- Thoroughly clean the connection points and their surroundings before loosening. Lay out the removed parts on a clean surface and cover them. Use foil or paper. Do not use a lint-free cloth.
- Opened parts should be covered or covered if repairs are not to be made immediately.
- Install only clean parts.
- Remove spare parts from packaging just before installation.
- Do not use parts that have not been packaged.
- When the system is open, do not use compressed air if possible. If possible, do not move the car.