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  1. #1
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    Oct 2007
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    Default BX22 Apart for New HST-What Else Should I service?

    Got the transaxle apart to replace a failed HST and thought I would ask what you guys thought I should be doing as preventive maintenence while apart. It has 522 hours on it. DO the propeller shaft joints need service? u-joints?

    Thanks for any input!

    Brian

  2. #2
    Bronze Member
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    Jul 2011
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    94
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    Northwestern Vermont
    Tractor
    Kubota BX22

    Default Re: BX22 Apart for New HST-What Else Should I service?

    I'd check all the hydraulic lines.

    BX22
    Fel, BH, MMM, Plow/dozer blade with quick hitch. 4ft Box Blade, 3pt boom arm, 3pt 51" Meteor Snowblower!

  3. #3
    Super Member timswi's Avatar
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    Nov 2008
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    5,009
    Location
    Beaver County Pa
    Tractor
    Kubota BX23 & RTV1100

    Default Re: BX22 Apart for New HST-What Else Should I service?

    Quote Originally Posted by bkane View Post
    Got the transaxle apart to replace a failed HST and thought I would ask what you guys thought I should be doing as preventive maintenence while apart. It has 522 hours on it. DO the propeller shaft joints need service? u-joints?

    Thanks for any input!

    Brian
    Just curious...What happened at that many hours?...Seems very young for an HST failure.
    BX23TLB & RTV1100 with 72" Power Angle Plow

  4. #4
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    Default Re: BX22 Apart for New HST-What Else Should I service?

    Quote Originally Posted by timswi View Post
    Just curious...What happened at that many hours?...Seems very young for an HST failure.
    One piston in the pump motor wore out the barrel bore. All service was done on time and not abused. I saw a few other posts on this same failure. I think kubota has some limited faulty parts issues here where maybe the metal wasn't hard enough. Otherwise why would just one fail? I'll post pics tomorrow and you'll see.

  5. #5
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    Oct 2007
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    Default Re: BX22 Apart for New HST-What Else Should I service?

    Here's the pics......the one piston looks like it's out of the bore but it's in just like the others. That's how worn the bore is. I saw no other damage. I'm inclined to replace just the pump & motor rather than the whole HST. Any thoughts?-photo-1-jpg-photo-2-jpg

  6. #6
    Bronze Member
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    Jul 2011
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    94
    Location
    Northwestern Vermont
    Tractor
    Kubota BX22

    Default Re: BX22 Apart for New HST-What Else Should I service?

    If that's all that is wrong, why not save a lot of cash. 1518ish for the ready to bolt on pump is not that bad. Messicks even shows one in stock. Id just make sure you flush out the hydro real good to make sure no metal particulates are list hiding in it.

    BX22
    Fel, BH, MMM, Plow/dozer blade with quick hitch. 4ft Box Blade, 3pt boom arm, 3pt 51" Meteor Snowblower!

  7. #7
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    Default Re: BX22 Apart for New HST-What Else Should I service?

    Quote Originally Posted by OrangeBeast View Post
    If that's all that is wrong, why not save a lot of cash. 1518ish for the ready to bolt on pump is not that bad. Messicks even shows one in stock. Id just make sure you flush out the hydro real good to make sure no metal particulates are list hiding in it.
    That's what I did. Drives like a new machine. There's really no way to flush. I cleaned the strainer and installed a new filter. I will do a fluid and filter change after a few hours running.

  8. #8
    Veteran Member Deano's Avatar
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    Oct 2008
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    1,182
    Location
    Southern Maryland
    Tractor
    Kubota BX24

    Default Re: BX22 Apart for New HST-What Else Should I service?

    Thanks for the update! Great to hear you are back up and running!
    Deano
    2006 BX24, 6' New Implements rake, Woods RB60 rear blade, Wallenstein thumb, Bro-Tek rear skid plate, home made front skid plate, W.R. Long flat tooth bar, 4' finishing mower (TPH), 4' box blade, post hole digger, New style seat!!!!! Country Manufacturing manure spreader, Agri-Fab drop spreader.

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