W210 E320 cdi alternator pulley...


MB Club Veteran
Mar 5, 2009
2005 W215 CL500.
...fell off!!!

Following this thread ( http://www.mbclub.co.uk/forums/engine/117207-w210-e320-cdi-alternator-pulley.html ) posted yesterday. Today the pulley fell off.

The pulley started chirping on Sunday. On Monday my Indie advised it was the alternator pulley. I started my research yesterday re: getting a new one. But events overtook me.

Last night the noise became a constant grinding which my daughter said could be heard a mile off. So, I cancelled my diary this morning and had my wife follow me to the garage.

On the way the red alternator warning came on, so I congratulated myself for going to the right place. Then the power steering went off. Then all went quiet, followed by a rattle and something hitting the underside of the car. So, I guessed the belt had come off (and maybe the pulley too). I was only 2 miles from home with a mile to go, so the engine was only warming up...but the temp then started to rise quickly.

I drove on.

By the time I got to where I was going the temp was just below 100.

We opened the bonnet, the belt was indeed off...and so was the pulley.

Anybody ever had a similar experience?


Authorised Forum Sponsor
Feb 8, 2007
Portsmouth, Hampshire.
E55K SL500 E300Hybrid E250X3 Viano C55 E450Cab A180 Smart 44 Brabus
Yes, my ML last week did the same.

Seen it a few times now.

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