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  1. #1
    Gold Member digger2's Avatar
    Join Date
    Dec 2006
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    265
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    n.e. pa.(lycoming co.)
    Tractor
    kubota B26 TLB,former B7610 owner

    Default B26 Alternator output

    Can anybody tell me how to find the output on a B26 kubota alternator?I'm sure it shares the alternator with another model Kubota.
    My dealer told me it was in the owners manual.Well if it is i cant find it.
    Is it stamped on the alternator somewhere?I'm layed up with the flu or i'd go look myself.
    thanks,digger2

  2. #2
    Gold Member gotcha's Avatar
    Join Date
    Mar 2007
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    307
    Location
    New England in the woods on the lake.
    Tractor
    (07) B26, (83) B7100D

    Default Re: B26 Alternator output

    Quote Originally Posted by digger2
    Can anybody tell me how to find the output on a B26 kubota alternator?I'm sure it shares the alternator with another model Kubota.
    My dealer told me it was in the owners manual.Well if it is i cant find it.
    Is it stamped on the alternator somewhere?I'm layed up with the flu or i'd go look myself.
    thanks,digger2
    I thought for sure I was going to be able to help you out as I have the Workshop Manual right here in front of me for the B26. Guess what, I can't find a thing as to what the output is. It tells you what it does and how to check and repair/replace parts but nothing about the output. I'm trying to locate something in it for the HST as I feel I have a small problem with it. When I'm drive (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. This condition happens when at idle or with it say at 1500.
    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

  3. #3
    Gold Member Taiser's Avatar
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    Feb 2005
    Posts
    463
    Location
    Northwestern Ontario, Canada
    Tractor
    Kubota B7800 with Loader and Backhoe, Cub Cadet 2160

    Default Re: B26 Alternator output

    If it's a "dynamo" which most kubota's have it should put out about 14-15 amps. The optional alternator that kubota offers has 40 amps and that probably what something like the B26 has as standard equipment (just a guess).

  4. #4
    Gold Member bialecki's Avatar
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    Jan 2007
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    274
    Location
    Oxford, CT

    Default Re: B26 Alternator output

    Most likely if it is an alternator it will be the 40 amp version, kubota also has a 50 amp alternator for their larger tractors. If it is the dynamo (little gray painted device) it puts out 5 amps at idle speed (per my factory manual for the B7800). I checked the Kubota web site and I was not able to find the exact spec on line, possibly in their parts manual you can find it.

  5. #5
    Veteran Member Volfandt's Avatar
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    Sep 2004
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    1,879
    Location
    TN
    Tractor
    2004 Kubota BX23, 1966 WheelHorse 856

    Default Re: B26 Alternator output

    The BX23 WSM lists the dynamo's output at 14 - 15 amps @ pto speed (approx 3000 rpm).
    I'd say if your B26 has the dynamo that it would have the same output at the B26's rated pto speed due to pulley differences.

    Likes been said, the dynamo is a little gray painted device whereas the OEM alternator looks just like an automotive alternator, theres a very discernable difference between them.
    BX23 w/60" MMM & thumb.
    1966 Wheelhorse 856, Gear drive.
    1966 Wheelhorse 876, HST drive.
    w/50"sickle mower, 36" RDM, snow/grader plow, Alternator welder.

  6. #6
    Silver Member Adam23's Avatar
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    Sep 2006
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    156
    Location
    Upstate, South Carolina
    Tractor
    Kubota B7500

    Default Re: B26 Alternator output

    What is the expected life span of a dynamo? Is it a good idea or a waste of money to upgrade to a alt if you do not have any extra's (lights, goodies) on the tractor?
    Kubota B7500HST, LA302 FEL, 60" MMM, Scrape Blade, Box Blade, Rock Rake, Broadcast Spreader,

  7. #7
    Epic Contributor Soundguy's Avatar
    Join Date
    Mar 2002
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    47,883
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: B26 Alternator output

    If you don't have any electrical demand past what the existing system is putting out.. why mess with it?

    My old 1975 ford 5000 has a 12v generator ( max 20a ).. My total electrical loads are 15.5a, not including charge current charge current.. ( that's 2 55w h-lamps, 1 55w rear lamp, a dash lamp, and a fender mounted flasher.

    Thus.. ford pretty much sized that electrical system 'perfectly' to that tractor. If I needed much more electrical capacity than that.. for extended periods of time.. i could upgrade to a cheap delco alternator like a 10-SI.. inthe 35-90a range and kludge it up.. or use tha alt kit similar to my 2002 NH 7610S.. which has nearly the same electrical load demands.. and a wee bit more generation capability with it's NH alternator.. etc..

    Soundguy

  8. #8
    Gold Member digger2's Avatar
    Join Date
    Dec 2006
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    265
    Location
    n.e. pa.(lycoming co.)
    Tractor
    kubota B26 TLB,former B7610 owner

    Default Re: B26 Alternator output

    Guys,just wanted to know for possible future reference.It is an alternator
    not a dynamo like my previous B7610 had.I know theres been alot of past questions about upgrading the dynamoes on that series,and i was just
    curious about the output on this tractor.I'm sure 40 amps is more than enough for any future add ons.
    Hey gotcha,my B26 does "lurch" in all ranges, but so far only when its cold.
    Hav'nt noticed it when its warmed up yet.
    Thanks for all the responses guys............digger2

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