How do i push piston in rear caliper back ?

[frankbauer@thevine.net]

kenn sez:
>i wonder if there is some sort of valve that makes it nessecary to bleed the
>brake in order to make room for the new pads ?

usually rear caliper pistons require a turning motion to move them back in.
this is necessary because of the requirements for emergency/parking
brakes when brake fluid pressure is not available.  i think your piston
takes a hex bit (8mm?) in the center.  you turn the piston clockwise
while applying compression.  if you don't have the correct tool, you can
carefully grip the edges with a pair of slip joint pliers to help you
turn the piston.  make sure you don't pinch the rubber boot.  also you
must check the reservoir to prevent overflow while you are compressing
the caliper piston.

frank

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