1.2 TDI CR engine (EA189) · Technical data · General repair notes

Rules for cleanliness

⇒ 3.1.1 When working on fuel supply/injection system

⇒ 3.1.2 When working on turbocharger

3.1.1 When working on fuel supply/injection system

When working on fuel supply and injection system, pay careful attention to the following rules for cleanliness:

  • Thoroughly clean all unions and adjacent areas before disconnecting.
  • Place removed parts on a clean surface and cover them over. Use lint-free cloths only.
  • Carefully cover opened components or seal them if repairs cannot be carried out immediately.
  • Install only clean parts; do not remove new parts from packaging until immediately before installing. Do not use parts that have been kept unpackaged (for example in toolboxes).
  • When the system is open: Do not work with compressed air. The vehicle should not be moved.
  • Also ensure that no diesel fuel comes into contact with the coolant hoses. Should this occur, the hoses must be cleaned immediately. Damaged hoses must be renewed.

3.1.2 When working on turbocharger

When working on the turbocharger, pay careful attention to the following rules for cleanliness:

  • Thoroughly clean all unions and adjacent areas before disconnecting.
  • Place removed parts on a clean surface and cover them over. Use lint-free cloths only.
  • Carefully cover opened components or seal them if repairs cannot be carried out immediately.
  • Install only clean parts; do not remove new parts from packaging until immediately before installing. Do not use parts that have been kept unpackaged (for example in toolboxes).
  • Transportation and protective packaging and sealing caps must be removed only immediately before fitting.
  • When making repairs, remove oil from connection and hose ends.
  • If system is open, do not work with compressed air. Do not move vehicle unless absolutely necessary.