Manual Purpose:
Essential resource for maintenance, repair, and overhaul of David Brown 1390 tractors.
Manual Advantage:
Provides original manufacturer-level detail often missing in generic repair guides.
Data Accuracy:
Written by professionals, ensuring accuracy and clarity.
Cost Savings:
Enables owners to perform repairs and maintenance themselves, saving on labor costs.
Accessibility:
Instant download provides immediate access without shipping delays.
Engine Overhaul:
Detailed step-by-step instructions for engine rebuild and overhaul.
Fuel System:
Diagnosis, repair, and calibration of fuel injection systems and components.
Cooling System:
Radiator, thermostat, water pump, and fan assembly service.
Lubrication System:
Oil pump, filter, and lubrication circuit maintenance.
Transmission And Drivetrain:
Clutch, gearbox, PTO (Power Take-Off), differential, and final drive service.
Hydraulics:
Hydraulic pump, control valve, cylinder, and linkage repair and adjustment.
Electrical System:
Wiring diagrams, starter, alternator, lighting, and accessory service.
Braking System:
Brake adjustments, hydraulic system service, and component replacement.
Steering System:
Power steering pump, cylinder, and linkage service.
Front Axle And Steering Geometry:
Front axle components, kingpins, and steering alignment.
Rear Axle And Hubs:
Rear axle components, hub bearings, and wheel mounting.
Operator Station:
Seat, controls, dashboard, and cab components.
Bodywork And Chassis:
Fenders, hood, chassis frame, and related components.
Routine Maintenance:
Periodic maintenance charts and lubrication schedules.
Troubleshooting:
Diagnostic information and fault-finding procedures for common issues.
Repair Instructions:
Step-by-step repair procedures for all major systems.
Overhaul Procedures:
Comprehensive guides for complete component and system overhauls.
Wiring Diagrams:
Detailed electrical schematics and wiring diagrams.
Adjustments And Calibrations:
Procedures for adjusting clutches, brakes, and hydraulic systems.
Target Audience:
Professional Technicians and Advanced DIY Mechanics
Diagnostic Capability:
Advanced diagnostics and troubleshooting guidance.
Rebuild Capability:
Complete engine, transmission, and hydraulic rebuild instructions.
Engine Type:
Likely a 4-cylinder direct injection diesel engine (common for this era of David Brown).
Engine Manufacturer Details:
Specific engine model designation would be detailed within the manual (e.g., David Brown AD4/55).
Estimated Horsepower:
Typically in the range of 70-80 PTO horsepower, depending on specific engine tune and configurations.
Estimated Torque:
Torque figures would be specific to the engine variant, detailed in the manual.
Fuel Injection Type:
Direct Injection (DI), likely with rotary or inline fuel injection pump.
Transmission Type:
Likely a 12-speed fully synchronized gearbox (David Brown's 'SpeedyShift' or similar).
Optional Transmission Features:
Possible creeper gears or shuttle shift options, detailed in manual.
Pto Options:
Standard and ground speed PTO options, service procedures included.
Overall Length:
Varies by configuration, typically around 3.7 meters (146 inches).
Overall Width:
Varies by track setting, typically around 1.8 meters (70 inches).
Operating Weight:
Approximately 2600-3000 kg (5700-6600 lbs).
Wheelbase:
Specific to configuration, manual will provide precise measurements.
Infotainment Features:
Basic instrumentation: Tachometer, temperature gauge, oil pressure gauge, fuel gauge.
Driver Assistance Features:
Focus on mechanical linkages and controls; no electronic driver assistance features.
Connectivity Features:
No electronic connectivity features; purely mechanical and hydraulic systems.
Engine Oil Change Interval:
Typically 250 hours, but specific interval detailed in manual.
Transmission Oil Change Interval:
Typically 500-1000 hours, manual provides exact schedule.
Engine Oil Specification:
API CD or CE grade, SAE 15W-40 recommended (confirm with manual).
Transmission Hydraulic Fluid:
David Brown Hy-Trans fluid or equivalent UTF (Universal Tractor Transmission) fluid (confirm with manual).
Coolant Type:
Ethylene glycol based antifreeze with corrosion inhibitors (confirm mix ratio and type in manual).
Brake Fluid:
DOT 3 or DOT 4 hydraulic fluid for wet brake system (confirm with manual).
Common Wear Items:
Clutch wear, hydraulic pump seals, PTO clutch engagement, and potential electrical connection issues.
Troubleshooting Focus:
Manual provides guidance on diagnosing and rectifying common operational problems.
David Brown Legacy:
David Brown was a respected manufacturer of tractors known for their robust construction and innovative features.
1390 Positioning:
The 1390 was part of David Brown's '13' Series, representing a substantial and powerful tractor in its class.
Production Period Estimate:
Likely produced in the late 1970s and early 1980s, following David Brown's acquisition by Tenneco.
