Independent Hydraulic Mower Lift
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Thread: Independent Hydraulic Mower Lift

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    Independent Hydraulic Mower Lift

    So I have ordered the components to install the hydraulic lift as well as the independent valve kit. I am taking my good sweet time as the weather is cold as heck and we typically don't get enough accumulation to warrant plowing. So this weekend was the hydraulic lift install. One thing I noticed is that the orifice plate that was provided in the hydraulic lift kit LVB26205, was not drilled. It is a solid plate. Can anyone tell me what the drilling is supposed to be in this thing? I have the capability of drilling it, but I don't want to get it too far off.

    Fortunately I was looking through Psrumors post on the independent valve install and realized what it was. I didn't realize it was the orifice plate since there was no hole in it. He has a photo of the orifice shown and that is when it clicked.

    Jeff
    psrumors likes this.
    2013 1025R FILB w/ 60D MMM
    1973 140
    1974 140

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    Interesting that it is solid and not pre-drilled. I hope someone has the answer cuz I really don't want to pull mine apart to get you the answer.

    Look over the instructions real well, I seem to remember the specification being listed in the valve kit. Of course I could be wrong.
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    Oh, and good luck. Take your time and it should all go pretty smoothly. When you're finished you'll look back and think it wasn't hard at all.
    1025r TLB w 60D MMM & Independent Lift
    SN 114287 Built April '13 received 8/21/13
    180 degree thermostat
    Omni Transformer w/ integrated weight bracket
    Single Point
    Ken's Bolt on hooks
    Artillian Forks (42")
    Full Compliment of Wheel Weights (340lbs)
    Custom Seat Springs

    Kubota 326H 72" deck ZTR

    Stihl MS361, FS250R

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    Keeper of the GTT Cookies dieselshadow's Avatar
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    I was hoping psrumors had the answer here with his previous experience. I'd call your dealer and have them call somebody (maybe in engineering in JD). Realistically I'll bet .030 is where I'd start for a restrictor sized orifice. That size seems to be fairly common in smaller hydraulic systems. But that's a WAG. Not official...
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    Quote Originally Posted by psrumors View Post
    Oh, and good luck. Take your time and it should all go pretty smoothly. When you're finished you'll look back and think it wasn't hard at all.
    It hasn't been too bad. Getting the left side bracket on the rockshaft was the hardest part so far. Part of that was because I had the wrong tips for my snap ring pliers. Probably would have helped if I had pulled out the mechanical lift instructions as well. Might have provided some insight.

    Worst comes to worst, I'll pull the pic of the orifice in your post, scale the plate and the opening using the pixels, and drill based on that. It will only be a speed deal. I can go small and if it seems ridiculously slow, open it up a size or two.

    I have the hydraulic adapters/fittings on the way for the single point install as well. I opted to try 45's on both ends of the interconnecting hoses so we will see how that goes.

    Jeff
    Last edited by jphavener; 03-02-2014 at 09:39 PM.
    2013 1025R FILB w/ 60D MMM
    1973 140
    1974 140

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    Oh yeah, if anyone has any information on how to set the pedal safety switch, that would be helpful. I kinda goobered that up when I tried to remove the damper. Didn't realize how it was all put together and I started turning the eccentric bolt/hex deal.

    Jeff
    2013 1025R FILB w/ 60D MMM
    1973 140
    1974 140

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    Quote Originally Posted by dieselshadow View Post
    I was hoping psrumors had the answer here with his previous experience. I'd call your dealer and have them call somebody (maybe in engineering in JD). Realistically I'll bet .030 is where I'd start for a restrictor sized orifice. That size seems to be fairly common in smaller hydraulic systems. But that's a WAG. Not official...
    Well, I scaled the photo using the pixels and guess what size the orifice comes up to be? 0.0288" to 0.0385" depending on if the bore is 3 or 4 pixels wide. Looks like I will likely just drill to the smaller dimension and call it good, unless I can dig up some better information before next weekend. I will check the instructions again, when I get back to them, and see if it is listed in there, as Psrumors suggested.

    Jeff
    Last edited by jphavener; 03-03-2014 at 06:42 AM.
    2013 1025R FILB w/ 60D MMM
    1973 140
    1974 140

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    Captain Hook Kennyd's Avatar
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    Most restrictors are .031" or a #68 drill bit.
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    Any updates Jeff? How's the install going?
    1025r TLB w 60D MMM & Independent Lift
    SN 114287 Built April '13 received 8/21/13
    180 degree thermostat
    Omni Transformer w/ integrated weight bracket
    Single Point
    Ken's Bolt on hooks
    Artillian Forks (42")
    Full Compliment of Wheel Weights (340lbs)
    Custom Seat Springs

    Kubota 326H 72" deck ZTR

    Stihl MS361, FS250R

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    I wish I was home playing with my tractor. In west Texas for work this week. Won't be home until Thursday night. Will get some updates this weekend!

    Jeff
    2013 1025R FILB w/ 60D MMM
    1973 140
    1974 140

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