ThermoKing Tripac bogs down when A/C is on

Discussion in 'Ask An Owner Operator' started by MyLotion, Aug 2, 2020.

  1. MyLotion

    MyLotion Bobtail Member

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    Aug 20, 2019
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    Would the injection pump have anything to do with it even though the motor runs completely fine when blowing heat instead of A/C?
     
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  3. MyLotion

    MyLotion Bobtail Member

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    Aug 20, 2019
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    The compressor is old and will likely be replaced soon. I did drain a bit of freon and it did seem to help. I will run the motor again tomorrow with A/C and see if the problem persists.
     
  4. Ridgeline

    Ridgeline Road Train Member

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    Because the governor regulates the speed of the engine when it is run in a fixed speed mode. If the load on the engine is large, the speed goes down and the governor has the injection pump add fuel to the engine to keep it running at the fixed speed.

    This was a common problem with refeers with kuboto engines, especially the D722 and it is still a common problems with other engines.
     
  5. msh

    msh Light Load Member

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    did you fix the problem ?
     
  6. Nismax

    Nismax Bobtail Member

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    what you need my friend is updated manifold for ac compressor...I have been figting this problem for very long time , here is part number 22-1415 from thermoking.
     
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  7. Nismax

    Nismax Bobtail Member

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    Part# 22-1415 new manifold for ac compressor, toomuch freon floods compressor and compressor bogs engine down. Best of luck, Thank me later
     
    msh Thanks this.
  8. msh

    msh Light Load Member

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    Thanks for info. I have actually oversize T16 compressor. Looks like i need to get OEm compressor with new manifold
     
  9. Nismax

    Nismax Bobtail Member

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    imagejpeg-0-1
    648502537
    IMG-2696
    [​IMG]
    [​IMG]

    black manifold is old stile, as you can see new one cold side (brings freon in) is alot smaller, hot side is untouched. Cold side reduced how much freon goes in compressor and it won't bog down engine.
     
    Last edited: Jul 23, 2021
    msh Thanks this.
  10. Nismax

    Nismax Bobtail Member

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  11. msh

    msh Light Load Member

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    Very informative post. THANK YOU.
     
    Nismax Thanks this.
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