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  1. #1

    Join Date
    Apr 2000
    Posts
    4
    Location
    Upstate New York
    Tractor
    JD 4400

    Default Tranny/Hydraulic Fluid Change

    Haven't done my first hydraulic fluid change yet, but I have a question or two that I hope you "experienced" folks can answer. I should tell you up front that I'm fairly meticulous on preventative maintenance ala Chalkley, Bird, and PaulB. I've been a true convert to synthetics in my gas vehicles for over 10 years, so I want to switch over to synthetics in my tractor as soon as prudent. I have a new JD4400 HST with 430 loader and 48 backhoe, but I'm confident all you kubota owners will still help me out here. (After all, I almost bought a 2710 at one point. [img]/w3tcompact/icons/smile.gif[/img]) First, when should I change the transmission oil over to synthetic? JD manual says change at 500 hrs, but I won't wait that long. The manual says break-in is at 50 hours and I'm inclined to change over then, as well as change filters, clean screens, etc. Second, which synthetic hydraulic oil do you all recommend? I use Mobil1 exclusively in the gas burners, but I'm favoring Amsoil ATH in this case. Finally, what do you do about the hydraulic fluid that is in the loader and backhoe lines & cylinders? Is it enough to be concerned about or am I being too anal here? There is almost a 7 gallon hydraulic fluid capacity on the tractor. Is it ok for the new synthetic fluid to mix with the remaining dino fluid in the implements? Thanks in advance for any help here (or tell me that this subject was covered adequately in the archives). Jeff


  2. #2
    Elite Member
    Join Date
    Mar 2000
    Posts
    3,239
    Location
    Eastern Virginia
    Tractor
    EarthForce EF-5 mini-TLB (2001)

    Default Re: Tranny/Hydraulic Fluid Change

    JeffM - we kubota owners are mostly a pretty tolerant bunch, even when it comes to JD owners. [img]/w3tcompact/icons/smile.gif[/img] Actually, pretty much all of us follow a live and let live policy when it comes to tractor brand selection, I think. The only people we don't understand at all are those who don't own a tractor. [img]/w3tcompact/icons/smile.gif[/img]

    You can change the transmission over at any time you like. I changed mine over at the 50-hour service. I've always used Amsoil ATH. I've never worried about the oil in the lines at all. It's not much. If you want to minimize it as much as possible, without going to too much trouble, just make sure all the cylinders are retracted before you drain it. There's no problem with mixing that little bit of petroleum with the synthetic.

    Have fun every chance you get.

    Mark


  3. #3

    Join Date
    Apr 2000
    Posts
    4
    Location
    Upstate New York
    Tractor
    JD 4400

    Default Re: Tranny/Hydraulic Fluid Change

    Thanks, Mark, for the reply. Good suggestion: retract the cylinders all the way. Should have thought of that myself, but I didn't. (And you know I'm just kidding about kubota owners - they're all great toys, er, I mean, tools.)

    Jeff


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