BMW 518i 1988 Service Repair Workshop Manual

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🏷️ Basic Information Identification Make: BMW Model: 518i Year: 1988 Generation Chassis Code: E34 Codes Engine Code Common: M20B18 👋 Introduction Market Position Segment: Executive Sedan Target Audience: Performance-oriented luxury...

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UGS: 432623

Mots clés: 1988 518i BMW Car Cars Misc

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Description

🏷️ Basic Information

Identification

Make:

Model:

Year:

Generation

Chassis Code:

Codes

Engine Code Common:

M20B18

👋 Introduction

Market Position

Segment:

Executive Sedan

Target Audience:

Performance-oriented luxury sedan buyers

Competitive Analysis

Key Competitors:

Mercedes-Benz W124 E-Class, Audi 100/200

Key Features

Design Philosophy:

German engineering, driver-centric focus, premium build quality

Handling:

Renowned for its balanced chassis and engaging driving dynamics

📋 Manual Details

Coverage Areas

Service And Repair:

Comprehensive

Maintenance Procedures:

Diagnostic Troubleshooting:

Extensive

Page Count

Estimated Pages:

Manual Type

Type:

Factory Service Manual / Workshop Manual

Language

Language:

English

Format

Format:

Digital (PDF)

📖 Manual Coverage

Systems Covered

Engine:

M20B18 4-cylinder, 8-valve, fuel-injected

Fuel System:

Bosch LE-Jetronic Fuel Injection

Ignition System:

Electronic Ignition System

Cooling System:

Complete cooling system diagnosis and repair

Exhaust System:

Component replacement and repair

Transmission:

Getrag 5-speed Manual & Automatic (Optional)

Clutch:

Service and adjustment

Driveline:

Driveshafts, CV joints, rear differential

Suspension:

Front MacPherson struts, Rear multi-link, components and alignment

Steering:

Power steering system, components, and adjustment

Brakes:

Front ventilated discs, Rear solid discs, ABS (Optional), system overhaul

Electrical System:

Charging system, starting system, lighting, instrumentation

Wiring Diagrams:

Detailed circuit diagrams for all systems

Climate Control:

HVAC system diagnosis and repair

Bodywork:

Panel removal/installation, trim, glass

Interior:

Seating, dashboard, upholstery

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, spark plugs, fluid checks

Engine Overhaul:

Complete engine rebuild procedures, including piston, ring, bearing, valve, and head gasket replacement

Transmission Repair:

Manual and automatic transmission overhaul and component replacement

Brake System Repair:

Caliper rebuild, disc/pad replacement, bleeding, ABS diagnostics

Suspension Component Replacement:

Struts, shocks, control arms, bushings

Electrical Component Testing:

Alternator, starter, fuel pump, sensors

Troubleshooting Guides:

Systematic diagnosis of common and uncommon problems

Body Panel Alignment And Repair:

Minor dent repair, panel fitting

Tune Up Procedures:

Ignition timing, idle speed, fuel mixture adjustments

Climate Control Diagnostics:

Refrigerant system, blower motor, actuators

Technical Depth

Depth:

Detailed, comprehensive, suitable for professional mechanics and experienced DIYers

Diagnostic Codes:

Includes diagnostic trouble codes (DTCs) if applicable for the era's systems

Torque Specifications:

All critical fastener torque specifications included

Special Tools:

Lists any required special tools for specific procedures

📊 Manual Specifications

File Format

Quality:

High-resolution, searchable PDF with clear diagrams and text

Searchability:

Full text searchable for quick information retrieval

Print Quality

Diagram Clarity:

Crystal clear, detailed diagrams and illustrations

Binding Type

Type:

N/A (Digital Format)

Paper Type

Type:

N/A (Digital Format)

⚙️ Engine Specifications

Primary Engine

Engine Code:

M20B18

Engine Type:

Inline 4-cylinder, SOHC

Displacement:

1.8 Liters (1795 cc)

Bore X Stroke:

84.0 mm x 81.0 mm

Compression Ratio:

8.5:1

Performance

Horsepower:

115 PS (113 bhp; 85 kW) at 5800 rpm

Torque:

164 Nm (121 lb-ft) at 4500 rpm

Fuel System

Type:

Bosch LE-Jetronic Multi-Point Fuel Injection

Fuel Type:

Unleaded gasoline (RON 91 or higher recommended)

Cooling System

Capacity:

Approx. 7.5 Liters

Coolant Type:

BMW recommended ethylene glycol-based coolant (e.g., G48)

Oil Specifications

Engine Oil Type:

API SG or SH, SAE 10W-40 or 15W-40 recommended

Oil Capacity:

Approx. 4.25 Liters (with filter)

🔧 Transmission

Standard

Type:

Getrag 260 5-speed Manual Transmission

Optional

Type:

ZF 4HP22 4-speed Automatic Transmission

Features

Manual Gear Ratios:

Included in manual

Automatic Features:

Sport/Economy modes (if equipped)

Fluid Specifications

Manual Transmission Fluid:

API GL-4 SAE 75W-90 or 80W-90

Automatic Transmission Fluid:

Dexron III or equivalent (e.g., ATF LT71141)

📐 Dimensions

Exterior

Length:

4730 mm (186.2 in)

Width:

1751 mm (68.9 in)

Height:

1410 mm (55.5 in)

Wheelbase:

2795 mm (110.0 in)

Front Track:

1464 mm (57.6 in)

Rear Track:

1487 mm (58.5 in)

Weights

Curb Weight Manual:

Approx. 1450 kg (3197 lbs)

Curb Weight Auto:

Approx. 1480 kg (3263 lbs)

Gross Vehicle Weight Rating:

Included in manual

Towing Capacity:

Included in manual (if applicable)

Wheel Bolt Pattern:

5 x 120 mm

Wheel Size Standard:

15 x 6.5 inch alloy wheels

Tire Size Standard:

205/65VR15

🛡️ Safety Features

Ratings

NHTSA Rating:

N/A for this era, but designed to high European standards

Active Features

Optional Anti-lock Braking System (ABS)

Traction Control:

Not typically available on 518i

Passive Features

Airbags:

Driver airbag not standard, optional in later E34 years

Seatbelts:

3-point inertia-reel front seat belts, 3-point rear seat belts

Body Structure:

Reinforced safety cell with crumple zones

💡 Technology Features

Infotainment

Audio System:

Factory BMW premium sound system (optional), typically cassette player

Display:

Analog gauges, central information display (MID) for trip computer functions

Driver Assistance

Cruise Control:

Standard or optional depending on trim

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 10,000-15,000 km (6,000-9,000 miles) or annually, as per manual recommendations.

Air Filter Replacement:

Every 30,000-40,000 km (18,000-25,000 miles)

Spark Plug Replacement:

Every 40,000-60,000 km (25,000-37,000 miles) depending on plug type.

Timing Belt Replacement:

M20 engine uses a timing chain, not a belt, which typically lasts the life of the engine but requires inspection for tensioner wear.

Brake Fluid Flush:

Every 2 years

Coolant Flush:

Every 2-3 years

Fluid Specifications

Power Steering Fluid:

ATF Dexron III or equivalent

Brake Fluid Type:

DOT 3 or DOT 4

Known Issues

Coolant Leaks:

Plastic coolant expansion tanks and hose connections can degrade over time.

Fuel Pump Reliability:

Early models may experience fuel pump failures; preventative replacement is sometimes advised.

Suspected Oil Leaks:

Valve cover gasket, oil pan gasket, and rear main seal are common leak points on the M20 engine.

E34 Specific Issues:

Subframe bushings, heater core failure, window regulator issues.

📚 Vehicle History

Brand Heritage

Brand Reputation:

BMW is renowned for producing driver-focused, high-performance luxury vehicles with exceptional build quality.

Model Evolution

E34 Introduction:

The E34 generation of the 5 Series was introduced in 1988, replacing the successful E28 generation.

518I Positioning:

The 518i was the entry-level model in the E34 lineup, offering a more accessible entry point into BMW ownership.

E34 Facelift:

The E34 received a significant facelift in 1994.

Production

Production Years:

E34 generation: 1988–1996

Manufacturing Locations:

Primary manufacturing in Dingolfing, Germany

🏆 Awards & Recognition

Recognitions

E34 Series Awards:

The E34 generation as a whole was highly regarded for its design and driving dynamics, often featured in 'Best Cars' lists of its era.

Ratings

Consumer Reports Ratings:

Typically rated well for performance and reliability relative to its peers at the time, though certain electrical components could be a concern in later years.

Certifications

Iso Certification:

BMW production facilities adhere to strict quality control standards, often ISO certified.