I have a 743B that has stopped moving in one direction on one side. My repair manual says that it is in the replenishing valve or in the hydraulic motor. I was thinking I could do a pressure test at the motor to find out. What would be the best way to do this? Can I just remove the hose going to the motor and attach a pressure gauge? Or do I have to install some sort of relief/bypass mechanism? Also, how much pressure should I be getting at the motor? Thanks.