Target Audience:
Owners, operators, and mechanics of David Brown 1390 Tractors seeking comprehensive repair and maintenance information.
Value Proposition:
Enables significant cost savings by empowering users to perform their own repairs and maintenance, reducing reliance on external service providers.
Ease Of Use:
Features very easy-to-follow step-by-step instructions to simplify complex repair tasks.
Completeness Of Information:
Covers all services and repairs, including routine maintenance, offering a complete information package.
Accessibility:
Instant download to PC, with printable pages for workshop use, protecting the original digital file.
Coverage Summary:
Comprehensive repair and service for the David Brown 1390 Tractor, including routine maintenance, diagnostics, and major component overhauls.
Estimated Page Count:
High (Typical WSMs of this era are extensive, likely 500+ pages)
Manual Type:
Workshop Service Manual (WSM)
Delivery Method:
Instant Download
Software Requirements:
Adobe PDF Reader
Operating System Compatibility:
All Versions of Windows & Mac
Engine Service:
Full overhaul, tuning, fuel system, lubrication system, cooling system, exhaust system.
Transmission Service:
Gearbox overhaul, clutch, PTO, differential, drive shafts, hydraulic lift system.
Electrical System:
Wiring diagrams, starter, alternator, lighting, instrumentation, battery.
Hydraulic System:
Hydraulic pump, valves, cylinders, remote controls, linkage.
Chassis And Steering:
Front axle, rear axle, steering system, brakes.
Body And Cab:
Body panels, cab structure, seating, controls.
Routine Maintenance:
Oil changes, filter replacements, lubrication points, adjustments.
Diagnostic Troubleshooting:
Step-by-step troubleshooting guides for common and uncommon issues.
Repair And Rebuild:
Detailed procedures for disassembling, inspecting, repairing, and reassembling all major components.
Technical Specifications And Data:
Torque values, clearances, fluid capacities, tolerances.
Depth Of Information:
In-depth, professional quality, suitable for experienced mechanics and dedicated DIY enthusiasts.
Visual Aids:
Includes step-by-step instructions with pictures and wiring diagrams.
Engine Manufacturer:
David Brown (Engine manufactured by David Brown or licensed)
Engine Configuration:
Likely a 3 or 4-cylinder naturally aspirated diesel engine, typical for this class of tractor.
Engine Displacement:
Typically in the range of 3.0 - 4.5 Liters (exact specification would be in the manual).
Horsepower Rating:
Likely in the 60-80 PTO HP range (exact specification would be in the manual).
Fuel Injection System:
Likely a direct injection system with a rotary or inline injection pump.
Transmission Type:
Manual Synchromesh Gearbox
Number Of Gears:
Likely 8 or 12 forward gears and 2 or 4 reverse gears, depending on specific configurations (e.g., with or without creeper gears).
Optional Transmission Features:
Potential for a partial powershift or a creeper gear option.
Power Take Off Pto:
Standard 540/1000 RPM PTO, or a ground-speed PTO option might be available and covered.
Wheelbase:
Specific dimensions would be detailed in the manual, but typical for this size tractor.
Overall Length:
Specific dimensions would be detailed in the manual.
Overall Width:
Specific dimensions would be detailed in the manual, adjustable depending on rear wheel spacing.
Operating Weight:
Typically around 2500-3500 kg (unballasted), specific to configuration.
Engine Oil Change Interval:
Typically 250 hours or annually (specific to engine oil type and usage).
Transmission Oil Change Interval:
Usually 1000-1200 hours for major hydraulic and transmission fluid changes.
Engine Oil Specification:
API CD or CE service category, SAE 15W-40 or 10W-30 depending on ambient temperature. (Exact spec in manual).
Transmission Hydraulic Fluid:
David Brown Specification UTTO (Universal Tractor Transmission Oil) or equivalent. Specific viscosity and brand recommendations in manual.
Coolant Specification:
Ethylene glycol-based antifreeze/coolant with corrosion inhibitors, typically a 50/50 mix with distilled water.
Common Wear Items:
Clutch wear, PTO spline wear, hydraulic lift cylinder seals, front axle kingpin wear, exhaust manifold cracks due to heat cycles.
Electrical System Quirks:
Corrosion on electrical connections, particularly in older models, can lead to intermittent issues with lighting and instrumentation.
Manufacturer Legacy:
David Brown Tractors was a well-regarded British manufacturer known for robust and reliable agricultural machinery.
Model Series Context:
The 1390 is part of the David Brown range from the late 1970s and early 1980s, representing a strong, medium-horsepower tractor.
Production Period:
Likely produced from the late 1970s into the mid-1980s, before significant integration with Case IH.
