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  1. #1
    New Member
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    Jan 2010
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    17
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    Maysville,North Carolina
    Tractor
    allis chamler b-John Deere870 tractor loader

    Default Gas power to pto power

    Hi, I have a industrial pressure washer and the motor is no good and the pump is still good.What I am asking is can I make it into a pto pressure washer? The pump is a 3000psi and5.0GPM.I going to run it off a 540pto tractor.

  2. #2
    Gold Member cmore's Avatar
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    Jul 2012
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    261
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    nw tn
    Tractor
    traded MF135 for a 2605 4x4

    Default Re: Gas power to pto power

    U would have to increase the 540 rpms, to get much pressure out of it. Probably be cheaper to buy a new HF engine to power it.

  3. #3
    New Member
    Join Date
    Jan 2010
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    17
    Location
    Maysville,North Carolina
    Tractor
    allis chamler b-John Deere870 tractor loader

    Default Re: Gas power to pto power

    Thank you for reply back, In what way will I have to increase the 540rpm I going to run it off my Tractor pto if I can. Because a motor for that pressure washer run you about $2,000 dollar so that why hoping I can make it pto drive.

  4. #4
    Veteran Member
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    Feb 2007
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    1,573
    Location
    easten Colorado
    Tractor
    JD 4020

    Default Re: Gas power to PTO power

    If the old motor was 1800 then one will have to basically go 3 to1 if the motor was 3600 then about 6 to 1 or a tad more.

    figure out what the old motor or engine ran the pump at and divide that by the 540 and that is what one will have to step it up, so and then use a large enough small pulley to grip the and handle the HP of the unit, for example you say 3600 and need 6.6 to 1 say we put a 18" on the PTO the pump would be, 2.72" or close to that, for running the pump at 3600, if it is industrial like you said one it be speed reduced all ready so first you need to know what to run the pump at,

    Unless one can use surplus parts by the time you get a PTO shaft, bearings, and pulleys and belts, and frame my guess is to buy new your costs are going to run in the $300 to $600 dollar range, (and if the replacement engines, is $2000 I would think you should consider a double to triple belt pullers and the cost could increase greatly, as your most likely dealing with a 16 to 25 hp engine, and a B belt is more or less a 8 to 10 hp range, (especially on the >3" driven pulley).

    what would it cost to rebuilt the other engine?

    As far as making it PTO drive it is most likely easy ly do able,

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    If your going to three point or trailer mount it consider a tank on it for remote use, so one would not need a hose hooked to it,

    pto pressure washer - Google Search

    It appears that many of the manufactures use a gear box for the speed increaser, (may be possible to ding one using the same pump and buy the gear box and simplify the building).

  5. #5
    Elite Member
    Join Date
    Jan 2010
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    3,461
    Location
    Oklahoma
    Tractor
    JD cut

    Default Re: Gas power to pto power

    On a direct connect, the power-washer pump running at 540 rpm will just dribble, not squirt. You will have to gear it up to the same operating rpm of the gas motor to get any pressure.

    BHD's answer above is mathematically and mechanically better.
    Last edited by greasemonkeyok; 10-06-2012 at 10:15 AM. Reason: BHD posted while I was writing.

  6. #6
    Veteran Member
    Join Date
    Feb 2007
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    1,573
    Location
    easten Colorado
    Tractor
    JD 4020

    Default Re: Gas power to pto power

    one more quick thought, if your tractor has the 1000 RPM PTO option, it may make it easer to gear ti properly,

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