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  1. #1
    New Member
    Join Date
    Nov 2007
    Posts
    18
    Location
    Rochester, NY
    Tractor
    New Holland TC31D

    Default TC 31 3pt hitch question

    I have a TC 31 with a 72" mid mount mower that uses the 3pt hitch to raise and lower the deck. The past few times while mowing, when I go to raise the deck, the 3 pt hitch will not work, keeping the deck in the down position. If I shut the tractor off with the control lever set in the mow (down) position, then restart, the 3pt hitch control works again and i can raise the deck. If I shut the tractor off and put the 3 pt hitch control in the up position (I know this will not raise with the tractor off) when the tractor is restarted, the 3 pt hitch remains down, and cannot be raised.

    Anybody have any ideas as to what is causing this and how to fix it?

    Thanks

  2. #2
    Silver Member
    Join Date
    Jun 2006
    Posts
    109
    Location
    S.E. Michigan
    Tractor
    New Holland TC33DA

    Default Re: TC 31 3pt hitch question

    Sounds to me like you have something binding. On mine the rods with the small springs sometimes bind. I just rub some grease on them. Greg
    Greg in SE. Mich. TC33DA,SS,FEL,72"MMM,72"FB,
    72"RB,60"BB,5'RC,PHD

  3. #3
    New Member
    Join Date
    Nov 2007
    Posts
    18
    Location
    Rochester, NY
    Tractor
    New Holland TC31D

    Default Re: TC 31 3pt hitch question

    Sorry to dig up an old post, but I am once again looking for some insight into this problem. As I come to the end of my warranty period, I want all the pesky issues resolved on the dealers dime, not mine. The 3pt hitch works fine until I mow with it. After mowing, which takes approximatyl 1 hour, the 3pt hitch will not function. The motor does not whine or anything, it appears that the lever was never moved. After a "cool-down" period, it begins working as normal. I have changed all filters, and the dealer took it back for a week and tightened a loose plug on the loader control. Sure enough, though, the next time I mowed it did the same thing. On a side note, the loader works fine even when the 3pt will not raise or lower. The dealer is stumped and thinks I am mowing incorrectly.

    Has anyone witnessed this before?

    Thanks guys...

  4. #4
    Super Star Member brin's Avatar
    Join Date
    Jul 2009
    Posts
    10,526
    Location
    Georgia - Mt. Vernon by The Store just 5 miles east and right by the big oak tree then to the creek.

    Default Re: TC 31 3pt hitch question

    How you mow should have nothing to do with your 3pt going up or down. I would be sure to write a letter to the dealer and NH before you get out of warranty just to paper your file.
    Bob

    WORRYING does not take away tomorrow's TROUBLES, it takes away today's PEACE.


    NH - TC-29 , FEL, Bush hog, Bush hog brand finishing mower, Post hole digger, 6' Back blade, sub-soiler, Pallet forks, 20KW PTO Generator , 21 hp Murray Mower
    JD -3020 with FEL and a 16 HP. K-Grow Lawn Tractor (bought from K Mart 1994) and runs great !
    Clark 130 EN Mig Welder

  5. #5
    Bronze Member jedjoe's Avatar
    Join Date
    Oct 2004
    Posts
    95
    Location
    Warren, Connecticut
    Tractor
    new holland TC 35A 2004

    Default Re: TC 31 3pt hitch question

    Do you have the same problem with any other attachment in use?
    Last edited by jedjoe; 08-23-2010 at 02:54 PM. Reason: didn't see previous info

  6. #6
    New Member
    Join Date
    Nov 2007
    Posts
    18
    Location
    Rochester, NY
    Tractor
    New Holland TC31D

    Default Re: TC 31 3pt hitch question

    The lift arms and subsequently the mower deck will not raise. It seems to me that it is hydraulic oil temperature related, almost like a valve or bypass is becoming stuck when the fluid is hot. When the fluid cools, the valve or bypass returns to normal and the lift works fine. I am not familiar with the inards of the lift mechanism though, so i am only guessing at this point.

  7. #7
    New Member
    Join Date
    Nov 2007
    Posts
    18
    Location
    Rochester, NY
    Tractor
    New Holland TC31D

    Default Re: TC 31 3pt hitch question

    Update: I mowed this weekend, and sure enough the same problem occurred (an hour into mowing and the 3pt hitch arms will not raise). The dealer sent a tech to the house to look at it (while I was mowing). He saw the problem as it was happening, and hooked a pressure gauge to one of the connection points for the loader. He then "dead-headed" the pump while reading gauge pressure (around 1500 psi). After doing this a few times, the e pt hitch starting working normal again. He explained that there is a valve in the loader control that sends oil back to the tank, instead of routing it to the 3 pt hitch cylinder. His guess is there is a piece of dirt making that valve stick, diverting all oil back to tank.He instructed me to just dead head the loader valve whenever it does this to clean out the valve.

    Does this sound legit? He repeatedly said there is nothing wrong with the machine, but if it is a piece of dirt why has it been there since new, and not been removed with the 2 new filters that were put on? Sounds to me like they do not want to tear it apart to replace a valve while it is under warranty. My guess is that the valve sticks due to temperature, and should be replaced. Any thoughts?

    Thanks

  8. #8
    Epic Contributor jinman's Avatar
    Join Date
    Feb 2001
    Posts
    21,011
    Location
    Texas - Wise County - Sunset
    Tractor
    NHTC45D, NH LB75B, Ford Jubilee

    Default Re: TC 31 3pt hitch question

    Quote Originally Posted by Shark75 View Post
    Update: I mowed this weekend, and sure enough the same problem occurred (an hour into mowing and the 3pt hitch arms will not raise). The dealer sent a tech to the house to look at it (while I was mowing). He saw the problem as it was happening, and hooked a pressure gauge to one of the connection points for the loader. He then "dead-headed" the pump while reading gauge pressure (around 1500 psi). After doing this a few times, the e pt hitch starting working normal again. He explained that there is a valve in the loader control that sends oil back to the tank, instead of routing it to the 3 pt hitch cylinder. His guess is there is a piece of dirt making that valve stick, diverting all oil back to tank.He instructed me to just dead head the loader valve whenever it does this to clean out the valve.

    Does this sound legit? He repeatedly said there is nothing wrong with the machine, but if it is a piece of dirt why has it been there since new, and not been removed with the 2 new filters that were put on? Sounds to me like they do not want to tear it apart to replace a valve while it is under warranty. My guess is that the valve sticks due to temperature, and should be replaced. Any thoughts?

    Thanks
    It sounds to me like they are setting you up to say that it's trash in the hydraulic oil that you are responsible for. I wouldn't buy their "solution" for a second. I would demand that they replace the faulty diverter valve or HPL valve. My position would be that I would not use extraordinary means to remove trash that they have only guessed exists. What if it's something binding/sticking? I'd also want them to document that you are having issues within the warranty period and you are not satisfied with the tractor's operation. For the technician to even suggest that he "deadheaded" the pump is wacky. What he did was to put maximum pressure on the hydraulics so that the pressure relief valve lifted. That's something that happens all the time when you are using a loader anyhow. If he truly deadheaded your pump and suggests you do the same, you'll soon be buying a new pump. In my opinion, you are getting the run-around and I would be writing a letter to New Holland soon.
    Jim


  9. #9
    New Member
    Join Date
    Nov 2007
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    18
    Location
    Rochester, NY
    Tractor
    New Holland TC31D

    Default Re: TC 31 3pt hitch question

    I sent an email to New Holland this morning from the "contact" portion of their website. Is there another way to contact them directly?

  10. #10
    Epic Contributor jinman's Avatar
    Join Date
    Feb 2001
    Posts
    21,011
    Location
    Texas - Wise County - Sunset
    Tractor
    NHTC45D, NH LB75B, Ford Jubilee

    Default Re: TC 31 3pt hitch question

    There is an email and telephone number for New Holland Top Service. The email address is na.topservice@newholland.com and the telephone number is 866-NEW-HLND (866-639-4563).
    Jim


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