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Drive shaft hole and grease escape

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Old 09-08-2020, 03:02 PM
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florent78
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Default Drive shaft hole and grease escape

Hi

after driving i discovered my wheel and caliper
the outside side with drive shaft wheel

i removed the wheel and discovered it comes from the center hole of the drive shaft

not normal

i have questions

why the hole exist ? There should be a reason ?

perhaps a plug inside is not present any more

is it a good idea to put a plug to avoid the grease to escape

i will appreciate your feedback



Old 09-08-2020, 04:26 PM
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Bill Verburg
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Happened to me when running 1.5 hour long sessions at WGI in 90+ heat


solution was to repack w/ Krytox
Old 09-08-2020, 04:35 PM
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wilsonny
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it's come from your cv joint... the hollow shaft goes through into the joint... have you had the joints repacked recently ? I would not plug the hole, the normal movement of the joint generates a pull and push of air down the tube.
Old 09-08-2020, 04:45 PM
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pp000830
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I would also be concerned that the joint is failing, heating up and so ejecting grease. Verify if this is an issue with those more knowledgable as I do not have experience in this area. It may be nothing or it may warrant an inspection of the joint and a repacking with grease.
Andy
Old 09-08-2020, 04:45 PM
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florent78
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No

and i ve done several track days before without this issue

it was hot during the weekend
i drived hard

but nothing exceptional
Old 09-08-2020, 05:12 PM
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wallyman424
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As others have said the hole is a vent hole, no plug needed. You're in need of a grease repack at very least. Either a joint failed and overheated the grease, or the grease in there was so old it basically liquified.
Old 09-08-2020, 05:18 PM
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florent78
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Yes

grease seems really liquid
Old 09-09-2020, 12:08 PM
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SwayBar
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Yes, I agree that something is failing and heating up the grease.

Good job catching it before something worse happens.



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