viscous coupling

["BJ Martin" <bj_martin@hotmail.com>]

During investigation of a water pump noise, I find that there is "play" in 
the viscous coupling. I'm able to noticably rock the "bearings" in it from 
side to side and now I wonder if the noise was actually this rather than the 
water pump itself. At over $100, I prefer not to change it out unless it is 
really wearing out. Are these normally "sloppy"? thanks, brent
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