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 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 removed parts on a clean surface and cover them with lint-free cloths.
• Carefully cover over opened components or seal, if repairs are not performed immediately.
• Only install clean components: Only unpack replacement parts immediately prior to installation. Do not use parts that have been stored out of their original packaging (for example in tool boxes etc.).
• If system is open, do not work with compressed air and do not move the vehicle.
• Make sure no fuel gets onto the fuel hoses. If necessary, wipe off the fuel hoses immediately.
• Protect disconnected electrical connectors from dirt and moisture and only connect if dry.