rear disc brakes on a 99 Park Ave, how to compress the calip - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 03-13-2008, 08:46 PM   #1
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Default rear disc brakes on a 99 Park Ave, how to compress the calip

ok whats the deal with compressing the caliper piston on this car ? Are these the screw in kind I have heard about ?? How do you do it without a tool ??

Thanks
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Old 03-13-2008, 08:54 PM   #2
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yes, they twist. DO NOT use a c-clamp, you will destroy them.

best thing to do is buy the $10 dollar cube that works with a 3/8 ratchet. but sometimes you can get it to go with needlenose pliers. just dont force it. i would advise against the plier approach though.
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Old 03-13-2008, 09:30 PM   #3
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i did it with the needle nose ,do you just screw it all the way in untl it clears the pads ?

How does it come out when you brake ?
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Old 03-13-2008, 09:36 PM   #4
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Quote:
Originally Posted by goldfinger22
i did it with the needle nose ,do you just screw it all the way in untl it clears the pads ?

How does it come out when you brake ?
yes twist it in as far as it will go.
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Old 03-14-2008, 12:16 PM   #5
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Quote:
Originally Posted by samueljackson
yes, they twist. DO NOT use a c-clamp, you will destroy them.
Not to sidetrack this thread, but I wasn't aware that there are caliper pistons that rotate. Can anyone tell me what year started using that type for disc brakes?
Thanks.
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Old 03-14-2008, 05:47 PM   #6
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Quote:
Originally Posted by billha
Quote:
Originally Posted by samueljackson
yes, they twist. DO NOT use a c-clamp, you will destroy them.
Not to sidetrack this thread, but I wasn't aware that there are caliper pistons that rotate. Can anyone tell me what year started using that type for disc brakes?
Thanks.
idk when the H bodies started, i believe it to be 2000, but i can say that the W bodies had them as early as 1990. and they are only on the rear. the front pistons are still compressed.
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