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Bad Calipers?

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Old Apr 9, 2007 | 12:48 PM
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Bad Calipers?

Okay i have been chasing this squeak while braking for along time..... posted several times on here. I had new pads and rotors and shortly after developed a bad grinding/warped rotor sound. I didnt belive it cause the brakes where all new so i kept driving it, and taking the brakes apart and inspecting them to see if i could find anything...Nothing

So 8000 miles later i broke down and took my farley new rotors in to be turned and alas... one of the rotors was warped really bad.... but my dumba** didnt mark what side it came from, so i have no idea what caliper would cause it...

Anyways I turned the rotors and got some new thermo quite brake pads and the problem was fixxed... then a couple of days later i could hear it faintley comming back and after a couple hundred miles its deffinetly back... So i think i might have a bad caliper that could be hangin up or somthing causeing my brakes to overheat and warp... only problem is which one..

And No i havent slamed on the brakes at any point...

Sorry for the lengthy story...

Any help?
 
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Old Apr 9, 2007 | 03:16 PM
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It could actually be a brake hose internally collapsing. I have seen this. It will not let the fluid move freely back to the master cylinder and hold pressure on the caliper piston.
 
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Old Apr 9, 2007 | 04:54 PM
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caliper slides back and forth on two pins. you took out the small bolts to pull lthe caliper off. --- take the two pins out and wiwre brush, then anti sieze them. they must slide very easy in and out. little rubber boots keep the crud and water off them. make sure you have anti sieze or brake lube on the ends of each pad and back side where puck pushes. if things are dragging, you will see the damage on the disk.
 
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Old Apr 9, 2007 | 06:00 PM
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ya i made sure the calipers floated properly
 
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Old Apr 9, 2007 | 09:23 PM
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my old 89 F250 had a recall on the front calipers. seems the pucks were too big and when they got hot, stuck in the bore and would not release. have not heard of that problem in 15 years, but you might push the pucks in all the way with a c-clamp, then put a 2 x 4 in the hole and pump it back out with the brake pedal-- do it 2-3 times to make sure everything is free.---- that and the two pins is all there is to it!
 
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Old Apr 10, 2007 | 12:07 AM
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I'd replace the brake hoses. My cousin's 98 did the same thing.
 
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Old Apr 20, 2007 | 04:21 AM
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A rotor can also warp if you are tightning it down with an impact and the torque is uneven.
 
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Old Apr 20, 2007 | 06:59 AM
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Nope no impact...
 
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Old Apr 20, 2007 | 10:25 AM
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I went through this recently with my truck. In my case it was the slide pins. If your pistons are free, I'd replace the line, not uncommon.
 
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Old Apr 20, 2007 | 10:31 AM
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The brakes feel fine... if the lines were spongy i would feel it in the pedal... i know the calipers are floating but im not sure how easy they do...
 
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Old Apr 20, 2007 | 11:22 AM
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Originally Posted by BURNSTOUGHFORD
Nope no impact...
did you actually use a torque wrench and torque any and all bolts/nuts involved to specs?
 
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Old Apr 20, 2007 | 12:02 PM
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yup.... 100 ftlbs
 
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Old May 28, 2009 | 04:41 PM
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I'm thinking this my problem..

Originally Posted by steve(ill)
caliper slides back and forth on two pins. you took out the small bolts to pull lthe caliper off. --- take the two pins out and wiwre brush, then anti sieze them. they must slide very easy in and out. little rubber boots keep the crud and water off them. make sure you have anti sieze or brake lube on the ends of each pad and back side where puck pushes. if things are dragging, you will see the damage on the disk.
I just put front pads on the other day..The brakes are still low along with a burning brake smell..The top slider pin was fine on both driver and passenger sides..The bottom pin was stuck on both sides..Any suggestions on how to free them up..Is giving them a shot of PB Blaster goin to be good enough?? Thank you much..
 
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