I was told that when the car is hot, and you turn it off, a way to check the status of the fan clutch is to spin it by hand. A properly working fan clutch on a 440 should barely spin by itself.


Is this right? If not, what is a proper way of testing the fan clutch?


Thanks

 

This is what I found:

If you can't spin it by hand when the engine is off then you need a new clutch

If you can spin it by hand with the engine off and it spins for a long time then it is also bad

If you spin it and it spins for 1 or 2 revolutions then it is ok

 

It should have resistance to turning when hot if it's a thermal clutch. Some are not a thermal clutch and spin more free at higher rpms.

 

Check Step #9...