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Thread: Lighter springs on a 939?

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    4 Star General Buffalobwana's Avatar
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    Default Lighter springs on a 939?

    Anyone try it up front? The front suspension on these trucks is too much for what *most* of us use them for. The 2.5 or 5 ton ton LMTV springs seem a bit small, but I see there are MRAP springs available too.

    Im just looking for an alternative to the giant steel timbers on the front that are currently compressing my spine. Rear springs need help as well, while
    maintaining ride height.

    When I drove down to help with the Harvey rescue, I had the bed full of bottled water. Was the nicest ride I have ever had in that truck. (It was a lot of water!)

    Even with 5 tons of feed in the bed, its still a bit rough. There has to be a reasonable middle ground somewhere.

    Im working on turning one of my trucks into an expedition vehicle
    with the S-280 on the back. I can tolerate the ride with the air ride seats, but this project will go a lot smoother if my wife doesnít hate the way the truck rides.
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    4 Star General Buffalobwana's Avatar
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    What about LMTV springs with an airbag?
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    what makes the lmtv springs work is the length. the 5 ton springs are stacked up short and tight removing a few of the shorter springs in the pack would improve your ride, but to maintain ride hight you would have to add spacers or lengthon the hangers.

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    Quote Originally Posted by snowtrac nome View Post
    what makes the lmtv springs work is the length. the 5 ton springs are stacked up short and tight removing a few of the shorter springs in the pack would improve your ride, but to maintain ride hight you would have to add spacers or lengthon the hangers.
    Yeah, I had wondered about that. I thought removing every other one, maybe 3 total, then cutting them down to fit toward the bottom of the stack, to serve as spacers might work.

    Like to see if anyone else else has tried it before I have them cut.
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    Do you have a stock drivers seat? Maybe upgrading to an air ride seat would be the easiest solution.

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    Quote Originally Posted by bachman502 View Post
    Do you have a stock drivers seat? Maybe upgrading to an air ride seat would be the easiest solution.
    I have dual air ride seats. My back wouldn’t tolerate the stock seat!
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    I
    Quote Originally Posted by bachman502 View Post
    Do you have a stock drivers seat? Maybe upgrading to an air ride seat would be the easiest solution.
    You are right, it does help a lot.
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    While we are talking about it, has anyone tried putting air bags/shocks on the back of the cab in place of the cab mounts? Basically, mimicking the air ride cabs in big rigs.

    I realize all this may sound a bit excessive for a typical 5-ton, and it is, to a certain extent. But, I’m building this into an expedition vehicle, and long days on the road, and off road, need to be more comfortable than a truck I would only drive 100-200 miles a month.
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    Not enough room for the cab air bag unless you refab a crossmember. Air bags in the front is possible. Parabolic springs are also a good choice for the front
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    if you want flex get rid of the short springs leave the longer ones in, generally spacers in the front aren't recommended I have seen some commercial rigs set up that way from the factory.

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