Losing air break pressure while ilding

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Goodguy88, May 30, 2017.

  1. Goodguy88

    Goodguy88 Medium Load Member

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    May 8, 2017
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    Will try tonight. Thanks
     
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  3. Bluefin60

    Bluefin60 Bobtail Member

    4
    3
    May 30, 2017
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    Check the exhaust ports of the foot valve and relay valves near the axles.
     
  4. ASE tech/mechanic

    ASE tech/mechanic Bobtail Member

    12
    3
    May 8, 2017
    0
    Have you looked at the brake chamber's?build air pressure up,set brand's and do a walk around after you shut the truck off of course.if no leak,build pressure back up,open the door's,shut the truck off,maybe have another driver walk around while you hold the brake's.hopefully it's just a diaphram,even then full chamber or half is still pretty cheap.
     
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