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#1
12-12-2011, 07:38 PM
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784 Hydraulic Expansion
Well, I am not sure how to start off - but we'll just dive right in. Using the parts of a JD 400 (sorry about the bad word) I am going to expand my 784 to have 3 hydraulic circuits. I also picked up an extra lever for the control - this way I can add a NOS lever to the dash.
I had to pick up some new fittings, as the valve bank from the 400 has some different sized ports. They came in today, and I found it a good time to start this thread. I also have to get a new pressure line from the pump to the valve. I am taking suggestions on where to get a new line - the new line will need to be custom made, by me. I brushed the gunk off of the old one, taped off all the ports, and shot it with the first can of spray paint tonight. I would normally go for a little higher quality paint job, but the casting is rough and it will be hidden under a dash and fuel tank. Another point of excitement for me is that the new valve bank has the capability, on one valve, to float. Now, I understand that on most quietline models and the older 3-digit tractors, that there is a float built in between the lift cylinder and rockshaft. However, for those of you who know the 82 series, you know that the sleeve hitch rockshaft connects directly to the lift cylinder. In short, the lift cylinder provides up and down pressure through the sleeve hitch. This is where the float capability comes in handy. It gives me the option of using down pressure or floating instantly. You can see the valve that floats - signified by the longer pot on the bottom. I am sure some of you are curious what I would use 3 ports for. In short, I have some plans for a hydraulic dump trailer, a mid-mount grader blade with hydraulic control, and perhaps adding a hydraulic angle package to my 42" back blade. My dad always told me "if it's worth doing, it's worth overdoing." I have attached a few pictures of the valve bank as well as the "lucky tractor." Please feel free to give me feedback, suggestions, or concerns. I look forward to the project and hope that you guys will enjoy it also.
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CCC 784 w/ Triple Hydraulics IH 982 Cub Cadet Commercial H1748 Walk-Behind 50C Deck 42" Hydraulic Angle Front Blade 41" IH Rear Blade QA42A Snowthrower 
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