Rules for cleanliness

When working on the fuel supply/injection system, pay careful attention to the following "6 rules" :

• Thoroughly clean all connections and the surrounding area before disconnecting.
• Place parts that have been removed on a clean surface and cover them. Do not use fluffy cloths! Use surfaces of paper or plastic.
• Carefully cover over opened components or seal them, 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 loose (e.g. in tool boxes etc.).

• When the system is open: Avoid working with compressed air if possible. Do not move vehicle unless absolutely necessary.
• In addition, do not let diesel fuel spill onto coolant hoses. If necessary, the hoses must be cleaned immediately. Replace corroded hoses.