| When working on the fuel supply and injection systems, pay careful attention to the following “6 rules” for cleanliness: |
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| Thoroughly clean all unions and adjacent areas before disconnecting. |
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| Place removed parts on a clean surface and cover. Do not use fluffy cloths! |
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| Carefully cover opened components or seal if repairs cannot be carried out immediately. |
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| Install clean components only: do not remove replacement parts from packing until immediately before installing. Do not use parts that have not been stored in their packing (e.g. in tool boxes etc.). |
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| When system is open: do not work with compressed air if this can be avoided. Do not move vehicle unless absolutely necessary. |
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| Also ensure that no diesel fuel comes into contact with the coolant hoses. If necessary, the hoses must be cleaned immediately. Damaged hoses must be renewed. |
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