My left side hydro pump surges in and out and seems to work normal after about 5 minutes. I decided to change the fluid, filter , and purge. I think i have the bypass valve located. See picture below. I loosen the bypass valve a few turns with the engine in full throttle. I work the steering forwards and backwards about 6 times with the wheels off the ground, and the wheels still move slightly but not much. I then shut off the mower and tighten the bypass valve and the right side works fine but the left side still doesnt seem to have all of the air out. Its not making any strange noises so i dont think the pump is bad, i just might not have the bypass valve located or opened enough? Can anyone shed some light if i am doing this right or any suggestions. Thanks in advance.
Pump is a Hydro Gear PR-2HCD-GJ1G-XXXX
Pump is a Hydro Gear PR-2HCD-GJ1G-XXXX