Posted by Shawn in West MO on February 08, 2010 at 10:19:34 from (144.73.127.75):
I purchased a 560 here a couple of months ago and an trying to get some of the bugs worked out. The hydraulic pump squalls for about 0.5 seconds whenever you let go of the hydraulic handle after actuating the cylinder. It is quiet as long as the handle is fully actuated or not actuated at all, but if it is only pulled slightly (like to move a cyclinder slowly) the pump squalls and it pulls the engine down. I thought maybe the unloading valve was sticking so I took it apart and cleaned it up. When in the valve I found two washers under the spring, which I assume was a previous owner"s way of increasing pressure. I removed them with hopes this would fix the problem, but it didn"t help. Also, I don"t think it would affect anything, but the fast hitch has been removed. All of the mechanism to the tel-a-depth is still on the side of the tractor, but is not hooked to anything and the linkage from the handle is also unhooked. It seems this shouldn"t affect anything since both sides are unhooked and due to the differential gears the spool cannot be moved with both sides unhooked. I thought maybe it would be worth adding. Any idea what could be causing the noise?
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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