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how do i get rear caliper piston back?

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Old 06-30-2011, 04:57 AM
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Car: 91 formula
Engine: 350 tpi
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how do i get rear caliper piston back?

i used an allen wrench like guy at garage said but with that thing attached to it (dont know what to call it) hows it suppose to turn? it did start to turn once but made wierd noise so i stopped b4 i broke something.
Old 06-30-2011, 05:30 AM
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Car: Met. Silver 85 IROC/Sold
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Re: how do i get rear caliper piston back?

Originally Posted by bbsr72
i used an allen wrench like guy at garage said but with that thing attached to it (dont know what to call it) hows it suppose to turn? it did start to turn once but made wierd noise so i stopped b4 i broke something.
If you have a 91, I assume you have PBR's. If that's the case, use a C-clamp and push the piston straight in.

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Old 06-30-2011, 06:30 AM
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Re: how do i get rear caliper piston back?

idk what pbr means. but yes its a 91 formula.
Old 06-30-2011, 06:36 AM
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Re: how do i get rear caliper piston back?

Originally Posted by bbsr72
idk what pbr means. but yes its a 91 formula.
82-88 cars were equipped with iron Delco-Moraine calipers and 10.5" rotors. 89+ had alum (PBR's) and 11.7" rotors.

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Old 07-02-2011, 06:12 AM
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Re: how do i get rear caliper piston back?

ok, thanx, definetly pbr then.
Old 07-11-2011, 10:02 AM
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Re: how do i get rear caliper piston back?

if you fixed your issue then disreguard, just did my brakes yesterday and had the same issue, how ever I researched it in a book and apparently you need to put a brake tool (to compress the piston in) while in place remove the parking brake lever then the piston will compress in, after it is in enough for you, put the parking brake lever about 1/8 inch from the stop on the caliper, and you should be good.
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