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Thread: Patracy's "SEMTT"

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    Administrator patracy's Avatar
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    Default Patracy's "SEMTT"

    Well I pulled the trigger on a cab. Now to get it down here from NY. Like Soni's FEMTT, this one will end up on a 6x6 chassis. But it'll be a M931 or M923, and just a lowly NHC 250 or 8.3. Anyone heading south from NY?
    M114
    1992 M1038
    1969 M35A2 wo/w, hoist in bed, heater, Ooga horn, Recentered HEMTTs and 395's, "Candy Smasher"
    1968 M543A2 Wrecker - You know, for heavy lifting...
    1984 M931 - SEMTT project
    198? M270 trailer TBD...
    1985 M1008 - SMOKEY 8" lift, 37" humvee 24 bolt wheels/tires, turbocharged.
    And a few M105 and M101 and other trailers

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    3 Star General M920's Avatar
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    Congratulations on your purchase! I'm sure glad to see, that you went with one of the new Mk48 cabs! It makes the project so much more exciting, to end up with a truck that feels like a brand new vehicle, that just rolled out the factory at Oshkosh, when you go for your first ride in it!

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    patracy (03-02-2013)

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    4 Star General Vintage iron's Avatar
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    should be cool! have them grab my knuckle-boom too.
    USMC
    M936 Wrecker with a Turbo 350 Big Cam Cummins
    M916A1 shop truck running 1600R21 Goodyear At-2

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    Administrator patracy's Avatar
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    Yeah I kept going back and forth on it. But you're right, if I start with an old cab, I'm going to end up with a "old" truck. I believe I've located a gearbox to adapt the steering as well. I was considering flipping the steering box and making custom linkage. But you're approach is much simpler after I studied the work that would have been involved.
    M114
    1992 M1038
    1969 M35A2 wo/w, hoist in bed, heater, Ooga horn, Recentered HEMTTs and 395's, "Candy Smasher"
    1968 M543A2 Wrecker - You know, for heavy lifting...
    1984 M931 - SEMTT project
    198? M270 trailer TBD...
    1985 M1008 - SMOKEY 8" lift, 37" humvee 24 bolt wheels/tires, turbocharged.
    And a few M105 and M101 and other trailers

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    4 Star General Vintage iron's Avatar
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    use a steering box out of a cab over. cheap and easy to find.
    USMC
    M936 Wrecker with a Turbo 350 Big Cam Cummins
    M916A1 shop truck running 1600R21 Goodyear At-2

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    3 Star General M920's Avatar
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    I thought about flipping the steering box on mine, but as you pointed out there are a lot of modifications involved and by keeping all the stock setup, spares will be readily available if needed!
    I can supply the Hub City gear box model and part number if you need it. I went with Hub City, because the other two gear boxes, for the steering in the Mk48 cab, are made by them and I figured Oshkosh did their home work on the quality of that product. (Of course they could have just been the lowest bidder to....lol)

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    General chevyCUCV's Avatar
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    I am going to ga at end of march.

    Think it will fit in a m1008 truck bed?
    1986 Chevy M1008

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    3 Star General M920's Avatar
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    Quote Originally Posted by Vintage iron View Post
    use a steering box out of a cab over. cheap and easy to find.
    Oh, I forgot to mention the most important part: you can't just flip the existing box! It will result in the wrong rotation and the vehicle will go left when you turn the wheel to the right!!!! You have to have a box of a HEMTT or LVS for this to work.

    So I don't think the cab over box will work, since it does not have a reversed rotation input....

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    4 Star General Scarecrow1's Avatar
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    Good find I hope the recovery goes well. I envy those of you with the foresight to take on a project like that. I complain when I have to take the time to trace down a problem like my fuel gauge not working. But I like to see the progress when you guys do the impossible ........
    ((( Mike)))

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    3 Star General M920's Avatar
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    Quote Originally Posted by M920 View Post
    Oh, I forgot to mention the most important part: you can't just flip the existing box! It will result in the wrong rotation and the vehicle will go left when you turn the wheel to the right!!!! You have to have a box of a HEMTT or LVS for this to work.

    So I don't think the cab over box will work, since it does not have a reversed rotation input....
    Ok....I guess I'm still waking up....My apologies, my statement above is wrong! I just remembered that YOU COULD FLIP THE BOX as far as the rotation goes. The problem is that the large part of the steering boxes body will interfere with the pitman arm!

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