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Old 01-29-2003, 08:28 AM
ctaylor738 ctaylor738 is offline
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Join Date: Apr 2000
Location: Falls Church, VA
Posts: 5,316
The tensioner is on the very front of the cylinder head, well-hidden by the AC compressor and its bracket. In fact, there is a hole in the bracket for access. You will need to remove the compressor. There is a plug that covers the actual tensioner which requires a 17mm hex key to remove. There is an o-ring that seals the plug to the head, and my bet is that is what is leaking.

The cam box is a pain because you need to remove the cam sprockets, rocker arms, guide rail, and the tensioner to get it off the head. And it's heavy! I can't think of any reason why it would leak unless the bolts holding it to the head are not tight.
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
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