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| O-rings, flanges and gaskets should always be replaced. |
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| After removing gaskets, check that the contact surfaces of the casing and shaft do not show feathering or damage caused by the removal process. |
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| Before fitting radial seals, apply a little oil to their outer perimeters and fill the space between the sealing lips -arrow-, to half-way, with sealant grease → Spare parts catalogue. |
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| The open side of the flanges must point towards the liquid to be sealed. |
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| Fit the new flange in such a way that its sealing lip is not seated in the same place as the lip of the previous flange (taking advantage of the tolerance in the housing depth). |
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| Before fitting O-rings, lightly lubricate them so that they are not flattened during installation. |
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| Check oil level after replacing seals and gaskets → Chapter. |
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