Hub seals

Dec 15, 2004 4 Replies

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Gromit 21 years ago

Hi All, In the last 2 days, my 110 started pulling under braking. The front offside brake disk is coated in what looks like EP90. The outside of the disk is clean, just the inside is contaminated. Theres a nice glob of oil hanging from the bottom of the caliper.

So my question is which seal has gone?

The swivels have been dribbling for the last while but I don't see how oil from a leaking swivel could get to the disks as the swivel is a good inch inboard of the disk.

So, does this mean its one of the seals the hub/sub axle? Not having done this before, I reckon I can strip the hub but have my doubts about doing the swivel.

Anything else I should look out for? oh, and I Know this is a FAQ but what size is the hub nut again?

cheers, Gromit

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beamendsltd 21 years ago

Most likely the inner hub seal.

2"1/16! Hub spanners are availble from parts dealers (5.39 here)

Cheers Richard

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steve 21 years ago

same thing happened on my RR, and its the inboard hubseal you need to sort....sometimes this is a symptom of a blocked axle breather so you should check that before changing seal...save you changing it again..get a proper hubnut box spanner, most parts suppliers have them at a few quid...you will need to get new hub lock washer too...have fun;~)

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Austin Shackles 21 years ago

On or around Wed, 15 Dec 2004 08:49:57 +0000, steve enlightened us thusly:

couple of points: Hub nut spanner is a good thing. It is possible to use other methods in an emergency but they're not as good. Toolmaker's clamp works well and doesn't damage the nuts, BTW. If you don;t know what a toolmaker's clamp is you haven't got one :-)

Lock washer: depends how often it's been used. The lockwasher gets bent in

2 places, one to lock the inner nut and one to lock the outer one. You should never re-bend it in the same place, as it can crack and bits fall off. However, there's no reason I can see not to bend a different bit, which has not been bent before. This is especially useful if pulling the hub off for a looksee - at which point, you've not necessarily ordered anything.

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Mike Buckley 21 years ago

Yes indeed - when you've pulled the thing apart, if you have a nice wear-ring on the stub axle, consider changing that otherwise the new seal won't be doing its job anyway.

IIRC (some?) have a seal inside the stub axle itself - this is nicely hidden behind a bush - I certainly wasnt able to change that myself so took it to a dealer to ahve the bush removed and a new seal inserted. It's supposed to stop oil coming down the half shaft from the diff.

Check your axle breather - a common cause of this problem

Pads will need renewing as well of course.

Not a massive job - have fun.

Mike.

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