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Leaf spring and axle twist

Discussion in 'Suspension' started by louied817, Apr 17, 2016.

  1. Apr 17, 2016 at 10:26 AM
    #1
    louied817

    louied817 [OP] Well-Known Member

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    So I have new springs which led to new front hangers which we welded to frame. Now it appears my axle is twisted to rear. See photo. Up acceleration the axle wraps a bit.

    Any ideas of what to do to straighten the axle. Loosen u bolts, then what.

    Shackle on drivers side is about maxed out. See photo. Not much we could do. Just working with what we have.

    All ideas are appreciated. Thanks20160417_131108.jpg 20160417_131127.jpg 20160417_131118.jpg
     
  2. Apr 17, 2016 at 12:09 PM
    #2
    louied817

    louied817 [OP] Well-Known Member

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    So more I read the more I'm thinking my wrap is normal? Don't really notice any issues like wheel hop etc.

    A bit of twist upon acceleration. Not 4 wheeling with this BTW. Only question I have is about axle and does it cock a little to the rear when sitting? Is that pitch normal?
     
  3. Apr 18, 2016 at 1:00 PM
    #3
    4WD

    4WD cRaZy oLdmAn

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    [​IMG]

    Almost maxed out ??....

    I'm trying to figure this out, you got longer springs so thats reason for relocating hangers ?? & No, loosening U bolts isn't going to straighten out axle, the alignment was done when you relocated hangers which sounds like you didn't have them right when welded to frame...How are you with a grinder...??
     
    jberry813 likes this.
  4. Apr 18, 2016 at 5:39 PM
    #4
    louied817

    louied817 [OP] Well-Known Member

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    So I had front brackets welded to frame. Rear hangar brackets are original that are part of frame.

    Actually rides ok. Mainly curious about pitch on differential at this point? Also is axle supposed to wrap a but under torque?
     
  5. Apr 18, 2016 at 5:43 PM
    #5
    louied817

    louied817 [OP] Well-Known Member

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    I am really starting to hate this truck....
     
  6. Apr 18, 2016 at 5:52 PM
    #6
    4WD

    4WD cRaZy oLdmAn

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    Dude, look at those shackles..!! rides ok ??

    [​IMG]

    & you haven't explained why moving hangers, as far as pinion angle give me a decent pic of angle
     
  7. Apr 18, 2016 at 5:52 PM
    #7
    steelhd

    steelhd Well-Known Member

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    Any vibrations?
     
  8. Apr 18, 2016 at 6:56 PM
    #8
    louied817

    louied817 [OP] Well-Known Member

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    no noticeable vibrations from before we did brackets.

    the only thing we did was weld on new brackets up front. hangars were not moved.

    i guess we could grind off bracket up front and move it forward. im just afraid that its going to cause another issue....

    right now the hanger on driver side has no play to move up (or expand).

    i will take pic of differential pitch.
     
  9. Apr 18, 2016 at 8:15 PM
    #9
    4WD

    4WD cRaZy oLdmAn

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    Dude, your killing me, the brackets you speak of ARE the spring hangers, no offense but you're kinda all over the map with what you want, you just can't arbitrarily move the hanger location without making sure they're laid out properly with regard to driveshaft length, this pretty much has to be "dead nuts" accurate.. Pinion angle can be adjusted with shims
     
  10. Apr 19, 2016 at 4:28 AM
    #10
    louied817

    louied817 [OP] Well-Known Member

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    Sorry man. Meant to say that rear brackets that hold shackles were not moved. I had to replace front brackets as they were rotting. Drivers side was obviously off.

    Kinda don't want to grind bracket off at this point. Just wanna know if I'm ok to drive it.
     
  11. Apr 19, 2016 at 10:20 AM
    #11
    4WD

    4WD cRaZy oLdmAn

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    Ok, NOW we're getting somewhere, front hangers were replaced & welded in stock config. location (hopefully) Are the springs you got stock Tacoma's ? If so, you are waaay off on hanger location by looking at the rear shackle (maxed out) I'd have to see in person before I'd rubber stamp it for safe highway use...
     
  12. Apr 19, 2016 at 2:52 PM
    #12
    louied817

    louied817 [OP] Well-Known Member

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    Yep. Drivers side is 1" shorter than passenger side when measuring hanger to hanger (front to rear).
     
  13. Apr 19, 2016 at 2:59 PM
    #13
    jberry813

    jberry813 Professional Fluffer Moderator

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    ...too much shit to list.
    You're screwed then.
    Cut off the front hanger and weld in a new one with the same eye to eye distance. 1" off left to right and your axle is gonna dog-leg.
     
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  14. Apr 19, 2016 at 4:47 PM
    #14
    4WD

    4WD cRaZy oLdmAn

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    See frame butcher 101, you can pick up this informative video at any 4wheel parts store.....




    hehehe.....
     
    jberry813[QUOTED] likes this.
  15. Apr 19, 2016 at 5:16 PM
    #15
    louied817

    louied817 [OP] Well-Known Member

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    Yep. Drivers side is 1" shorter than passenger side when measuring hanger to hanger (front to rear).
     
  16. Apr 19, 2016 at 5:18 PM
    #16
    louied817

    louied817 [OP] Well-Known Member

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    Odd thing is that springs were never removed from axle and rear hanger. Maybe it was like this before and we never noticed?
     
  17. Apr 19, 2016 at 5:20 PM
    #17
    SnowroxKT

    SnowroxKT Well-Known Member

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    Shackle angle is straight up effed!

    Do what @jberry813 said and cut/grind off the front spring hanger and remount it further forward. DO NOT drive like it currently is you might really damage things.
     
    Last edited: Apr 20, 2016
  18. Apr 20, 2016 at 5:54 AM
    #18
    louied817

    louied817 [OP] Well-Known Member

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    I've been driving like this for a while.....not my daily driver. Something I use to beat up on around the beach for fishing.

    Just noticed it when I took off bed to replace fuel sender gasket.

    Could I possibly get away with grinding off rear bracket and moving that toward rear.

    Moving front bracket forward - would really prefer not to deal with grinding that off with all the weld we put on there.

    Also, we never took spring off when we welded on new bracket. Rear shackle stayed mounted and spring stayed mounted to axle. So I'm confused as to how it's that far off. U boltS should have kept spring in place and not giving us much of an option as to where to mount. Again I'm thinking this has been like this but just never noticed.

    Hate this truck but it's so fun to beat on.
     
  19. Apr 20, 2016 at 8:45 AM
    #19
    jberry813

    jberry813 Professional Fluffer Moderator

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    ...too much shit to list.
    The front spring mounts are what dictate whether the axle is perpendicular to the direction of travel, not the rear shackle pivots. If you don't have the front mounts in the same spot left to right, the axle will be offset to one side (dog-leg). And that's exactly what is wrong.
    Moving the shackle pivot won't help anything except the shackle angle. It's a pivot...meant to rotate. The front hanger is not a pivot. It's intended to be stationary. Just because you kept the spring attached to the axle and shackle doesn't mean anything because the shackle pivots fore/aft. Sounds like you eyeballed where to weld in the new front mount and the shackle was pivoting aft.
    When welding new front pivots, you are supposed to take a common spot on both sides of the frame to identify where the pivot is to be welded. And then you cross measure/triangulate just like you would when building a rectangular box or tongue location on a trailer.

    Measure twice weld once. Otherwise........

    [​IMG]
     
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  20. Apr 20, 2016 at 11:22 AM
    #20
    louied817

    louied817 [OP] Well-Known Member

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    Jerry. Thanks for the input.

    I agree that shackle was aft when we welded front perch. Not sure how it got that way.

    So to move spring forward and mount perch in right spot I'm going to have to take u bolts off and move entire spring forward....

    If I move rear shackle aft, that would provide enough space for spring to flex and expand. We know that hangers allow for expansion of springs aft. Right now my spring on drivers side just compresses against underside of shackle mount and frame

    Axle is not doglegged by the way. If anything I get some twist aft on the entire axle and upon acceleration under load.
     

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