brake piston retraction tool

Kneale Brownson knotnook at
Mon Jun 10 08:06:03 EDT 2002

There's a little cube with a "selection" of projections on it to fit into
the notches in the rear brake piston so you can turn it with a 3/8" drive
ratchet and extension.  I got mine at a FLAPS.  It's a KD 3163.  You have
to grind off two of the bumps from one of the faces with four projections
to fit the Audi piston.

If you have to put more force on the piston than you can supply by leaning
on the ratchet while turning it in, you probably need to rebuild the
caliper, as Bernie indicated in his response.

At 08:49 PM 06/09/2002 -0400, Bryan Foster wrote:

>What tool do you use to retract the rear caliper piston when changing
>pads?  Where do you buy such a tool?
>Does turning it clockwise alone retract it or do you have to apply
>pressure?  How many revolutions does it take to get it in?  I tried to
>spin it about 10 revolutions with a pair of needle nose but it didn't seem
>to be moving much.
>Thanks for any advice.
>-Bryan Foster
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