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Thread: Deuce pintle hitch shaft nut. Tight or loose?

  1. #1
    Corporal JSBIRD69's Avatar
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    Question Deuce pintle hitch shaft nut. Tight or loose?

    I added a receiver hitch to my M35A2 a few years back, and when reassembling the pintle hitch, I tightened the main nut on the pintle shaft very tight. So tight it will not rotate under any circumstances.

    Then recently, a neighbor dropped off his M35A3 for some light repairs. While doing a walk around of his truck, I noticed that his pintle hitch would rotate 360*, with little effort from this old man.

    I first thought perhaps a loose hitch would allow for more travel without binding, when running cross country, but upon further reflection realized that a tight hitch wouldn't allow a trailer, such as my M105A3, to tip over sideways under any condition.

    Anyone have input one way or the other? I'd like to return the A3 with as many things done properly, as possible.

    TIA

    Jay

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    4 Star General porkysplace's Avatar
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    They are designed to turn the A3 pintle is working correctly . Probably not good having them to tight to turn .

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    2 Star General fasttruck's Avatar
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    The pintle swivels and the lunette on the trailer doesn't to allow the truck and trailer to ocellate if on uneven ground they tip in opposite directions. If the pintle is rigid you will bend or break something when the trailer twists in a different direction than the truck. M 52s and 818s also allow for this as they have a double trunnion fifth wheel that will allow this oscillation if the trunnion wedges are adjusted accordingly.

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    Just tighten the nut on the pintle hook to where it does not have a lot of end play but is free to turn 360 degrees. They are to turn which is why there is a grease fitting to lubricate the pintle hook shaft as it turns on the top of the bolted on rear frame mount for the pintle hook shaft. A tight pintle will cause big problems.
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    4 Star General rustystud's Avatar
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    Quote Originally Posted by M543A2 View Post
    Just tighten the nut on the pintle hook to where it does not have a lot of end play but is free to turn 360 degrees. They are to turn which is why there is a grease fitting to lubricate the pintle hook shaft as it turns on the top of the bolted on rear frame mount for the pintle hook shaft. A tight pintle will cause big problems.
    Many of the newer Deuces do not have grease fittings on the Pintle Hitch. I added one to mine several years ago. I posted the project.

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    Corporal JSBIRD69's Avatar
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    Many thanks to all who shared their knowledge and experience regarding Deuce pintle hitches.

    Jay
    1970 M35A2 "Fred"

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    4 Star General DavidWymore's Avatar
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    I imagine few will take their deuce and trailer on terrain rough enough to need the pintle to swivel...but yeah.

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    It also is beneficial to swivel in the event of an accident and the trailer turns over and the truck won't go with it. It also helps with shaft wear. Itd a tapered shaft with no bearing. They do wear out
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