Can't compress rear brake piston

[patches]

Hi Everyone,

I am replacing the pads on my rear brakes, they were stuck in their real good. I finally got them out and got to pushing the piston back into the brake body, but they wouldn't go in by hand. Before I could stop him my buddy pressed the rear brake lever down a bit

It doesn't look like the piston is entirely out of the brake body but I have no idea if it was pushed out too far, I still have maybe a quarter inch between the piston and the brake disk.

At this point I used a wooden wedge to try to push the piston back in but no go. Is their a way to tell if the piston is too far out or if my problem is something like the return hole/port thing in the master cylender is blocked? If that is it, where is that and what is the best way to unblock it?

Thanks,
Patches

[hampshirehog]

The best thing to do is to take the caliper to bits and give it a bloody good clean. Chances are alien beings have made a nest behind the pistons.......(you'll see what I mean if you pull the thing to bits).

[hikermikem]

The best thing to do is to take the caliper to bits and give it a bloody good clean. Chances are alien beings have made a nest behind the pistons.......(you'll see what I mean if you pull the thing to bits).

+1 you will be amazed at the gunk you find in there...

[patches]

Alright, will do.

Should I pick up a rebuild kit now or wait and see how it looks?

[allojohn]

When you buy the rebuild kit buy OEM, the aftermarket kits are not up to much IMO.

[cowboyup3371]

Get a rebuild kit now so you know everything is done right; especially since your life is riding on those brakes. While you are at it, do the fronts and both master cylinders as well as the brake lines.