Positioning:
The BMW 5 Series (E34) represented BMW's entry into the mid-size luxury executive segment, competing with rivals like Mercedes-Benz E-Class and Audi 100/200. The 518/518i served as the entry-level model, offering BMW's renowned driving dynamics and build quality at a more accessible price point.
Competitors:
Mercedes-Benz W124 E-Class, Audi 100/200 (C3/C4), Jaguar XJ6, Saab 9000.
Vehicle Appeal:
Emphasis on driver engagement, balanced chassis, quality interior materials, and understated luxury. The 518/518i offered a more fuel-efficient entry into the E34 experience.
Manual Value Proposition:
Provides essential, in-depth technical guidance for maintaining and repairing the BMW 518/518i, empowering owners and independent mechanics with the knowledge previously exclusive to authorized dealerships.
Primary Coverage:
BMW 518 and 518i (E34 Chassis)
Specific Models Covered:
518, 518i
Estimated Page Count:
Approximately 500-800 pages (typical for comprehensive workshop manuals of this era)
Type:
Service and Repair Workshop Manual
Format:
Print (assumed, given historical context of 'used by mechanics')
Powertrain:
Engine Mechanical, Fuel System, Ignition System, Cooling System, Exhaust System
Drivetrain:
Clutch, Manual Transmission, Driveshafts, Differential
Chassis:
Suspension (Front & Rear), Steering System, Brakes (Hydraulic, ABS if equipped), Wheels & Tires
Electrical:
Starter System, Charging System, Lighting System, Ignition System, Instrumentation, HVAC Controls, Power Accessories (windows, locks, etc.)
Body:
Body Panels, Doors, Hood, Trunk, Interior Trim, Glass
Maintenance:
Scheduled Maintenance, Oil Changes, Filter Replacements, Spark Plug Replacement, Belt Adjustments
Diagnostics:
Troubleshooting Charts, Symptom-Based Diagnosis, Component Testing Procedures
Repair:
Engine Overhaul, Transmission Removal/Installation, Brake Caliper Rebuild, Suspension Component Replacement, Electrical Component Repair
Adjustment Calibration:
Valve Clearance Adjustment, Idle Speed Control Adjustment, Brake Bleeding
Depth:
Comprehensive, suitable for professional mechanics and advanced DIY enthusiasts. Covers removal, disassembly, inspection, repair, assembly, and installation for most components.
Digital Format Details:
N/A (assuming print)
Print Quality:
Professional print quality with clear diagrams and text. May vary slightly depending on original manufacturer and printing runs.
Binding:
Likely perfect bound or spiral bound for lay-flat usability in a workshop environment.
Paper Quality:
Durable paper stock, designed to withstand workshop conditions. May include glossy pages for photographs.
Engine Type:
Inline 4-Cylinder (M20 variant)
Displacement Liters:
1.8 L
Bore X Stroke Mm:
84.0 mm x 81.0 mm (typical for M20B18)
Compression Ratio:
8.5:1 to 9.3:1 (depending on specific M20B18 variant)
Horsepower Ps:
Approx. 113-115 PS (metric horsepower) at 5,800 rpm
Horsepower Bhp:
Approx. 111-113 bhp (brake horsepower) at 5,800 rpm
Torque Nm:
Approx. 164-165 Nm at 4,500 rpm
Torque Lb Ft:
Approx. 121-122 lb-ft at 4,500 rpm
Fuel Delivery:
Bosch LE-Jetronic or Motronic (EFI - Electronic Fuel Injection)
Fuel Type:
Unleaded Gasoline (Premium recommended)
Ignition System:
Electronic ignition with distributor and ignition coil
Historical Ratings:
No formal crash test ratings available from modern agencies (e.g., NHTSA, Euro NCAP) for this era. Known for robust construction and driver-oriented safety features of its time.
Braking System:
Front: Ventilated Discs, Rear: Solid Discs. Optional ABS (Anti-lock Braking System) available on later models or as an option.
Traction Control:
Not typically available on the 518i model.
Airbags:
Driver-side airbag was an optional extra, not standard on all 518i models.
Seatbelts:
3-point inertia reel seatbelts with front pretensioners (optional).
Body Structure:
Reinforced passenger cell, deformable crumple zones.
Audio System:
Factory fitted cassette or CD player, often with amplifier systems (e.g., HiFi system). Speaker upgrades were common.
Instrument Cluster:
Comprehensive analog gauges including tachometer, speedometer, fuel, oil temperature, and engine coolant temperature. Check control panel for system monitoring.
Cruise Control:
Optional feature, controlled via steering column stalk.
Original Connectivity:
Limited by era. Analog radio, cassette player. Some later models might have had early cellular phone integration options.
Oil Change Interval:
Every 10,000-15,000 km or 6-12 months, whichever comes first. Manual will specify exact intervals and oil types.
Air Filter Replacement:
Every 20,000-30,000 km or as per manual recommendations.
Spark Plug Replacement:
Every 30,000-50,000 km, depending on plug type (copper vs. platinum).
Timing Belt Replacement:
M20 engines use a timing chain, not a belt, for the camshaft drive. The manual will detail inspection and maintenance for the chain tensioner and guides.
Engine Oil Type:
API SG/SH or ACEA A2/A3 compliant. Viscosity typically 5W-30, 10W-40, or 15W-40 depending on climate. Manual will specify BMW approval.
Engine Oil Capacity:
Approx. 4.25 liters (4.5 US quarts) with filter change.
Coolant Type:
Ethylene Glycol based antifreeze, typically a 50/50 mix with distilled water. BMW specified coolant (e.g., G48) is recommended.
Transmission Fluid Manual:
GL-4 or GL-5 gear oil, typically 75W-90 or 80W-90. Manual will specify BMW part number.
Transmission Fluid Automatic:
ZF LifeguardFluid, typically Dexron III equivalent. Manual will specify exact type and BMW part number.
Brake Fluid Type:
DOT 3 or DOT 4 (preferred) brake fluid.
Common Wear Items:
Front control arm bushings, sway bar links, valve cover gasket leaks, coolant hoses, fuel pump failure, fuel injector seals.
Electrical Issues:
Dashboard warning lights, intermittent gauge failures, door lock actuator issues, blower motor resistor failures.
Engine Specific:
M20 engines can be sensitive to overheating if cooling system maintenance is neglected. Oil sludge buildup can occur if oil changes are infrequent.
Bmw Philosophy:
BMW's long-standing reputation for engineering excellence, 'Ultimate Driving Machine' ethos, and focus on rear-wheel-drive dynamics.
E34 Introduction:
The E34 generation replaced the E28 and was produced from 1987 to 1996. It was celebrated for its improved aerodynamics, advanced engineering, and refined driving experience compared to its predecessor.
518 Positioning Evolution:
The 518 variant, utilizing the efficient M20 four-cylinder engine, was an entry-level offering, particularly in markets prioritizing fuel economy or lower entry price. It was less common in North America, where the 520i/525i were more prevalent.
Production Years:
1987-1996 (E34 generation); 518/518i specifically produced from 1989-1994.
Manufacturing Locations:
Germany (Dingolfing plant being the primary facility)
