[wsar10]

Hello all,
Let me start off by declaring my ignorance involving IHCC hydro units, I have zero experience with these and almost just as much knowledge about them.

My neighbor has a 1450 that will not move in forward or reverse, the hydro lift is dead aswell. This leads me to believe the pump is shot......

His son ran it low in fluid, One day he was mowing and when he went to park it all just quit....no noise or anything out of the ordinary just quietly quit.....

We pulled the seat pan and fenders to investigate.

We know this:
-Fluid is at correct level and clean.
-The linkage all moves as it should.
-You can hear the pump spin inside the hydro unit when you move the lever to F or R.
-we pulled the two check (or relief) valves on top of the unit and they are clean with good seals and the ball moves as it should in both valves.
-no leaks
-We can see the input shaft spinning beyond the fan and into the unit as it should

Where do we go from here?

How can we further troubleshoot ?

Is there a common failure with this type of issue ?

Thanks in advance for any help.....