Question about BMW X5 Series

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The fan belt jumps up and down make a rattle in the car , i have try a smaller belt and have replaced the belt tentioner

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Yes had this problem before and i couldnt cure it either ,in the end i made a support using a length of flat steel ,cut a elongated slot in it by drilling a series of holes and then fileing them out ,used a old camshaft idler bearing off something else ,like all good mechanics i have a toot box full of old bits ,removed the plastic seal on the bearing and put a drop of engine oil in then some LM grease and refitted the seal and bolted the idler to the home made support ,applied a slight tension not a lot just touch the belt and a slight push down with one finger .Tighten the bolt and it worked .Its still running around now and the owner thinks iam the next best thing to sliced bread ,this sort of thing comes from years of fleet fitting and a boss who was in a concentration camp and didnt like spending money

Posted on May 03, 2010

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