1988 rear brake caliper piston (Page 1/1)
england006 AUG 11, 10:14 PM
I did a rear brake caliper rebuild and am having trouble pushing the piston back into the caliper
I have a tool to twist the piston but it doesn't go all the way in. Do I just press the piston in wo twisting like the front caliper? This back caliper has the ebrake screw.
Im afraid pressing it will damage something
Any suggestions?
theogre AUG 12, 12:13 AM
Turning needs force push in and turning to "grab" inner piston.
See my Cave, Rear Piston notes

You have the iron part on front of Al shell removed?
Yes, Try pushing in via See my Cave, Clamp Method notes
88 piston pushed in should be close or same as older years for length.

Note either method often fails when you have bad piston. or Might retract but piston is still "dead."
Big one is Inner guts blows out back of piston = "dead" piston.
P-brake and Service/Main brakes can have problems even w/o that issue w/ "dead" piston. read rest of brake section.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

Fhluckles AUG 12, 07:01 PM
I just recently took apart and put back together an 88 rear caliper and at first I was having issues with the piston wanting to go into the caliper at a slight angle. What I ended up doing is running to O'reillys real quick and getting the biggest c-clamp I could find (6inches is what I think it was) and I c-clamped the piston in until the e-brake twisting thingy (technical term, I promise) was in as far as it could with the caliper in the way, and then I used a socket (3/4 i think, possibly deepwell) to act as a spacer between the clamp and the e-brake mechanism to finish the clamping. I also put a small amount of brake fluid around the cylinder and that may have helped slide it in a little.