Target Audience:
Farm tractor owners, mechanics, agricultural workshops, and enthusiasts seeking to maintain and repair their Case IH 1690 (David Brown) tractor.
Key Benefit:
Enables self-maintenance and repair, leading to significant cost and time savings compared to professional servicing.
Manual Advantage:
Provides step-by-step guidance for complex repairs, aids in troubleshooting, and supports preventative maintenance, making it an essential tool for keeping the tractor operational.
Navigational Aids:
Detailed index and clear chapter organization for efficient information retrieval.
Systems Covered:
Axle, Brakes, Clutch, Cooling System, Differential, Electrical System, Engine (Assembly, Cylinders, Timing, Valves), Final Drive, Transmission, Front System and Steering, Governor (Diesel, LP-Gas), Lift System, LP-Gas System, Power Take-Off, Steering Gear, Torque Recommendations
Estimated Page Count:
Varies significantly based on specific manual edition; typically 500+ pages for a comprehensive service manual.
Manual Type:
Service Repair Manual
Language:
English (presumed, typical for this manufacturer's manuals)
Engine Systems:
Engine assembly, cylinder head removal and installation, valve adjustment, timing procedures, piston and connecting rod service, crankshaft and bearing inspection, lubrication system, cooling system (radiator, water pump, thermostat), fuel system (injection pump, injectors for diesel; LP-Gas system components), governor system.
Drivetrain Coverage:
Clutch service (single/dual plate), transmission overhaul (gearbox, synchronizers, bearings), differential service, final drive assemblies, axle repair (front and rear), PTO (Power Take-Off) engagement and gearbox service.
Chassis Coverage:
Brake system diagnosis and repair (drum/disc, hydraulic actuation), steering system overhaul (steering gear, linkage, power steering components if applicable), front axle and kingpin service, hydraulic lift system (3-point hitch, implement control).
Electrical Coverage:
Wiring diagrams, starter motor, alternator/generator, battery service, lighting system, ignition system (if applicable, less common on later diesel models), instrument panel diagnostics.
Repair Procedures:
Step-by-step repair instructions for all major systems, including disassembly, inspection, repair, reassembly, and adjustment.
Maintenance Procedures:
Scheduled maintenance tasks, lubrication points, fluid change recommendations, filter replacement guidelines, preventative maintenance checks.
Troubleshooting Guides:
Diagnostic procedures for common faults and performance issues across all systems.
Depth Of Coverage:
Comprehensive, covering everything from basic adjustments to complete component overhauls and rebuilds. Includes detailed specifications and tolerances.
Searchable Text:
Likely searchable if originally produced as digital text or scanned with OCR.
Print Quality:
Printable. Quality of original illustrations will dictate final print clarity.
Illustration Detail:
Dozens of detailed illustrations, including exploded views for visual guidance on disassembly and reassembly.
Index:
Detailed index for quick navigation.
Service Data:
Condensed service data information provided.
Recommended Reader:
Adobe PDF Reader (for optimal display of images/graphics)
Engine Type:
Likely a 4-cylinder or 6-cylinder diesel engine, typical for this size and era of tractor. Specific engine codes (e.g., David Brown AD4/48, AD6/55 series or later Perkins equivalents) would be confirmed in the manual.
Horsepower Range:
Estimated 70-90 PTO HP (Power Take-Off Horsepower), depending on specific engine and configuration. Base tractor horsepower might be slightly lower.
Torque Characteristics:
Emphasis on strong low-end torque for pulling power in agricultural applications. Specific torque figures would be listed in the manual.
Fuel System Type:
Diesel fuel injection system (typically rotary or inline injection pump) and potentially an LP-Gas (LPG) fuel system variant.
Cooling System Type:
Pressurized liquid cooling system with thermostat control.
Lubrication System:
Forced lubrication via oil pump, oil filter, and sump. Specific oil specifications (viscosity grade, API classification) are critical and detailed in the manual.
Timing Mechanism:
Typically gear-driven or chain-driven camshaft and timing gears for precise valve and injection timing.
Transmission Type:
Constant mesh, sliding gear transmission with multiple forward and reverse speeds. Often a 12-speed or 16-speed gearbox.
Power Shuttle Or Creeper:
May have optional powershift or creeper gear options depending on the specific configuration and market. Synchromesh on some gears likely.
Pto Options:
Multiple PTO speed options (e.g., 540 RPM, 1000 RPM) are common, with service details provided.
Transmission Fluid Type:
Requires specific tractor hydraulic/transmission fluid (e.g., API GL-4, SAE 80W-90 or similar universal tractor transmission fluid - UTTO). Manual will specify exact type and capacity.
Overall Length:
Highly variable depending on specific configuration (e.g., front weights, tire size, hitch type). Estimated 140-170 inches (355-430 cm) without implements.
Overall Width:
Variable based on rear tire size. Estimated 70-90 inches (178-228 cm) at rear axle.
Operating Weight:
Estimated 6,000-8,000 lbs (2,700-3,600 kg) without ballast or implements.
Wheelbase:
Approximately 85-95 inches (215-240 cm) depending on front axle configuration.
Rollover Protection Structure:
ROPS (Roll-Over Protective Structure) likely a factory or dealer-installed option. Seatbelt required with ROPS. Manual will cover ROPS installation and safety precautions.
Braking System:
Hydraulic or mechanical disc/drum brakes, differential lock for enhanced traction during braking and in slippery conditions.
Operator Station:
Designed with operator visibility and ergonomics in mind. Manual will detail safety checks for controls and instrumentation.
Operator Interface:
Basic analog gauges for engine RPM, temperature, oil pressure, and fuel level. Functional and straightforward operator controls.
Traction Control:
Mechanical differential lock engaged via pedal or lever for improved traction.
Instrumentation:
Core instrumentation for monitoring engine and operational status. No advanced electronic controls or telematics typical of modern tractors.
Engine Oil Change:
Typically every 250-500 operating hours, or annually, depending on operating conditions. Manual will specify.
Transmission Fluid Change:
Usually every 1000-1500 operating hours. Manual will detail exact interval and procedure.
Air Filter Service:
Check daily, service as needed based on operating environment. Replace at recommended intervals or when restricted.
Engine Oil Specification:
Likely SAE 15W-40 API CD/CE or higher performance diesel engine oil. Manual will confirm specific API rating and viscosity.
Coolant Specification:
Ethylene glycol-based antifreeze mixed with distilled water at a 50/50 ratio for freeze protection and corrosion inhibition. Manual will specify type and capacity.
Hydraulic Fluid Specification:
Likely UTTO (Universal Tractor Transmission Oil) or a dedicated hydraulic oil. Capacity and type are critical and found in the manual.
Common Wear Points:
Wear in transmission synchronizers, clutch wear, potential leaks from hydraulic seals and PTO shaft. Steering components can also wear over time.
Engine Maintenance:
Proper fuel filtration and water separation are crucial for diesel injection systems. Valve adjustments are critical for performance and longevity.
Electrical Checks:
Regular inspection of wiring harnesses for chafing, loose connections, and corrosion. Battery terminal cleaning and tightening.
David Brown Legacy:
The 'David Brown' designation signifies its heritage from the renowned British tractor manufacturer, which was integrated into Case IH.
Case Ih Integration:
The 1690 represents a model developed during the transition or post-acquisition period, combining David Brown engineering with Case IH branding and potentially updated features.
Manufacturing Location:
Likely manufactured in the UK (David Brown heritage) or potentially other Case IH global manufacturing sites.
