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  1. #21
    Left The Driveway
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    help me out here guys...I am telling you we felt nothing at all when this pin pulled. What questions should I be asking the mechanic or GD? The mechanic said the brakes were white on the inside from excessive heat...and there were charred wires that ran alongside the melted hydraulic line.

  2. #22
    King Pin
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    If the wires are running parallel to the hydraulic lines and they overheated due to excessive current, that would explain the damage to the lines. I'm making an assumption that the brakes were overheated from friction. If that is the case, I'm at a loss as to why you wouldn't have felt them activate. I'm hoping some of the mechanical types on here will weigh in.

    Jim

  3. #23
    Left The Driveway
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    Thanks Jim. I think I stated this before...but our TV is a 2017 Silverado 1 ton diesel...and our trailer is a 2017 Solitude 310GK.

  4. #24
    Site Sponsor Cate&Rob's Avatar
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    There is a big difference between a full brake apply at crawling speeding and at highway speed. Most who have experimented with this have found that there is a road speed above which they cannot lock the electric drum trailer brakes. The heavier the trailer, the lower this speed will be because of the inertia of the moving trailer.

    Drum brakes overheat and lose friction between the shoes and the drum very quickly. So, if you didn't feel the initial apply because of road speed and inertia of the trailer, you would not feel the continually lessening braking ability as the shoes and drums heat. At some point the wires to the electro-magnets would probably melt and short out. Because there is no fuse in the emergency brake apply circuit this would cause the brake apply wires to overheat.

    The above is just my theory . . . but fits with what the OP describes and what I have heard from others and observed in their damaged parts. Melting the hydraulic lines is something that I have not heard of before.

    Rob
    Cate & Rob
    2015 Reflection 303RLS

  5. #25
    Seasoned Camper Clanker24's Avatar
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    So I am confused. Are we dealing with drum or hydraulic discs?
    John & Joanne
    2018 Solitude 374TH
    2018 GMC 3500HD Duramax CC DRW
    2001 Harley Ultra Classic

  6. #26
    Site Sponsor Cate&Rob's Avatar
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    Quote Originally Posted by Clanker24 View Post
    So I am confused. Are we dealing with drum or hydraulic discs?
    The melted hydraulic lines are for the slides . . . see post #1.

    Rob
    Cate & Rob
    2015 Reflection 303RLS

  7. #27
    Rolling Along carnolddsm's Avatar
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    If the model in question is like the units I remember the hydraulic lines for the slide are inside the frame rails, nowhere near the brake drums.

    Just a guess on my part the hydraulic lines melted from heat in the brake wire running from the pin box to the first axle.

    Quote Originally Posted by BabyBober View Post
    While I would agree to that statement I also question if the OP didn't "feel anything" how the brakes and the hydrolic lines could have "melted"... Just saying ya can't have it both ways...
    Colan and Marilyn Arnold
    Des Moines, IA - kind of, on the road full time.
    Currently in Durango, Colorado
    Momentum 350M originally, now a 397TH

  8. #28
    Site Sponsor nwminnesota's Avatar
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    Brake cable solution.
    http://www.trailerlife.com/tech/10-m...cable-catcher/
    Not sure if it'll work or not but sounds like it would.

    Also where are you guys hooking your brake cable for those of you that have an pullrite autoslider?
    Dealer told be to hang it on the release bar handle.
    2018 3500HD Chevy Duramax CC SB
    2014 2500HD Chevy Duramax CC SB(sold)
    Pullrite 2700 Autoslider
    Timbrens
    2018 28bh 5th wheel
    X23B Jayco (sold)
    1991 Pop-up (sold)
    Tent (might bring along so I know what camping is like again)

  9. #29
    Seasoned Camper Greene728's Avatar
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    Quote Originally Posted by Cate&Rob View Post
    There is a big difference between a full brake apply at crawling speeding and at highway speed. Most who have experimented with this have found that there is a road speed above which they cannot lock the electric drum trailer brakes. The heavier the trailer, the lower this speed will be because of the inertia of the moving trailer.

    Drum brakes overheat and lose friction between the shoes and the drum very quickly. So, if you didn't feel the initial apply because of road speed and inertia of the trailer, you would not feel the continually lessening braking ability as the shoes and drums heat. At some point the wires to the electro-magnets would probably melt and short out. Because there is no fuse in the emergency brake apply circuit this would cause the brake apply wires to overheat.

    The above is just my theory . . . but fits with what the OP describes and what I have heard from others and observed in their damaged parts. Melting the hydraulic lines is something that I have not heard of before.

    Rob
    I think you are on to something here Rob. If the speeds were such that the brakes didn't lock up due to the foreword momentum, it would be a very short time before they failed all together due to being completely toast. Interesting for sure.
    2015 Ram SRW 3500 4x4 Cummins
    B&W Patriot 16K
    2011 Crossroads Cruiser 29BHX (Traded)
    2017 Grand Design Reflection 303RLS

    Scott & Jennifer
    Newnan GA

  10. #30
    Seasoned Camper
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    I've seen this happen on a 35ft work trailer behind a dump truck. never locked up just destroyed the inside of the drums. it was loaded with steel I-beams
    2018 GD 2800BH
    2005 Tundra, 2010 sequoia
    Wife & 2 kids

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