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  1. #1
    Platinum Member
    Join Date
    Oct 2005
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    649
    Location
    PA
    Tractor
    NH TC40DA 2002

    Default SLOWING DROP RATE

    I know that I have an adjustment knob below seat on TC40DA to slow drop rate of hydraulics. How useful is this adjustment??
    2007 TC40DA, Supersteer, ANBO Grapple Rake with WR Long Joystick rocker control, Landpride 72" Box Scraper, 84" Rake, 72" Disc Harrow,72" Spring Tine Harrow, 72" Woods Rotary Cutter, Pallet Forks, 60 gallon Cropcare 3-pt sprayer, 72" 3-pt chain drag,Vicon 3-pt spreader

  2. #2
    Super Member JerryG's Avatar
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    Apr 2000
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    7,191
    Location
    Northwest Arkansas
    Tractor
    MF 1440-4 PowerShuttle

    Default Re: SLOWING DROP RATE

    No matter the weight of the implement on the back, you can make it drop like a rock or drop so slow that you can hardly tell it is moving.

  3. #3
    Epic Contributor Soundguy's Avatar
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    Mar 2002
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    Central florida
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    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: SLOWING DROP RATE

    As JG says. this valve controlls how fast oil can exhaust/escape from the 3pt lift cyl.

    Soundguy

  4. #4
    Elite Member schmism's Avatar
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    Jul 2006
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    4,925
    Location
    Peoria IL
    Tractor
    New holland TC(33)

    Default Re: SLOWING DROP RATE

    Quote Originally Posted by JerryG
    No matter the weight of the implement on the back, you can make it drop like a rock or drop so slow that you can hardly tell it is moving.
    i dont know about that.... when ive got my MMM on (which hangs off the 3pt) with my rear blade its **** near impossible to get the valve tight enough to get a controled decent on the rear blade. If you do get to almost stop, even the smallest fraction of a turn will result in a very large increase in drop speed.

    with out the MMM and a light impliment, the control is very precise.
    Steve - TC33D 4x4 FEL, dual rear remotes with toys

  5. #5
    Super Member JerryG's Avatar
    Join Date
    Apr 2000
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    7,191
    Location
    Northwest Arkansas
    Tractor
    MF 1440-4 PowerShuttle

    Default Re: SLOWING DROP RATE

    Quote Originally Posted by schmism
    i dont know about that.... when ive got my MMM on (which hangs off the 3pt) with my rear blade its **** near impossible to get the valve tight enough to get a controled decent on the rear blade. If you do get to almost stop, even the smallest fraction of a turn will result in a very large increase in drop speed.

    with out the MMM and a light impliment, the control is very precise.
    The difference could be caused by a couple of different things. One could be that the parts are just not broken in to where they mate well enough yet. I wouldn’t think that they would need to be broke in, but they may need to be. The other reason could be a difference in precision between different manufactures for that specific valve. I know that the last two compact tractors that I have owned can be adjusted to a very light implement or to a very heavy implement for a fast speed or for a very slow speed. I have one implement that weights less than one hundred pounds and I can make it go down so slow that you can hardly tell that it is moving.
    Some how I missed that you had both implements on the tractor. Maybe it is because of the leverage from that amount of weight.

  6. #6
    Elite Member thcri's Avatar
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    Jan 2003
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    4,648
    Location
    Minnesota SE
    Tractor
    New Holland TC29D, 2001

    Default Re: SLOWING DROP RATE

    On my TC29D I have played with that valve and it just doen'st seem like it does anything with the speed of my hydrualics. There is drag on it so I am assuming it is turning something but I just don't see any difference. It may be changing.

    murph
    "This country was founded and built by people with great dreams and the courage to take great risks."

  7. #7
    Super Member RickB's Avatar
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    Sep 2000
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    7,307
    Location
    Eastern NY
    Tractor
    Case 885, Ford 4000

    Default Re: SLOWING DROP RATE

    The valve does not affect the hitch raise rate; only the drop rate. They are shipped from the factory fully open. It may take what seems like forever to get to fully closed which should prevent the hitch from dropping with any load short of opening the safety valve. From the fully closed position it only takes maybe 2 or 3 full turns to get the maximum drop rate. A heavy implement such as a rotary cutter will cause the drop rate valve to be very sensitive, maybe 1/4 turn will have a huge impact on drop rate once you get the needle valve close to its range of effectiveness.

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