One of the greatest of all writers about our American government, and the dangers it faced, was the French writer and historian, Alexis de Tocqueville. He toured all of America in the early 1800s, and after some years wrote the great two volume book, Democracy in America.
A fan clutch is supposed to be a fluid coupling device that allows the fan to rotate less than the engine speed. The fan clutch should engage before the engine gets up to 220F. A standard cooling system fan clutch should spin at 33% of water pump speed (RPM) when not engaged and 75% of water pump RPM when engaged. A heavy duty cooling system fan clutch should spin at 33% of water pump speed (RPM) when not engaged and 90% of water pump RPM when engaged. Unfortunately, a fan clutch can slowly empty its coupling oil overtime and often seizes. (the oil also can gel/thicken and grab).
I tried to spin mine but felt a lot of resistance and it would go only maybe 1/6 or 1/4 at best away around, nowhere... show more I was wondering if you try to spin your fan/fan clutch by hand is it suppose to make like at least one revolution around? Im not talking about really hard just a good spin when the engine is off? I tried to spin mine but felt a lot of resistance and it would go only maybe 1/6 or 1/4 at best away around, nowhere...