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87 Rear Piston won't push back in

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Old 05-14-2018, 08:50 AM
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87 Rear Piston won't push back in

I got an 87 camaro with rear DM calipers and I can't screw the pistons back in. I have the proper tool to twist the piston and push it back in but it just won't go back in. I can get the piston to turn but it only turns a little bit and stops turning and it won't go in at all. What am I missing???
Old 05-14-2018, 11:12 AM
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Car: One owner '88 IROC 50k
Engine: L98 with bolt ons.
Transmission: T56
Axle/Gears: 3:42 again
Re: 87 Rear Piston won't push back in

What I did with mine when I still had them was to take off the arm on the back and turn the screw in a bit push in the Piston some. And repeat till it's all the way in. I did it that way to avoid damage to the seal around the screw.
Old 05-14-2018, 11:26 AM
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Car: 1988 IROC-Z
Engine: 350 TPI
Transmission: T56 swap ongoing
Axle/Gears: 2.77 9-bolt Posi
Re: 87 Rear Piston won't push back in

Are you sure that the brake line isn’t the problem? If you open the bleed scream will it retract?
Old 05-16-2018, 11:02 AM
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Re: 87 Rear Piston won't push back in

daferris, thanks I will give that a try.

Galaxie500xl, I was suspecting the hose could be acting as a check valve but the car only has 45K miles on it. I'm going to pull the banjo bolt off and check it if the suggestion daferris gave me does work.
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