BMW 7 Series: Checking Rim For Lateral And Radial Runout
Necessary preliminary tasks
- Remove WHEEL
- Check WHEEL for lateral and radial runout
- Remove TYRE from disc wheel
- Remove dirt from rim well and rim flange
IMPORTANT: Disc wheels are not allowed to be repaired!
Mount disc wheel in balancing machine.
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Fig. 30: Identifying Disc Wheel On Wheel Balancing Machine
Use suitable wheel centering element supplied with corresponding balancing machine.
- Basic flange
- Wheel centering element
- Type flange
- Clamping nut
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Fig. 31: Identifying Basic Flange, Wheel Centering Element, Type Flange,
Clamping Nut
Place dial gauge sensor on rim shoulder.
Turn wheel by hand and measure max. radial runout.
Carry out measurement on both rim shoulder sides.
NOTE: Dial gauge must be vertical to rim shoulder.
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Fig. 32: Measuring Max. Radial Runout Using Dial Gauge
Position sensor on rim flange.
Turn wheel by hand and measure max. lateral runout of rim with special tool 36 1 030 (measuring fixture).
Carry out measurement on both rim flanges.
NOTE: Dial gauge must be vertical to rim flange.
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Fig. 33: Measuring Max. Lateral Runout Using Dial Gauge
IMPORTANT: Avoid transformation errors during subsequent installation tasks.
READ NEXT:
General Information On Light Alloy Disc Wheels
NOTE: It is sometimes difficult to distinguish light alloy disc wheels
visually from steel
disc wheels.
Identifying features:
Sticker on light alloy disc wheel. (1) = Indication "Aluminium"
Wall t
Removing And Installing RDC (Tyre Pressure Control) Control Unit
IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC
DAMAGE (ESD protection).
Necessary preliminary tasks
Remove right LUGGAGE COMPARTMENT WHEEL ARCH PANEL.
Disconnect plug con
Removing And Installing/Replacing RDC Reception Aerial
Necessary preliminary tasks
Remove front left UNDERBODY PANELLING
Disconnect plug connection (1).
Gently press retaining tabs apart in direction of arrow and remove RDC aerial
(2).
Fig. 46: Pres
SEE MORE:
Carrying Out Ride Height Adjustment
NOTE: Ride height adjustment must be carried out after the following work:
Removal/replacement of ride height sensor or its control rod (only
necessary for vehicles with air suspension or vehicles with VDC)
Replacement of wiring harness
Replacement of air supply system control unit (F01/F02/F04
Reinforcement Plate With Stud Bolt (Bonded)
In the case of a partial replacement piece, a body component is cut at a
point described in the repair instructions.
A reinforcement plate is bonded in to ensure sufficient strength.
Reinforcement plates are available as new parts and must also be used (refer to
Electronic Parts Catalogue).
NOTE
