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 > Ignition wires, spark plugs: Removing and installing/renewing all spark plugs (N20, N26)
Special tools required:
12 1 220
12 1 230
Necessary preliminary tasks:
Switch off ignition.
Remove IGNITION COILS.
F20, F21, F22, F23, F30, F31, F32, F33, F34, F35, F36 only:
Remove tension struts.
IMPORTANT:
Wear safety goggles.
Oil and dirt particles may get into you ...