Target Audience:
BMW E28 owners, independent repair shops, DIY enthusiasts seeking in-depth knowledge.
Manual Advantage:
Make, model, and year-specific coverage ensures accuracy, unlike generic manuals. Instant download provides immediate access.
Content Highlights:
Step-by-step diagrams, detailed instructions, electrical schematics, troubleshooting guides, fluid capacities.
Coverage Years:
1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988
Engine Variants Covered:
Primarily M30B25 (2.5L) and M20B27 (2.7L, often found in models like 528i, 535i but manual may cover shared systems for 525i).
Estimated Page Count:
Thousands (typical for comprehensive workshop manuals)
Manual Type:
Service and Repair Manual
Delivery Method:
Instant Download
Engine Systems:
Engine mechanical (block, head, pistons, crank, valves), lubrication, cooling, fuel injection (Bosch L-Jetronic/Motronic), ignition, exhaust
Transmission Systems:
Manual transmission (gearbox), clutch, driveshafts, differential
Suspension Steering:
Front suspension (MacPherson struts, control arms), rear suspension (semi-trailing arms), steering system (power steering)
Brake Systems:
Hydraulic brake system, front/rear disc brakes, parking brake, ABS (if equipped)
Electrical Systems:
Battery, charging system (alternator), starting system (starter motor), ignition system, lighting, switches, wiring diagrams, ECU (Motronic)
Body Chassis:
Body repair, interior trim, exterior trim, body sealing, chassis components
Engine Procedures:
Engine removal/installation, cylinder head overhaul, piston/cylinder inspection, crankshaft/connecting rod service, timing belt/chain service (if applicable), valve adjustment
Transmission Procedures:
Clutch replacement, transmission overhaul (manual), gearshift linkage adjustment
Suspension Steering Procedures:
Suspension component replacement (shocks, springs, bushings), wheel alignment, steering component replacement
Brake Procedures:
Brake pad/rotor replacement, brake caliper service, brake fluid flush, ABS system troubleshooting
Electrical Procedures:
Component testing, wiring harness repair, troubleshooting electrical faults, battery charging, starter motor testing, alternator testing
General Maintenance:
Lubrication, inspection, adjustment, fluid changes, filter replacements
Troubleshooting Coverage:
Diagnostic procedures for various systems, common fault identification, and resolution steps
Depth Of Information:
Comprehensive workshop level, covering diagnostics, repair, rebuilding, and maintenance for all major systems.
Infotainment Systems:
Basic AM/FM radio, cassette player, analog gauges.
Driver Assistance Features:
ABS (optional on some models), power steering, limited electronic aids.
Connectivity Options:
None (pre-digital era).
Engine Control Unit:
Bosch Motronic (fuel injection and ignition timing control).
Oil Change Interval Typical:
Every 5,000-7,500 miles or 6-12 months (synthetic recommended).
Spark Plug Replacement Interval Typical:
Every 30,000 miles (platinum recommended for longer life).
Coolant Flush Interval Typical:
Every 2 years or 30,000 miles.
Engine Oil Type Spec:
API SG/SH, SAE 10W-40 or 15W-50 (check manual for specific recommendations based on climate).
Coolant Type:
BMW Blue or equivalent ethylene glycol-based coolant (50/50 mix with distilled water).
Brake Fluid Type:
DOT 3 or DOT 4.
Transmission Fluid Manual:
GL-4 SAE 75W-90 or 80W-90 gear oil (specific BMW lubricant is best).
Transmission Fluid Automatic:
Dexron III or equivalent.
Common Issues E28:
Rust (wheel arches, rocker panels, battery tray), coolant leaks (hose connections, water pump, heater core), fuel distributor issues (L-Jetronic), accumulator leaks (if equipped), odometer gear failure, window regulator issues, vacuum hose degradation.
Filters Part Numbers Examples
Oil Filter Part Number:
Mann-Filter W920/15, Mahle OX17, Bosch 0451104032 (verify for specific engine).
Air Filter Part Number:
Mann-Filter C24440/1, Mahle LX231 (verify for specific engine).
Bmw Philosophy:
Sport sedan, driver-focused engineering, balanced chassis.
E28 Introduction:
Introduced in 1981 as the successor to the E12. Represented BMW's second generation of the 5 Series executive sedan.
Production Period:
1981-1988
Key Variants Mention:
While the manual is for the 525i, the E28 platform also included models like 518i, 520i, 528i, 535i, and the iconic M535i and E28 M5, sharing many chassis and system components.
