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Thread: Towbar Incident Report

  1. #1
    4 Star General Ferroequinologist's Avatar
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    Default Towbar Incident Report

    I was delivering a deuce to Clintogf (Dawn) and one to TJP (new guy from AZ, I was dropping it off at his father in laws on the north side of ATL) yesterday.

    Angie drove my pickup behind me so I would have a way home after I dropped off both trucks.

    Anyway, she pulled ahead of me and headed for a rest stop, so I figured she had to pee. So I go to pull off as well, when I feel a jerk and a loud noise, and I look out the driver mirror. The deuce I was towing was still heading straight down the interstate, while I'm taking the ramp!!!!!!

    Luckly, I always put my good safety chains on, so she didn't wander too far, and started to follow me onto the ramp. It was kind of hair raising to say the least. I guess the pin broke due to fatigue. I use the snot out of that towbar. Also, after looking at the shakle mounts, the one that broke looked a little bit egg shaped.

    No pictures, Angie and I were busy trying to get it hooked back up (glad I bought a spare pin AND had it with me!!!!) It was funny watching Angie do the 'I've got to pee really bad' dance though. lol

    so remember, CHECK YOUR PINS AND ALWAYS PUT ON PROPERLY RATED SAFETY CHAINS!!

    Service message over.
    Last edited by doghead; 01-25-2011 at 12:03.
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    LLM/Member 785 Recovry4x4's Avatar
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    Was it an actual towbar pin or a shackle pin? Never seen a real towbar pin break before. Congrats on getting it stopped safely. Safety chains, HUGE NECESSITY!
    1986 M1008
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    4 Star General /Moderator doghead's Avatar
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    Adam, are you sure it broke? or could it have fallen out? Was the pin the correct one for a tow bar that has a 3/16" pin hole that uses a lynch pin? or was it a normal bumper shackle pin that uses a hairpin ?
    M817, M818, M819, M35A2 w/w, M35A2, M109, M105, M116A2, M101A2, Pioneer tool trailer, MEP-002, MEP-017A, 5ton winch shear pins, Oral-B toothbrush

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    No, it was a real deal towbar pin. I know it was properly pinned and secured, I replaced the lynch pin with new ones not that long ago.
    Last edited by Ferroequinologist; 01-24-2011 at 10:11. Reason: Eric even said what they were called in the previous post! DUH!

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    The egg shaped shackle mount probably broke the pin.
    Ray


    1986 m105
    1968 m146 RV conversion https://www.steelsoldiers.com/showth...-RV-Conversion
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    1963 m246a1 (mack)
    M373 Van trailer

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    4 Star General /Moderator doghead's Avatar
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    One last detail on the correct pin, it has the flat side on the head. It has to be installed so that the flat is against the tow bar flat, so it can not rotate in the hole.(causing the lynch pin to be damaged and it could fall out)
    M817, M818, M819, M35A2 w/w, M35A2, M109, M105, M116A2, M101A2, Pioneer tool trailer, MEP-002, MEP-017A, 5ton winch shear pins, Oral-B toothbrush

    Ah Beefco Industries Northeast marketing associate

    Don't judge a fish by its ability to climb a tree

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    4 Star General Ferroequinologist's Avatar
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    Yes, it was mounted with the flat part against the flat part on the adapter. The shackle hole was ever so slightly egged. When I first mounted it, there was no play in the towbar. I always wiggle everything after the pins are in. I don't know if it broke, and then on it's way out it egged it. The egging was tappered from the center of the hole out one side, it was not even across the mount. like if you put a stick in the ground, then pulled it to one side slightly then pulled it out.
    Last edited by Ferroequinologist; 01-24-2011 at 10:27.

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    Sergeant Major PropDr's Avatar
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    Wow.
    That makes me wonder about the mild steel pins I made for mine. Might be time to upgrade to 4340 chromoly.

    What size and grade chains did you have on it?
    Last edited by PropDr; 01-24-2011 at 11:03.
    M35a2- needs work
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    I have two 40klbs chains that CGarbee was selling for a long time. They have a hook on one end, and are connected together at the other by a master link.

    Gimpyrobb has new towbar pins- I PMed him and asked to buy 6, to replace all the ones in my towbar and have another spare new one.

    I wish I had a picture of how I hooked them up, I'll draw something crude and post it in a minute.

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    Ok, here is the crudely drawn chain set up. You come off the towing truck, and go under and inside the towbar. Then over it ot the outside. Then under the towed trucks bumper, then across the top in front, down the otherside of the frame, back out from under the bumper, over the towbar down the inside, then back out under it to the towing truck.

    Let me tell you, this setup works I know! you want some slack but you don't need much.
    Attached Images Attached Images

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