Pulley and belt failure on '07 E63




Did that already happened to someone ?
Looks like the pulley A156 202 06 13 died and damaged the belt.
Do you know someone making those pulley in Alu instead of plastic ?
For Anyone out there in denial try to steer a 2 ton rhino when that belt falls off, next to impossible. First mod I did on both cars and by far the best. No cel either

By the way that was the whirling noise you heard for the last 1000 miles or so, you did not have a supercharger growin under the hood.
Last edited by Critter; Nov 2, 2014 at 12:03 PM.
Bearing at about 25-30K miles will be prone to failure, heats up and melts the pulley with sometimes little advance notice unless you have an ear for the sound of you engine. Posted this before, must have for a M156 motor.
Check out their website Weistec Engineering.
Sounds like an obvious choice. Price is 399 on the website by the way :thumbs:
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Install is pretty simple (one bolt just needs to be a bit shaved to fit the cover) but space is limited. I did not remove the fan and worked with my sleeves up ... until I was totally frozen (I worked outside and it's winter here in France).
Everything was finished except the belt was not perfectly centered on one of the pulley, so I did put my arm again to adjust the belt and my sleeve got stuck in the small platic piece of the thermostat ...

... and broke it

So I had to replace also the thermostat

The end result looks like that
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Other owners would be wise to change them out before failure occurs and for sure it will.





