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post #1 of 5 (permalink) Old 10-30-08, 06:29 PM Thread Starter
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New rear brake caliper: bites rotor always?

I just returned from garage where new rear brake calipers were installed. But there is kind of grinding sound (low pitch), which goes away when I step on brake pedal. When I arrive to my home (~10mile), I inspected rear break and found rotor and other srrounding parts are so hot that I can not touch more than 0.5 sec. I don't smell any burning odor though. I think new calipers bite rotor at all time, just as if I had been step on the brake lightly all the way.
Is this normal for new caliper to bite rotor? Or installated wrong? or wrong part? What can I do? Why is this happening?
Please help me!!! Thank you for your help.

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post #2 of 5 (permalink) Old 10-31-08, 07:27 PM Thread Starter
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Re: New rear brake caliper: bites rotor always?

Is there a possibility that emergency brake has not been correctly adjusted during rotor uninstall / reinstallation?
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post #3 of 5 (permalink) Old 11-01-08, 04:34 PM Thread Starter
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Re: New rear brake caliper: bites rotor always?

Went back to the guy who installed calipers but he had no idea why the grinding sound. He took out tires, calipers and rotors. Everything came out with very little effort, meaning none of them was sticking. One thing found was one side of emergency brake shoe came loose from the metal backer that glued on. We took out loose resin piece that was inside of rotor where emergency brake is. It didn't seem the backer metal (shoe) has touched rotor at all.
I returned back with nothing fixed. I still have grinding noise and it goes away when I apply brake. Now I don't even know if it is from brake or something else but grinding sound only happened after the new caliper installation.
Rotor is really hot, I can touch front rotor (that we didn't change anything) but rear ones are really hot with only a couple miles of test driving... I still think the caliper is not releasing but why? And as I said, caliper could be removed with little effort.
I am going to have to go to some other place but I don't know what I can expect... Any one has any idea?
Oh, one thing, what happens if air is in the brake fluid line? Would air in the brake line prohibit from the caliper to fully retract?
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post #4 of 5 (permalink) Old 11-15-08, 05:06 PM
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Re: New rear brake caliper: bites rotor always?

Quote:
Originally Posted by great4702 View Post
... Would air in the brake line prohibit from the caliper to fully retract?
Not likely. You may however have a blockage in the line.
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post #5 of 5 (permalink) Old 11-16-08, 04:18 AM
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Re: New rear brake caliper: bites rotor always?

I just Installed new calipers and pads on the rear of my vic and i had a similar grinding/squealing noise i went back bought the more expensive pads not the economy ones and it works fine now no more grinding. how ever i put the cheap ones on the front and they work fine, it worth a shot to see what pads the garage is using.

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