The little cup, back up washer and 0-ring are right inside of the threaded portion on that lower one . If it has none, no wonder it leaks. Has to have an o-ring inside for pin to seal on. If you have a service manual it will show how you pull the cup out of actuator. And, yes, you screw in to increase unlatching pressure. Here is how I do a quick adjustment of the pressure to suit my own needs. After valve is fully assembled, engine running, lower hitch all the way, put position control lever all the way down into action control which dumps most of the oil going to aux valve , pull valve to latch, then pull position control lever to raise position and valve should unlatch. Keep turning set screw in until it will not unlatch, and then back it off again until it consistently unlatches. You are supposed to use a flow rater of course but that is another story.
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Today's Featured Article - New Hitches For Your Old Tractor - by Chris Pratt. For this article, we are going to make the irrational and unlikely assumption that you purchased an older tractor that is in tip top shape and needs no immediate repairs other than an oil change and a good bath. To the newcomer planning to restore the machine, this means you have everything you need for the moment (something to sit in the shop and just look at for awhile while you read the books). To the newcomer that wants to get out and use the machine for field work, you may have already hit a major roadblock. That is the dreaded "proprietary hitch". With the exception of the
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