Posted by JD in Wanchese, NC on November 04, 2008 at 06:28:47 from (71.80.52.106):
the lift on my 574 d "hic-ups" when under load. i have changed hyd oil and filter...no change. it does this worse when the oil gets hot. according to the repair manual it could be a scored cylinder or ring problem, a cylinder cushion valve leaking, or a drop poppet issue. cushion valve is under the seat in the top cover. i have a dimantled 648 in my shop that i was "exploring" before i take the 574 apart, and the cushion valve does not come right out. it appears to be in a threaded bore but will only turn about 1 full turn. is there a procedure i am not doing or do i need special tools? the repair manual does not say. any help would be appreciated. Thanks, Jonathan
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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