MX5 – Crank Oil Seal Replacement

Well running the supercharger highlighted a problem with oil leaking past the front crank oil seal.

Obviously this is not what you want to see arriving under any car though fairly normal for a classic Mini! ๐Ÿ˜‰

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This job is basically a timing belt change with the added step of swapping the oil seal. As I already did the belt and water pump not long ago there was no need for any new parts (yes I wish I’d done the seal when I did the timing belt).

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No doubt there’s a leak here.

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The seal that needs removing

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New seal and a proper tool for the job of removing the old one. From what I read it is very important to make sure you don’t scratch the crank surface as that will cause a leak that’s almost impossible to cure. Hence the proper tool rather than a screwdriver or pliers.

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I cut a piece of plastic ice-cream tub lid to slide in between the seal and crank to prevent the metal tool touching the crank.

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Like this

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Old and new seals looking the same. Always nice when the replacement part is actually correct.

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New seal in.

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All back together with no leak so far. ๐Ÿ™‚

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