Help! BRAKE SQUEEEEEEAL! - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 03-09-2012, 07:07 AM Thread Starter
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Help! BRAKE SQUEEEEEEAL!

I can't get my rear brakes to stop squealing during braking. They are Motorcraft rotors and pads that were replaced no more than 7 months ago. I pulled them off and applied the brake lube to the rear of the pads and pins, which quieted them for a week. What gives? How do I get rid of the squeal? New pads? What?

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post #2 of 12 Old 03-09-2012, 09:25 AM
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I've never ran into this on my truck but have ran into this problem on wife's escalade. I used the spray several times and it would go away for awhile then come right back a few weeks later. After several times doing this I noticed the caliper pistons were wearing uneven on pad back so I filed pistons really well and then used the brake lube you put on with a brush and that's been a year ago and no issues. So you may check the pistons?
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post #3 of 12 Old 03-09-2012, 09:34 AM
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My truck did it to in the rear. New rotors new pads. Towing fixed it real quick.


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post #4 of 12 Old 03-09-2012, 09:49 AM Thread Starter
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I've never ran into this on my truck but have ran into this problem on wife's escalade. I used the spray several times and it would go away for awhile then come right back a few weeks later. After several times doing this I noticed the caliper pistons were wearing uneven on pad back so I filed pistons really well and then used the brake lube you put on with a brush and that's been a year ago and no issues. So you may check the pistons?
Ok, I'll start there. I used the brush on lubricant as well. I wondef if it might have something to do with the emergency brake drum pads because I did notice some rub marks on the inside of the rotor. Could that have something to do with it?

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post #5 of 12 Old 03-09-2012, 12:16 PM
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It very well could but seems weird that your noise is only under braking. The way I was taught that is almost always friction between pad and caliper?
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post #6 of 12 Old 03-09-2012, 05:48 PM
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Take the pads off and sand them down with some 80 grit just enough to roughen up the braking surface. They may not have seated right or they could have gotten some contaminates on them.

motorcraft rotors like most rotors come with an anti-rust film on them, they should be cleaned before installing on a vehicle.

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post #7 of 12 Old 03-10-2012, 07:26 AM Thread Starter
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Originally Posted by sinner6.0L View Post
Take the pads off and sand them down with some 80 grit just enough to roughen up the braking surface. They may not have seated right or they could have gotten some contaminates on them.

motorcraft rotors like most rotors come with an anti-rust film on them, they should be cleaned before installing on a vehicle.
Thanks Matt, I'll give it a try!

Denis "Lt. Sled"
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post #8 of 12 Old 03-10-2012, 11:13 AM
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I had this same issue after new pads but it was sand that got into the pad. Sanded them down and all was good.

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post #9 of 12 Old 05-22-2012, 06:48 AM Thread Starter
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I'm reviving my thread because I still cannot get rid of the squeal. All 4 pads and rotor were sanded and I re-seated the pads. I'm about ready to chuck these pads and go aftermarket.

Denis "Lt. Sled"
2006 F-350 Crew Cab Long Bed Dark Shadow Gray

462hp / 927ft-lbs Corrected
ARP Head Studs, NUC Motorsports Oil Bypass, CFM+ Intake Elbow, Wicked Wheel 2
Bullet Proof Diesel FICM w/Atlas 40, SCT SF3 w/SPD by TSD! Grover Fire Truck Horns
Cab Light Mod, Blue Spring Mod, Zoodad Mod, High Idle Mod, Lost EGR Mod

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post #10 of 12 Old 05-22-2012, 10:04 AM
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I'm having the same problems, but with different pads and rotors. I think it may be because of my e-brake, since it had exploded in late January and I have yet to install a replacement.

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