bad u-joint???

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

  1. tlg1100

    tlg1100 Bobtail Member

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    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

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    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

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

    Pedigreed Bulldog Road Train Member

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    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

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    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

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    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

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    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

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    If in doubt fix it! Loose a ujoint will cost you air line, air bags, broken driveline, that will get expensive!!!!
     
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