2294 and 4910baler

karl h

Member
Has anyone out here used a 94 series tractor with a Hesston 4910 Baler? The baler is heating the hydraulics, and a neighbor suggested that since I have the return line plumbed to dump right in the transmission I should just change the baler to an OPEN center configuration. He thinks this will help with the heating. Any thoughts?
 
I know nothing of the baler you are running but I know the closed center systems do not like running full flow all the time, I have seen several pumps taken out by tying the lever back and running through a extra valve, mEl hopefully will chime in or one of the others here that will have a answer for you
 
If your baler has a Closed Center system, there is a pilot valve that controls return flow to the sump. Since you plumbed the return with no restriction/back pressure which a closed system would have, the pilot valve isn't opening and all return oil is being forced through the main relief and then back to your tractor. I'm not able to tell you how to deactivate the Closed Center pilot valve. It may be as simple as adjusting a lead screw in the valve body to mechanically open the pilot valve, to allow free flow back to your tractor.
Loren
 
I know how to change it back to a open center setup. Your analysis makes perfect sense, I didn't think about it going through a relief valve all the time...that will add some heat for sure!
 

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