| Rules for cleanliness when working on the gearbox |
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| Thoroughly clean all joints and surrounding areas before dismantling. |
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| Place removed parts on a clean surface and cover them over. Use sheeting and paper. Use lint-free cloths. |
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| Carefully cover or seal open components if repairs cannot be carried out immediately. |
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| Only install clean components: do not remove replacement parts from packaging until just before installation. |
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