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Thread: unidentified towed object

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    Default unidentified towed object

    I got this UTO from the government. I think it was built for the military. It says it has a serial number, but I haven't found it. The paperwork I have for it says it cost $4474.
    I've has this trailer quite a few years and it has become rusty. I intend to sandblast it and repaint it.
    It was used to haul explosives. The sides and rear drop down. no wheel wells. It is heavy, made with a lot of diamond plate. It has the M37 style wheels and 900x16 tires. I don't think it was converted from an existing M series trailer. I'm posting these pictures hoping someone recognizes it.DSCN1778.jpgDSCN1775.jpgDSCN1777.jpgDSCN1776.jpg

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    dumpsterlandingfromorbit! gimpyrobb's Avatar
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    Looks like an aftermarket bed on an m116 trailer. Probably 6 bolt lugs?

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    The Marine Corps was and is notorious for producing shop-built trailers for specific needs, using anything from a few to a lot of standard military parts. They produce zero documentation or manuals for these!

    As Gimp said, looks like an M116 (basic chassis for the M101 and other trailers) with a custom bed.

    Can you get a better picture of the markings so I can add them to my USMC markings folder, please? I try to record as many markings as possible.

    Cheers
    Last edited by M813rc; 08-13-2019 at 12:24.
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    Did the marines put aftermarket beds on M116 trailers? I'm the 1st civilian owner. I thought M116 had 8 lug. This has 5 lug M37 wheels, big Budd nuts like the deuce. I have 5 pages of old paperwork and a explosive sign in that can on the hitch. Says Trailer, Cargo. Paperwork says it needs to be repainted. date of delivery 09075. Seems like it was moved between facility's on that date, (maybe) the paperwork form has a July'91 date. There is a inspection/workorder within the paperwork for painting... 8hrs/$500 cost of parts. Lists a 6 digit serial number for the trailer.

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    I will fold up the sides and get a picture of the markings, trailer, wheels, and framework and a closeup of the can markings.

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    Isn't the 5 bolt with big lug nuts like the M37 too? Is that wheel capable of dual-ing up or is it just a big offset?

    Chris, I see m116 with hummer 8 and the 5 lug like the m37 but no 6 lug like a deuce. We'll see when he puts the sides up.
    Last edited by tobyS; 08-13-2019 at 13:00.
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    Quote Originally Posted by 2deuce View Post
    Did the Marines put aftermarket beds on M116 trailers?......... Lists a 6 digit serial number for the trailer.
    Yes, they will use other beds, or build/modify their own to suit their needs. Some of these trailers are one-offs.
    To show how far they will go, I have a shop-built 35' step deck trailer built by one of the MCLBs!

    All Marine vehicles post-1940s have a 6-digit ID number with no letters. The first two numbers usually denote what type vehicle it is. They will be listed on the data plate (if there is one) as USMC123456, or just 123456. Vehicles transferred from other services will often have their original registration listed also.

    M116s started their life with 5-bolt M37 type hubs.
    There was a 5-to-6 lug adapter for use when the 6-lug M715s were in service, so the trailer could use the M715 spare (I have a couple of these).
    When the CUCVs came into service, the later M116s had 8-lug hubs to match the CUCV wheels/tires.
    The even later M116A3s had dropped outer axles to accommodate Humvee tires.

    Cheers

    Pic- Wheel adapters to mount 6-lug M715 wheels on 5-lug M116 trailers
    Attached Images Attached Images
    Last edited by M813rc; 08-13-2019 at 13:23. Reason: added picture
    Rory

    M813A1 (USMC)
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    Do you think it was a one off build or did the Marines make a number of these trailers? A lot of effort and detail went into making the trailer. My guess is it started out as a M101 trailer. Is that the designation with the 5 lug axle and before surge brakes? Before the A1 & A2?

    ThanksDSCN1791.jpgDSCN1792.jpgDSCN1793.jpgDSCN1794.jpgDSCN1795.jpgDSCN1796.jpgDSCN1797.jpgDSCN1798.jpg

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    The Serial # is stenciled on the outside of the trailer. Begins with 28.

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    Quote Originally Posted by 2deuce View Post
    Do you think it was a one off build or did the Marines make a number of these trailers? A lot of effort and detail went into making the trailer. My guess is it started out as a M101 trailer. Is that the designation with the 5 lug axle and before surge brakes? Before the A1 & A2?

    Unknown to me how many were made, I've never seen one like yours. It does seem a really nice unit.
    From the looks of your parking brake handles, it may be an A1, but someone with more knowledge would be needed to be sure.

    Just to clarify - M116 is the chassis that the M101 is made from. If you took the bed off an M101, it would then be an M116. Same for all marks (A1/A2/A3). Clear as mud?
    That is why some M101s have a data plate that reads M116. The chassis was used for other trailers types too, like generator, pioneer, HSTRU, etc.

    Main differences -
    M101/M116 is the version with 5-lug hubs, no surge brakes.
    M116A1/M101A1 had different parking brakes, no surge brake, 5-lug hubs.
    M116A2/M101A2 had 8-lug hubs, CUCV type rims/tires and surge brake.
    M116A3/M101A3 had 8-lug hubs, Humvee tires/rims, surge brake, dropped outer axles for more clearance, and beefed up suspension. Many M101A3 beds had a wider floor between the wheel wells. Some A3s had CUCV rims/tires swapped on.

    Light style is not a valid identifier, as many older trailers had newer style lights installed later in life. Same for rear stabilizer leg.

    Cheers
    Rory

    M813A1 (USMC)
    V100 (M706) Armoured Car
    XM704 Armoured Car
    S404 Unimog (Swiss)
    M185A3
    M109A3
    M1009 (x2)
    M931A2 (x2)
    M715 (x2.5)
    M725
    M35A2 w/w
    M1030B1 (USMC) (x2)
    M274A5 Mule (USMC)
    M1028A2
    Austin Champ
    M270A1
    M1082 (x2)
    M146
    M116A3 HSTRU
    M1102 CMT-F
    M128A2C
    M129A4
    ADC-TSS-5
    M348A2C AN/MSC-25
    and some more stuff...

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