Target User:
Tractor owners, mechanics, agricultural workshops
Value Proposition:
Enables self-repair, saving significant costs on professional servicing
Ease Of Use:
Easy-to-follow step-by-step instructions, pictures, and diagrams
Comprehensiveness:
Covers all services, repairs, and routine maintenance
Accessibility:
Digital format with printable pages for workshop use
Primary Coverage:
Service and Repair
Secondary Coverage:
Routine Maintenance, Troubleshooting, Wiring Diagrams
Estimated Page Count:
Likely extensive, typical for comprehensive service manuals (exact count not provided in product info)
Type:
Workshop Manual (WSM) / Service Repair Manual
Engine:
Detailed repair, overhaul, and troubleshooting of the engine
Fuel System:
Carburetor/injection system, fuel pump, filters, lines
Cooling System:
Radiator, water pump, thermostat, hoses, fan
Lubrication System:
Oil pump, oil filter, oil passages, lubrication points
Transmission:
Gearbox overhaul, clutch, PTO, differential, final drives
Hydraulics:
Hydraulic pump, valves, cylinders, linkages, hitch system
Electrical System:
Starting system, charging system, lighting, ignition (if applicable), wiring diagrams
Steering:
Power steering system, steering linkages, wheels
Brakes:
Brake system components, adjustments, and repair
Axles:
Front and rear axle assemblies, hubs, bearings
Bodywork:
Fenders, hood, operator station, sheet metal repair
Maintenance:
Scheduled maintenance, lubrication, filter replacement
Diagnostics:
Troubleshooting guides for common and uncommon problems
Repair:
Step-by-step repair procedures for all major components
Overhaul:
Complete engine, transmission, and hydraulic system overhauls
Adjustment:
Component adjustments (e.g., valve clearances, brake pedal)
Installation:
Procedures for replacing major components and accessories
Depth:
In-depth, professional quality with step-by-step instructions, pictures, and wiring diagrams
Engine Family:
Perkins (common for this era of David Brown)
Cylinders:
Typically 4 or 6 cylinders for this model range
Displacement:
Likely in the range of 3.5 - 4.5 liters, depending on specific variant (e.g., 3.5L for 1390)
Horsepower:
Approximately 70-80 PTO HP (exact figures vary by specific engine tune and year)
Torque:
Significant low-end torque, characteristic of diesel engines of this era
Injection System:
Typically Lucas CAV or similar mechanical injection pumps
Transmission Type:
David Brown Split-Torque Transmission (DHT) or similar manual gearbox
Gears:
Multiple forward and reverse gears, often with a synchronized mainbox and a high/low range splitter or powershift
Optional Features:
Variations in PTO speeds, potentially creeper gears
Pto:
Standard 540/1000 RPM PTO, likely with independent engagement
Wheelbase:
Typical for a tractor of this class, approximately 80-90 inches (specific value needed from manual)
Operating Weight:
Approx. 6,000-7,000 lbs (unladen, varies with configuration)
Max Allowable Weight:
Significantly higher with ballast and implements
Safety Features:
ROPS (Roll-Over Protective Structure) likely standard or optional depending on year and market, seatbelts
Braking System:
Drum or disc brakes (rear), independent braking, park brake
Operator Station:
Designed for operator safety and visibility
Operator Interface:
Basic mechanical controls, gauges for oil pressure, water temperature, fuel level, ammeter.
Assistance Features:
None beyond standard operational controls; emphasis on mechanical functionality.
Connectivity Options:
N/A (Pre-digital era tractor)
Engine Oil Change:
Typically 100-250 hours, depending on operating conditions and oil type (refer to manual for specifics)
Air Filter Check:
Check daily or weekly; replace as needed
Fuel Filter Replacement:
Typically 250-500 hours or annually
Engine Oil Type:
API CD/CE or equivalent, SAE 15W-40 or 30 (verify with manual)
Hydraulic Fluid:
UTTO (Universal Tractor Transmission Oil) or approved hydraulic oil (verify viscosity and spec with manual)
Coolant:
Ethylene glycol based antifreeze with corrosion inhibitors, 50/50 mix with distilled water
Common Wear Points:
Hydraulic pump wear, clutch wear, PTO spline wear, front axle kingpins
Electrical Concerns:
Older wiring harnesses can degrade; alternator/generator issues possible
