Western Belt Trailer

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mike216, Sep 23, 2021.

  1. mike216

    mike216 Bobtail Member

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    Dec 15, 2013
    Cordova,Md
    0
    Thanks
     
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  3. Goodysnap

    Goodysnap Road Train Member

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    This may be a good place to use a Flir thermal imager? Just to see whats hot, how hot and when?

    Are both lines to and from the motor getting too hot? Is there a flow restriction device inline to control motor speed or is it just on/off one speed?

    That nylon air line is only rated for 200*F. My guess is you had a situation where a line got hot enough to melt thru a line. Was it at a steel fitting or in the ceter of the hose assy? I think it would take more like 3 or 400 to melt thru it.

    Do you have a sister trailer you have compared temps too?
     
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  5. mike216

    mike216 Bobtail Member

    39
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    Dec 15, 2013
    Cordova,Md
    0
    The temp. today got up to 300*F. Oil started dripping out of the plugs on side of pump. Stopped unloading trailer. We had about 10 tons left on trailer. Hooked a truck with Hydraulic cooler to the trailer to finish unloading. It took about 15mins. to finish unloading and by then the oil was 250 at return on truck .175-180 on pressure of truck.
    Did find a check valve in the return line midway of trailer. Oil started getting hotter on the discharge side of the check valve. That was the first place where I notice heat. 120 in ,180-200 out.
     
  6. Hardy541

    Hardy541 Bobtail Member

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    Nov 27, 2018
    Burns, OR
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    Any bent links or crossbars on the belt? Slightly bent crossbars are sometimes hard to spot and will drag in places you can’t see. 2E25E511-2A02-4FC7-B43B-111582458C03.jpeg
     
    BoxCarKidd Thanks this.
  7. AModelCat

    AModelCat Road Train Member

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    If you're seeing an 80° jump in temperature across a check valve, there is definitely a restriction in there. I'd investigate that further.
     
    BoxCarKidd and Goodysnap Thank this.
  8. Caterpillar Cowboy

    Caterpillar Cowboy Heavy Load Member

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    Wyoming
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    I'm gonna ask a real dumb question, but is your tank full of oil?

    Trailer probably doesn't take too much oil to run it, but having a bigger tank in reserve, or in this case your tank being full of oil vs low, gives the whole system more oil to use overall keeping the system cooler.

    At least that's the basics of how an old timer explained it to me one time. Full disclaimer I by absolutely no means claim to be a hydraulic man but I've got some of the basics down I think.
     
  9. mike216

    mike216 Bobtail Member

    39
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    Dec 15, 2013
    Cordova,Md
    0
    Yes and the trailer is heating up on three different trucks
     
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