Help with Rear Calipers
#1
Help with Rear Calipers
I have been working all new brakes this winter...finished the fronts fine and i am about 60% done with the rear but I can not seem to be able to compress the piston back enough so that the new pads can go over the new rotor (its about 1/8 inch) too narrow. It appears to be a pin associated with parking brake thats stoping but my hope is someone else has had the problem or knows how to fix it.
#4
Re: Help with Rear Calipers
No need to.
fitz796: the parking brake might be keeping it from going in if someone had adjusted it, but it is a rarity that anyone ever touches that adjustment. Are you using a c-clamp to compress the piston?
fitz796: the parking brake might be keeping it from going in if someone had adjusted it, but it is a rarity that anyone ever touches that adjustment. Are you using a c-clamp to compress the piston?
Last edited by shoebox; 01-26-2011 at 06:47 AM.
#6
Re: Help with Rear Calipers
the brake is fully released and i disconnected the cable to the parking brake. I've tried using the c-clamp but not with a piece of wood or spinning it yet. Not sure if someone else adjusted it before I bought it because the brakes havent been touched since I bought the car. from the looks of it, it appears like there is a small rod that is preventing the piston from going back any further and this rod is what pushes the pad out when the parking brake is engaged. Im completely stumped
#7
Re: Help with Rear Calipers
You don't need to spin the piston as you compress it, at least not on your 95 Z28. I generally just leave the old pad on the piston to compress it with a C-clamp.
Shoebox has a diagram of the rear caliper assembly.
http://shbox.com/1/rear_caliper.jpg
The parking brake actuator lever (#26) pushes on the pushrod (#22). My version of the same diagram does not show the dotted line which appears to indicate one of the brake collar return springs (#12) goes over the pushrod. I don't think it does. There is a parking brake lever adjusting screw (#32), and maybe that is screwed in too far and somehow preventing the system from compressing.
Did you remove the #26 lever so the pushrod could move out of the caliper?
Shoebox has a diagram of the rear caliper assembly.
http://shbox.com/1/rear_caliper.jpg
The parking brake actuator lever (#26) pushes on the pushrod (#22). My version of the same diagram does not show the dotted line which appears to indicate one of the brake collar return springs (#12) goes over the pushrod. I don't think it does. There is a parking brake lever adjusting screw (#32), and maybe that is screwed in too far and somehow preventing the system from compressing.
Did you remove the #26 lever so the pushrod could move out of the caliper?
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