Rules For Cleanliness

When working on the exhaust gas turbocharger, pay careful attention to the "5 rules:"
^ Thoroughly clean all unions and the adjacent areas before disconnecting.
^ Place parts that have been removed on a clean surface and cover. Do not use fluffy cloths!
^ If the repair cannot be carried out immediately, carefully cover or seal any components that have been opened.
^ 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, do not work with compressed air if this can be avoided. Do not move vehicle unless absolutely necessary.