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What causes screeching brakes ?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by SilverBulletBand, Dec 16, 2020.

Page 2 of 3
  1. Dec 17, 2020 #11
    SilverBulletBand

    SilverBulletBand Light Load Member

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    That would be my co-worker.
     
    SilverBulletBand, Dec 17, 2020
    SilverBulletBand, Dec 17, 2020
    #11
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  3. Dec 17, 2020 #12
    SilverBulletBand

    SilverBulletBand Light Load Member

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    Actually, yes. Every time it rains and I come in the next morning and head out. The brakes squeal like a stuck pig !
     
    SilverBulletBand, Dec 17, 2020
    SilverBulletBand, Dec 17, 2020
    #12
    Rideandrepair and magoo68 Thank this.
  4. Dec 17, 2020 #13
    supersnackbar

    supersnackbar Road Train Member

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    It could be rust jacking. The steel they make the drums out of will show surface rust in a very short time...especially in southern humidity. That minor surface rust gets between the drum and the shoes and allows some lack of contact. After a few brake applications, the rust is gone.

    I drive a 2021 Cascadia and my brakes have squealed since I was assigned to it 10,000 miles ago and it only has 28000 miles.
     
    supersnackbar, Dec 17, 2020
    supersnackbar, Dec 17, 2020
    #13
    Rideandrepair and SilverBulletBand Thank this.
  5. Dec 17, 2020 #14
    6wheeler

    6wheeler Road Train Member

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    You have a gift! God I wish I could get all of my brakes to squeal. It's a good thing. When you are coming to a stoplight it's like blowing the horn for that jerk that wants to cut your stopping distance by 1 more car length.
     
    6wheeler, Dec 17, 2020
    6wheeler, Dec 17, 2020
    #14
    black_dog106, Rideandrepair and SilverBulletBand Thank this.
  7. Dec 17, 2020 #15
    SilverBulletBand

    SilverBulletBand Light Load Member

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    Wetumpka, Alabama
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    I'm certain they're probably glazed.

    We haul underground utility piping (water/sewer/electrical conduit and related items. Our trucks are frequently maxed out (around 30,000 lbs) with (4) layers of heavy ductile iron pipe. We service all of Middle Tennessee where it is very hilly. So the brakes on our trucks take a beating. For sure !
     

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    SilverBulletBand, Dec 17, 2020
    SilverBulletBand, Dec 17, 2020
    #15
    Rideandrepair and 201 Thank this.
  8. Dec 17, 2020 #16
    SilverBulletBand

    SilverBulletBand Light Load Member

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    I thought that as well. The think that concerns me is the amount of time (brake applications) that it takes until they FINALLY stop squealing.

    I would think if it was "just" surface rust the squealing would go away in few applications. It does not. It takes many applications until the squealing stops for the day. Almost like the brakes need heated up to make it stop.
     
    SilverBulletBand, Dec 17, 2020
    SilverBulletBand, Dec 17, 2020
    #16
    Rideandrepair Thanks this.
  9. Dec 17, 2020 #17
    SilverBulletBand

    SilverBulletBand Light Load Member

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    LMAO !!! Actually, it is SO loud that I do see how long I can get them to squeal ! Lol ! When coming to red lights, you can modulate the pedal to KEEP them squealing or just push a little more to make them stop. You outta see the looks I get when it's squeal like a freight train coming to a stop at red lights! Cheap entertainment ! Lol ! I gotta get it on video. :>)
     
    SilverBulletBand, Dec 17, 2020
    SilverBulletBand, Dec 17, 2020
    #17
    Rideandrepair Thanks this.
  10. Dec 17, 2020 #18
    Bernard D

    Bernard D Heavy Haul Member

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    Replace air cans Shoes and drums . Inspect S cams
     
    Bernard D, Dec 17, 2020
    Bernard D, Dec 17, 2020
    #18
    Rideandrepair Thanks this.
  11. Dec 17, 2020 #19
    snowwy

    snowwy Road Train Member

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    Do you replace your pads, rotors, and calipers when your car squeals?
     
    snowwy, Dec 17, 2020
    snowwy, Dec 17, 2020
    #19
    Rideandrepair Thanks this.
  12. Dec 17, 2020 #20
    Bernard D

    Bernard D Heavy Haul Member

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    Yup sure do ,I replace my disc s and the squeek go's away..But we are talking trucks man are we not
    Whole different type of applications.
     
    Bernard D, Dec 17, 2020
    Bernard D, Dec 17, 2020
    #20
    Rideandrepair Thanks this.
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