Hello everyone, I currently have a 963G in the shop the owner was complaning about it overheating this past fall. I was wondering if someone knew if the hyd. driven fan is switched on and off according to engine temp. I have tried unplugging the solenoid on the fan drive motor and it dosen't seem to change the speed of the fan. The fan dosen't seem to have much force and can even be stopped with a stick. I have taken care of the simple stuff - cleaned radiator, etc. I believe the problem is with the fan. Any help would be apprieciated. Thanks, Tro