Manufacturer:
Case Corporation (later Case IH, part of CNH Industrial)
Brand Heritage:
Founded by David Brown in the UK, known for quality tractors and agricultural machinery. Acquired by Tenneco in 1973, later becoming part of Case Corporation.
Parent Company:
CNH Industrial
Product Line Codes:
770, 780, 880, 890, 990, 1200, 3800, 4600
Target Audience:
Owners, operators, mechanics, and technicians working on Case David Brown tractors of the specified models.
Value Proposition:
Provides comprehensive, factory-level repair and maintenance information, equivalent to what professionals use, delivered digitally for immediate access and lifetime use.
Content Quality:
Detailed photos, diagrams, step-by-step instructions, exploded views for clarity.
Accessibility:
Instant download for use on computers, tablets, and smartphones.
Manual Scope:
Comprehensive service, repair, and troubleshooting for Case David Brown tractor models 770, 780, 880, 890, 990, 1200, 3800, 4600.
Estimated Page Count:
Hundreds (specific count not provided, but described as 'very detailed').
Type:
Factory Service Repair Workshop Manual
Language:
English (implied by product description and common industry practice for this era).
Delivery Format:
Digital Download (PDF)
Engine Systems:
Engine overhaul, fuel system, lubrication system, cooling system, starting system, electrical system (ignition, charging), exhaust system, troubleshooting.
Drivetrain Systems:
Clutch, transmission (gearbox, power take-off - PTO), final drives, differential, rear axle, front axle (steering and front wheel drive if applicable).
Hydraulic Systems:
Hydraulic pump, control valves, lift arms, draft control, hydraulic fluid specifications, troubleshooting hydraulic issues.
Braking Systems:
Brake system components, service, and repair procedures, parking brake.
Steering Systems:
Mechanical steering, power steering (if equipped), linkage, troubleshooting.
Electrical Systems:
Wiring diagrams, battery, alternator, starter, lighting, gauges, troubleshooting electrical faults.
Body Chassis:
Frame, fenders, operator station, drawbar, hitch, ballast considerations.
Maintenance:
Scheduled maintenance, lubrication points, filter replacement, fluid checks and changes, pre-operation checks.
Repair:
Step-by-step instructions for component removal, overhaul, inspection, and reassembly.
Troubleshooting:
Systematic diagnostics for common and uncommon problems, fault finding charts.
Technical Specifications:
Torque values, clearances, specifications for all major components.
Depth:
Comprehensive, covering everything from basic service to full engine and transmission rebuilds, suitable for professional mechanics.
Searchability:
Likely text-searchable PDF, enhancing usability.
Printable:
Yes, printable (single pages or entire manual).
Binding:
N/A (Digital download, binding is user's choice upon printing).
Paper Type:
N/A (Digital download, paper type is user's choice upon printing).
Usage Rights:
Lifetime use on multiple devices, no expiry dates, no renewal fees.
Operating Systems:
Compatible with Windows and macOS computers.
Engine Family:
David Brown diesel engines (specific variants would depend on model and year).
Displacement Range:
Typically 3-4 liters for models like 770/780/880/890/990, potentially larger for 1200. (Specific figures vary by model).
Horsepower Range:
Approximately 45-80 PTO HP across the listed models. (Specific figures vary by model).
Torque Characteristics:
Designed for robust low-end torque suitable for agricultural applications.
Injection System:
Typically rotary or inline injection pumps (e.g., Simms, CAV, Lucas).
Oil Type Recommendation:
API CD or CE grade diesel engine oil, viscosity typically SAE 15W-40 or 20W-50 depending on ambient temperature. (Refer to manual for precise specifications).
Coolant Type:
Ethylene glycol based antifreeze/coolant with corrosion inhibitors. (Refer to manual for specific ratios).
Transmission Type:
Manual transmission with multiple forward and reverse gears. Often features a synchronized gearbox and a high/low range selector.
Pto Options:
Standard PTO (540 RPM) and sometimes optional ground-speed PTO.
Clutch Type:
Dual-stage clutch (one for transmission, one for PTO).
Transmission Fluid:
API GL-4 or GL-5 gear oil (e.g., SAE 90, SAE 80W-90) for gearbox and differential. Hydraulic fluid for integrated hydraulic systems might be specified separately. (Refer to manual for precise specifications).
Wheelbase:
Varies by model, typically around 80-90 inches. (Refer to specific model documentation).
Operating Weight:
Typically 4,000 - 6,000 lbs (1800 - 2700 kg) depending on configuration. (Refer to specific model documentation).
Drawbar Capacity:
Significant, designed for heavy draft work. (Refer to specific model documentation for ratings).
Operator Interface:
Basic instrumentation including tachometer, oil pressure gauge, coolant temperature gauge, ammeter, and warning lights. No modern infotainment systems.
Operator Aid Features:
Power steering (on some models), PTO engagement, 3-point hitch with draft control.
Engine Oil Change:
Typically every 200-250 operating hours. (Refer to manual for precise interval).
Fuel Filter Replacement:
As required, or every 250-500 hours. (Refer to manual for precise interval).
Air Filter Maintenance:
Service or replace as needed based on operating conditions, typically with a visual inspection every 50-100 hours.
Hydraulic Fluid:
Often universal tractor transmission oil (UTTO) meeting specific standards, or specialized hydraulic fluid. (Refer to manual for precise specifications).
Transmission Fluid Capacity:
Varies significantly by model and transmission type (e.g., 15-25 liters). (Refer to manual for precise capacity).
Common Wear Items:
Clutch wear, hydraulic pump wear, starter motor, alternator, and potential for leaks from seals and hoses due to age.
Electrical System Concerns:
Aging wiring harnesses, corroded connections, and failing gauges can be common issues in older tractors.
Engine Performance Issues:
Can include hard starting, smoking, or loss of power due to worn injectors, pumps, or compression issues.
David Brown Legacy:
These models represent a significant period of David Brown tractor development, known for their robust build and reliable mechanicals, often featuring the distinctive red livery.
Production Era:
These models were primarily produced from the late 1960s through the 1970s and early 1980s.
Manufacturing Location:
United Kingdom (Meltham, Yorkshire).
