Originally Posted by VinceU
John have you had any luck with this overheating problem?
Sorry for the slow response. I posted questions on a couple of forums and forgot to update here...
The fan hub replacement solved the overheating problem. It's not a job I want to tackle again NOR is it one I would recommend other do-it-yourselfers tackle IF you have the MBE engine.
Pulling the radiator and shroud aft to gain enough room to access the fan and fan clutch was a major PITA. But, as they say, all's well that ends well. The Berk no longer overheats at interstate speeds. Engine temp increases on steep hills, but drops quickly without setting off any alarms. I did not replace the thermostat, but I did flush the cooling system and fill it with approved coolant. My thanks for everyone's suggestions during this project.