Results 1 to 8 of 8
  1. #1
    Gold Member gotcha's Avatar
    Join Date
    Mar 2007
    Posts
    307
    Location
    New England in the woods on the lake.
    Tractor
    (07) B26, (83) B7100D

    Default Jumping HST on B26

    I'm trying to locate something in my Workshop Manual for the B26 for the HST as I feel I have a small problem with it. When I'm driving (forward/reverse) at a constant speed it will jump and go faster. Not a tremendous increase of speed, but enough if I were backing up to an attachment and someone was there to assist me and it jumped someone really could get hurt. (Pedal has not been moved by the operator)This condition happens when at idle or with it say at 1500 or any RPM's . Any ideas as to what may be happening?
    The Gotcha Man

    (07) Kubota B26-(83)Kubota B7100D-(09) Chevy 1500 Silverado Z71 4X4 LTZ ext cab-(07) Chevy Silverado 2500HD crew cab 4X4 LTZ-(07)Cub Cadet 1046-Troy-Built 8.5 HP Vac/Chipper-Agri-fab plug aerator 48"-48" Agri-fab tine de-thatcher-Agri-fab Mow-N-Vac-Agri-fab Pro spiker/seeder 175# cap.-(06)5 ton 10PI18 Big Tex flat bed trailer-(07)TR6810L5 5 ton Down East dump trailer-(07)35SA10 Big Tex utility trailer-Tow behind 10 HP 4-way log splitter

  2. #2
    Veteran Member easygo's Avatar
    Join Date
    Mar 2007
    Posts
    1,402
    Location
    Eddington, Maine
    Tractor
    Kubota B7800

    Default Re: Jumping HST on B26

    If the pedal is down even a little in HI range I have heard of the same lurch and in fact my much smaller tractor does the same thing. It happens more when engine is not up to operating temp. My dealer claims that in High Range most HST Kubotas do that. I can't say I tried them all to give an independent confirmation of that.
    It's the going that counts not the distance!

  3. #3
    Gold Member gotcha's Avatar
    Join Date
    Mar 2007
    Posts
    307
    Location
    New England in the woods on the lake.
    Tractor
    (07) B26, (83) B7100D

    Default Re: Jumping HST on B26

    Quote Originally Posted by easygo
    If the pedal is down even a little in HI range I have heard of the same lurch and in fact my much smaller tractor does the same thing. It happens more when engine is not up to operating temp. My dealer claims that in High Range most HST Kubotas do that. I can't say I tried them all to give an independent confirmation of that.
    easygo, Any where near Waldoboro on the coast

    Thanks for your comments. My problem does it in all speeds, High, Mid and Low. Temp is up to operating temp. or at least should be as the unit has been running for better than an hour when I have it happen. Come on back with some more suggestions please.
    The Gotcha Man

    (07) Kubota B26-(83)Kubota B7100D-(09) Chevy 1500 Silverado Z71 4X4 LTZ ext cab-(07) Chevy Silverado 2500HD crew cab 4X4 LTZ-(07)Cub Cadet 1046-Troy-Built 8.5 HP Vac/Chipper-Agri-fab plug aerator 48"-48" Agri-fab tine de-thatcher-Agri-fab Mow-N-Vac-Agri-fab Pro spiker/seeder 175# cap.-(06)5 ton 10PI18 Big Tex flat bed trailer-(07)TR6810L5 5 ton Down East dump trailer-(07)35SA10 Big Tex utility trailer-Tow behind 10 HP 4-way log splitter

  4. #4
    Veteran Member easygo's Avatar
    Join Date
    Mar 2007
    Posts
    1,402
    Location
    Eddington, Maine
    Tractor
    Kubota B7800

    Default Re: Jumping HST on B26

    Gotcha Man,

    I have no farther knowledge on the problem, I'm surprised that someone much more knowledgeable haven't made a remark. Fortunately for me I have no other experience with transmission related issues. I'm near Bangor but Waldoboro is certainly a nicer town. Easygo
    It's the going that counts not the distance!

  5. #5
    Elite Member dfkrug's Avatar
    Join Date
    Feb 2004
    Posts
    4,354
    Location
    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: Jumping HST on B26

    Gothcha, my B21 is very jumpy in HI range also. I just finished
    completely rebuliding the HST, rear end, and both of its gear
    boxes. It may be very similar to the B26. This jumpiness may
    be better when the oil is warmer.....I have not tested that.
    See my TBN projects at:
    http://mysite.verizon.net/resyfcgt/

  6. #6
    Gold Member gotcha's Avatar
    Join Date
    Mar 2007
    Posts
    307
    Location
    New England in the woods on the lake.
    Tractor
    (07) B26, (83) B7100D

    Default Re: Jumping HST on B26

    Quote Originally Posted by easygo
    Gotcha Man,

    I'm near Bangor but Waldoboro is certainly a nicer town. Easygo
    Only because of Moody's Diner. The best and friendliest diner in the USA. You can see I'm kinda bragging.
    The Gotcha Man

    (07) Kubota B26-(83)Kubota B7100D-(09) Chevy 1500 Silverado Z71 4X4 LTZ ext cab-(07) Chevy Silverado 2500HD crew cab 4X4 LTZ-(07)Cub Cadet 1046-Troy-Built 8.5 HP Vac/Chipper-Agri-fab plug aerator 48"-48" Agri-fab tine de-thatcher-Agri-fab Mow-N-Vac-Agri-fab Pro spiker/seeder 175# cap.-(06)5 ton 10PI18 Big Tex flat bed trailer-(07)TR6810L5 5 ton Down East dump trailer-(07)35SA10 Big Tex utility trailer-Tow behind 10 HP 4-way log splitter

  7. #7
    Gold Member gotcha's Avatar
    Join Date
    Mar 2007
    Posts
    307
    Location
    New England in the woods on the lake.
    Tractor
    (07) B26, (83) B7100D

    Default Re: Jumping HST on B26

    Quote Originally Posted by dfkrug
    Gothcha, my B21 is very jumpy in HI range also. I just finished
    completely rebuliding the HST, rear end, and both of its gear
    boxes. It may be very similar to the B26. This jumpiness may
    be better when the oil is warmer.....I have not tested that.
    Thanks for your input. My son told me that he has not had the problem after he has been using BH for awhile but did notice it when he first started to run it. I guess he is kinda answering my question for me. I had mentioned it to him before, but said he never heard me. That's the way kids are. They only hear what they want to I guess even at 38. The Gotcha Man

    (07) Kubota B26-(83)Kubota B7100D-(09) Chevy 1500 Silverado Z71 4X4 LTZ ext cab-(07) Chevy Silverado 2500HD crew cab 4X4 LTZ-(07)Cub Cadet 1046-Troy-Built 8.5 HP Vac/Chipper-Agri-fab plug aerator 48"-48" Agri-fab tine de-thatcher-Agri-fab Mow-N-Vac-Agri-fab Pro spiker/seeder 175# cap.-(06)5 ton 10PI18 Big Tex flat bed trailer-(07)TR6810L5 5 ton Down East dump trailer-(07)35SA10 Big Tex utility trailer-Tow behind 10 HP 4-way log splitter

  8. #8
    Gold Member gotcha's Avatar
    Join Date
    Mar 2007
    Posts
    307
    Location
    New England in the woods on the lake.
    Tractor
    (07) B26, (83) B7100D

    Default Re: Jumping HST on B26

    Quote Originally Posted by dfkrug
    Gothcha, my B21 is very jumpy in HI range also. I just finished
    completely rebuliding the HST, rear end, and both of its gear
    boxes. It may be very similar to the B26. This jumpiness may
    be better when the oil is warmer.....I have not tested that.
    Thanks for your input. My son told me that he has not had the problem after he has been using BH for awhile but did notice it when he first started to run it. I guess he is kinda answering my question for me. I had mentioned it to him before, but said he never heard me. That's the way kids are. They only hear what they want to I guess even at 38.
    The Gotcha Man

    (07) Kubota B26-(83)Kubota B7100D-(09) Chevy 1500 Silverado Z71 4X4 LTZ ext cab-(07) Chevy Silverado 2500HD crew cab 4X4 LTZ-(07)Cub Cadet 1046-Troy-Built 8.5 HP Vac/Chipper-Agri-fab plug aerator 48"-48" Agri-fab tine de-thatcher-Agri-fab Mow-N-Vac-Agri-fab Pro spiker/seeder 175# cap.-(06)5 ton 10PI18 Big Tex flat bed trailer-(07)TR6810L5 5 ton Down East dump trailer-(07)35SA10 Big Tex utility trailer-Tow behind 10 HP 4-way log splitter

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2013 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.