:
Approximately 4,500-5,500 lbs (2041-2495 kg) - verify
Front Tire Size:
Commonly 6.00-16 or 7.50-16
Rear Tire Size:
Commonly 12.4/11-36 or 14.9-28
Safety Standards:
Meets safety regulations for its production era; manual covers safety precautions
Braking System:
Mechanical contracting band brakes or hydraulic internal expanding brakes, often with independent rear wheel braking
Operator Protection:
Basic platform, fenders; ROPS may be aftermarket or factory option on later models
Engine Oil Change:
Typically every 250 hours or annually - refer to manual
Hydraulic Fluid Change:
Typically every 500-1000 hours or annually - refer to manual
Engine Oil Type:
API CD or higher, SAE 15W-30 or 10W-30 (depending on climate) - verify
Hydraulic/Transmission Oil:
David Brown HTD (Hydraulic Transmission Fluid)
Common Wear Items:
Refer to manual for common wear items and troubleshooting
