🏷️ Basic Information Identification Make: BMW Model: 535i / M535i Model Code: E28 Production Years Covered: 1985, 1986, 1987, 1988 Codes Engine Code 535I: M30B34 Engine Code M535I: M30B34 (tuned) 👋 Introduction Market Position Segment: Executive Sedan Era: Mid-1980s Performance Luxury Competitive Analysis Competitors: Mercedes-Benz W124 E-Class, Audi 100/200, Jaguar XJ Key Features Driving Dynamics: Renowned for balanced handling and driver engagement, characteristic of BMW's 'Ultimate Driving Machine' ethos. Engine Performance: Smooth and powerful inline-six engines, offering strong torque delivery. Build Quality: Solid construction and high-quality materials, contributing to longevity. Design Era: Iconic Bertone-designed exterior, blending classic BMW aesthetics with a more angular modern design. 📋 Manual Details Coverage Areas Coverage: Comprehensive Service and Repair Page Count Estimated Page Count: 800-1000+ (estimated for complete E28 series, specific to 535i/M535i variants) Manual Type Manual Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine teardown, rebuild, component inspection, timing, valve adjustments, oil pump, cooling system. Fuel System: Fuel injection (Bosch Motronic), fuel pump, injectors, fuel pressure regulator, fuel tank, lines. Engine Management: ECU diagnosis, sensor testing, ignition system, emissions control. Transmission Manual: Getrag 265 (dogleg optional on M535i), clutch system, gear selection, rebuild procedures. Transmission Automatic: ZF 4HP22 (common on 535i), fluid checks, cooler lines, rebuild procedures. Drivetrain: Driveshaft, universal joints, differential, axle shafts. Suspension: Front struts, rear trailing arms, bushings, springs, dampers, sway bars, power steering system. Brakes: Front/rear discs, ABS (if equipped), brake lines, calipers, master cylinder, parking brake. Electrical System: Wiring diagrams, charging system (alternator, starter), lighting, instruments, power windows, central locking. Climate Control: HVAC system, blower motor, evaporator, heater core, refrigerant handling. Body And Chassis: Body panels, doors, hood, trunk, interior trim, bumpers, glass replacement. Diagnostics: Troubleshooting charts, diagnostic codes (for relevant systems), component testing procedures. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug service, fluid checks and top-offs, belt adjustments. Major Repairs: Engine rebuilds, transmission overhaul, suspension component replacement, brake system repairs. Electrical Diagnostics: Troubleshooting wiring issues, component testing using multimeters and oscilloscopes. Component Rebuild: Detailed instructions for rebuilding components like alternators, starters, fuel pumps, brake calipers. Specifications Data: Torque values, clearances, fluid capacities, electrical resistances, performance data. Technical Depth Depth: In-depth mechanical and electrical repair, including full engine and transmission rebuilds. 📊 Manual Specifications File Format File Type: PDF Searchability: Fully searchable text Printability: Printable pages Print Quality Image Resolution: High-resolution diagrams and illustrations Binding Type Binding: N/A (Digital) Paper Type Paper Quality: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Inline-6 Cylinder Displacement: 3.4 Liters (3430 cc) Bore X Stroke: 92.0 mm x 86.0 mm Compression Ratio: 8.0:1 or 9.0:1 (depending on market/specific tuning) Performance Horsepower 535I: 182 hp @ 5500 rpm Torque 535I: 220 lb-ft @ 3500 rpm Horsepower M535I: 211 hp @ 5500 rpm Torque M535I: 228 lb-ft @ 3500 rpm Fuel System Fuel Delivery: Bosch Motronic Fuel Injection Fuel Type: Unleaded Premium Gasoline (91 Octane or higher) Cooling System Coolant Capacity: Approx. 8.5 Liters (8.9 Quarts) Coolant Type: Ethylene glycol-based antifreeze 🔧 Transmission Standard Transmission Type: 4-Speed Automatic (ZF 4HP22) Optional Transmission Type Optional: 5-Speed Manual (Getrag 265) Manual Transmission Features: Dogleg first gear pattern (on M535i, optional on others) Automatic Fluid Automatic Transmission Fluid Type: Dexron III (or equivalent specification) Manual Fluid Manual Transmission Fluid Type: GL-4 75W-90 (or equivalent specification) 📐 Dimensions Exterior Wheelbase: 103.7 inches (2634 mm) Length: 185.6 inches (4714 mm) Width: 69.4 inches (1763 mm) Height: 54.7 inches (1390 mm) Weights Curb Weight 535I: Approx. 3500-3700 lbs (1588-1678 kg) Curb Weight M535I: Approx. 3600-3800 lbs (1633-1724 kg) Gvw: Approx. 4500-4700 lbs (2041-2132 kg) Wheels Tires Wheel Bolt Pattern: 5 x 120 mm Standard Wheel Size: 14 or 15 inch alloy wheels Standard Tire Size: 205/70VR14 or 225/60VR14 🛡️ Safety Features Ratings NHTSA Rating: Not rated under modern comprehensive testing protocols, but known for robust chassis. Active Features ABS: Anti-lock Braking System (optional, standard on later M535i models) Traction Control: Not typically available on these models Passive Features Airbags: Driver airbag optional, passenger airbag not typically available. Seat Belts: 3-point front seat belts, 2-point rear lap belts (optional 3-point rear available). Crumple Zones: Designed with front and rear crumple zones for improved impact absorption. 💡 Technology Features Infotainment Audio System: Period-correct Blaupunkt or BMW Bavaria cassette radios with AM/FM, often with upgraded speaker systems. Navigation: Not available. Driver Assistance Cruise Control: Standard on most models. Onboard Computer: Optional 'Check Control' system for basic vehicle diagnostics and warning lights. Connectivity Connectivity Features: None (pre-digital era). 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000-7,500 miles or 6-12 months, whichever comes first. Spark Plug Replacement: Every 30,000 miles (copper plugs); longer for platinum/iridium if applicable to the specific build. Coolant Flush: Every 2-3 years or 30,000 miles. Transmission Fluid Change: Automatic: Every...