Purpose:
To provide comprehensive repair and maintenance information for the David Brown 1290 tractor, empowering owners and technicians.
Value Proposition:
Offers detailed, manufacturer-level information for a fraction of the cost of dealership service, enabling DIY repairs and informed maintenance.
Content Focus:
Emphasis on practical, actionable repair steps and diagnostic procedures.
Accessibility:
Instant download format provides immediate access to crucial information.
Engine:
Yes, comprehensive coverage of the AD3.152 and A4.236 diesel engines, including disassembly, inspection, assembly, timing, and troubleshooting.
Fuel System:
Yes, including fuel injection pump, injectors, fuel lines, and filters.
Cooling System:
Yes, covering radiator, water pump, thermostat, and hoses.
Lubrication System:
Yes, detailing oil pump, oil filter, oil passages, and lubrication schedules.
Transmission:
Yes, including the David Brown 8-speed constant mesh gearbox, clutch, PTO engagement, and differential.
Hydraulic System:
Yes, covering the David Brown Vari-Lift hydraulic system, pump, control valve, lift arms, and cylinder.
Electrical System:
Yes, including starter motor, alternator, battery, lighting, and wiring diagrams.
Steering System:
Yes, detailing the steering box, linkages, and power steering (if equipped).
Braking System:
Yes, covering rear drum brakes and parking brake mechanisms.
Front Axle:
Yes, including steering joints and wheel bearings.
Rear Axle And Hubs:
Yes, detailing axle shafts, differential, and hub assemblies.
Wheels And Tires:
Yes, including recommended tire sizes and pressures.
Bodywork And Chassis:
Yes, covering fenders, operator's platform, and structural components.
Maintenance:
Yes, detailed periodic maintenance charts, lubrication schedules, and component inspection procedures.
Repair:
Yes, step-by-step repair instructions for all major systems, from minor adjustments to complete overhauls.
Troubleshooting:
Yes, comprehensive diagnostic guides and troubleshooting flowcharts for common issues.
Overhaul:
Yes, detailed overhaul procedures for the engine, transmission, and hydraulic system.
Adjustment:
Yes, including clutch adjustment, brake adjustment, and valve clearance adjustments.
Disassembly And Assembly:
Yes, detailed instructions for dismantling and reassembling all major components and sub-assemblies.
Wiring Diagrams:
Yes, typically includes comprehensive electrical wiring schematics.
Depth:
Professional Level: Suitable for professional technicians due to its in-depth technical detail and comprehensive coverage. Also adequate for experienced DIY mechanics.
Engine Model 1:
David Brown AD3.152
Engine Type 1:
3-cylinder, naturally aspirated, diesel
Bore Stroke 1:
91.5 mm x 115 mm (3.60 in x 4.53 in)
Displacement 1:
2.5 Liters (152 cubic inches)
Compression Ratio 1:
17.5:1
Horsepower Gross 1:
Approx. 63.5 hp (47.3 kW) @ 2200 RPM
Torque Gross 1:
Approx. 150 lb-ft (203 Nm) @ 1300 RPM
Engine Model 2:
David Brown A4.236 (Optional/Later models)
Engine Type 2:
4-cylinder, naturally aspirated, diesel
Displacement 2:
3.9 Liters (236 cubic inches)
Horsepower Gross 2:
Approx. 76 hp (57 kW) @ 2200 RPM
Injection System:
Bosch inline injection pump
Engine Oil Change:
Every 250 hours of operation or annually.
Oil Filter Change:
At every engine oil change.
Air Filter Service:
Check daily in dusty conditions, service every 250 hours.
Fuel Filter Replacement:
Every 500 hours or as needed.
Transmission Oil Change:
Every 1000 hours of operation or every two years.
Hydraulic Oil Change:
Every 1000 hours of operation or every two years.
Engine Oil:
API CD/CE grade, SAE 15W-30 or 10W-30 (depending on temperature). Consult manual for exact specifications.
Transmission Hydraulic Oil:
David Brown HTMA Type 'A' fluid or equivalent. Capacity approx. 37 liters (9.75 US gal).
Coolant:
Ethylene glycol based anti-freeze mixture (50/50) with corrosion inhibitor.
Common Wear Points:
Clutch wear, PTO clutch wear, hydraulic pump and cylinder seals, front axle kingpins and bushes, gearbox synchros (if applicable).
Engine Maintenance:
Regular maintenance of the injection pump and injectors is crucial for optimal performance and fuel economy.
Hydraulic System Concerns:
Loss of hydraulic lift or slow response can indicate worn pump seals, internal leaks in the cylinder, or a faulty control valve.
Manufacturer:
David Brown Tractors Ltd., Meltham, West Yorkshire, England.
Lineage:
Successor to the 1200 series, part of David Brown's 'new range' of tractors introduced in the early 1970s. Represented an evolution in styling and features.
Key Improvements Over Predecessors:
Updated styling, improved hydraulics, and options for more powerful engines.
Manufacturing Location:
Meltham, West Yorkshire, UK.
Acquisition Impact:
David Brown was acquired by Tenneco in 1973, leading to models being rebadged as Case-David Brown. Production continued under this umbrella.
