Ok. Replaced the hose. No Joy ! I also discovered that the control switch or valve was not connected. I ran hose from it's port to the botton port on the motor. Still no joy ! Is the control valve all in one direction and variable for speed ? Or does it have a center off position ? I hear vaccuum hiss when the valve is in a full counter-clock wise position. No wiper motion. A busted diaphram in the motor ?

Steve