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  1. #1
    Silver Member
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    Jan 2011
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    168
    Location
    Kansas
    Tractor
    2010 Kubota M7040

    Default Axle and diff oil

    Do the two front axle gear cases and the differential case share oil? In other words, if i drain all the oil from the 2 axle cases and pour oil in the differential without replacing drain plugs, will the diff oil run out of the drain holes?

  2. #2
    Platinum Member brandoro's Avatar
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    Jan 2008
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    656
    Location
    Central Saskatchewan
    Tractor
    Kubota B3030 HSTC

    Default Re: Axle and diff oil

    If it is like mine then the answer is yes, it is a common case.
    Your owners manual should tell you that, best to check with it to be sure.
    Rod.
    B3030HSDC, LA403 FEL, B2782A front blower, B5320 ballast box, Landpride-BH, RFM, tiller, FM2060 flail, GS1572 grader/scraper, BX42 chipper, PTO generator, homebuilt splitter and 3pt carry all.

  3. #3
    Silver Member
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    Kansas
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    2010 Kubota M7040

    Default Re: Axle and diff oil

    The reason i'm asking is the manual says to put 3.7qts in each axle case and 5.8qts in the diff. I dont understand why not just fill it at the diff hole till its full. I drained both sides today and cant get in the amount of oil the book calls for. I have about a qt or so left over.

  4. #4
    Platinum Member brandoro's Avatar
    Join Date
    Jan 2008
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    656
    Location
    Central Saskatchewan
    Tractor
    Kubota B3030 HSTC

    Default Re: Axle and diff oil

    Sounds like yours is a different arrangement than mine is. Does the manual show a third drain plug for the differential section?
    Rod.
    B3030HSDC, LA403 FEL, B2782A front blower, B5320 ballast box, Landpride-BH, RFM, tiller, FM2060 flail, GS1572 grader/scraper, BX42 chipper, PTO generator, homebuilt splitter and 3pt carry all.

  5. #5
    Silver Member
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    168
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    Kansas
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    2010 Kubota M7040

    Default Re: Axle and diff oil

    No it doesnt.

  6. #6
    Gold Member bill in ny's Avatar
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    Feb 2008
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    287
    Location
    south central new york
    Tractor
    kubota m8540hdc12 jd 2305 jd 4005 jd 5055e

    Default Re: Axle and diff oil

    Quote Originally Posted by ole farmerbuck View Post
    No it doesnt.
    on the m8540 there are three different drain plugs. look on the right side of the differential. on the back side toward the rear of the tractor. there should be a filling port, check plug, and drain plug. may be on the left side on the m7040.

  7. #7
    Silver Member ritschner's Avatar
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    Aug 2010
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    115
    Location
    Burnet, TX
    Tractor
    Kubota L2800 HST

    Default Re: Axle and diff oil

    It seems to take a while for the lube to work its way into the pinion housing on the axle ends. You may need to run it for a short distance or lift the front end and rotate the axle assemblies. Mine was the same way. I went back later and it took the extra quart to top it off.
    2007 L2800HST, R4's, Rear 3-Point Lever, LA463 FEL W/Shortened Loader lever, Rhino 160 mower, Armstrong Ag box blade, Armstrong Ag rake,

  8. #8
    Silver Member
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    Jan 2011
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    168
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    Kansas
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    2010 Kubota M7040

    Default Re: Axle and diff oil

    Quote Originally Posted by ritschner View Post
    It seems to take a while for the lube to work its way into the pinion housing on the axle ends. You may need to run it for a short distance or lift the front end and rotate the axle assemblies. Mine was the same way. I went back later and it took the extra quart to top it off.
    I think thats the trick. Got more in it today but still not what the book calls for. I'm going to check it each day for a few days just make sure. Thanks guys.

  9. #9
    Silver Member
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    Kansas
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    2010 Kubota M7040

    Default Re: Axle and diff oil

    Quote Originally Posted by bill in ny View Post
    on the m8540 there are three different drain plugs. look on the right side of the differential. on the back side toward the rear of the tractor. there should be a filling port, check plug, and drain plug. may be on the left side on the m7040.
    Yea there is one drain at each wheel and thats it. Just a fill and a check plug on the differential.

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