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Re: How do i push piston in rear caliper back ?

Hi Kenn;

    You have to screw the piston back in; you cannot push it in. I can't
remember how the '87 pistons are configured, but my '91 200q pistons have
two opposed slots into which a pair of 6" needle nose vise grips fit quite
nicely to apply the turning force. There is actually a tool available for
this purpose, but I find the vise grips work quite well.
    Whichever tool you use, be careful not to cut the piston boot!


Fred Munro
'91 200q  248k km
-----Original Message-----
From: Kenn Thyrsted Nielsen <thyrsted@olsy.dk>
To: Quattropedia <quattro@coimbra.ans.net>
Date: Saturday, March 28, 1998 3:26 PM
Subject: How do i push piston in rear caliper back ?

>As it is time to change the pads, i set my mind in doing it this evening. -
>Trying to force the piston back in the caliper, i found that it is
>virtiually impossible.
>Even when applying a large ammount of "near violence" nothing happened.
>Having changed pads myself on my older non-Q and non 200 Audis, i never had
>to use this much force.
>As there isn't any sign of malfunction; braking is okay, pads is just worn,
>i wonder if there is some sort of valve that makes it nessecary to bleed
>brake in order to make room for the new pads ?
>'87 200TQ Avant