Cant retract rear caliper pistons on '95 A6

[Tyson Varosyan]

Hi Guys,

 

Doing a brake job on my pop's 1995 A6Q. The front brakes were as easy as can
be - we did the pads and rotors in record time.

 

The rear is another story. We removed the old rotors and pads, but are
unable to push in the caliper pistons. I can usually do it by hand, but here
I went and got a special press tool for the job. I exerted at least 250 foot
pounds of torque on a screw-type press unit (with a 2ft breaker bar). That
piston just won't go in! Obviously, it is possible that the caliper is just
bad, but I have a hard time believing that BOTH rear calipers went bad at
the same time and the fact is that I cannot get either one of them to push
back in. There has got to be a trick! I remember on an old Subaru that I had
(an '83) you had to twist the piston 90 degrees for it to manually go in. I
tried that here, but although the piston does spin, it did not go back in.

 

I am frustrated, dirty and tired and the car is in pieces in my driveway.
HELP!

 

BTW, NAPA shows reman'ed calipers are $250ea with a $100 core trade-in. Bit
steep. 

 

Tyson Varosyan

Technical Director, Uptime Technical Solutions LLC.

 <mailto:tyson at up-times.com> tyson at up-times.com

 <http://www.up-times.com> www.up-times.com

206-715-TECH (8324)

UpTime/OnTime/AnyTime