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  1. #1

    Join Date
    Nov 2005
    Posts
    14
    Location
    San Jose, California, USA
    Tractor
    Kubota B7100

    Default B7100 Rear Differential Oil Change

    I am changing all the fluids in the old B7100 I bought. I can see how to drain the rear differential, both sides, but can't see how to refill.

    I did notice that when I drained the transmission and cleaned the filter I could not get the prescribed 12.2 qts of kubota UCD into it. Makes me wonder if it also fills the rear differential.

    Anyone give me advice?

  2. #2
    Super Star Member Egon's Avatar
    Join Date
    Aug 2001
    Posts
    17,311
    Location
    Nova Scotia, Canada

    Default Re: B7100 Rear Differential Oil Change


    Is this a gear model or HST?

    Egon. [img]/forums/images/graemlins/grin.gif[/img]

  3. #3
    Super Member ronjhall's Avatar
    Join Date
    Apr 2000
    Posts
    7,117
    Location
    SE Michigan, TX when its cold in MI.
    Tractor
    Kubota 2910 HST

    Default Re: B7100 Rear Differential Oil Change

    <font color="blue"> Makes me wonder if it also fills the rear differential. </font>
    Transmission and hydraulic system use same oil and filler. Not sure how much oil is needed.

  4. #4

    Join Date
    Nov 2005
    Posts
    14
    Location
    San Jose, California, USA
    Tractor
    Kubota B7100

    Default Re: B7100 Rear Differential Oil Change

    Yes, it is a gear model. I see two drain plugs at the rear differential (both sides) but I can's see how to refill....thus I suspect it is filled via the transmission. My manuals don't discuss this and barely acknowledged the drain plugs.

    Thanks for the help so far.

  5. #5
    Super Star Member Egon's Avatar
    Join Date
    Aug 2001
    Posts
    17,311
    Location
    Nova Scotia, Canada

    Default Re: B7100 Rear Differential Oil Change


    Mine Has HST so fraid I will not be of help.

    Egon

  6. #6
    Mat
    Mat is offline
    Member
    Join Date
    Feb 2003
    Posts
    46
    Tractor
    Kubota B7100

    Default Re: B7100 Rear Differential Oil Change

    HI, On my 7100, you refill the rear differential by way of the transmission filler on the top of the gearbox. the oil fills both transmission and axle case...... I hope this helps

  7. #7

    Join Date
    Nov 2005
    Posts
    14
    Location
    San Jose, California, USA
    Tractor
    Kubota B7100

    Default Re: B7100 Rear Differential Oil Change

    Thanks, that's what I suspected after not finding the manual's 12.2 qts after draining the transmission. After refilling it, I then discovered the two drains on both sides of the differential. I hadn't drained those. Having had already refilled with the kubota UDT (expensive) I didn't want to drain again so I let a little out of both and capped them. Fortunately the oil looked clean when draining original oil, and the differential looked clean too.

    At least I got about 8 or 9 new quarts in [img]/forums/images/graemlins/blush.gif[/img]

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