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Author Topic: Deflection Pulley  (Read 887 times)

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January 19, 2018, 01:09:16 PM

marti

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Deflection Pulley
« on: January 19, 2018, 01:09:16 PM »
Be aware if your serpentine belt all of a sudden falls off!!, after a couple of hours of taking things apart and trying to fit a new belt I couldn't work it out why I had so much belt slack ???.....then I realised I was missing a pulley....sure enough #4 wasn't anywhere to be seen...snapped off...entire bolt sheared back to the alternator housing.....maybe a weak point waiting to happen worth getting a new bolt and doing just in case.....vehicle has just turned 100.000miles

http://www.realoem.com/bmw/enUS/showparts?id=FG02-EUR-10-2008-E71-BMW-X6_35dX&diagId=11_3961

January 19, 2018, 04:49:29 PM
Reply #1

X5Sport

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Re: Deflection Pulley
« Reply #1 on: January 19, 2018, 04:49:29 PM »
Yipe!  Not heard of this in any other X6 or X5 cars.
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January 19, 2018, 04:59:45 PM
Reply #2

Horizon

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Re: Deflection Pulley
« Reply #2 on: January 19, 2018, 04:59:45 PM »
Be aware if your serpentine belt all of a sudden falls off!!, after a couple of hours of taking things apart and trying to fit a new belt I couldn't work it out why I had so much belt slack ???.....then I realised I was missing a pulley....sure enough #4 wasn't anywhere to be seen...snapped off...entire bolt sheared back to the alternator housing.....maybe a weak point waiting to happen worth getting a new bolt and doing just in case.....vehicle has just turned 100.000miles

http://www.realoem.com/bmw/enUS/showparts?id=FG02-EUR-10-2008-E71-BMW-X6_35dX&diagId=11_3961

Is it this pulley
http://www.dft.gov.uk/vosa/apps/recalls/searches/expand.asp?uniqueID=6587F3236A4B0B5D80257AC3003EB76A&freeText=Blank&tx=

Sorry after checking your post/ real oem diagram looks like it's the other belt, as it says the tensioner for the power steering pump.
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January 19, 2018, 06:25:55 PM
Reply #3

marti

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Re: Deflection Pulley
« Reply #3 on: January 19, 2018, 06:25:55 PM »
Well yes Horizon, that must be the one as you do lose power steering all you dont lose is air-con, my garage is awaiting a new bolt from BMW which holds the pulley on and is special steel 150mm in length, none in stock and coming from Germany which is a good sign as they would have a few in stock if it was common....although mine is not on the recall list.....