| When working on the fuel supply/injection system, observe the following basic rules: |
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| Before disconnecting, thoroughly clean all connections and adjacent areas e.g. with brake cleaner. |
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| Place removed parts on a clean surface and cover. Use only lint-free cloths. |
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| Carefully cover opened components and connections or seal if repairs cannot be carried out immediately. |
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| Install only clean parts: only remove replacement parts from packaging immediately prior to installation. Do not use any parts which have not been stored in their packaging (e.g. in a tool box). |
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| When the system is open: Do not use compressed air. Do not move vehicle. |
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| Also ensure that no diesel fuel comes into contact with the coolant hoses. Should this occur, the hoses must be cleaned immediately. Damaged hoses must be renewed. |
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