w210 E240 metal filings & grinding around pulley area

[sherco450]

Haven't had a chance to have a closer look ,bucketing down with rain. Started the v6 this morning and grinding noise was heard. Shut down the engine, lifted bonnet and saw a heap of metal filings around tension pulley /crank shaft area. what will be the worst . lm aware of the pulley tensions common failure. Any other. thanks

 

[V12]

The crank shaft pulley can let go and grind it's way through the timing cover if you're not careful.

 

[sherco450]

OUCH thanks for the heads up ..

 

[grober]

ALMOST CERTIANLY THE CRANKSHAFT PULLEY ALSO KNOWN AS THE CRANKSHAFT HARMONIC DAMPER . It has a composite construction with an inner hub and outer rim joined by a rubber molding in between-- this fails allowing the outer bit to " wobble"causing the grinding damage V12 describes- ultimately it will let go completely-you may be looking at a new front timing case AND sump if its that!!!

http://www.mbclub.co.uk/forums/engi...ley-recall-us-m112-v6-engines-why-not-uk.html

AND

https://web.archive.org/web/20070218093610/http://www.whnet.com/4x4/pix/SC2005020003.pdf

 

[sherco450]

All good no major damage . Tension pulley crapped itself . l fitted a tension pulley off a low km w210 for $50...

 

[ShinyF1]

Happened on my IL6 320CDI too. Not too expensive to have it replaced