Posted by ldeikis on February 22, 2010 at 08:51:04 from (74.38.159.27):
Hey guys. You all got me through redoing the brakes on our other G last summer, hopefully there's some help available here. We've got a G with the OEM rear furrowing bar cylinder and bracketing, rigged to lift a homemade bar. This whole rig was built early last summer, which was when the farm got the tractor. The "furrowing" bar is basically a piece of square stock with a couple brackets for sweeps welded on, so the thing can clean up the wheel tracks while it cultivates the bed.
All summer this worked fine--you had to give it some throttle to get it to lift the bar, but it could do it every time. But the cylinder was leaking, just a bit, but enough to make a mess of the ram and I was worried about abrasion and it getting worse. So I ordered the packing material and pulled it all apart, tapped out the old packing, pressed in the new in the same order, and reassembled it all.
It doesn't leak now, but it can't lift the furrowing bar! It tries--you can see it heave--but it doesn't have enough ooomph to do it. Any ideas?
I'm wondering about an air bubble trapped in the lines or cylinder? After hooking the hydraulics back on but before mounting the assembly, I manually compressed the cylinder and, holding it below the level of the tractor, ran it through several extend/retract cycles hoping to burp it. Not sure if that's enough with a 1 way cylinder though. Does it need to be bench bled or something? The tractor's full of fresh hytran as of November or so, and I know the level's good.
Thanks for any pointers--I'm going off to work for another farm this season and I'd really like to leave this little guy in good health.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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