Segment:
Executive/Luxury Mid-size Sedan
Target Audience:
Enthusiasts, DIY mechanics, professional technicians
Competitors:
Mercedes-Benz W124 E-Class, Audi 100/200, Jaguar XJ, Volvo 740/760
Design Philosophy:
Sporty handling, build quality, advanced engineering for its era
Platform:
E34 chassis introduced significant advancements in ride comfort and handling
Engine Coverage:
M20B25 Inline 6-cylinder (2.5L)
Transmission Coverage:
Getrag 260 5-speed manual, ZF 4HP22 4-speed automatic
Chassis Systems Coverage:
Suspension, steering, brakes (ABS included), drivetrain, exhaust
Electrical Systems Coverage:
Engine management, lighting, instrumentation, power accessories, diagnostics
Bodywork Coverage:
Exterior panels, interior trim, glass, seals
Type:
Full Service and Repair Manual
Engine Mechanical:
Complete overhaul, cylinder head, block, pistons, crankshaft, camshaft, timing chain/belt, lubrication system, cooling system
Engine Fuel System:
Bosch Motronic fuel injection, injectors, fuel pump, fuel pressure regulator, fuel filter, emissions control
Transmission Manual:
Clutch, gearbox internal components, shift linkage, removal and installation
Transmission Automatic:
Torque converter, hydraulic control unit, valve body, planetary gear sets, removal and installation, fluid and filter changes
Brake System:
Hydraulic system, master cylinder, brake boosters, calipers, pads, rotors, ABS (Anti-lock Braking System) diagnosis and repair
Suspension System:
Front struts, rear shock absorbers, control arms, bushings, ball joints, sway bars, wheel bearings
Steering System:
Power steering pump, steering rack, tie rods, steering column, wheel alignment procedures
Electrical System Diagnosis:
Wiring diagrams, fuse box layouts, relay functions, troubleshooting techniques, component testing
HVAC System:
Heating, ventilation, air conditioning components, refrigerant system, blower motor, controls
Routine Maintenance:
Oil changes, filter replacements, fluid checks, spark plug replacement, belt inspection and replacement
Troubleshooting Diagnostics:
Step-by-step diagnostic flowcharts for common problems, fault code interpretation (where applicable)
Component Rebuild:
Detailed instructions for rebuilding engine, transmission, differential, and steering components
Repair Replacement:
Removal, installation, and adjustment procedures for all major and minor vehicle components
Electrical Component Testing:
Testing of sensors, actuators, ECUs, starter, alternator, and other electrical parts
Body Repair:
Procedures for dent repair, panel replacement, glass installation, and interior trim removal/installation
Wheel Alignment:
Specifications and procedures for front and rear wheel alignment
Depth:
Comprehensive (from basic maintenance to full engine/transmission rebuilds)
Diagnostic Level:
Advanced diagnostic procedures for all major systems, including electrical and fuel injection
Torque Specifications:
Detailed torque values for all critical fasteners
Clearances Tolerances:
Specifications for engine component clearances, valve lash, etc.
Oil Change Interval:
Every 5,000-7,500 miles or annually
Spark Plug Replacement:
Approximately 30,000 miles
Coolant Flush:
Every 2 years or 30,000 miles
Transmission Fluid Change:
Manual: Inspect periodically. Automatic: Every 30,000-50,000 miles
Engine Oil Type:
API SG or higher, SAE 15W-40 or 10W-40 (check manual for specific conditions)
Engine Oil Capacity:
5.5 Liters (with filter)
Coolant Type:
BMW Blue antifreeze (Glysantin G48 compatible)
Brake Fluid Type:
DOT 3 or DOT 4
Power Steering Fluid:
Dexron II or equivalent ATF
Manual Transmission Fluid:
SAE 75W-90 synthetic gear oil (BMW approved)
Automatic Transmission Fluid:
Dexron II or Dexron III
Engine Cooling System:
Plastic coolant expansion tanks can become brittle and crack. Water pump and thermostat failures are common.
Electrical System:
Corrosion in wiring connectors, particularly in the engine bay. Failure of the Motronic control unit can occur.
Suspension Bushings:
Front and rear suspension bushings degrade over time, leading to loose handling and noise.
Fuel Injectors:
Early model fuel injectors can become clogged or fail.
Interior Electronics:
Window regulators, central locking, and climate control issues can arise.
