BMW X3 Service & Repair Manual: Straightening aluminum component on the outer skin
1.0 Prerequisites
The component must be replaced if there are cracks and it is neither possible to drill into the end of the crack, nor to weld it.
2.0 Recommended tools
- Only use tools specifically designed for aluminum repairs.
- Do not use tools and operating fluids that have already been used for steel repairs (e. g. grinding wheel). Danger of contact corrosion.
- Do not use any sharp-edged tools (notch effect).
3.0 Straightening outer skin
- "Cold" straightening: Press dents out from their center and smooth in an outwards direction with
gentle taps.
In the case of small, soft dents (hail and parking damage), this is also possible without damaging the paintwork. Special tools and a trained employee are needed.
- "Hot" straightening: Heat the component in the damaged area with a hot air blower to approx. 60 Â ºC. This significantly reduces the force that needs to be applied for straightening.
- Avoid notching and cracking.
- Avoid hardening and overstretching.
- Avoid heating and excess temperature the outer skin over large areas.
Stamping vehicle identification number (needle stamping unit)
Read and comply with GENERAL INFORMATION.
The needle stamping system 360 - VRM - BMW is required to stamp the vehicle identification number.
Ord ...
Straightening aluminum components in structure
Reshaping or heating extruded profiles and cast parts is not permitted!
Failure to comply with this requirement would have the following resul ...
Other materials:
BMW X3 Service & Repair Manual > Electronic damping force adjustment: Removing and installing/replacing control unit for vertical dynamic control
IMPORTANT:
Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC
DISCHARGE (ESD PROTECTION) .
Necessary preliminary tasks:
Remove ignition key.
Disconnect BATTERY NEGATIVE CABLE .
Remove FLAP IN LUGGAGE COMPARTMENT TRIM PANEL ON RIGHT .
Undo screw (1), release expanding ...