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clunking - U Joint?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BPS, Jun 2, 2001.

  1. BPS

    BPS Registered Member

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    Sooke, BC, Canada
    I get a bit of a clunk on takeoff, and was told that it may be a U joint - is there an easy way to tell what shape the U-Joints are in?
     
  2. ChevyCaGal

    ChevyCaGal 3/4 ton status

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    Do you have a locker? My friend has one on his Jeep and it clunks very loud when he hits the gas from a stand still... but that's normal... so if you have a locker that could be what's causing the noise...

    "Suck Fumes Ford Boy"
    "I love my country, I fear my government"
    <A target="_blank" HREF=http://www.chevycagal.homestead.com/steph.html>http://www.chevycagal.homestead.com/steph.html</A>
     
  3. ftn96

    ftn96 1/2 ton status

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    Well, again you need to fill out your profile and give us more details on what your got on your rig.
    If you have a newer one that has a 208 or 241 slip yoke style T-case, you could be getting the clunk from that. It could be the U-joints, it could be a motor mount, it could be the tranny mount. You could have some loose u-bolts. We need more info.
    Like Cal gal said, i t could be the locker, if you have one. WE NEED MO INFO!!!!!
    Help us help you.

    Steve Fox for President, 2004.
    Jimi Hendrix was re-incarnated in 1990 as my....JIMI
     
  4. ftn96

    ftn96 1/2 ton status

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    But to answer your question.....[​IMG]
    The best way to check your u-joints is to:
    1 chock the wheels and put the rig in neutral, then climb up under the rig and grab the driveshaft and push it up and down and then side to side. See if you have any movement. Forget the rotary movement. We are looking for up and down side to side slop.
    Hope this is what you needed. [​IMG]

    Steve Fox for President, 2004.
    Jimi Hendrix was re-incarnated in 1990 as my....JIMI
     
  5. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Yeah, I second ftn96's method of checking the u-joints. [​IMG]

    When In Doubt, Whip It Out!
     

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