Be sure you install the tensioner rod correctly (don't ask me how or why I know this!)

When you are taking it apart, take careful note of how everything is attached and lined up.

What I did was install the tensioner arm 180 degrees from the way it was supposed to be installed and after 60 miles from home, I lost the belt tension.

Haasman

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