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  1. #1
    Silver Member
    Join Date
    Jul 2009
    DFW, TX
    NH TN75, Kubota M9960, Kubota M7040, NH T4.85

    Default Hydrualic Pump Install

    Having issues with my hydraulics and if it turns out to be the pump is that a Do it yourself job for a not so mechaniclly inclinded person? TN75

  2. #2
    Elite Member JC-jetro's Avatar
    Join Date
    Jul 2006
    Ford 1700, Kubota MX-4700

    Default Re: Hydrualic Pump Install

    Quote Originally Posted by Bob Ha View Post
    Having issues with my hydraulics and if it turns out to be the pump is that a Do it yourself job for a not so mechaniclly inclinded person? TN75


    I have done pump overhaul on my tractor and found it to be an easy task. I was previously familiar with gear type positive displacement pumps so nothing was new to me. Take a look at the link below, about the middle of the first page you start seeing pump info. It might give you some inside. It is certainly a doable project.

    Ford 1700, 2wd.
    Kubota MX-4700DT, Gear transmission with LA 884 loader, Q/A and HD bucket.
    60" Woods Rotary Cutter, home made (3-pt boom and a Row Hipper) ,King Kutter( 5 ft Tiller,Middle Buster,Single Row Cultivator,Carry-all, 5 ft blade, 6 ft Landscaping Rake ,30" Dirt Scoop and a 4'x4' Drag Harrow)

  3. #3
    Epic Contributor
    jinman's Avatar
    Join Date
    Feb 2001
    Texas - Wise County - Sunset
    NHTC45D, NH LB75B, Ford Jubilee

    Default Re: Hydrualic Pump Install

    Bob, replacing a pump is something I would do, but I have the Repair Manual for my tractor. Before you make a leap and buy a new pump (VERY expensive for your tractor) why not check with another dealer about warranty work if it is still in warranty. In the DFW area, there are lots of NH dealers. If your dealer is going out of business, somebody else will be taking their warranty work.

    In open-center systems, if something is stuck open before the 3PH circuit, it will stop the 3PH from working. This is true on my tractor if one of the remote levers is stuck. I believe on the TN75, the loader is actually run by a rear remote that is actuated by cables. If the loader joystick is off center or one of your remote valves is out of center, it's likely that your 3PH is being eliminated by hydraulic priority. I'm just not that familiar with your tractor.

    I think talking to a service guy at a NH shop is your first choice since your tractor is in warranty still. The next best thing is send a PM to RickB who is a Senior NH Tech and a TN75 expert. He may have a suggestion or two, but ultimately, this is NH's problem if you are still in warranty. I would not touch that hydraulic pump. Get some help; you've paid for it.

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