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Brakes stuck, peddle won't come back up. Cold temps.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by lwlevens, Feb 10, 2019.

Page 1 of 3
  1. Feb 10, 2019 #1
    lwlevens

    lwlevens Medium Load Member

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    Hey guys hope everyone is doing well. So went to move the truck today (tri axle dump) when I hit the brakes they stuck on, brake pedal wouldn't come back up,fine last week was really cold here lately though. Heard about pouring some alcohol in the air line but don't know where or what line,or I can wait till it warms up a little. What do you guys think. Thanks.
     
    lwlevens, Feb 10, 2019
    lwlevens, Feb 10, 2019
    #1
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  3. Feb 10, 2019 #2
    daf105paccar

    daf105paccar Road Train Member

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    How old is the brake pedal?
     
    daf105paccar, Feb 10, 2019
    daf105paccar, Feb 10, 2019
    #2
  4. Feb 10, 2019 #3
    lwlevens

    lwlevens Medium Load Member

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    Truck is a 99 don't know if was changed out before though.
     
    lwlevens, Feb 10, 2019
    lwlevens, Feb 10, 2019
    #3
  5. Feb 10, 2019 #4
    daf105paccar

    daf105paccar Road Train Member

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    Might want to replace it and solve your problem.
     
    daf105paccar, Feb 10, 2019
    daf105paccar, Feb 10, 2019
    #4
  7. Feb 10, 2019 #5
    booley

    booley Road Train Member

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    You said the brake pedal won't come back up? My '05 International had one of those big aluminum pedals and I learned to spray some WD40 on the pivot point to keep it from sticking. Road salt from my shoes would get in there causing corrosion
     
    booley, Feb 10, 2019
    booley, Feb 10, 2019
    #5
    RustyBolt and Heavyd Thank this.
  8. Feb 10, 2019 #6
    xsetra

    xsetra Road Train Member

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    What kind of truck.
    Can you pull the brake pedal back up?
    Could be just dirt, spray and clean under pedal
     
    xsetra, Feb 10, 2019
    xsetra, Feb 10, 2019
    #6
  9. Feb 10, 2019 #7
    A5¢

    A5¢ Medium Load Member

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    I am not familiar with your truck, but isn't mounted on the floor, or from above? And mentioned before, spray with WD-40 and try tomorrow it up.
     
    A5¢, Feb 10, 2019
    A5¢, Feb 10, 2019
    #7
  10. Feb 10, 2019 #8
    lwlevens

    lwlevens Medium Load Member

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    Mounted to the floor.It's a sterling dump truck.I pull the brake pedal up but it falls back down. I'll try spraying some WD on it tomorrow and see what happens. It worked last week,but it was also in the 50's. Maybe its frozen which airline do I pour alcohol into?
     
    Last edited: Feb 10, 2019
    lwlevens, Feb 10, 2019
    lwlevens, Feb 10, 2019
    #8
  11. Feb 10, 2019 #9
    DL550CAT

    DL550CAT Road Train Member

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    Sounds like the plunger is stuck. You’ll have to remove the pedal and pull the little rubber boot of and use channel locks to pull the plunger out and clean it reinstall coated in anti seize.
     
    DL550CAT, Feb 10, 2019
    DL550CAT, Feb 10, 2019
    #9
    IH Truck Guy Thanks this.
  12. Feb 10, 2019 #10
    lwlevens

    lwlevens Medium Load Member

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    Thanks now that you mentioned that the plunger is stuck in the down position, thanks I'll mess with it tomorrow.I'll need to build air pressure up first?
     
    lwlevens, Feb 10, 2019
    lwlevens, Feb 10, 2019
    #10
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