Rules for cleanliness

When working on exhaust gas turbocharger, pay careful attention to the following "5 rules":

• Thoroughly clean all unions and adjacent areas before disconnecting. Place parts that have been removed on a clean surface and cover them over. Do not use fluffy cloths!
• Carefully cover or seal opened components if repair cannot be carried out 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 system is open:Do not work with compressed air if this can be avoided.
• Do not move vehicle unless absolutely necessary.