🏷️ Basic Information Identification Make: David Brown Brand: Case Model: David Brown AD4 Series Diesel Engine Engine Model: AD4 25 Engine Model Variant: CAD4 30 Codes Manual Product Code: AD4 25 CAD4 30 Series Workshop Service & Repair Manual # 1 Download PDF 👋 Introduction Market Position Target Audience: Farm machinery mechanics, agricultural equipment repair specialists, owners of Case David Brown tractors and equipment Competitive Analysis Value Proposition: Provides essential, detailed technical information to maintain and repair valuable agricultural machinery, reducing reliance on costly dealer services. Key Features Comprehensiveness: Covers all aspects of the AD4 25 and CAD4 30 diesel engines for effective workshop service. Detail Level: In-depth, highly detailed information crucial for accurate diagnostics and repairs. 📋 Manual Details Coverage Areas Primary Coverage: Case David Brown AD4 25 and CAD4 30 Series Diesel Engines Secondary Coverage: Maintenance, Troubleshooting, Repair, and Overhaul Procedures Page Count Estimated Page Count: Extensive (Exact count not specified, but implied to be comprehensive for workshop service) Manual Type Type: Workshop Service & Repair Manual Language Language: English (Implied by standard industry practice for such manuals) Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Cylinder head, block, pistons, connecting rods, crankshaft, camshaft, valve train, timing gears/belts, lubrication system, cooling system Fuel System: Fuel injection pump, injectors, fuel lines, filters, governors Lubrication System: Oil pump, oil filter, oil passages, oil pressure regulation Cooling System: Water pump, radiator, thermostat, coolant passages, fan drive Starting System: Starter motor, engagement mechanisms Exhaust System: Exhaust manifold, exhaust pipes, mufflers Air Intake System: Air cleaner, intake manifold, turbocharger (if applicable) Procedures Included Disassembly Assembly: Complete engine disassembly and reassembly procedures with torque specifications Maintenance: Routine checks, fluid changes, filter replacements, belt adjustments Troubleshooting: Diagnostic charts, common fault identification, and corrective actions Rebuilding Overhauling: Engine overhaul procedures, component replacement, clearance measurements Component Testing: Testing of fuel injectors, fuel pump, lubrication system components Technical Depth Depth: Comprehensive (Suitable for professional mechanics and skilled DIY users) Diagnostic Capability: Advanced diagnostic procedures for engine performance issues Repair Scope: From minor adjustments to complete engine rebuilds 📊 Manual Specifications File Format Format: PDF Searchability: Searchable text (Expected for quality PDF manuals) Print Quality Quality: High-resolution (Assumed for workshop use) Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Four-cylinder, naturally aspirated or turbocharged diesel engine Bore: Typically around 91.5 mm (3.60 inches) - based on common configurations for this era Stroke: Typically around 102 mm (4.02 inches) - based on common configurations for this era Displacement: Approximately 2.6 to 2.8 liters (159 to 171 cubic inches) - based on common configurations Compression Ratio: Typically in the range of 16.5:1 to 17.5:1 Performance Horsepower Ad4 25: Approx. 45-55 HP (Varies by application and tuning) Horsepower Cad4 30: Approx. 50-65 HP (Varies by application and tuning, likely a slightly higher output variant) Torque: Specific torque figures vary significantly by application, but generally strong low-end torque is characteristic. Fuel System Injection Type: Direct injection or indirect injection (depending on specific model variant) Fuel Pump: Bosch or CAV rotary or inline injection pumps commonly used Fuel Type: Diesel Fuel Filter Type: Cartridge type, spin-on 🔧 Transmission Standard Transmission Type: Manual gearbox (typically constant mesh, multi-speed) Optional Transmission Options: Some models might feature a synchronized gearbox or power take-off (PTO) options. Features Gear Selection: Direct shift, often with a transfer case or range splitter for increased gear options 📐 Dimensions Exterior Engine Dimensions: Varies greatly depending on the specific tractor/vehicle model. Engine itself is compact for its power output. Weights Engine Weight: Typically in the range of 250-350 kg (550-770 lbs), depending on ancillaries. 🛡️ Safety Features Ratings Safety Standards: Industrial and agricultural vehicle safety standards of the era Active Features Active Safety: Reliable braking systems (typically drum or disc), steering systems. Manual emphasizes proper operation for safety. Passive Features Passive Safety: Operator protection based on vehicle frame and guarding, as per agricultural safety norms. 💡 Technology Features Infotainment Infotainment Systems: N/A (Designed for agricultural machinery, no infotainment systems in the modern sense) Driver Assistance Driver Assistance Features: N/A (Focus on mechanical reliability and operator control) Connectivity Connectivity Options: N/A (Purely mechanical and functional) 🔧 Maintenance Service Intervals Oil Change Interval: Typically 250-500 hours, depending on operating conditions and oil type specified. Fuel Filter Replacement: Recommended every 250-500 hours or as needed if fuel quality is suspect. Air Filter Cleaning Replacement: Inspect regularly, clean or replace as needed based on operating environment (dusty conditions require more frequent checks). Coolant Change Interval: Typically every 1-2 years or 1000-2000 hours, using appropriate coolant. Fluid Specifications Engine Oil Grade: API CD or CE classification, SAE 30 or 15W-40 (depending on climate and manufacturer recommendation) Engine Oil Capacity: Approximately 7-9 liters (7.4-9.5 US quarts), depending on specific engine configuration. Coolant Type: Ethylene...