On the 1770 planters there is a big chunk of steel on the main frame that's got a bunch of hydraulic valves in it. If one of the pressure relief valves goes bad, your lift will do all sorts of funny things, like left wing goes up, left end main frame down, right side main frame up, right wing down.
It took 2 hours to diagnose it, then 3 hours to do 40 minutes of driving and steal one out of a new planter that was on the lot. That particular piece gets used in several applications and they didn't have one on the shelf.
And they sure are proud of their chinese castings. "MADE IN CHINA" cast right into them in big letters.
If the local Case dealer had more service capability and a couple of the parts were as heavy as on the JD we'd have a Case planter.
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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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