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68c10airstream · 01-21-2018, 11:57 PM

I was a dealer mechanic when the mechanical fans (without a freewheeling clutch) were the norm and if there was a suspected alternator or water pump slipping i would grab the fan blades and see if i could turn the engine over. If i couldn't the belt was not tight enough. I noticed your alternator looks like it is at the end of the adjustment slot, so try this trick and see what happens. Obviously engine turned off, take a big screwdriver or prybar and wedge it between 2 of the fan bolt heads at the face of the water pump and try to turn the engine over and see if it slips. Good luck!!

01-21-2018, 11:57 PM	#36
68c10airstream Registered User Join Date: Mar 2013 Location: Marquette michigan Posts: 828	Re: Overheating issues I was a dealer mechanic when the mechanical fans (without a freewheeling clutch) were the norm and if there was a suspected alternator or water pump slipping i would grab the fan blades and see if i could turn the engine over. If i couldn't the belt was not tight enough. I noticed your alternator looks like it is at the end of the adjustment slot, so try this trick and see what happens. Obviously engine turned off, take a big screwdriver or prybar and wedge it between 2 of the fan bolt heads at the face of the water pump and try to turn the engine over and see if it slips. Good luck!!