Thanks. That helps. What I get for following the British Haynes manual!...Between the site and my performance products catalog I have figured out that I need to replace the tensioner adjuster screw assembly as I snapped the collar its attached to which in turn attaches to the tensioner....fun fun.

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88 300E (plus used to have 72 350SL, 83 240D)
Dad's got a 99 ML320 & 93 300SE...we're a Mercedes family !