Trying to run my 2 row cultivator to work on my '47 C.
Way back when I first got the cultivator roughly 10 years ago I put the cultivator put on and it picked it up great but wouldn't hold it up. Took then I took the cultivator off, cleaned the pump and dad had quit row crop so I didn't have much reason to wrangle the cultivator back on. Two years ago I tried it again, it wouldn't let it down. It picked it up great but would hold it up for days on end but would not let it down. Took it back apart this spring, noticed the thimble/spring follower for the relief valve had some burrs on the bottom so thinking it was maybe binding I sanded it a tad to smooth it up (worth a shot vs $70 for a new tiny little thing from AGCO) and tried it again this year.
Now it won't lift, it tries but just can't do it. It will turn the bare rockshaft and almost lift just the rightmost gang (chosen at random) high enough to lock it. With just the rockshaft I can stop it by hand and even push it back in. I can tell it wants to hold in the hold position. No relief valve chatter like I read about as if the valve is reliving at too low of a pressure (unless it is really quiet at very low pressure) I couldn't get it to move this last time when I had it apart but the relief valve seat is about 5/8" deep which is the upper limit in the book rather than the ideal 9/16"... which should increase rather than decrease pressure. It has Hytran in the transmixer. Only using the one little cylinder A-C graced it with on the factory made A-C two row cultivator for my sweet corn patch. Any ideas? I cultivated it today by unhooking and hooking up the lift rods today and it wasn't all that fun.
Way back when I first got the cultivator roughly 10 years ago I put the cultivator put on and it picked it up great but wouldn't hold it up. Took then I took the cultivator off, cleaned the pump and dad had quit row crop so I didn't have much reason to wrangle the cultivator back on. Two years ago I tried it again, it wouldn't let it down. It picked it up great but would hold it up for days on end but would not let it down. Took it back apart this spring, noticed the thimble/spring follower for the relief valve had some burrs on the bottom so thinking it was maybe binding I sanded it a tad to smooth it up (worth a shot vs $70 for a new tiny little thing from AGCO) and tried it again this year.
Now it won't lift, it tries but just can't do it. It will turn the bare rockshaft and almost lift just the rightmost gang (chosen at random) high enough to lock it. With just the rockshaft I can stop it by hand and even push it back in. I can tell it wants to hold in the hold position. No relief valve chatter like I read about as if the valve is reliving at too low of a pressure (unless it is really quiet at very low pressure) I couldn't get it to move this last time when I had it apart but the relief valve seat is about 5/8" deep which is the upper limit in the book rather than the ideal 9/16"... which should increase rather than decrease pressure. It has Hytran in the transmixer. Only using the one little cylinder A-C graced it with on the factory made A-C two row cultivator for my sweet corn patch. Any ideas? I cultivated it today by unhooking and hooking up the lift rods today and it wasn't all that fun.