Automatic tentioner pulley for the serpintine or V belt ML320 2002

[Smith007]

ML320 2002
If one has the special tool and removes the pulley. Can one re attach it?
The reason why I asked was that the parts gentleman at the Dealer spoke of "PEENED" or "PEANNED" and that once its off you cannot re-attach but purchase a whole new auto tentioner?
Any thoughts Ideas

[Lee Wireless]

Forget it. By a new unit. I tried the same thing on my ML320 and it isn't worth it.

[supradupe]

a new tensioner only cost around $70. just get a new one

[Smith007]

turned out to be an external torx with a littel pin in the center, I purchased the speacial torx and was able to retighten same