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Thread: M101A2 Trailer Questions

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    Corporal
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    Default M101A2 Trailer Questions

    Hello All.... I recently purchased an M101A2 trailer. I have been actively working on it, trying to remove the rust, repair/replace the tail lights, etc. While working on rust abatement, I noticed that the chassis is an M116 while the trailer is an M101A2. I have read the TM (found on this site) and have found that all M101 Series trailers utilize the M116 chassis. I also read that all M101A2 and A3 trailers have large U-Bolts in the sides of the trailer, front and rear. These U-Bolts provide lift points for new-style cargo body and are located at each of four lower corners of cargo body. My M101A2 does not have these U-Bolts. Is this disparity common? Additionally, my trailer has a rear stabilizer leg which prevents the trailer from tipping over when loading and unloading cargo. Unfortunately, the stabilizer strut is frozen in place and cannot be extended by threading the lower portion into or out of the strut tube. Basically, it will not unscrew. Does anyone have ideas on how to free the threaded portion of this strut?

  2. #2
    General
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    Lot's of penetrating oil, and work it back forth a little bit at a time while reapplying oil. I've freed up frozen brake levers that way before. Might work on the landing leg too. You might also try kroil...

    Sent from my SM-G920V using Tapatalk

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    4 Star General M543A2's Avatar
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    Loosen-it sprays/compounds will work if you are lucky is our experience with most frozen threaded items like the landing gear leg you describe. If that does not work we have to use the acetylene torch to heat the part, in this case the external tube, to virtually red hot heat. This causes the externally threaded part of the leg to expand more rapidly than the threaded screw inside breaking the rust hold on the two parts. You can then, while very hot, try to move the parts. If you get movement, keep moving it to the point where there is a high resistance and stop. Take it back the other way until a high resistance to turning happens and stop. While the parts cool to ambient temperature hit it with a chemical loosening compound and/or lubricating oil and try turning it as described above. When the part temperature cools to where the compound or oil you are applying does not immediately cook off in smoke, keep applying it because it is now starting to penetrate the part, drawn in by the heat, and do its lubricating job and will wash out the rust as you turn it. The assembly should turn more revolutions every time you screw it in and out and rust should be seen coming out. Sometimes tapping on the external tube with a hammer while hot will help but be careful not to dent it or bend it.
    The acetylene torch method will not cause the part to be softer or harder metal constituency-wise if not force cooled with water. Never quickly water cool parts that have been heated, Let them air cool to ambient temperature on their own and you will have less chance of damaging any heat treat in the parts.
    I have to recognize maybe most people do not have access to an acetylene torch so hopefully the chemical process will help eventually. We just have the best results with the torch method when parts are really rusted, if it does not work it is basically the last resort and now you are at the point of throwing away the assembly.
    Warsaw, Indiana
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    Super Moderator Tinstar's Avatar
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    The M101A2ís do not have the lifting points on the side of the bed.
    They used the tie down shackles for lifting onto ships, etc.

    The M101A3ís do have them and extra support around the points.
    A3 is also wider between fender wells, thicker framing, step down axle and HMMWV wheels, etc.

    The M116A2 chassis, with the cargo bed attached, is the M101A2 or A3, depending on modifications.
    That chassis was also used to make generator, welding, wire laying, etc trailers.

    The M101A2/3ís are the best Military trailer ever made, in my opinion.
    Your lucky to have one as their very sought after.

    Croft Trailer has the factory parts for the surge brake actuator.
    HydroAct is the manufacturer
    Dexter for the axle, hubs
    Redline for the brakes.
    Timken snd Federal Mogul for the bearings.
    Surge brakes are awesome when properly maintained.
    The brake levers are impossible to find

    If the recommendations about the landing leg donít work, they are available on eBay.
    Brand new and inexpensive.

    Just had my green M101A2 out yesterday.
    My tan one is the workhorse. Use it a lot.
    Wish I had several more.


    EDIT:
    Just saw this M101A1 with lifting(?) points on the bed sides, on an auction site.
    EDIT2:
    Definitely not factory installed. (turns out they are)

    75977F97-CD8D-47AF-A43D-F6E4818C1CB8.jpg
    Last edited by Tinstar; 09-24-2019 at 11:53.
    1987 M1008A1 (2)
    1986 M1009
    1995 NF2D FloodLight/Kohler-Kubota Generator Set
    1992 M101A2 trailer (2)
    1987 M149A2 Water Buffalo (M149A1 Chassis)
    S-280 Shelter

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    4 Star General juanprado's Avatar
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    The m101 trailer family is like a salad bowl. Never quite sure what is in there...

    Many varities and specialized trailers in this series.

    There was a running change in the last of the m101a2's with a newer style bed with additional ribs and the lifting points. Still retained the a2 bed size and fenders. Some of these beds were retro fitted on a1's.

    All the a3's got the new bed with ribs, lifting points, and the wider fenders.

    If your leg does not free up, just make sure to look at bracket and length closely when searching ebay as m105 legs are similiar and sometimes mis identified
    Attached Images Attached Images
    1984 M923 "Maj. Zippidy" who now is equipped like a M925A1
    1991 M998 HMMWV

    1990 Kasel M101A2
    1968 Case Master M101A1 with fuel tank and gen set up
    1991 Eastern Technologies M105A2
    60's ? m116a1? radar trailer flatbed
    xm1073 flat bed 7 1/2 ton


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    Corporal
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    Wow.... You guys are GREAT! Your ideas and knowledge seem to be endless. I have the stabilizer leg upside down in my vice and have been applying penetrating fluid to the movable portion of the leg but haven't had any success in getting it to move. Does anyone by chance have an IPL for this part? Is the outer tube (mounted to trailer) a solid pipe with a threaded bore? Is the grease zerk in the top of the leg threaded or pressed into the leg? If removable, perhaps I find a way to pull out the grease and inject penetrating oil. Thank you all for your great ideas...

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    4 Star General Guyfang's Avatar
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    The zirk is removable.
    Time. You need to keep the leg wet with some kind of penetrating fluid, for several days. If its not loose, like M543A2 said, heat. This leg is a PITA.

    What is an IPL?

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    IPL is Illustrated Parts List, basically a breakdown of all parts, internal and external. You stated the leg is PITA. What is PITA Thank you for your reply...

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    4 Star General juanprado's Avatar
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    Quote Originally Posted by rmesgt View Post
    IPL is Illustrated Parts List, basically a breakdown of all parts, internal and external. You stated the leg is PITA. What is PITA Thank you for your reply...
    got to love those acronyms

    Pain in the Azz...
    1984 M923 "Maj. Zippidy" who now is equipped like a M925A1
    1991 M998 HMMWV

    1990 Kasel M101A2
    1968 Case Master M101A1 with fuel tank and gen set up
    1991 Eastern Technologies M105A2
    60's ? m116a1? radar trailer flatbed
    xm1073 flat bed 7 1/2 ton


    "Success demands a high level of logistical and organizational competence."
    - General George S. Patton, Jr

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    Colonel Terracoma's Avatar
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    Quote Originally Posted by Tinstar View Post
    EDIT:
    Just saw this M101A1 with lifting(?) points on the bed sides, on an auction site.
    Definitely not factory installed.

    75977F97-CD8D-47AF-A43D-F6E4818C1CB8.jpg
    I've seen quite a few trailers with these M105-style lifting points, and they've all been M101A1 trailers with the 5-lug hubs... They might all have been the cargo trailers setup for generators, with the underslung fuel tank and curbside filler neck.
    --- Gary

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