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WHATS WRONG WITH MY FRONT END?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by k5texan, Nov 16, 2001.

  1. k5texan

    k5texan 1/2 ton status

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    i will be driving down the road and hit a small bump and my steering wheel will start jerking back and forth real quick for a few seconds and then it stops. it happened once about 1.5 months ago and i thought it might be my ball joints which i was replacing 2 days later. so it has not happened again till last night. i got new balljoint the front end is alighned tires are balanced.
    anyone have a suggestion. any info appreciated
    thanks
    jared
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Worn tie-rod ends will also do that...I'd check every component of your steering up front and replace as necessary.

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
    <a target="_blank" href=http://coloradok5.com/gallery/project_T2> tRusty pics...</a>
     
  3. backlash

    backlash 1/2 ton status

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    Jared,

    Do a search using the phrase bump steer. And be sure to hit all posts.

    Good luck
     
  4. Twiz

    Twiz 1/2 ton status

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    This condition is kown as a "shimmy" and is a disadvantage to a solid axle front suspension design. With this suspension set up, both steering tires are interconnected, and when force is applied to one tire, it will also efect the other tire. Normaly, the shimmy goes by un-noticed or is canceld out. But, in some cases, the vibration is not canceld and is felt by the drver. (basicly, the vibration has reached a point of being out of control - Hermonicly)

    Check;
    - Suspension bushings worn/soft, or loose mounting bolts.
    - Axle U-bolts.
    - Drag links (gear to axle)
    - Tie-rod ends (tire to tre)
    - Steering gear mount, and steering gear play.
    Any play or loosenes in the above list will contribut to a Shimmy.
    Also check;
    - Steering dampner (this will do most of the work in "cancelig" vibrations related to steering)
    - Exseive wheel/tire off-set (tires that are to far out or extra-wide rims have more leverage over the steering, are hard to control)

    <font color=blue>Twiz</font color=blue>
     
  5. mudhog

    mudhog THEGAME Staff Member Super Moderator

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  6. k5texan

    k5texan 1/2 ton status

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    it not the bearings cause i got new when i did the balljoints.
    so i guess i will just with the bushing and go from their.
    just hate to put more money than i have to inthe 10 bolt when i should be saving up for the dana 60 with crossover steering!!!
    thanks for the help
    jared
     
  7. Twiz

    Twiz 1/2 ton status

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    k5tex;
    How are your tie-rod ends, and drag-links? Ar they in good shape?
    How aboutthe steering dampner?
    How wide are your rims, I think over 10" wide with less than 3.5" of back spaceing, and you miht have problems. (look at the rim to tie-rod clearance, there shoud be about and inch or so of clearance, the less the better)
    Tire size will also have an effect, over 36" or large bias/plys will also lead to shimmys in some cases.

    <font color=blue>Twiz</font color=blue>
     

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