🏷️ Basic Information Identification Make: BMW Model: 7-Series (E23) Production Years: 1977-1987 Covered Models: 728, 728i, 730, 732i, 733i, 735i, 745i, L7 Codes Chassis Code: E23 👋 Introduction Market Position E23 Segment: Full-size luxury sedan segment, a direct competitor to Mercedes-Benz S-Class and Jaguar XJ of its era. Competitive Analysis E23 Strengths: Known for its advanced engineering, powerful inline-six engines, sophisticated ride and handling, and driver-focused cockpit. Often praised for its robust build quality and technological advancements for the time. Key Features Manual Value Proposition: Provides comprehensive, dual-language technical data essential for maintaining and repairing a classic BMW luxury sedan, making it invaluable for owners, enthusiasts, and independent workshops. Manual Completeness: Guaranteed to be 100% complete and intact, with no missing or corrupt pages, ensuring all necessary information for any repair or maintenance task is present. 📋 Manual Details Coverage Areas Systems Covered: Maintenance, Engine, Engine Electrical, Fuel System, Fuel Tank & Lines, Radiator, Exhaust System, Clutch, Manual Transmission, Automatic Transmission, Gear Shift Mechanism, Propeller Shaft, Front Axle, Steering & Wheel Alignment, Rear Axle, Brakes, Pedals, Wheels & Tires, Body, Body Equipment, Seats, Hood, Sun Roof, Electrical System, Instruments, Lights, Heating & Air Conditioning, Radio & Special Equipment, Equipment & Accessories, Body Cavity Sealing & Undercoating Procedures Included: Repair, Troubleshooting, Diagnostics, Maintenance, Installation, Adjustments, Rebuilds Page Count Total Size Mb: more than 650MB Manual Type Type: Workshop Repair & Service Manual Language Languages: English, German Format File Format: PDF/HTML Searchability: Searchable Printability: Printable Protection Drm Status: DRM-free 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, timing, valve train, lubrication, cooling, fuel injection (Bosch Motronic for later models), emissions control Engine Electrical: Ignition system, starter, alternator, fuel pump, ECU diagnosis and repair Transmission: Manual gearbox (Getrag), Automatic gearbox (ZF), clutch system, shift linkage, driveshaft Suspension Steering: Front and rear suspension components, shock absorbers, springs, control arms, steering box/rack, power steering system, wheel alignment specifications Brakes: Hydraulic system, brake calipers, master cylinder, brake booster, parking brake, ABS diagnosis (where applicable) Body Chassis: Body panel repair, rust prevention, door mechanisms, window regulators, sunroof operation, interior trim, seats, bumpers Electrical Accessories: Wiring diagrams for all circuits, headlights, taillights, interior lighting, power windows, central locking, HVAC controls, radio, instruments, onboard computer Fuel Tank Lines: Includes procedures for fuel tank removal, fuel line inspection and replacement, and fuel filter replacement. Radiator Cooling: Covers radiator removal and installation, coolant flushing, thermostat replacement, water pump service, and fan clutch diagnosis. Exhaust System: Procedures for exhaust manifold repair, catalytic converter replacement (where applicable), muffler and pipe replacement, and exhaust hanger inspection. Pedals Controls: Includes information on brake pedal, accelerator pedal, and clutch pedal assembly adjustments and replacement. Wheels Tires: Information on wheel bearing replacement, tire pressure recommendations, and basic wheel balancing procedures. Body Equipment: Covers door lock mechanisms, window winding mechanisms, mirror adjustments, and basic trim panel removal. Seats Interior: Procedures for seat adjustment mechanisms and potential seat trim repair. Hood Sunroof: Details on hood latch mechanisms, hinge adjustments, and sunroof manual operation and repair. Instruments Gauges: Covers instrument cluster removal, bulb replacement, and diagnosis of faulty gauges (e.g., speedometer, tachometer, fuel gauge). Heating Air Conditioning: Detailed troubleshooting for HVAC system failures, including blower speed control, temperature regulation, and air distribution issues. Radio Special Equipment: Information on factory radio removal and installation, antenna connections, and potential troubleshooting for audio system issues. Equipment Accessories: Covers various optional equipment and accessories, including power seats, central locking systems, and other comfort features. Procedures Included Engine Repair: Complete engine rebuild procedures, piston ring replacement, bearing replacement, cylinder head removal and installation, camshaft timing Transmission Repair: Gearbox removal and installation, internal component replacement, clutch replacement, automatic transmission service and adjustment Brake System Service: Brake pad and disc replacement, caliper overhaul, bleeding the brake system, hydraulic line repair Suspension Steering Service: Ball joint replacement, tie rod end replacement, shock absorber replacement, steering pump service Electrical Diagnostics: Troubleshooting electrical faults using wiring diagrams, component testing, sensor diagnostics Heating Cooling Hv Ac: HVAC system diagnosis and repair, blower motor replacement, heater core replacement, AC system service (where applicable) Engine Tuning: Includes idle speed adjustments, ignition timing settings (where applicable), and fuel mixture adjustments (for carbureted models or early injection systems). Body Resurfacing: Guidance on undercoating application, rustproofing techniques, and cavity sealing for long-term body preservation. Technical Depth Depth: Comprehensive, covering everything from routine maintenance to complete engine and transmission overhauls. Includes detailed diagnostic procedures and troubleshooting trees. Diagnostic Tools: The manual details procedures for using basic hand tools, multimeters for electrical diagnostics, and potentially specific BMW diagnostic tools of the era (though modern OBD scanners would not apply). Torque Specifications: Provides critical torque values for critical fasteners across all major mechanical and chassis components, ensuring proper assembly and preventing damage. Wiring Diagrams: Extensive and detailed wiring diagrams are included for all electrical systems, crucial for diagnosing...