Clean Working Conditions

Even a little contamination can lead to faults. Observe the following guidelines for cleanliness when working on the fuel system, injection system and turbocharger:

• Before loosening, connections and surrounding areas must be cleaned thoroughly with engine or brake cleaner, and then the cleaned area must be dried completely.
• Seal the open lines and connections immediately with clean plugs, for example, from the engine bung set VAS 6122.
• Place parts that have been removed on a clean surface and cover them. Use lint-free cloths.
• Carefully cover over opened components or seal, if repairs are not performed immediately.
• Install only clean parts: remove the replacement parts from their packaging just before installing them. Do not use parts that have been stored out of their original packaging (for example, in tool boxes etc.).
• When the system is open: do not work with compressed air. Do not move vehicle unless absolutely necessary.
• Protect disconnected electrical connectors from dirt and moisture and only connect if dry.