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Thread: Rear brakes on truck

  1. #1
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    Rear brakes on truck

    Had corrosion and dragging brakes so I took it to a well known mechanic. Getting some squeaking back there after the total rebuild. They texted me to see if everything was ok and I told them I might have to bring it back. I asked if they used anti-squeal and they said no. I don’t get it because most brakes will squeal without it. Anyone have a brake job where it got left out and no squeaking?

  2. #2
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    Quote Originally Posted by Bruce King View Post
    Had corrosion and dragging brakes so I took it to a well known mechanic. Getting some squeaking back there after the total rebuild. They texted me to see if everything was ok and I told them I might have to bring it back. I asked if the used anti-squeal and they said no. I donít get it because most brakes will squeal without it. Anyone have a brake job where it got left out and no squeaking?
    I almost always do the brake work myself. I have never used anything called anti-squeal on truck or other vehicle brakes, drum or disk., front or rear. I've never had brakes squeal.

    I feel left out. What kind of brakes squeal?

    JKJ

  3. #3
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    Quote Originally Posted by John K Jordan View Post
    I almost always do the brake work myself. I have never used anything called anti-squeal on truck or other vehicle brakes, drum or disk., front or rear. I've never had brakes squeal.

    I feel left out. What kind of brakes squeal?
    it is a stock truck that hauls pigs
    Last edited by John K Jordan; 03-04-2021 at 9:53 PM. Reason: fixed end quote tag

  4. #4
    Is used on both front and rear brakes at least on the elderly cars I drive. Maybe Permatex Orange was the last good quality one and purple before that but think orange is easier on rubber stuff where pins slide.

  5. #5
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    I had the problem on many cars when I forgot to use it. I spray it on the back of the pads and wait till very tacky. Maybe not turning the rotors has caused it. I have put high mileage on 3 BMW’s and always put on new discs on the 2nd or 3rd set of replacement pads with the red can of ant-squeal. Have heard many cars on the road squeaking. The squeal indicator on cars without the electronic pad thickness monitor has a much harsher squeal and on every brake application. A light squeal can’t be heard after a certain age or with damaged hearing from working on or being around certain types of machinery for 40 hours every week.
    Last edited by Bruce King; 03-04-2021 at 6:41 PM.

  6. #6
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    I think anti squeal is only for disk brakes. I have seen drums with a coil spring looped around the outer diameter. Modern vehicles do not have much extra space for such a thing and you do not want to coat the drum with rubber as it will cause overheating.
    Bill D
    Last edited by Bill Dufour; 03-04-2021 at 10:25 PM.

  7. #7
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    My truck has disc on the rear even though it’s a 2003. It looks similar to drum on the outside because of the parking brake drums.

  8. #8
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    Now that we know it has rear disks, yes they should have put anti squeal on the pad backs before installation. I do not understand why that is not factory applied on replacement pads. Did the pins or slideways get cleaned and greased?
    Bil lD

  9. #9
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    Everything back there to do with brakes was replaced except parking brake. Some pads come with a composite thin slab on the back for anti squeal but I had to coat those also.

  10. #10
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    I'm missing something, both the pad surface and rotor are wear surfaces, the pad at least losing several mm of thickness over a few 10,000's of miles. Does the spray soak through them? How does it affect braking performance? If it's some kind of lubricant that would seem to be a Bad Thing for braking.

    I've bought pads in the past that were suppose to be anti-squeal, and some that were supposed to not make as much dust. Can't say that I've noticed much difference. I did buy some "high performance" pads for a former BMW one time. I think they were more fade resistant, but they only lasted about 15k miles.

  11. #11
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    Quote Originally Posted by roger wiegand View Post
    I'm missing something, both the pad surface and rotor are wear surfaces, the pad at least losing several mm of thickness over a few 10,000's of miles. Does the spray soak through them? How does it affect braking performance? If it's some kind of lubricant that would seem to be a Bad Thing for braking.

    I've bought pads in the past that were suppose to be anti-squeal, and some that were supposed to not make as much dust. Can't say that I've noticed much difference. I did buy some "high performance" pads for a former BMW one time. I think they were more fade resistant, but they only lasted about 15k miles.
    The anti-squeal goes on the rear of the backing plate, between the caliper and the rear of the pad, the non-wear part. It prevents the metal on metal from squeaking.

  12. #12
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    It pays to use good grease to lubricate the caliper pins and the grooves in the calipers the pads set into. I bought a pint of stabila synthetic grease years ago for brakes and it makes a huge difference in brake performance. Anti squeel goop helps also.
    I had a heck of a time stopping the chatter on the buick lesabre when I first bought it. High quality pads and rotors with anti squeel finally got rid of the noise. GM pads and rotors were junk.

  13. #13
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    Quote Originally Posted by Todd Trebuna View Post
    The anti-squeal goes on the rear of the backing plate, between the caliper and the rear of the pad, the non-wear part. It prevents the metal on metal from squeaking.
    Aha! Knew something was off in my thinking. That wasn't a place I would have expected squeal to come from. I usually hear it when we get to the metal-on-metal part of the brake pad life.

  14. #14
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    The squeaking that is unrelated to worn brakes is caused by a high frequency oscillation when the brakes are just barely to low application. All pads fit in loosely for reasons that I don’t know.

  15. #15
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    I take my truck to the dealer and always I am satisfied. They know the idiosyncrasies of the vehicle.

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