Tripac Apu smoking

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Alexp2686, Oct 27, 2020.

  1. Alexp2686

    Alexp2686 Bobtail Member

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    I Just purchased a truck 2 months ago and it came with a tripac evolution. I was out for 2 weeks and it seemed to work fine heat and cool, but my last day out I turned the AC on and went to bed then my bunk started smelling funny almost like the smell of fireworks so I turned it off and when I checkd the apu outside it was smoking from the side where the belt is and it was really hot when i turned the switch to off I could feel the heat on my hand.
    Idk if its electrical or something else, Does anyone know what could be the problem?
     
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  3. truckdriver31

    truckdriver31 Road Train Member

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    take covers off then advise
     
  4. Judge

    Judge Road Train Member

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    My advice.
    Don’t turn it on, it’ll smoke up the environment and be bad on the kids.
    2. Don’t touch it, it’s probably hot.
    Turn off master switch go to Thermoking in Little Rock, got a guy there that’s good on them.
     
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  5. D.Tibbitt

    D.Tibbitt Road Train Member

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    Could be a burned up alternator . Does it still work properly ? Charge batteries ? Run ac/bunk heat ?
     
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  6. Alexp2686

    Alexp2686 Bobtail Member

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    I was tginking it could be the alternator cause of the smell. It does turn on, but as far as charging the batteries idk, I turned it on this morning to see if it would start for 1 second and as soon as it started i shut it off. Before this happened everything was working fine ac and heat even when it happened it was blowing ice cold all it did was smell kind of like fireworks when you light them. After that smell i jumped out of the truck opened the apu and saw smoke coming from the belt area so I turned the master switch off and grabbed my extinguisher thinking there was gonna be a fire.
     
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  7. D.Tibbitt

    D.Tibbitt Road Train Member

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    Take off the covers and take a look. There is only 3 pulleys back there for the belt. Alternator ,ac, and the crank. Maybe belt is rubbing or something . Take some pics while ur in there too
     
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  8. Alexp2686

    Alexp2686 Bobtail Member

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    Would be nice if its just the belt rubbing something. The trucks in the shop, but Ill drive up there tomorrow and take some pics. Thank you
     
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  9. magoo68

    magoo68 Road Train Member

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    Does it have a dpf that might’ve Been doing a burn
     
  10. Alexp2686

    Alexp2686 Bobtail Member

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    Im not sure how would I find that out? I just got this truck. I wasnt able to get the cover off today the mechanic had it in the garage all day, but should be able to tomorrow morning.
     
  11. Alexp2686

    Alexp2686 Bobtail Member

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    I just googled it and no it does not.
     
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