[s-cars] Fred Munro's Serpentine Belt Tensioner R&R

[David Forgie]

The serpentine belt tensioner bearing can fail. The bearing can be replaced, as in the R&R linked
below.

However, the serpentine belt tensioner case can crack and release the tension in the coiled spring
(it's like the spring on a lawn mower pull start retractor) which will drop the belt right into the timing
belt and kill your engine. The PN for the entire assembly is: 054 109 479 - Belt Tensioner

Fred's R&R is here:

http://forums.audiworld.com/s4s6/msgs/51154.phtml

Dave F.