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 off any open lines and connections immediately with plugs, for example, take from :VAS6122  .
• Remove the caps from any components just before installing the component. Keep the parts that are going to be used in a new, sealable plastic bag.
• Place removed parts on a clean surface and cover them. Use a lint-free cloth.
• Carefully cover or plug unpacked components if repairs cannot be performed immediately.
• Only install clean components: Remove the replacement parts from their packaging just prior to 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.
• Make sure no fuel gets onto the fuel hoses. If necessary, wipe off the fuel hoses immediately.
• In addition, do not let diesel fuel flow onto coolant hoses. If necessary, the hoses must be cleaned again immediately. Replace corroded hoses.
• Protect the disconnected connectors from dirt and moisture and only connect when they are dry.