1 Trailer hub running 15° hotter?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by double yellow, Aug 31, 2014.

  1. Alaska76

    Alaska76 Road Train Member

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    Were I, you, I would have those bearings out, cleaned, and be taking a close look at them for signs of failure. Chances are that they are breaking down, probably looking dull and matte gray on the weight bearing surfaces, rather than bright shiny chrome in appearance.

    If it were a brake adjustment or other brake related issue, the drum temp. would be a clear indicator in that area- outer circumference of the drum.
     
    Hammer166 Thanks this.
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  3. double yellow

    double yellow Road Train Member

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    It is the older style grease-packed hub (1998 Monon dry van). No window, no oil plug... Hub temp reached 150* today (compared to 100ish for the others) with an empty trailer! Guess I'll play Sacramento-area trailer shop roulette on Monday -- still haven't found a good mechanic in the area...
     
  4. freightlinerman

    freightlinerman Road Train Member

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    Seriously, 10-15 degrees? I checked the tires on my truck after a drive, one steer was 116, the other was 120. Should I be concerned? They were both the same pressure cold when I checked them...
     
    Last edited: Sep 14, 2014
  5. double yellow

    double yellow Road Train Member

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    2 weeks ago it was the same temp as the rest
    1 week ago it was 15 degrees hotter
    today it was 50 degrees hotter

    can't say it hasn't been giving me warning...
     
  6. Davidlee

    Davidlee Medium Load Member

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    When was the last bearing replacement and what would you loose by replacement them?
     
  7. Rock hauler

    Rock hauler Light Load Member

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    I think these hubs are none serviceable, the cost for the hub assembly is over 1000 bucks. I think the spindle is different so you can't put the other hub on it. From what I've seen you are about to fix it on on the shoulder somewhere. Good luck
     
  8. Davidlee

    Davidlee Medium Load Member

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    Some of those non-serviceable hubs can be replaced under warranty. It doesn't matter the age. If that's the case, they will send you brand new axles complete with wheel ends. Good lunck!
     
  9. russellkanning

    russellkanning Medium Load Member

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    man that sure doesn't sound good
     
  10. double yellow

    double yellow Road Train Member

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    Back from shop #2 -- this one a brake, tire & alignment specialist. They took it apart, found nothing wrong, threw in new seals and repacked new grease. Hub still 40* hotter after a 15 mile deadhead.

    Is it possible that airbag is putting more pressure so that wheel has more weight on it? The trailer was aligned a month ago and tracks straight...
     
  11. wedge542

    wedge542 Light Load Member

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    you would be able to pick that up with your temp gun if tires hotter on that asemb.,,i think i woulda had those bearings and races replaced for a piece of mind.
     
    double yellow Thanks this.
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