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Car Forum / Volkswagen / Water Cooled Volkswagen Cars / May 2004

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Passat rear disc replacement

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Chris Melluish - 27 May 2004 15:19 GMT
I decided it was time to replace the rear discs of my 1996 Passat after
almost 120,000 miles.

Looking at the Haynes manual it looked fairly straightforward.

I bought some new discs, and set about fitting them. All went well until I
tried to undo the caliper securing bolts. It transpired, although no mention
was made in Haynes, that they were round-headed bolts with 8mm hex sockets.
I could not budge these bolts, although I have only tried one side so far. I
even went out and bought a set of 3/8" drive hex bits with no avail.

Any tips?

--
Chris Melluish
Nick Ramsay - 27 May 2004 20:15 GMT
>I decided it was time to replace the rear discs of my 1996 Passat after
>almost 120,000 miles.
[quoted text clipped - 8 lines]
>
>Any tips?

Apply liberal amounts of penetrating fluid, wait a couple of hours,
impact driver & large hammer should get them off.
KarlosS - 28 May 2004 10:12 GMT
> >I decided it was time to replace the rear discs of my 1996 Passat after
> >almost 120,000 miles.
[quoted text clipped - 11 lines]
> Apply liberal amounts of penetrating fluid, wait a couple of hours,
> impact driver & large hammer should get them off.

You probably won't be able to get in there with an impact driver.
I bought 4 new bolts from the VW stealership at the total cost of one pound
and used molegrips to loosen the old one.
Oh, and make sure you have a G clamp or similar to hand to make the pistons
retract ( I had to cycle to B&Q, while the car was in bits  :))
HTH
Karlos
Alex Hopwood - 29 May 2004 10:55 GMT
You should check if you need the special tool for pushing the piston back
in. It needs to push AND turn the piston if it's anything like the Corrado.
Just pushing doesn't work on the rear brakes, probably not without breaking
something at least !

> > >I decided it was time to replace the rear discs of my 1996 Passat after
> > >almost 120,000 miles.
[quoted text clipped - 23 lines]
> HTH
> Karlos
Chris Melluish - 30 May 2004 09:49 GMT
I went to a VW dealer and bought four new bolts. They were over ?1 each, and
were ordinary hex-headed bolts - i.e. no hex socket.

I said they were the wrong ones and was told they had changed the design
because the others were so hard to undo.

I have the special tool for retracting the pistons.

I'll try again this weekend.

--
Chris Melluish

> You should check if you need the special tool for pushing the piston back
> in. It needs to push AND turn the piston if it's anything like the Corrado.
[quoted text clipped - 31 lines]
> > HTH
> > Karlos
 
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