Wow thanks, that would have been much easier...I fought with it for about an hour...trying to thread it around each pulley.

The image you linked is a 603 but the 606 is pretty much the same. They both share the same tensioner arrangement where you use the tire lever in the black plastic block to slowly release and then reapply the tension.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech