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Old 10-08-2009, 10:37 PM
Keif Keif is offline
Master Tinkerer
Location: Houston, TX
 
Join Date: Mar 2008
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Mein Auto: 2007 Alpina B7
A very small bit of movement is normal with some milles, but much more and it's time to keep a closer eye on the pump (actually the bearings, but same difference). As our cars start to get up in mileage, it's good at every opportunity to spin the various pulleys (to listen for noisy bearings) and wiggle them like you did (to check for play / looseness).

Any ol' mechanic should be able to wiggle the fan and let you know if the pump has too much play, but generally everything should feel pretty tight when you wiggle the top of the fan lightly toward the front and back of the car. Sorry, I know that was pretty vague...so...generally the fan shouldn't move more than maybe a few millimeters. Hope this helps a little.
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