Frozen Calipers??? - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

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post #1 of 11 (permalink) Old Feb 11th, 19, 03:00 PM Thread Starter
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Bruce
 
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Frozen Calipers???

Stock Disc brake conversion to a 69. Everything is new except the "round" distribution part on the drivers side of the booster. Bleed the brakes, started the engine pushed on the pedal and went to the floor. Calipers are frozen and cannot turn the rotors, back wheels turn fine. Loosed the caliper hoses to relief any pressure. Still will not turn. Any ideas what to do next. Short rod on the new booster and MB.
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post #2 of 11 (permalink) Old Feb 11th, 19, 03:52 PM
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Al
 
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Re: Frozen Calipers???

Crack the bleeders. Pry the inner pads back into the caliper housing using appropriate
size pry bars or screw drivers. Pry on the backing plates. Not the brake pad surface.
Something is miss matched. Wrong pads or rotors ? Or the calipers are bad.

Al

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post #3 of 11 (permalink) Old Feb 12th, 19, 05:40 AM Thread Starter
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Re: Frozen Calipers???

I ordered new calipers from NAPA. . . .pick up this am and see if that is the issue. When I opened the bleeders and disconnected the brake hose, it did nothing.
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post #4 of 11 (permalink) Old Feb 12th, 19, 05:51 AM
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Re: Frozen Calipers???

Not an expert but I think your pushrod is too long.

Don

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post #5 of 11 (permalink) Old Feb 12th, 19, 06:44 AM
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Ed
 
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Re: Frozen Calipers???

Disconnect the push rod and see what happens.
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post #6 of 11 (permalink) Old Feb 12th, 19, 07:22 AM
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Re: Frozen Calipers???

If he opened the bleeder AND disconnected the brake hose, that would eliminate the rod as the issue.

Not saying the rod ISN'T too long. Just saying he already eliminated it as a source on this issue.

OP. Have you tried to pry the inner pad back into the caliper a bit, as Al suggested?
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post #7 of 11 (permalink) Old Feb 12th, 19, 07:57 AM Thread Starter
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Bruce
 
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Re: Frozen Calipers???

Just replaced the calipers, will bleed with help tonight. The rod is the short version. Could it be the "round" pressure valve next to the booster? That is the only used part! Appreciate the comments.
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post #8 of 11 (permalink) Old Feb 12th, 19, 08:00 AM
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Re: Frozen Calipers???

Quote:
Originally Posted by The Camaro Guy View Post
Just replaced the calipers, will bleed with help tonight. The rod is the short version. Could it be the "round" pressure valve next to the booster? That is the only used part! Appreciate the comments.
Not if you removed the brake line. That took everything except the caliper out of the equation.
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post #9 of 11 (permalink) Old Feb 12th, 19, 08:18 AM
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Re: Frozen Calipers???

Were the caliper pistons stuck in the applied direction (out) AFTER removing them from the car ?
If not the new calipers probably won't help.

Al

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post #10 of 11 (permalink) Old Feb 12th, 19, 08:39 AM
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Don
 
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Re: Frozen Calipers???

Shorten the rod at the clevis. Should be adjustable. Your rod is likely not fully retracting when the pedal is released. This is a pretty common problem.

Is this a new master?

Don

1969 Camaro LSA 6L90E AME subframe and IRS
1969 Camaro vert LS3 4L65E Ridetech level 2 - sold
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post #11 of 11 (permalink) Old Feb 12th, 19, 08:46 PM
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Re: Frozen Calipers???

The caliper bracket may not be centering the caliper over the rotor. I think the outboard pad has very little clearance, meaning the caliper does not have much extra room to move a brand new outboard pad away from the rotor. My buddy bought pickup pads by mistake & they are a tiny bit thicker. The outboard pad was out of room & it stuck the rotor.

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