:welcome:to TBN
You can purchase a used scv assembly from a salvage yard or install a spool control valve similar to frt end loader control valve. Valve similar to FEL can be attached to fender or mounted on a stand bolted to rear axle. IF aftermarket spool valve be sure valve has closed-center plug installed. Photo below is how to attach FEL type spool valve.
Thanks Tx Jim,
I do have one more question, to connect the spool valve is it connected directly to the hydraulic pump? His has a round pump with several plugs around the circumference. How would we determine which is a pressure flow and which is a return?
Doug
Evidently you did not look at the photo I posted!!!!! For pressure one needs to attach line to rear of pressure control valve on RH side very close to hyd filter at fitting(parts key 4). Then return oil goes to either trans case or better yet a hyd filter ported cover.
Sorry I suppose I should have explained 1st photo in more detail. After being around these tractors since they were new I forget some folks are not as familiar with them as others.
Jim