Am still chasing a noise (pulley I think) and am up to having ordered new water pump. Should arrive Friday, I hope. If I spin (free-wheel) the A/C pulley there is a whiring noise coming from it. Can I assume bearing? If so, Can it be replaced on my model? W163154 112942 I read somewhere if I hold pulley with oil filter strap and loosen hex bolt in anti-clockwise direction, I am able to get pulley off. Has anybody done this? Thanks in advance.