Guidelines For Clean Working Conditions

Even Small Pieces of Debris Can Cause Faults. When Working on the Fuel Supply and Injection System, Observe the Following Guidelines for Cleanliness:

• 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 out of their original packaging (for example, in tool boxes).
• If the system is open, do not work with compressed air and do not move the vehicle.
• Protect any disconnected connectors from dirt and moisture, and only connect them when they are completely dry.
• Make sure no diesel fuel gets onto other components inside the engine compartment. Clean it off immediately if necessary.