peterbilt trailer valve issues

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Allnotch, Aug 22, 2020.

  1. Goodysnap

    Goodysnap Road Train Member

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    Call Bendix. They may have some other checks for you. Sometimes they turn me on to something I didnt see or figure to check.

    1800AIRBRAKE
     
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  3. Allnotch

    Allnotch Bobtail Member

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    Aug 22, 2020
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    Thank you for the number I would never thought to call them. They were very helpful and you will never guess what was wrong. The dash valves share the same exhaust line and for some reason the tractor brakes will work but not the trailer if that line is clogged, well the line was clogged at the firewall. I removed the the line from the inside valve and it worked fine. Thanks for your help and maybe this help someone else.
     
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