BMW X3 Service & Repair Manual: Checking wheel rim for lateral and radial runout
Necessary preliminary tasks:
- Remove WHEEL.
- Check WHEEL for lateral and radial runout.
- Remove TIRE from disc wheel.
- Remove dirt from rim base and rim flange.
IMPORTANT: Disc wheels are not allowed to be repaired!
Mount disc wheel in balancing machine.
Use suitable wheel centering element supplied with corresponding balancing machine.
- 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 .
NOTE: Dial gauge must be vertical to rim shoulder.
Position sensor on rim flange.
Turn wheel by hand and measure max. lateral runout .
Carry out measurement on both rim flanges.
NOTE: Dial gauge must be vertical to rim flange.
IMPORTANT: Avoid clamping errors during subsequent installation work.
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 ...
Other materials:
BMW X3 Service & Repair Manual > Electronic switching or control units: Replacing (dde) control unit (N47 D20 O1)
IMPORTANT:
Read and comply with NOTES on protection against electrostatic damage (ESD protection).
Necessary preliminary work:
Read out the fault memory of the DDE control unit.
Switch off ignition.
Disconnect BATTERY EARTH LEAD .
FOLLOW INSTRUCTIONS FOR REMOVING AND INSTALLING CO ...