Organicfarmer: I've just gone through the 7 pages of trouble shooting in the IH Blue Ribbon service manual. They don't mention a situation when one control valve works and the other doesn't. I must admit I've never had this happen myself, and being an old farmer we only know those things well, that went wrong. I just got home from some extended travel, thus I am a bit weary. I see the Hydraulic system in this Blue Ribbon service manual contains 24 pages of reading including the trouble shooting section. Just too much reading for me tonight. My first reaction, has the control lever come unhooked somewhere between lever and valve. Bear in mind, there are two more pivot points on that control linkage, up behind the rockshaft arms, that you can not see easily without removing rockshaft assembly. I'll put it this way, it's either something simple like broken or unhooked linkage, or you'll have to delve into the unit. If your going to do that you may as well get the $100. rebuild kit from CaseIH, and install it at the same time. With that said, I'll turn you back to scotty, he has the experience of installing one of those kits.
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