As I think more about this, if I find after removing the valve cover that the chain is off by one tooth, will I be able to remove the tensioner and then slip the chain one tooth without pulling the cover off the front of the camshaft?

Thanks for any help you may offer,

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Larry Bible
'01 C Class, Six Speed
'84 Euro 240D, manual, 533K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in
Mercedes automobiles