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HM Hydraulics--again
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Posted by Allan in NE on September 17, 2004 at 04:05:52 from (148.78.243.26):
Mornin' All, Can someone help me understand these old systems a little better? I've been reading here many times, and from a lot of pretty sharp guys, about that left rearward facing hydraulic port as being a "delayed port", so that the rear gangs of the cultivator would lift a bit later than the front gangs as you came to the end of the field. Okay, just how was this accomplished hydraulically? How did it work? What made that port delay? And secondly, I've never heard of a cultivator that had a separate cylinder just for the rear gangs. All the old cultivators I was ever around used two cylinders; one for each side. These cylinders were mounted in such a way that they pushed forward from the rear axle against a lift tube on each side that lifted each front gang of the cultivator independently. The front gangs, then in turn, lifted the rear gang mechanically using a spring-collar arrangement at these same lift tubes. The position & adjustment of these spring-loaded collars at the left and right lift arms controlled the rear “delay”. This is how IH’s 2 row wide corn/potato cultivators and the 6 row narrow beet/bean cultivators worked anyway. 6 row bean cutters worked in the same fashion. Can someone shed some light on this for me? What cultivators used 3 cylinders? Was it that old, airplane like, front-mounted 4 row wide outfit? Thanks for your help, Allan
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