Role:
Essential reference for owners, mechanics, and service technicians working on David Brown/Case 770, 870, 970, 1070, 1090, 1170, and 1175 tractors. Crucial for maintaining operational efficiency and longevity.
Value Proposition:
Provides in-depth, factory-level repair and maintenance information, often difficult to find for older agricultural equipment, ensuring accurate and efficient servicing.
Content Overview:
Covers a wide array of tractor models from a significant period of the David Brown and early Case integration, offering a singular resource for a diverse fleet.
Systems Covered:
Axle, Brakes, Clutch, Cooling System, Fuel System, Turbocharger, Differential, Electrical System, Engine, Final Drives, Front Axle System, Hydraulic System, Power Shift Clutch, Power Take-Off (PTO), Steering System, Transmission
Procedures Included:
Service, Repair, Maintenance, Troubleshooting, Technical Information
Estimated Page Count:
Likely 500-1000+ pages, typical for comprehensive workshop manuals of this era.
Type:
Workshop Service/Repair Manual
Searchability:
PDF format typically allows for keyword searching, greatly enhancing the ability to quickly locate specific information within the manual.
Engine:
Detailed breakdown of engine components, lubrication, cooling, fuel delivery (including injection systems, turbocharger specifics), exhaust, and engine overhaul procedures.
Transmission:
Comprehensive coverage of manual and power shift transmissions, including clutch operation, gear selection mechanisms, lubrication, and repair procedures for both main gearbox and auxiliary transmissions.
Hydraulics:
In-depth information on the hydraulic system, including pump operation, valve bodies, cylinders, hoses, reservoir, and controls for implement operation and tractor functions.
Electrical System:
Wiring diagrams, component testing, starter motor, alternator/generator, battery system, lighting, and instrumentation troubleshooting.
Braking System:
Service and repair of mechanical and hydraulic brake systems, including master cylinders, wheel cylinders, brake discs/drums, and parking brake mechanisms.
Steering System:
Coverage of steering linkages, power steering components (if equipped), and overhaul procedures.
Drivetrain And Axles:
Detailed instructions for servicing front and rear axles, differentials, final drives, PTO components, and drive shafts.
Maintenance:
Scheduled maintenance checks, lubrication points, fluid change intervals, and filter replacement procedures.
Troubleshooting:
Diagnostic flowcharts and symptom-based troubleshooting guides for common and uncommon issues across all tractor systems.
Repair And Overhaul:
Step-by-step instructions for component disassembly, inspection, repair, reassembly, and adjustment for all major systems.
Depth:
Comprehensive, covering everything from basic fluid checks and filter replacements to full engine and transmission rebuilds. Includes specifications for torque values, clearances, and alignments.
Diagnostic Capabilities:
The manual includes detailed diagnostic procedures and specifications, allowing for systematic identification and resolution of faults in all tractor systems.
Quality:
Assumed to be high-quality digital reproduction suitable for printing, with clear diagrams and text. Typically includes searchable text for ease of use.
Binding:
N/A (Digital Download)
Paper:
N/A (Digital Download)
Coverage Scope:
This is a comprehensive workshop manual, covering the full spectrum of repair and maintenance, not a condensed guide or owner's manual. It is intended for in-depth technical work.
Engine Types:
Likely features David Brown AD4/354, AD6/354, or similar diesel engines. Specific engine variants will differ across the 770 through 1175 models. The manual should detail these specific engine designations.
Engine Block Material:
Typically cast iron construction for the engine block and cylinder heads, characteristic of diesel engines of this period.
Typical Power Output:
Power outputs range from approximately 50 HP for the 770 to over 100 HP for the 1175/1170 models. Exact HP and torque figures will be model and engine specific within the manual.
Fuel Injection Type:
Typically rotary or inline injection pumps (e.g., Simms, CAV, or Lucas-CAV). Turbocharged variants will have specific intercooler and fuel system adjustments. Manual covers testing and calibration.
Gearbox Type:
Primarily manual transmissions with multiple gear ratios (e.g., 8-speed, 12-speed). Some larger models may have offered synchronized gearboxes or auxiliary gearboxes.
Power Shift:
The manual explicitly mentions 'Power shift clutch', indicating coverage of models or options equipped with powershift transmissions, likely a torque converter-based system or a specific integrated powershift unit.
Pto And Hitching:
Details on PTO operation (540/1000 RPM), clutch engagement, and hydraulic hitch control systems are covered.
Gear Reduction Systems:
Detailed explanation of the gear reduction systems within the transmission and final drives, including lubrication and wear checks.
Wheelbase And Length:
Dimensions vary significantly across the model range. The manual will provide exact wheelbase, length, width, and height specifications for each model. For example, the 770/870 would be smaller than the 1170/1175.
Operating Weight:
Operating weights will range from approximately 4,000 lbs for the 770 to over 8,000 lbs for the 1175. The manual will list exact unladen and operating weights.
Rollover Protection:
While not explicitly stated as a feature of the manual, the manual would cover installation and maintenance of ROPS (Rollover Protective Structures) if factory-fitted or aftermarket options were common for these models. Safety procedures will be emphasized.
Brake Safety:
Details on brake system maintenance for reliable stopping power, and clutch operation for safe gear changes and power engagement.
Operator Station:
Information on operator station ergonomics and controls crucial for safe operation, although advanced safety features like airbags are not applicable to this era of tractors.
Operator Interface:
Basic analog gauges for engine temperature, oil pressure, fuel level, and tachometer. Controls are mechanical levers and pedals. The manual covers their function and maintenance.
Power Steering:
Optional power steering systems are common on larger models and are fully detailed within the hydraulics section for diagnosis and repair.
Pto And Hydraulics Control:
Advanced hydraulic control systems (e.g., position control, draft control) and PTO engagement mechanisms are thoroughly explained, representing the technological features of the era.
Engine Oil Change:
Typically every 250-500 operating hours, depending on operating conditions and oil quality. Manual will specify the exact interval and oil type.
Hydraulic Fluid Change:
Usually every 1000-1200 operating hours. Manual will detail the procedure and filter replacement.
Engine Oil Type:
Typically SAE 15W-30 or 10W-30 diesel engine oil, meeting API CD or CE specifications. Manual will confirm precise viscosity and API rating required.
Hydraulic Fluid Type:
Tractor Hydraulic Fluid (THF), Universal Tractor Transmission Oil (UTTO), or a specified multi-purpose fluid. Capacity will vary by model. Manual will provide exact specifications and capacity.
Transmission Fluid:
Gear oil for manual transmissions (e.g., SAE 90 GL-4) and specific ATF or UTTO for power shift transmissions. Capacities and types will be detailed.
Coolant Type:
Ethylene glycol based antifreeze/coolant, typically a 50/50 mix with distilled water. Manual will specify the correct type and boiling point requirements.
Common Wear Points:
Common areas requiring attention can include clutch wear, hydraulic pump efficiency, PTO clutch engagement, axle seal leaks, and aging electrical components. The manual's troubleshooting sections will address these.
Turbocharger Maintenance:
For turbocharged models, regular inspection of intake and exhaust systems, oil supply, and cooler integrity are crucial. Manual will provide specific checks.
David Brown Legacy:
David Brown was a respected British tractor manufacturer known for robust engineering. The acquisition by Case (later Case IH) integrated these lines into a broader agricultural machinery portfolio.
Series Development:
This series represents a significant range of tractors from the late 1960s through the 1970s, showcasing David Brown's technological advancements, including early adoption of powershift options and turbocharging on larger models.
Manufacturing Era:
These models were primarily produced from the late 1960s to the mid-1970s. The manual covers a period of transition and evolution within the David Brown/Case lineup.
