Can anyone please advise me how to loosen the belt tensioner? It appears different from common type which has a fixed torx bolt that turns the whole tensioner against the spring. Mine looks like it has a small damper/spring attached below the pulley. (part no.6112000670) There is a bolt on the pulley + 3 other torx bolts which appear to undo without turning the tensioner. Part can be seen here -MERCEDES-BENZ<br>MERCE E-CLASS (W211) E 220 CDI (211.006)<br><BR>V-Ribbed Belt T

Thanks

 

Please ignore my request - now found the torx socket hidden in the dark behind the belt and pulley after looling at picture again. Need to get a better lead lamp!