Bending the 2A frame

Discussion in 'Flat Fender Tech' started by Gump, Jul 5, 2005.

  1. Jul 5, 2005
    Gump

    Gump Old Timer

    Bethel, CT
    Joined:
    Jun 1, 2004
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    236
    Is there an easy way to bend the rear corner back up? After I pulled the tub this weekend, I noticed the left rear is bent down about a 1/2". I could stick a shim under the tub corner but then the bumper is sloping down at that corner.
     
  2. Jul 5, 2005
    timgr

    timgr Jeepin' Nerd Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    18,205
    Body shops use portable hydraulics (Portapower) and pockets set into the concrete shop floor for this. The pockets have bars across them so that the body man can loop chains through to hold the frame. Then they use the hydraulics to push or pull the high/low areas. Pretty hard to do without something to anchor the frame to.

    Also, it's hard to be sure that the frame is bent if it's sitting on the axles. I'd expect the weight of the springs and axles (especially with an MB or 2A frame) to be able to bend the frame somewhat. Thus you've got a mix of spring heights, frame straightness, and whatever weight is on the chassis to deal with - hard to be sure about the bend unless the chassis is stripped bare.
     
  3. Jul 5, 2005
    Gump

    Gump Old Timer

    Bethel, CT
    Joined:
    Jun 1, 2004
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    It's bare now and last summer I put new good quality springs from Walck's in when I thought it was the springs. It came back slightly putting in the new springs. There is a horizontal weld bead up the inside of the frame behind the rear axle. Looks like it was field welded. This may be part of it.

    I was thinking of pulling my wife's GC up on the right side and jacking up the left :D

    Thanks,
     
  4. Jul 5, 2005
    timgr

    timgr Jeepin' Nerd Sponsor

    Medford Mass USA
    Joined:
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    If it's a bare frame, you should be able to pay someone to straighten it. Any collision shop will have the above setup.
     
  5. Jul 5, 2005
    wingtime

    wingtime Member

    Clearwater FL
    Joined:
    Mar 20, 2003
    Messages:
    143
    you can do this your self. I straightened a CJ-7 frame that was bent by the sand blasting company. (they picked it from the end with a forklift).

    I drilled and placed drop anchors in my shop floor. I screwed CAST eyebolts into the anchors to attach the chains to. Don't use lead anchors with the eyebolts that are just simply bent around they will not hold. Get the steel drop anchors made by Hilti or Red head. They require a drive pin tool to set the anchor in the concrete.

    With the frame on jack stands and securely anchored down to the floor I simply bent the low side up with a floor jack or a bottle jack. Of course the low corner won't be chained down to the floor only the three oposite corners. Use a couple of levels to make sure you have it straight with no twist, and measure the frame diagonally to make sure it is square. The proper measurements are found in most Jeep service manuals.
     
  6. Jul 6, 2005
    Gump

    Gump Old Timer

    Bethel, CT
    Joined:
    Jun 1, 2004
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    236
    Thanks for the replies. This gave me some ideas since I can't really drive or tow it anywhere.
     

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