Without the Christmas Tree valve, the belly pump lever operates an internal valve to pressure the ports. With it, you lock it back and flow through the Christmas Tree full time. Then all control is with that valve.
The internal bypass is large and heats the fluid less than an external valve will so you might want to rig the system so you leave the belly pump lever forward unless you are going to use the hydraulics.
The pump is always engaged to the transmission lower shaft so it spins any time the clutch is engaged, whether or not the transmission is in gear. The PTO also runs off this shaft.
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Today's Featured Article - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I’m handing him tools and he says, "give me that..." and I’ve already got it in his hand or "hand me that....."and I’ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
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