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Thread: socal715 : Installing PTO

  1. #1

    Default socal715 : Installing PTO

    Installing PTO
    Post by socal715 on May 25, 2006, 4:05pm

    I heard....(im new to the whole PTO thing) that you actually have to set the backlash on the pto gearset (like setting up a R&P) when mounting it up to the t-98? is this true?

    Can someone explain how you go about this.. maybe shed some light on it for me? Maybe im living in a fairy tale.. but i thought the PTO just bolted straight up?

  2. #2
    Join Date
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    Default brute4c :

    Re: Installing PTO
    Post by brute4c on May 25, 2006, 4:09pm

    Gasket thickness...use the gasket as a shim to set the proper distance...

    I havent done it but I remember spicer explaining that to someone...

  3. #3

    Default socal715 :

    Re: Installing PTO
    Post by socal715 on May 25, 2006, 4:10pm

    Okay, i remember cowan saying something about that too.... whats the proper gasket thickness?

    maybe ill go over to pirate and hit up spicer.. since he hides out over there hehehe

  4. #4
    Join Date
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    11,520

    Default brute4c :

    Re: Installing PTO
    Post by brute4c on May 25, 2006, 4:30pm

    I think it varies by installation....what you need may be a few thousanths different than the next guy...thus the need to vary the thickness using the gaskets as shims...

  5. #5

    Default socal715 :

    Re: Installing PTO
    Post by socal715 on May 25, 2006, 4:56pm

    I found this .. just looking around on the web..

    http://www.parker.com/chelsea/cat/en...1670-M1_US.pdf

    Shows how to set the backlash.


    What is Gear Backlash?

    Backlash is defined as the space between meshing surfaces of the gears in gearbox devices. Space is needed for expansion caused by heat and viscosity changes in lubricants.

    Refer to PTO owner's manual for the correct backlash adjustment procedure which is to be performed on every PTO installation. Use of a dial indicator is recommended. The recommended backlash between the transmission and PTO is from .006 to .012 inches.
    Too many gaskets will create too much backlash cause the PTO to rattle when running at no load. To correct - remove one or more gaskets and recheck backlash.
    Too few gaskets will cause PTO to whine and may cause difficult shifting of the PTO and transmission. To correct - add one or more gaskets and recheck backlash.
    PTO's will not always make noises when improperly spaced.
    Correct backlash must also be established when gear adapters are used. Transmissions using automatic transmission fluid may have higher noise levels caused by the thinner consistency of the lubricant and the large PTO drive gear in the transmission.

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