Target Audience:
Professional technicians and experienced do-it-yourself mechanics.
Manual Content:
Step-by-step repair procedures, critical specifications, illustrations/pictures, maintenance, disassembly, assembly, cleaning, and reinstallation procedures.
Learning Approach:
Teaches factory-trained technician knowledge through detailed guidance.
Benefit:
Enables informed decision-making for maintenance and repair of the David Brown 1690.
Primary Coverage:
Service, Repair, Maintenance
Estimated Page Count:
Extensive (Specific count not provided, but described as comprehensive, covering factory service manual and owner's manual content).
Manual Type:
Service Repair Manual
Scope Of Manual:
Comprehensive, bridging the gap between owner's and factory service manuals.
Engine Systems:
Engine overhaul, fuel system, lubrication system, cooling system, starting and charging system.
Transmission Systems:
Gearbox repair, clutch service, PTO operation, differential service.
Hydraulic Systems:
Hydraulic pump, valve operation, cylinder repair, linkage adjustments.
Electrical Systems:
Wiring diagrams, component testing, starter motor, alternator, lighting system.
Chassis And Suspension:
Front axle repair, steering system, braking system, rear axle service.
Operator Station:
Cab interior components, control linkages, seat adjustment.
Disassembly Assembly:
Detailed step-by-step procedures for major component removal and reinstallation.
Maintenance:
Routine checks, lubrication points, filter changes, fluid level management.
Troubleshooting:
Diagnostic procedures for common faults and malfunctions.
Repair:
In-depth repair instructions for all major systems.
Cleaning And Reinstalling:
Procedures for cleaning components during overhaul and correct reassembly.
Torque Specifications:
Critical torque values for engine and drivetrain fasteners provided.
Diagnostic Capabilities:
Advanced diagnostics for identifying root causes of issues.
Rebuild Procedures:
Comprehensive instructions for complete engine, transmission, and hydraulic rebuilds.
Factory Specifications:
Includes critical specifications and tolerances as per factory standards.
Diagrams And Schematics:
Includes detailed exploded diagrams and electrical schematics crucial for complex repairs.
Engine Type:
Four-cylinder, naturally aspirated diesel engine (specific model likely a David Brown engine, e.g., AD4/55 or similar).
Horsepower Range:
Approximately 60-70 PTO HP (Horsepower varies by specific engine tune and application).
Torque Characteristics:
Designed for robust low-end torque crucial for agricultural applications.
Fuel Injection:
Likely Bosch or Simms inline fuel injection pump.
Oil Type Recommendation:
Specific viscosity grades for engine oil (e.g., SAE 15W/30 or 10W/30 depending on climate).
Coolant Type:
Ethylene glycol based coolant with appropriate anti-corrosion additives.
Engine Displacement Approx:
Around 3.5 - 4.0 Liters.
Gearbox Type:
David Brown 'David Brown In-Line' (DBIL) transmission, likely with multiple speed ranges and synchronized gears.
Power Take Off Pto:
Standard 540/1000 RPM PTO, potentially with an independent PTO option.
Clutch Type:
Dual-stage clutch (one for transmission, one for PTO).
Differential Lock:
Rear differential lock, mechanically operated.
Wheelbase:
Approx. 2337 mm (92 in) (Varies slightly by configuration).
Operating Weight:
Approx. 3000-3500 kg (6600-7700 lbs) (Unladen, depends on configuration).
Towing Capacity:
Not explicitly specified in product info, but designed for heavy draft work.
Rollover Protection:
Often equipped with a ROPS (Roll Over Protection Structure) frame or cab, though not inherently factory standard on all units.
Braking System:
Hydraulically operated disc brakes, typically inboard.
Seatbelt:
Available on later models or aftermarket installations.
Radio:
Optional factory-fitted radio or aftermarket installations.
Instrumentation:
Basic dashboard instrumentation: Tachometer, fuel gauge, engine temperature, oil pressure warning light, ammeter.
Lighting:
Basic road lighting, work lights (often operator-fitted).
Engine Oil Change:
Typically every 250-500 operating hours, depending on operating conditions and oil quality.
Fuel Filter Replacement:
Recommended at 250-500 hours or when service is indicated.
Hydraulic Oil Change:
Typically every 1000-1500 operating hours.
Engine Oil Capacity:
Approx. 9-10 liters (e.g., API CD/CE rated 15W/30).
Hydraulic Transmission Oil:
David Brown Special Transmission Oil (or equivalent UTTO/STOU - check manual for exact spec, approx. 30-40 liters).
Coolant Capacity:
Approx. 12-15 liters.
Transmission Fluid Type:
David Brown Special Transmission Oil (or specified universal tractor transmission fluid - UTTO).
Common Wear Points:
Hydraulic pump wear, clutch wear, front axle kingpin wear, starter motor issues.
Electrical Reliability:
Older wiring harnesses can degrade, leading to intermittent electrical faults.
Manufacturer:
David Brown Tractors Ltd. (UK), later became part of Tenneco (Case IH).
Production Period:
The 1690 model was produced in the late 1970s and early 1980s.
Model Designation:
Part of the '10 Series' of tractors, representing a more powerful and refined offering.
Manufacturing Location:
Meltham, West Yorkshire, England.
