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PTO RPM Fluctuations

Discussion in 'Tanker, Bulk and Dump Trucking Forum' started by PJM41, Sep 20, 2021.

  1. Sep 20, 2021 #1
    PJM41

    PJM41 Bobtail Member

    20
    3
    Oct 26, 2018
    0
    Looking for some thoughts on whether this is normal or not.
    While running PTO at idle to blow off cement powder from a pneumatic tanker, my truck’s RPM fluctuates 10-15 rpm every 10 or so seconds. It both increases or decreases 10+ RPM from its setting of 1050rpm for a blip then settles back at 1050.
    It is obviously very slight, but you can notice the surging. I don’t believe my previous truck and blower did this
     
    PJM41, Sep 20, 2021
    PJM41, Sep 20, 2021
    #1
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  3. Sep 20, 2021 #2
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    May 2, 2021
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    Does it do the same without the PTO kicked in? Do something to load the engine some more, such as, engine fan on, A/C on, or turn the steering wheel to one side and hold it there.

    What truck and engine?
     
    Big Road Skateboard, Sep 20, 2021
    Big Road Skateboard, Sep 20, 2021
    #2
    Bean Jr. Thanks this.
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