Clean Working Conditions

Even a little contamination can lead to faults. When working on the fuel supply and on the fuel injection system, observe the following guidelines for a clean working environment:

• Before loosening, the connection points 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 Engine Bung Set VAS6122.
• Place removed parts on a clean surface and cover them with lint-free cloths.
• 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 unpacked (for example. in tool boxes etc.).
• When the system is open: Do not work with compressed air. Do not move vehicle unless absolutely necessary.
• 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.