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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 BMW 735I car and truck
repair procedures including BMW engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your 1991 BMW 735I automobile. Try the Automotix DIY solution today!
BRAKE SERVICE PROCEDURES FOR 1991 BMW 735I AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 BMW 735I cars and light trucks from 1990+.
Anti-Lock Brakes -> DESCRIPTION
Vehicle: 1991 BMW 735I 3.5 L6 GAS
The Anti-Lock Brake System (ABS) consists of a control unit, hydraulic unit, speed sensors and wiring harness. Each speed sensor has a gear wheel which runs past the permanently magnetized edge of the speed sensor installed in the wheel hub. The rotary motion of the wheels is recorded by inductive sensors and an electric signal is sent to the electronic control unit.
The electronic control unit is located in a compartment on the right side of the engine compartment. This control unit inputs acceleration, deceleration and slip factors from the electronic speed sensors, which are propo...
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BRAKE SERVICE PROCEDURES FOR 1991 BMW 735I AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 BMW 735I cars and light trucks from 1990+.
Hydraulic Brakes -> DESCRIPTION -> 735 & 750 -> 850 -> H-31 HYDRAULIC SYSTEM -> MASTER CYLINDER
Vehicle: 1991 BMW 735I 3.5 L6 GAS
H-31 HYDRAULIC SYSTEM
The H-31 hydraulic system, Fig. incorporates a power flow regulator which diverts a small flow of fluid from the power steering operating circuit for the power assisted brake system. It charges the hydraulic reservoir in a high pressure range without impairing the function of power steering. The pressurized hydraulic oil volume is supplied to the booster for the sake of power assistance and is applied by operating the connected standard tandem master cylinder. should the power steering pump fail, the hydraulic reservoir has sufficient reserve pressure to permit...
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BRAKE SERVICE PROCEDURES FOR 1991 BMW 735I AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 BMW 735I cars and light trucks from 1990+.
Power Brake Units -> POWER BRAKE UNIT SERVICE -> 318, 325, 525 & 535 -> 735, 750 & 850 -> POWER BRAKE BOOSTER, REPLACE
Vehicle: 1991 BMW 735I 3.5 L6 GAS
POWER BRAKE BOOSTER, REPLACE
318, 325, 525 & 535
- Remove master cylinder from booster.
- Remove lower left trim panel.
- Disconnect bayonet pin and clip from booster pushrod, below instrument panel. Fig.
- Detach booster from pedal base. Remove booster from engine compartment.
- Reverse procedure to install.
735, 750 & 850
- With engine off, discharge hydraulic reservoir by operating brake pedal approximately 20 times with same force required for fu...
CLICK HERE TO GET FULL ACCESS TO 1991 BMW 735I BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 BMW 735I AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 BMW 735I cars and light trucks from 1990+.
Hydraulic Brakes -> TROUBLESHOOTING
Vehicle: 1991 BMW 735I 3.5 L6 GAS
Refer to Fig. for hy...
CLICK HERE TO GET FULL ACCESS TO 1991 BMW 735I BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 BMW 735I AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 BMW 735I cars and light trucks from 1990+.
Disc Brakes -> PARKING BRAKE ADJUSTMENT
Vehicle: 1991 BMW 735I 3.5 L6 GAS
- Ensure parking brake lever is fully released and cables operate freely, then raise and support rear of vehicle.
- On models with wheel bolts, remove 1 wheel bolt from each wheel. On models with studs, remove rear wheels and secure brake discs using lug nuts and spacers.
- On all models, rotate wheel until bolt hole is aligned with parking brake star adjuster. Adjuster is located approximately 30 ° behind the vertical axis of the wheel on 300 series vehicles, Fig. , or 45 ° below horizontal axis of wheel toward rear of vehicle on 500, 600, 700 & 800 series vehic...
CLICK HERE TO GET FULL ACCESS TO 1991 BMW 735I BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 BMW 735I AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 BMW 735I cars and light trucks from 1990+.
Power Brake Units -> TROUBLESHOOTING -> 318, 325, 525 & 535 -> BRAKE BOOSTER VACUUM SUPPLY CHECK -> FUNCTION TEST
Vehicle: 1991 BMW 735I 3.5 L6 GAS
FUNCTION TEST
- Operate brake pedal ten times with engine stopped.
- If brake pedal gives, system is okay.
- If brake pedal does not give, check valve, vacuum hose and/or rubber ring between master cylinder and brake booster could be defective.
BRAKE BOOSTER VACUUM SUPPLY CHECK
318, 325, ...
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