Working on the selective control valve couplers on a JD 7510. Rather than replacing the complete coupler I’m just putting in new seal kits, which requires disassembling the coupler.
There is a special tool that can be acquired from Deere to help assist in taking the couplers apart. But how quick it would arrive is a big guess and I wouldn’t even want to know how much they’d want for it.
I sat down and thought for a few minutes and came up with a solution.
The hex end requires a 1” wrench to unscrew it from the rest of the coupler. With the rest of the couple being a round, smooth, oily, nicely machined piece it’s a little tough to break the hex piece loose.
I took the small ball bearings out of the round end. Then grabbed an old pioneer male coupler from the parts loft.
I knocked the center out of it with a punch then drilled a 3/16” hole straight through the side of the coupler.
That allowed me to run a heavy gauge wire through it which also ran through the holes where the ball bearings fit.
So the male coupler would still plug into the female coupler. The wire made the coupler stay in place, unlike when it would spin with the ball bearings in it.
Then as the first picture shows, the hex end of the male coupler allowed me to hold everything steady in the vise to put the wrench on it to break the hex end loose. This will also help with reassembly to tighten the hex end back to the proper torque.
May be kind of confusing if your not familiar with the whole concept. But it was a quick and cheap way to make a job a lot easier.
(You can see more about it in my thread, “Between the River Hills and the River Bottoms”)
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