Posted by IH fan on July 29, 2010 at 17:21:47 from (70.249.67.58):
In Reply to: MTA hydraulics posted by c1802362 on July 29, 2010 at 14:44:27:
A standard check valve wouldn't work. When you lift the plow it could help to hold it up..... permanently. However, there is such a thing as a "pressure release" (maybe not the correct name, but I've been retired for 8 years and sometimes it takes a while for these things to come back) check valve that will free flow one way and then a pilot line from the "down pressure" side will unseat the check and allow flow the other way. Not a very practical thing in this case unless it could be plumbed in on the tractor side of your disconnects. I used them in a few cases in hydraulic systems on factory machines, but never on a mobile machine that I recall.
If you are sure it's not a bad cylinder, I'd dig into the tractor valve and get it fixed.[/code]
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