Original Market Segment:
Heavy-duty agricultural tractor designed for a wide range of farming operations, including cultivation, harvesting, and transport.
Key Competitors:
Competed with models from John Deere (e.g., 40-series), Massey Ferguson, Fiat, and International Harvester of similar horsepower and capability during its production era.
Prime Mover Engine:
Known for its robust British-designed engine, providing reliable power and torque.
Transmission Options:
Often featured a versatile transmission, potentially including a powershift or synchronized gear-change system for ease of operation.
Hydraulic System Performance:
Equipped with a capable hydraulic system supporting various implements and offering precise control for farm tasks.
Authenticity Claim:
Emphasis on 'Real Factory Manuals' distinguishes from aftermarket or generic publications, implying accuracy and completeness.
Manual Types Included:
Factory Service Manual, Factory Shop Manual, Factory Operators Manual, Factory Parts Manual, Special Equipment Catalog
Service Manual Pages:
Estimated 500+ pages (typical for this class of tractor service manual)
Shop Manual Pages:
Estimated 400+ pages (often integrated with service or a supplementary volume)
Operators Manual Pages:
Estimated 100-150 pages
Parts Manual Pages:
Estimated 300-400 pages (with exploded diagrams and part numbers)
Special Equipment Catalog Pages:
Variable, typically 50-100 pages for specific attachments/options
Primary Manual Type:
Factory Original
Engine Systems:
Engine disassembly, assembly, overhaul, troubleshooting, diagnostics, fuel system, lubrication system, cooling system, intake and exhaust systems.
Transmission Systems:
Powershift transmission (if applicable), gearshift mechanisms, clutch, PTO (Power Take-Off) systems, differential lock, final drives, hydraulic pump and drive.
Hydraulic Systems:
Hydraulic pump, control valves, cylinders, remote hydraulic outlets, hitch control system (e.g., draft control, position control), hydraulic circuit diagrams, troubleshooting, and repair.
Electrical Systems:
Wiring diagrams, starter motor, alternator, battery, lighting systems, ignition system (if applicable), starter circuits, charging circuits, diagnostic procedures for electrical faults.
Steering And Braking:
Power steering system, braking system (e.g., hydraulic disc brakes), parking brake, hydraulic brake system components, bleeding procedures, adjustments, and troubleshooting.
Chassis And Frame:
Front axle, rear axle, suspension components (if applicable), frame structure, mounting points for major components, wheel alignment specifications.
Operator Station:
Cab construction, controls, instrumentation, seat adjustment, HVAC system (if equipped), operator safety features.
Bodywork And Sheetmetal:
Hood, fenders, grille, access panels, mounting of body components.
Maintenance Procedures:
Lubrication schedules, filter replacement, fluid changes (engine oil, transmission fluid, hydraulic fluid, coolant), belt tensioning, battery maintenance.
Repair Procedures:
Step-by-step repair instructions for all major systems, component removal and installation, overhaul procedures for engine, transmission, hydraulics, axles.
Troubleshooting Guides:
Diagnostic flowcharts, symptom-based troubleshooting for common problems, electrical troubleshooting guides, hydraulic system fault finding.
Special Tool Requirements:
Identification of specific tools required for certain repair or maintenance tasks.
Torque Specifications:
Detailed torque values for all critical fasteners and bolted connections.
Adjustment Procedures:
Procedures for adjusting clutch, brakes, hydraulic systems, PTO engagement, linkage.
Parts Identification:
Exploded views, part numbers, and descriptions for all tractor components and sub-assemblies.
Diagnostic Capability:
Comprehensive diagnostics for mechanical, hydraulic, and electrical systems.
Rebuild Capability:
Detailed instructions for complete component rebuilds (engine, transmission, hydraulic pump, etc.).
Specification Detail:
Includes critical specifications such as clearances, tolerances, pressures, flow rates, and electrical parameters.
Engine Make:
David Brown (in-house design, often Perkins sourced for earlier or related models, but David Brown designed for the 1690)
Engine Model:
Likely a 6-cylinder, direct-injection diesel engine (specific model designation would be in the manual)
Displacement:
Typically in the range of 5.5 to 6.5 liters (specific value is critical and found in manual)
Rated Horsepower:
Approximately 90-100 PTO horsepower (exact rating in manual)
Torque Peak:
Significant torque for heavy pulling, specific figures available in manual.
Injection System:
Direct Injection, likely with a Lucas or CAV injection pump.
Cooling Method:
Water-cooled, pressurized system.
Wheelbase:
Typical for this class, ~2.3 to 2.5 meters (refer to manual for exact)
Overall Length:
Approximately 3.7 to 4.0 meters (refer to manual for exact)
Overall Width:
Varies with rear tire size, approximately 1.8 to 2.2 meters (refer to manual for exact)
Operating Weight:
Around 3,500 to 4,500 kg (refer to manual for exact)
Front Axle Weight:
Significant due to engine placement, refer to manual for weight distribution.
Rear Axle Weight:
Substantial, designed for traction, refer to manual for weight distribution.
Engine Oil Change Interval:
Typically 250 hours (verify with manual for specific interval and oil type).
Fuel Filter Replacement:
Recommended every 250-500 hours or annually (refer to manual).
Hydraulic Fluid Change Interval:
Typically 500-1000 hours or annually (refer to manual).
Air Filter Maintenance:
Frequent inspection and cleaning/replacement based on operating conditions (see manual for specific procedure).
Engine Oil Specification:
API CD or CE classification, SAE 15W-40 or 20W-50 recommended (verify exact spec and viscosity in manual).
Hydraulic Fluid Specification:
Tractor Hydraulic Fluid (THF) or equivalent universal tractor transmission oil (UTTO) meeting appropriate specifications (refer to manual).
Transmission Fluid Specification:
Specific THF or UTTO, often shared with hydraulic system (verify in manual).
Coolant Specification:
Ethylene glycol-based coolant with corrosion inhibitors, typically 50/50 mix with distilled water (refer to manual for specific type and capacity).
Common Wear Items:
Hydraulic pump wear, clutch wear, PTO spline wear, potential for early electrical connector corrosion.
Typical Repairs:
Engine overhaul, transmission synchro ring replacement, hydraulic seal replacement, clutch assembly replacement.