Serpentine belt snapped on OM642

[PhilG]

Wife called me yesterday with kids in the car, no power steering and a smell of burnt rubber. Oh good.

Recovered the car home, had a look and there is bits of belt everywhere. I've got it all out. The top idler pulley has been completely lunched, all torn up. Part #9 on this diagram:

Q1. How does the cover #15 come off? It is so torn up on mine I have no idea.

Q2. In the event of this happening do I need to replace the tensioner as well as the belt and this pulley?

She was driving my CLS because her S-MAX has high pressure diesel pump failure! Yay! So down to no working normal cars.

 

[Auto-mobile]

Plastic cover just clips into the pulley, flick it out with a flat blade screwdriver, you get a new one with a new pulley anyway, this reveals a t45/50 bolt that holds the pulley on.

Your unlucky, not had a pulley failure on a 642.

Check tensioner tension and the pulley itself, I'd imagine it will be fine.