| When working on the exhaust gas turbocharger, pay careful attention to the following “6 rules” for cleanliness: |
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| Thoroughly clean all unions and the adjacent areas before opening. |
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| To prevent dirt from entering, seal off open lines and connections with clean plugs, for example, from the engine sealing plug set -VAS 6122-. |
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| Place parts that have been removed on a clean surface and cover them. Do not use rags that shed fibres! |
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| Cover or carefully close any exposed parts if the repair is not to be made immediately. |
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| Only fit thoroughly clean components. Only unpack spares just before fitting them. Do not use parts that have been stored loose (e.g. in tool boxes etc.). |
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| If the 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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