- Thoroughly clean joints and surrounding surfaces before disconnecting.
- Put the dismantled parts on a clean lining and cover. Use film or paper, do not use lint-free cloths!
- During breaks in repair work, open structural elements should be closed or plugged with a rag.
- Install only clean parts.
- Remove spare parts from the packaging immediately before installation.
- Do not install parts that have been stored without packaging (e.g. in a toolbox).
- With an open fuel system, if possible, do not work with compressed air, so that foreign particles do not enter the system. If possible, do not move the car.