URS4 rear caliper problem

[hunker7]

So the brake fluid is coming past the hand brake leaver so, is there a rubber seal there somewhere, and if yes where do I get one?

[Error404]

you need a seal kit for the caliper, try brakeparts.co.uk Justin is a good lad he will sort you out.

[hunker7]

Is the diameter of the hand brake lever the same as on, let's say A 100?

[Error404]

Its not that seal you need, there is one on the end of the screw shaft that the piston runs on, that is what is leaking. The lip seal under the lever is just supposed to keep the water out and the grease in.

[hunker7]

http://www.s2forum.com/forum/showthread.php?t=52372

In Post #12, item number 14?

[AndyP]

Yes, that looks like the one, you're also going to need some of these to get the circlip ( item 21 ) out

http://www.ebay.co.uk/itm/Long-Nose-...item48363468c5

[hunker7]

Got the tool to take it apart, just took it apart and didn't put one back in as there wasn't one so. Long story

[UrS4boy]

UrS4/S6 rear caliper rebuilding info

Here are a few things for you to read:

http://forums.quattroworld.com/s4s6/msgs/121484.phtml

http://12v.org/urs/FredMsAudiUrS4E-brakeCamRehabDIY.pdf

http://www.20v.org/brakere.htm

[hunker7]

Does anyone know the size of the O-ring? Also, is the O-ring the same as in calipers with 38mm piston?

[hunker7]

http://www.ebay.co.uk/itm/Audi-A8-V8...item4193ceae52

this will do?

[UrS4boy]

http://www.ebay.co.uk/itm/Audi-A8-V8...item4193ceae52 this will do?

Error404 gave you the answer. You should follow it.

you need a seal kit for the caliper, try brakeparts.co.uk Justin is a good lad he will sort you out.

[hunker7]

Error404 gave you the answer. You should follow it.

they don't have it in stock and I sort of need it urgently.

[UrS4boy]

The AAN rear caliper part numbers are 447615424 and 447615423. These are also the 1989-94 Audi V8 rear caliper PNs. There is no cross to the 1995 A8 and newer.

So that ebay kit *might* be correct. Check the PNs of the application, not the words "V8 and A8"

[hunker7]

In description it says V8 from 1988-1994. So I've ordered a set, can always send it back if it's not the right one.

[missmouse]

Calipers arent that expensive now, for all the hassle, you would be better to get a recon caliper. I recently got one for my RS4 for about £70 ex