This document is a service manual for BMW 7 Series (E28) cars from 1988-1994. It provides detailed maintenance and repair information to help owners and technicians work on and understand the vehicles. The manual covers topics such as routine maintenance, engine repair, suspension and brakes, electrical components, and body adjustments. It also includes specifications, wiring diagrams, and other technical reference information. Models and engines covered include the 735i/iL with a 3.5L M30 engine, 740i/iL with a 4.0L M60 engine, and 750iL with a 5.0L M70 engine.

2. 1
2
3
4
5
6
7
Foreword and Disclaimer. . .......... ................... ... v
Warnings and Cautions. ................ .. vii
Index . ...... ...... .. . . . ... .. .. .. ...... back of book
Q
01 0 Gener
General Data and 020 Maintenance
Maintenance
100 Engine-General 120 Ignition System
110 Engine Removal and Installation 121 Battery, Starter, Alternator
113 Cylinder Head Removal 130 Fuel InjectionEngine and Installation 160 Fuel Tank and Fuel Pump
116 Cylinder Head and Valvetrain 170 Radiator and Cooling System
117 Camshaft Timing Chain 180 Exhaust System
119 Lubrication System
I
200 Transmission-General 240 Automatic Transmission
Transmission 21 0 Clutch 250 Gearshift Linkage
230 Manual Transmission 260 Driveshaft
300 Suspension, Steering and 330 Rear Suspension
•
Suspension, Brakes- General 331 Final Drive
310 Front SuspenSion 340 Brakes
Steering and 320 Steering and Wheel Alignment 370 Integrated Suspension Systems
Brakes
400 Body-General 411 Doors
Body 410 Fenders, Engine Hood 41 2 Trunk Lid
510 Exterior Trim, Bumpers 520 Seats
Body Equipment 512 Door Windows 540 Sunroof
513 Interior Trim
515 Central Locking
600 Electrical System-Genera' 620 Instrum nls
Electrical System 610 EI clrical Component Locations 630 Exterior Lighting
611 Wip rs and Washers 40 Heating and Air Conditioning
612 Switches and Electrical Accessories 650 Radio
720 Seat Belts
Equipment and 721 Airbag System (SRS)
Accessories
Electrical Wiring
Diagrams

987. BMW ~o .~ --- .· 0
7 Series 1988 .-1994
Service Manual
This Bentley Manual is a comprehensive source of service information, technical specifications, and wiring schematics specifically
for BMW 7 Series (E28) cars from 1988 through 1994. The aim throughout this manual has been simplicity, clarity and complete­
ness, with practical explanations, step-by-step procedures and accurate specifications. Whether you're a professional technician
or a do-it-yourself BMW owner, this manual will help you understand, maintain, and repair your E32 7 Series.
Though the do-it-yourself BMW owner will find this manual indispensable as a source of detailed maintenance and repair informa­
tion, the BMW owner who has no intention of working on his or her car will find that reading and owning this manual will make it
possible to discuss repairs more intelligently with a professional technician.
See how to per/orm
routine maintenance
procedures, such as
checking brake pad
thickness.
020 Maintenance
09tailed descnptions
01 engine repair
procedures, including
timing chain setup
and adjustment.
117 Camshaft
Timing Chain
Quickly locate
electronic modules,
relays and luses.
610 Electrical
Component Locations
Electrical wiring
diagrams lor
models covered
in this manual.
Electrical Wiring
Diagrams
Features:
• Maintenance procedures for everything from brake fluid changes to
resetting the Service Indicator. This manual tells you what to do and
how and when to do it.
• Engine service, repair, and reconditioning, including valve clearance
adjustments for 6-cylinder (M30) engine and camshaft timing chain
setup and adjustment for V8 (M60) and V12 (M70) engines.
• Information for specific driveability problems for DME 1.2 (early and
late), DME 1.3, DME 1.7, and DME 3.3 engine management systems,
On-Board Diagnostics (OBD), and Electronic Throttle Control (EML).
• Suspension and brake system maintenance, troubleshooting, adjust­
ment and repair, including ABS, traction control (ASC/ASC+T), self
leveling suspension (LAD), and electronic damping control (EDC III).
• Automatic heating and air conditioning (lHKA) repair, including AlC
component replacement.
• Body adjustments and repairs.
• Wiring schematics for all circuits, including power distribution,
grounds circuits, and an expanded electrical component location
section.
• Comprehensive BMW factory tolerances, wear limits, adjustments
and tightening torques that you've come to expect from Bentley
manuals,
Models and engines:
735i/iL (M30) 3.5L engine
740iliL (M60) 4.0L engine
750iL (M70) 5.0L engine
Transmissions:
Automatic (remove, install, external service)
ZF 4 HP 22 EH (M30 engine)
ZF 4 HP 24 EH (M70 engine)
ZF A5S 560 Z (M60 engine)
Manual (remove, install, external service)
Getrag 260/6 (M30 engine)