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Braking Issues

Discussion in 'Trucks [ Eighteen Wheelers ]' started by MX127, Dec 24, 2019.

Page 5 of 8
  1. Dec 25, 2019 #41
    MX127

    MX127 Bobtail Member

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    Okay, I will. Does the pedal valve seem to stay loaded after releasing foot pressure, then going for another stroke? That's how it feels for me, as if it holds that lockout point while attempting to relieve psi off the drums and reapplying the brakes, "brake release lag"?
     
    MX127, Dec 25, 2019
    MX127, Dec 25, 2019
    #41
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  3. Dec 25, 2019 #42
    woolybully35us

    woolybully35us Medium Load Member

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    when mine froze up it was like I had no breaks then all the sudden I had to much break
     
    woolybully35us, Dec 25, 2019
    woolybully35us, Dec 25, 2019
    #42
    MX127 Thanks this.
  4. Dec 25, 2019 #43
    Michael 247

    Michael 247 Heavy Load Member

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    Dublin Va
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    How can you know that a spring is broken inside a brake chamber
     
    Michael 247, Dec 25, 2019
    Michael 247, Dec 25, 2019
    #43
  5. Dec 25, 2019 #44
    MX127

    MX127 Bobtail Member

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    That's a good question, unfortunately, I didn't have a opportunity to ask the technician that made the report.

    However, I believe they can be disassembled or possibly a scope can be inserted through the center of the housing, but honestly I don't know how he discovered it.
     
    MX127, Dec 25, 2019
    MX127, Dec 25, 2019
    #44
  7. Dec 25, 2019 #45
    SmallPackage

    SmallPackage Road Train Member

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    Marion Texas
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    Lotta times you’ll hear it “THUD” loud or make a different sound than the others when you set the brakes.
     
    SmallPackage, Dec 25, 2019
    SmallPackage, Dec 25, 2019
    #45
    MX127 Thanks this.
  8. Dec 25, 2019 #46
    snowwy

    snowwy Road Train Member

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    I'm talking about the brake spring. Not the chamber spring.

    Worn out brakes and drums cause the shoes to spread too far and the return spring breaks.
     
    snowwy, Dec 25, 2019
    snowwy, Dec 25, 2019
    #46
    MX127 and SmallPackage Thank this.
  9. Dec 25, 2019 #47
    baha

    baha Road Train Member

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    Also CK the thickness of brake shoes on truck now,I bought a truck with the wrong shoes put on and they were 1/2 as thick as the right ones, it was caming over after 1 mo. of use?
     
    baha, Dec 25, 2019
    baha, Dec 25, 2019
    #47
    SmallPackage and MX127 Thank this.
  10. Dec 25, 2019 #48
    MX127

    MX127 Bobtail Member

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    Copy
     
    MX127, Dec 25, 2019
    MX127, Dec 25, 2019
    #48
  11. Dec 25, 2019 #49
    SmallPackage

    SmallPackage Road Train Member

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    To add to this. If the spring brake chamber push rod cleavis is unpinned from the slack adj. You will be able to sometimes push in the rod and wiggle around by hand cause the spring no longer has a hold on it.
     
    SmallPackage, Dec 25, 2019
    SmallPackage, Dec 25, 2019
    #49
    MX127 Thanks this.
  12. Dec 26, 2019 #50
    MX127

    MX127 Bobtail Member

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    Dec 24, 2019
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    Yes, drums replaced, also one man stated eariler back in the conversation, with these older trucks, its possible the shop installed the wrong size drums.

    Uerstanding the information you provided, over sized drums will likely give the same results as your term "cam'd over", if I understood correctly.

    Thank you for replying.
     
    MX127, Dec 26, 2019
    MX127, Dec 26, 2019
    #50
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