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

[Grant Lenahan]

It has become increasingly common, and, I believe, has to do with teh  
self-adjusting action of a parking brake ( drum) on a disk caliper.

Grant
On Jun 3, 2008, at 2:18 AM, Tyson Varosyan wrote:

> 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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