Cant retract rear caliper pistons on '95 A6 - why screw?

[mike]

Not wishing to add insult to injury but I suspect that as both are now leaking but were fine before you started then the leaks are linked to your previous attempts at pushing the pistons back in that you applied to much force and broke something inside the calliper.

Seizing up rather than leaking is the normal failure mode.



--- On Tue, 3/6/08, Tyson Varosyan <tigran at tigran.com> wrote:

> From: Tyson Varosyan <tigran at tigran.com>
> Subject: RE: Cant retract rear caliper pistons on '95 A6 - why screw?
> To: quattro at audifans.com
> Date: Tuesday, 3 June, 2008, 7:18 AM
> So can someone please explain to me the logic as to why
> these are made in a
> way that you have to twist and push? Seems idiotic to me -
> every other car I
> have had, you just press them in. The fronts on this car
> you just press in.
> On this thing, you need a $50 special tool collecting dust
> in a drawer until
> one day every other year that you will need it and cant
> find it!
> 
> Also, when I manufactured the tool myself from a picture
> that someone sent
> me, I got the pistons to retract. The bad part is that as I
> was screwing
> them in, both leaked brake fluid from every orifice they
> had - the seals are
> completely blown. So I am waiting on the new calipers to
> get here in the
> mail - what a PITA!
> 
> Tyson Varosyan
> Technical Director, Uptime Technical Solutions LLC.
> tyson at up-times.com
> www.up-times.com
> 206-715-TECH (8324)
> UpTime/OnTime/AnyTime
> 
> 
> -----Original Message-----
> From: quattro-bounces at audifans.com
> [mailto:quattro-bounces at audifans.com] On
> Behalf Of Grant Lenahan
> Sent: Monday, June 02, 2008 5:28 PM
> To: George
> Cc: quattro at audifans.com
> Subject: Re: Cant retract rear caliper pistons on '95
> A6
> 
> My 2002 S6 screws clockwise.
> Grant
> On Jun 2, 2008, at 8:20 AM, George wrote:
> 
> > You do have to screw the piston back in using one of
> the  
> > aforementioned
> > tools.  However, you turn in the opposite direction,
> that is from  
> > right to
> > left, as though you are trying to screw it out. By
> pressing in hard  
> > while
> > turning, it will go right in. Watch the fluid level in
> the reservoir.
> >
> > George Sidman
> >
> >
> > _______________________________________________
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