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Trailer dog-legging because the brakes

Discussion in 'Experienced Truckers' Advice' started by Jack carg, Apr 11, 2019.

  1. Apr 11, 2019 #1
    Jack carg

    Jack carg Bobtail Member

    20
    7
    Mar 1, 2019
    0
    Hi guys
    I have 2013 trailer and trailer always go to the right, I took it to the shop and replace the spring break valve because was leaking also done alignment , but I still have the same problem, I did an inspection of the brake system and found out the brake shoe touching the drum a little bit, then I adjusted the slack to make off, then I continue drive the trailer drive straight and my full mileages went up from 6.5 to 8 mpg but because I have auto slack adjuster , the problem come back again

    Now Im wonder do i have bad slack adjuster or brake chamber or what, please guys, I need help
     
    Jack carg, Apr 11, 2019
    Jack carg, Apr 11, 2019
    #1
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  3. Apr 12, 2019 #2
    RET423

    RET423 Medium Load Member

    432
    534
    Apr 6, 2017
    Kalifornia
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    A dragging brake won't cause the trailer to "dog leg" and if it was dragging enough to drop your mileage it would catch fire, you have another problem; possibly a broken suspension component or extremely worn bushings.
     
    RET423, Apr 12, 2019
    RET423, Apr 12, 2019
    #2
  4. Apr 12, 2019 #3
    x1Heavy

    x1Heavy Road Train Member

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    Mar 5, 2016
    White County, Arkansas
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    You also have another problem.

    If you are legally certified to adjust brakes on 18 wheelers and carry such a card allowing you to say at the scales to do it... then great. IF you do not possess this training, then only a certified mechanic can go under and touch those braking systems and whatever else as necessary to fix the dog leg.

    The trailer must not be towed or driven until the dogleg problem is fixed. There could be a thousand sources of that problem. A dab of brake show isnt going to fix it.
     
    x1Heavy, Apr 12, 2019
    x1Heavy, Apr 12, 2019
    #3
    Numb and Lepton1 Thank this.
  5. Apr 12, 2019 #4
    snowwy

    snowwy Road Train Member

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    Adjust all 4 brakes and see what happens. Loosening ONE is absurd.
     
    snowwy, Apr 12, 2019
    snowwy, Apr 12, 2019
    #4
  7. Apr 12, 2019 #5
    Brandt

    Brandt Road Train Member

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    Sep 17, 2012
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    Ever who did the trailer alignment did a bad job. It's not a brake related
     
    Brandt, Apr 12, 2019
    Brandt, Apr 12, 2019
    #5
  8. Apr 12, 2019 #6
    Ridgeline

    Ridgeline Road Train Member

    22,305
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    Dec 18, 2011
    Michigan
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    Yes you have a bad adjuster, get it replaced or better yet get ALL OF THEM replaced at the same time.
     
    Ridgeline, Apr 12, 2019
    Ridgeline, Apr 12, 2019
    #6
    JoeyJunk and x1Heavy Thank this.
  9. Apr 12, 2019 #7
    201

    201 Road Train Member

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    Apr 16, 2014
    high plains colorado
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    DOG TRACK, it's dog tracking,,,ugh,, besides, I have no idea what this person is trying to tell us.:dontknow:
     
    201, Apr 12, 2019
    201, Apr 12, 2019
    #7
    x1Heavy Thanks this.
  10. Apr 12, 2019 #8
    x1Heavy

    x1Heavy Road Train Member

    34,017
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    Mar 5, 2016
    White County, Arkansas
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    I don't either believe it or not. Im just being very cautious here.

    Ive had a mess of onery trailers in my time but those are usually idiot proof problems like outright bent rails and such.
     
    x1Heavy, Apr 12, 2019
    x1Heavy, Apr 12, 2019
    #8
    Lepton1 and 201 Thank this.
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