Guidelines For Clean Working Conditions

Even small pieces of debris can cause faults. observe the following guidelines for cleanliness when working on the fuel supply system, turbocharging system and injection system:

• Before loosening, the connection points and surrounding areas must be cleaned thoroughly with engine or brake cleaner, and then the cleaned area must be thoroughly dried.
• Immediately seal off any open lines and connections with clean plugs taken from the :VAS6122  , for example.
• Place removed parts on a clean surface and cover them with lint-free cloths.
• Carefully cover or seal opened components if repairs are not performed immediately.
• Only install clean parts: remove the replacement parts from their packaging just before installing them. Do not use parts that have been stored loose (for example, in tool boxes).
• If the 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, the fuel hoses must be cleaned again immediately.
• Protect any disconnected connectors from dirt and moisture, and only connect them when they are completely dry.