FWIW:
If you didn't know, those old Sundstrand Hydro's were used in a boat load of Mobile vehicles, way to many to list.
That said, some needed the input shaft rotation changed because of driving off engines that used the PTO end of the crankshaft unlike Cub that used the Flywheel end of the crankshaft.
To change the input rotation, just turn the charge pump 1/2 turn and bolt it back on.
Yes it is as easy as that.
If one tries to drive the input shaft reverse of what cub's rotation is, it will not
operate, unless the charge pump if flipped or turned.
in other words,
the notch on the one ear of the charge pump mounting bolt flange, needs to be on the other side.
Clear as mud?
Now that said,
it is not advisable to run cub differentials reverse of what they were built for,
as the ring and pinion, being driven in reverse direction, tends to stress the snap ring on the differential pinion shaft small end,
as the pinion is now being pulled into the ring gear instead of being pushed away with the thrust no longer being on the tapered pinion bearing.
Best to use the hydro's and differentials as designed as far as rotation, unless you are only using the hydro's and some other differential setup.
Hope I've not confused you more.
