Hub seals

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G

Gromit

Guest
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
 
In message <[email protected]>
[email protected] (Gromit) wrote:

> 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?
>


Most likely the inner hub seal.

> 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?


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

>
> cheers,
> Gromit


Cheers
Richard

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Gromit wrote:
> 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

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;~)
 
On or around Wed, 15 Dec 2004 08:49:57 +0000, steve <[email protected]>
enlightened us thusly:

>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;~)


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.



 

beamendsltd <[email protected]> wrote in message
news:cbbb961d4d%[email protected]...
> In message <[email protected]>
> [email protected] (Gromit) wrote:
>
> > 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?
> >

>
> Most likely the inner hub seal.
>

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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