As a footnote to all this, I had to change the belt tensioner on the 93 190e 2.6 recently. The center rubber looked good and what confused me was that the inner portion rotated inside the housing.

Weird. It took several minutes to finally figure out what was wrong. It wasn't until I noticed it was not in the same orientation as the replacement and then turninging the bad one with a long wrench did the failure appear.

I would always recommend checking for this.

Haasman

__________________
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)