bad u-joint???

Discussion in 'Kenworth Forum' started by tlg1100, Aug 17, 2011.

  1. tlg1100

    tlg1100 Bobtail Member

    Aug 17, 2011
    Have mechanic at our shop and he doesn't have much experience on semi trucks so I will try on here.Have kenworth dumptruck and one driver said u-joints were bad and the mechanic just put on strap and bolts,I seen him moving the U-joint up and down against the stop or tags that the cup rest on,the mechanic just put u joint straps on and tighten them.I thought the u-joint should fit tight in between the stop were the cups with needle bearing are,hope this explains what I mean thank you
  2. KW Parts Guy

    KW Parts Guy Light Load Member

    Jul 16, 2011
    When in doubt, change it out! U-joints are dirt cheap, even for a brand name spicer, compared to spitting out a shaft and the related towing and repair charges!
    Onetruckpony Thanks this.
  3. superhauler

    superhauler Super Crusty

    Jan 30, 2010
    the yoke could be worn. the caps should not move after tightening the straps.
  4. Pedigreed Bulldog

    Pedigreed Bulldog Road Train Member

    May 7, 2011
    cheap (relatively) & easy to change...there is no reason NOT to replace a u-joint that has any slop in it.
  5. dave26027

    dave26027 Road Train Member

    Sep 10, 2009
    Dallas, Texas
    Change it in the shop or change it on the job site, it's your call..

    Shouldn't be any movement after a new one's installed- up, down or side to side.
  6. black_dog106

    black_dog106 Road Train Member

    Mar 29, 2009
    As the members have said, fix it. Letting it go is only making bigger problems. It is going to cause vibration. When it breaks, if your lucky the truck will uneventfully come stop. If you have my luck, the driveshaft flopping around is going to rip out other things under the truck....:biggrin_25521:
  7. drwye

    drwye Bobtail Member

    Aug 27, 2011
    The problem could be the yoke is worn as well, the new U-joint will come with straps but if the cup come loose under the straps again in a short time the yoke is worn.
  8. oregon1001

    oregon1001 Bobtail Member

    Oct 30, 2011
    If in doubt fix it! Loose a ujoint will cost you air line, air bags, broken driveline, that will get expensive!!!!
  • Draft saved Draft deleted