Thank you, gentlemen. This is great information. The planter is a 7300 and will be run as a 4-row. I'd prefer the simplicity of a 7000/7100 right now as I'm learning but the 7300 is what is available to me through a fellow rookie and good friend. I'll look around for a PTO drive. I've never had to deal with the intricacies of the hydraulic system as I've only used it in the past for the basics.
A few questions: 1. Closed-center vs. open-center - is it correct that closed center means that hyd flow is shut off when the lever is centered? 2. Flat faced fittings and return oil - how do you avoid returning the oil through the SCV? Do you just mean using a one-way flow fitting to avoid that event if you hook it up backwards or do you mean somehow plumbing the return straight back to the reservoir? 3. I read the bit about using the draft control to turn the motor on and off in the JD manual but I don't understand how that affects the remotes. My draft sensing mech. is currently inop so I don't use draft and have never noticed if I lose hyd remote pressure when in the draft pos.
Thanks for your help. You've already prevented me from blowing out that motor!
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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