BMW 7 Series: Wheel Bearings And Stub Axle
REPLACING BEARINGS (WHEEL HUB) FOR FRONT WHEEL
Necessary preliminary tasks
- Remove BRAKE DISC
- Remove FRONT PULSE GENERATOR
NOTE:
- Check brake pads and renew if necessary!
Slacken nut (1).
Tightening torque 31 12 2AZ.
Remove tension strut (2) from swivel bearing (3).
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Fig. 51: Identifying Tension Strut With Nut And Swivel Bearing
Release screws (1) and remove mount.
Tightening torque 31 21 1AZ.
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Fig. 52: Identifying Mount Screws
Installation: Replace screws.
Keep tapped holes (1) clean and free from grease.
Keep contact surface (2) of wheel bearing and swivel bearing clean and free from grease.
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Fig. 53: Identifying Wheel Bearing And Swivel Bearing Contact Surface And
Holes
REPLACING LEFT/RIGHT SWIVEL BEARING
Necessary preliminary tasks
- Remove FRONT WHEEL
IMPORTANT: Secure swivel bearing against falling out.
Remove BRAKE DISC.
Remove upper wishbone from swivel bearing.
Remove TRAILING LINK FROM SWIVEL BEARING
Remove TRACK ROD END FROM SWIVEL BEARING.
Remove LOWER WISHBONE FROM SWIVEL BEARING.
F04: Detach wheel control joint from wishbone.
Remove swivel bearing.
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Fig. 54: Identifying Front Wheel
Installation note: Replace WHEEL BEARING
Modify BRAKE ANCHOR PLATE/BRAKE GUARD PLATE.
Modify cable clip/pulse sensor on swivel bearing.
After installation
- Perform chassis/wheel alignment check.
REPLACING LEFT OR RIGHT WHEEL HUB
NOTE: Procedure is described in REPLACING FRONT WHEEL BEARING.
READ NEXT:
Information On Replacing Shock Absorbers
Situation
When a shock absorber is faulty on one side (leaking, noises, etc.), often
both shock absorbers on the axle in
question are replaced.
Effect
This is not necessary for technical reasons and
Replacing Front Left Or Right Coil Spring
Notes
IMPORTANT: Both coil springs on the relevant axle must be replaced only in
the event of
corrosion breakage!
The coil spring is allocated in the Electronic Parts Catalogue (EPC) under
the menu
SEE MORE:
Alarm system
General information
When the vehicle is locked, the vehicle alarm
system reacts to the following changes:
Opening a door, the hood or the trunk lid.
Movements in the car's interior.
Changes in the vehicle tilt, for instance, during
attempts at stealing a wheel or when towing
the vehicle.
Disc
Checking Brake Discs
Necessary preliminary tasks
Remove WHEELS.
Checking thickness difference:
Measure thickness difference within brake surfaces at 8 point (spread
over the circumference) with a
micrometer gauge
Compare measurement result with setpoint value.
Fig. 6: Measuring Thickness Difference Within Bra
