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#Post#: 57803--------------------------------------------------
Rear Hub seal on S3?
DIR By: bill773mini
Date: April 19, 2013, 8:44 am
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Hello,
I'm new on here and have a question. I have a 109 S3 and an
issue with the rear hub leaking oil. Is this the hub seal failed
and if so how urgent is it to fix? Will a couple of weeks (or
approx 50 miles) do or is it an urgent job?
HTML http://i194.photobucket.com/albums/z229/bill773mini/IMG_3021_zps907b3abb.jpg
Thanks
Bill
#Post#: 57804--------------------------------------------------
Re: Rear Hub seal on S3?
DIR By: hippydave
Date: April 19, 2013, 9:29 am
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better to do sooner rather than later as the oil will be all
over the drum and shoes not just the outside, it dosnt take long
and saves wasting oil aswell.
#Post#: 57806--------------------------------------------------
Re: Rear Hub seal on S3?
DIR By: ajb403
Date: April 19, 2013, 9:32 am
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First thing I'd check would be the axle breather to make sure
it's not blocked (unscrew it and give it a shake, you should be
able to hear the ball bearing, if not wash it in a solvent of
your choice), if it is blocked then when the diff warms the
increase in internal pressure can blow the oil past the seal.
Mine weeps very very slowly, nowhere near as bad as yours, maybe
a teaspoon of oil gets out every 4-6 months but the hub cap
traps it. As a temporary fix you could try pulling off the hub
cap (it may be filled with oil so be prepared to catch it!),
cleaning it up and then run a bead of hylomar instant gasket
stuff round the edge when you refit it. If you have blown a
seal there I'd also check inside the brake drum just to make
sure you're not leaking onto the brake shoes too.
#Post#: 57807--------------------------------------------------
Re: Rear Hub seal on S3?
DIR By: bill773mini
Date: April 19, 2013, 9:57 am
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Thank you very much for the fast replies. Great advice too, it
only really happens on longer runs (20 - 25 miles) too so the
blocked breather could well be the culprit. Thanks guys I'll get
on it at the weekend.
Bill
#Post#: 57809--------------------------------------------------
Re: Rear Hub seal on S3?
DIR By: 0jonny0
Date: April 19, 2013, 10:28 am
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Its an easy job and the parts are cheap, get it done as soon as
you can, bearings and diffs are alot more coin and hassle.
#Post#: 57810--------------------------------------------------
Re: Rear Hub seal on S3?
DIR By: Lucy
Date: April 19, 2013, 10:44 am
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First thing I'd do is to tighten up the drive flange bolts and
see if it stops leaking
#Post#: 57812--------------------------------------------------
Re: Rear Hub seal on S3?
DIR By: Doug_T
Date: April 19, 2013, 10:50 am
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--- Quote from: Lucy link ---
>
> First thing I'd do is to tighten up the drive flange bolts and
see if it stops leaking
>
--- End Quote ---
^^^This. Also if that's a very late SIII with the plastic hub
caps like the boingy ones I'd check to see if it hasn't perished
and cracked.
#Post#: 57902--------------------------------------------------
Re: Rear Hub seal on S3?
DIR By: bill773mini
Date: April 20, 2013, 2:04 am
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Thanks again for all the advice. Sadly I have no idea on its
actual age as it was on a 2A V5 when I got it. Is there a way to
date it without a vin?
#Post#: 57903--------------------------------------------------
Re: Rear Hub seal on S3?
DIR By: parksy64
Date: April 20, 2013, 2:06 am
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It's definately a plastic cap on the hub- so check that first.
For dating, decent photos of the inside and out will help us
give a pretty good stab at the date.
#Post#: 57907--------------------------------------------------
Re: Rear Hub seal on S3?
DIR By: bill773mini
Date: April 20, 2013, 2:56 am
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Thanks, I'll get some photos up.
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