Segment Positioning:
The BMW 528i (E28) represented a benchmark in the executive sedan market, offering a blend of performance, luxury, and advanced engineering.
Key Competitors:
Competed with models such as the Mercedes-Benz W123/W124 E-Class, Audi 5000/100, and Jaguar XJ6.
Unique Selling Points:
Renowned for its inline-six engine smoothness, sophisticated chassis dynamics (often referred to as 'The Ultimate Driving Machine'), and build quality.
Owner Benefit:
Empowers owners and independent mechanics to perform accurate diagnostics, preventative maintenance, and complex repairs, saving time and money compared to dealership service.
Primary Coverage:
Mechanical, Electrical, Body, and Maintenance
Specific Systems Covered:
Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Fuel System, Cooling System, Exhaust System, Electrical System, Climate Control, Bodywork, Interior
Estimated Pages:
Approximately 1000+
Type:
Workshop Service Repair Manual
Format:
Digital (likely PDF)
Engine Mechanical:
Detailed disassembly, inspection, and reassembly of the M30 engine block, cylinder head, crankshaft, pistons, connecting rods, camshafts, valve train.
Engine Management Fuel Injection:
Bosch L-Jetronic or Motronic fuel injection system diagnostics, component testing, fuel pump, injectors, sensors (e.g., AFM, TPS, O2 sensor), ECU troubleshooting.
Transmission Drivetrain:
Manual (Getrag 260) and Automatic (ZF 4HP22) transmission repair, clutch service, driveshaft, differential, axle shaft maintenance and repair.
Brakes:
Front and rear brake system repair (disc brakes), hydraulic system bleeding, brake caliper, rotor, and pad replacement, ABS system troubleshooting (if equipped).
Suspension Steering:
Front and rear suspension component replacement (struts, shocks, control arms, ball joints, bushings), power steering system maintenance and repair, steering rack.
Electrical System:
Comprehensive wiring diagrams, component testing, alternator, starter motor, battery, lighting system, fuses, relays, ignition system, starter circuit troubleshooting.
Climate Control HVAC:
Air conditioning system service, refrigerant handling, blower motor, evaporator, condenser, heater core, climate control panel diagnostics.
Bodywork Interior:
Door panel removal, window regulator repair, seat adjustment mechanisms, exterior trim, bumper repair, corrosion prevention.
Scheduled Maintenance:
Detailed service intervals for oil changes, filter replacements, spark plugs, coolant flushes, brake fluid changes, belt inspections and replacements.
Troubleshooting Diagnostics:
Systematic diagnostic procedures for common drivability issues, electrical faults, cooling system problems, and brake performance anomalies.
Repair And Rebuild:
Step-by-step instructions for component removal, repair, overhaul, and installation for major mechanical and electrical systems.
Special Tools:
Identification and usage instructions for specialized BMW tools required for certain repair procedures (e.g., camshaft timing tools, injection pump removal tools).
Torque Specifications:
Includes precise torque specifications for critical fasteners in engine, chassis, and drivetrain components.
Depth Level:
Comprehensive, covering everything from routine maintenance to complete engine and transmission rebuilds.
Diagnostic Capabilities:
Enables diagnosis of complex issues through wiring diagrams, component specifications, and troubleshooting flowcharts.
Schematics Diagrams:
Detailed mechanical diagrams, electrical wiring schematics, and exploded views for component identification and assembly.
Engine Code And Type:
M30B28 - 2.8-liter (2784cc) SOHC Inline-6
Horsepower Output:
Approximately 180-184 hp @ 5800 rpm (varies slightly by year and market)
Torque Output:
Approximately 235-240 Nm (173-177 lb-ft) @ 4200 rpm (varies slightly by year and market)
Fuel Delivery:
Bosch L-Jetronic or Motronic fuel injection
Fuel Type:
Unleaded gasoline (premium octane recommended)
Cooling Type:
Water-cooled, pressurized system with engine-driven fan or viscous fan clutch.
Oil Type And Capacity:
API SG or higher, SAE 15W-40 or 20W-50 recommended. Capacity approx. 6.5 liters (6.9 US quarts) with filter change.
Transmission Type Standard:
Getrag 260 5-speed manual transmission
Transmission Type Optional:
ZF 4HP22 4-speed automatic transmission
Automatic Transmission Features:
Lock-up torque converter for improved highway efficiency.
Manual Transmission Fluid:
API GL-4 SAE 75W-90 or 80W-90 gear oil.
Automatic Transmission Fluid:
BMW ATF fluid (e.g., LT-2 or equivalent) or Dexron III/Mercon compatible fluid. Capacity approx. 4.0 liters (4.2 US quarts) for torque converter refill.
Oil Change Interval:
Every 7,500 to 10,000 miles (12,000 to 16,000 km) or annually, whichever comes first, depending on driving conditions and oil type used.
Coolant Flush Interval:
Every 2 years or 30,000 miles (48,000 km).
Spark Plug Replacement:
Typically every 30,000 to 60,000 miles (48,000 to 96,000 km) for standard plugs, longer for platinum or iridium.
Brake Fluid Type:
DOT 3 or DOT 4 unleaded brake fluid.
Power Steering Fluid:
BMW ATF fluid or Pentosin CHF 11 S (consult manual for specific early/late E28 applications).
Common Wear Items:
Rubber suspension bushings (control arm, sway bar, trailing arm), fuel pump, idle control valve, starter motor, radiator and hoses, window regulators.
Engine Specific Concerns:
Oil leaks from valve cover gasket, oil pan gasket. Timing chain guides (on M30) can wear over time. Fuel distributor issues on early injection systems.
Electrical Issues:
Corrosion on ground points, failing fuel pump relays, worn door lock actuators, intermittent dashboard warning lights.
Bmw Philosophy:
BMW's commitment to performance, engineering excellence, and driver engagement is embodied in the E28 5 Series.
E28 Development:
The E28 was the second generation of the BMW 5 Series, evolving from the E12. It introduced significant improvements in aerodynamics, interior comfort, and technological features.
Manufacturing Locations:
Primarily manufactured in Germany, with some assembly in other international locations.
Production Span:
The E28 generation was produced from 1981 to 1988.
Notable Variants:
Included models like the 524d (diesel), 525e, 535i, and the high-performance M535i and M5 (E28 S38).
