🏷️ Basic Information Identification Make: BMW Models Covered: 3 Series, 5 Series Years Covered: 1983-1991 👋 Introduction Market Position Era Significance: Covers the E30 (3 Series) and E34 (5 Series) generations, iconic BMW platforms known for driving dynamics and build quality Competitive Analysis Value Proposition: Provides essential information for DIY enthusiasts and professional mechanics to maintain and repair these classic BMWs, often superior to generic online resources Key Features Comprehensive Coverage: Detailed diagrams, step-by-step instructions, and troubleshooting guides for a wide range of repair and maintenance tasks 📋 Manual Details Coverage Areas Coverage Type: Comprehensive Service and Repair Page Count Estimated Pages: 1000+ Manual Type Type: Service and Repair Manual Language Language: English Format Format: Digital (Likely PDF) 📖 Manual Coverage Systems Covered Engine: All gasoline and diesel variants including M20, M30, M40, M50, M52, and M51 engines Transmission: Manual (Getrag 260, etc.) and Automatic (ZF 4HP22, etc.) transmissions Drivetrain: Rear-wheel drive system, differentials, driveshafts, CV joints Suspension: Front MacPherson struts, rear multi-link suspension, shock absorbers, springs, control arms, bushings Brakes: Hydraulic system, front and rear disc brakes (solid and vented), ABS (where applicable), parking brake Steering: Power steering system, steering rack, tie rods, steering column Electrical: 12V battery system, alternator, starter motor, ignition system, lighting, dashboard instrumentation, fuse box, wiring diagrams Fuel System: Fuel tank, fuel pump, fuel injectors, fuel pressure regulator, L-Jetronic/Motronic fuel injection systems Cooling System: Radiator, water pump, thermostat, coolant hoses, cooling fan Exhaust System: Exhaust manifolds, catalytic converter (where applicable), mufflers, pipes Body And Chassis: Body panels, doors, windows, seals, chassis components, jacking points Procedures Included Maintenance: Oil changes, filter replacements, spark plug replacement, fluid checks and top-offs, belt inspection and replacement Diagnostics: Troubleshooting common problems, engine performance issues, electrical faults, brake system diagnostics Repair: Engine overhaul, transmission repair, suspension component replacement, brake caliper overhaul, electrical component repair Component Replacement: Detailed step-by-step instructions for replacing major components Technical Specifications: Torque specifications, clearances, diagnostic trouble codes (DTCs) Technical Depth Depth: Advanced diagnostics, component-level repair, and full rebuild procedures 📊 Manual Specifications File Format File Quality: High resolution, searchable text (if PDF) Print Quality Paper Type: Durable, professional-grade paper (if printed) Binding Type Binding: Sturdy binding (e.g., spiral-bound or perfect-bound for printed copies) ⚙️ Engine Specifications Primary Engine 3 Series Common Engines: 2.3L Inline-4 (M20B23), 2.5L Inline-6 (M20B25), 2.7L Inline-6 (M20B27) for models like 323i, 325i, 325e 5 Series Common Engines: 2.5L Inline-6 (M20B25), 3.0L Inline-6 (M30B30), 3.5L Inline-6 (M30B35) for models like 525i, 530i, 535i Performance 325I M20B25 Hp: Approx. 168 hp @ 5800 rpm 325I M20B25 Torque: Approx. 225 Nm (166 lb-ft) @ 4300 rpm 535I M30B35 Hp: Approx. 208 hp @ 5700 rpm 535I M30B35 Torque: Approx. 290 Nm (214 lb-ft) @ 4000 rpm Fuel System Fuel Injection: Bosch L-Jetronic or Motronic fuel injection systems (depending on year and model) Fuel Type: Unleaded gasoline 🔧 Transmission Standard 3 Series Standard Transmission: 5-speed manual (Getrag 260) 5 Series Standard Transmission: 5-speed manual (Getrag 260) Optional 3 Series Optional Transmission: 4-speed automatic (ZF 4HP22) 5 Series Optional Transmission: 4-speed automatic (ZF 4HP22) Features Clutch Type: Hydraulically operated single-plate dry clutch Transmission Fluid Manual: BMW MTF-LT-2 or equivalent (e.g., Red Line MTL) Transmission Fluid Automatic: Dexron III or equivalent 📐 Dimensions Exterior 3 Series E30 Wheelbase: Approx. 2570 mm (101.2 in) 5 Series E34 Wheelbase: Approx. 2760 mm (108.7 in) Weights 325I E30 Curb Weight: Approx. 1300-1400 kg (2866-3086 lbs) 535I E34 Curb Weight: Approx. 1550-1650 kg (3417-3638 lbs) 🛡️ Safety Features Ratings ABS Availability: Available on higher-trim models and later production years Active Features Braking System: Four-wheel disc brakes with internally vented front rotors Passive Features Seat Belts: 3-point inertia-reel seat belts Body Structure: Reinforced safety cell, crumple zones 💡 Technology Features Infotainment Headunit Features: Early models featured basic AM/FM radio, cassette players. Later models offered premium sound systems (e.g., Bavaria C Business/Professional) Driver Assistance Cruise Control: Available as an option on most models Connectivity Early Systems: Limited to analog systems, no modern connectivity features 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500-10,000 miles (12,000-16,000 km) or 12 months, depending on driving conditions and oil used Timing Belt Replacement: For M20 and M30 engines, typically every 30,000-50,000 miles (48,000-80,000 km) or 3-5 years. M40/M42/M50/M52 use chains. Fluid Specifications Engine Oil Specification: Castrol GTX High Mileage 20W-50 or similar quality oil meeting BMW LL-98 or API SG/SH specifications (check specific engine variant) Coolant Specification: BMW Blue Antifreeze/Coolant (G48) or equivalent ethylene glycol-based coolant, mixed 50/50 with distilled water Brake Fluid Specification: DOT 4 Known Issues E30 Common Issues: Subframe cracks, cooling system leaks, rust, fuel distributor issues on M20 (K-Jetronic), oil pan seal leaks E34 Common Issues: Oil separator valve issues, coolant leaks (especially at the thermostat housing), ABS sensor failures, door handle microswitches 📚 Vehicle History Brand Heritage Bmw Philosophy: BMW's reputation for 'The...