Target Audience:
Farmers and contractors needing a versatile mid-size tractor for heavy tillage and PTO work.
Advantage:
Robust construction, powerful 6-cylinder engine, excellent hydraulic capacity, and comfortable operator platform.
Engine:
4.1L 6-cylinder diesel, 77 hp
Transmission:
12F/4R synchronised gearbox with two-speed PTO
Hydraulics:
Category II 3-point hitch with draft and position control
Engine:
Complete engine overhaul, fuel system, cooling, lubrication (detailed).
Transmission:
Gearbox, clutch, final drives, PTO (detailed).
Hydraulics:
Hydraulic system, 3-point hitch, steering (detailed).
Electrical:
Wiring diagrams, starting/charging systems (detailed).
Brakes:
Brake system, adjustment, repair (detailed).
Axles:
Front and rear axles, differential (detailed).
Power Take-Off (PTO):
PTO drive, speeds, troubleshooting (detailed).
Cab and Controls:
Cab fittings, instrumentation, controls (detailed).
Wheels and Tires:
Tire sizes, wheel installation (standard info).
Disassembly:
Step-by-step instructions for disassembly and reassembly.
Adjustment:
Adjustment procedures for valves, brakes, clutch, etc.
Troubleshooting:
Systematic troubleshooting guides with fault codes where applicable.
Service Schedules:
Maintenance schedules and lubrication charts.
Torque Specifications:
Detailed torque specs for all major fasteners.
Special Tools:
List of required special tools and their usage.
Technical Data:
Specifications for all systems, tolerances, clearances.
Detail Level:
Comprehensive workshop-level detail for professional repair.
Illustrations:
Numerous diagrams, exploded views, and photographs.
Parts Numbers:
OEM part numbers for each component and assembly.
Exploded Views:
Exploded parts diagrams for clear identification.
Compatibility:
Works on Windows, Mac, Linux, iOS, Android, and any PDF reader.
Requirements:
PDF reader software, internet connection for download.
Searchability:
Fully searchable text with bookmarks for quick navigation.
Resolution:
High-resolution 300 DPI for clear printing.
Binding Type:
Digital - no physical binding.
Paper Type:
N/A - digital format; printable on any paper.
Type:
David Brown 4.1L 6-cylinder diesel
Displacement:
4.1 L (250 cu in)
Bore x Stroke:
3.94 x 4.13 in (100 x 105 mm)
Power Output:
77 hp (57 kW) at 2200 rpm
Torque:
196 lb-ft (266 Nm) at 1400 rpm
Fuel System:
Direct injection, mechanical inline pump
Combustion:
4-stroke, naturally aspirated
Lubrication:
Forced feed with full-flow filtration
Type:
12F/4R synchronised gearbox
Gear Ratios:
Close spacing for field and road speeds
Clutch:
Single dry plate, 12 inch
Type:
Power-shift (optional) with 8F/4R
PTO:
Independent two-speed (540/1000 rpm), live
Differential Lock:
Mechanical, engaged on the fly
Brakes:
Hydraulic wet disc, independent for turning
Crash Test Rating:
N/A - not applicable for tractors
Brakes:
Hydraulic disc brakes on rear wheels
Lighting:
Full road lighting, front and rear
Steering:
Power-assisted for reduced effort
Rollover Protection:
Foldable ROPS (Roll-Over Protective Structure) standard
Seatbelt:
Provided for operator safety
Operator Enclosure:
Cab option with safety glass and mirrors
Audio System:
N/A - not applicable for this tractor era
Monitoring:
Basic gauges for engine temperature, oil pressure, fuel level
PTO Operation:
Electro-hydraulic PTO engagement (optional)
Hydraulics:
Position and draft control for 3-point hitch
Engine Oil:
Every 150 hours or annually
Oil Filter:
Every oil change
Hydraulic Oil:
Every 600 hours
Gearbox/Transmission:
Check level every 150 hours; change every 1200 hours
Engine Oil:
SAE 10W-30 or 15W-40 (API CC/SE)
Hydraulic/Transmission:
Dexron III or equivalent UTF
Coolant:
50/50 ethylene glycol/water
Grease:
Lithium-based multi-purpose grease
Known Issues and Common Wear Items
Common Wear:
Clutch plate, brake discs, hydraulic pump seals
Injection Pump:
May require calibration after extended service
Electrical:
Wiring harness degradation over time
Manufacturer:
David Brown Ltd.
History:
British tractor manufacturer with a heritage of engineering excellence since the 1930s.
Predecessor:
David Brown 1200 Selectamatic series
Successor:
Case International 1390 (after acquisition by Case)
Production Period:
1971-1980
Plant:
Metham, West Yorkshire, England
