John -
It should be tight. It's possible that the tolerance ring (A little
corrugated sleeve that makes the fan clutch a snug fit on the nose of
the water pump puley) needs to be replaced, but I'm guessing that it's
your water pump.
Loosen the belt, wiggle the fan again and see if the pulley moves. If
so, it's your water pump. If not, watch the back of the fan where the
fan clutch hides, if it wobbles relative to the pulley, it's the
tolerance ring. Moss Motors part # 071-239, about $5.
Chris kotting
ckotting@iwaynet.net
John Gottstein wrote:
>
> Is the plastic cooling fan supposed to have a little bit of wobble, or should
>it be
> really tight? My fan is attached tightly to the fan clutch, but the whole
>assembly
> seems to wobble two or three milimeters when I give the fan a push.
>
> I couldn't get my hand in far enough to see if the fan clutch can be
>tightened. Can it
> be, and does anyone think that this could merely be the source of my strange
>rattling
> sound. I've now ruled out the alternator?
>
> Thanks a lot,
> John
>
> 1975 Midget
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