5525 Hydraulic motors again

[DK_Farms]

We rebuilt a sprayer that has a hydraulic driven centrifugal pump on it. I know, I wanted to switch to PTO but my partner didn't want to spend the money. I don't have the deluxe SCV with the motor setting and detent options, just the standard 2 SCV pack. JD came out with an adapter that replaces the hydraulic oil filler tube and provides a zero pressure return point back to the sump. I figured that and a rope or bungee cord would get me in business. Thank you JD. I ordered the thing but it doesn't quite fit. First off, it has Made in China stamped on it in 3 places. The outside diameter of the tube is slightly smaller than the original so it doesn't fit tight in the rockshaft cover. And, the wall thickness of the tube is thinner so when you put the filler cap tube in it, it wobbles around. I don't want to chance a jury rig. Dealer is clueless naturally. They didn't even know JD made this thing. Alternate Method??? There is a screw plug on the side of the rockshaft cover that appears to lead directly into the sump, at the base of the filler tube. I can see the back side of the plug when I look down the filler tube. I was thinking about removing the plug, drilling out the middle of it, and tapping it for 1/2 inch hydraulic hose connection to use for a return. Has anyone else tried this method? The dealer service manager said he didn't see anything wrong with it (yes, it's out of warranty). Thanks in advance for the input.
Ken

 

[Zebra5]

I see no reason not to use this plug for your return. I would check and see if there is an adapter before I drilled the plug, once you determine what the threads are.

 

[Zebra5]

Check you owners manual. I saw where they reccommend using that plug and say parts sells an adapter to replace it. Check in the SCV section.

 

[radman1]

Before you use that pump, you need to figure out a few things. I am fairly sure you tractor is an open center hydraulic system and closed center systems are used to larger and more expensive tractors. Based on our farm equipment, open centers tractors don't work the best on hydraulic systems if the flow is restricted on a constant basis with high line pressures. We have hydraulic pumps on sprayers and planters that need to run off closed systems which have controllable flow rates. Our sprayer has folding booms, height adustable booms and a few other options that cannot use an open center hydraulic system.
If you are using the hydraulics just to get spraying pressure for the unit, your hydraulic pressure will be low and you can control the amount of flow at the sprayer side. If that is true, then you should have no problems.