hydro-gear pumps

[Conman]

I just got a MTD zrt in my shop with two HYDRO-GEAR pumps part#BDR306R on it. The zrt will move back and forth just a little bit . I check to see if the bypass levers on the back where pull and they are not. I can see a lot of bubbles in the tank so I think it is bypassing. The zrt only has 317hr on it. THANKS CONMAN

[wriken]

did you recently do a oil change to the hydralic system? if so you got air in the system, will eventually work out of it, but it not good to have bubbles in pumps etc, like throwing sand in them.