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Old 02-08-2009, 01:34 AM
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glenmore glenmore is offline
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Join Date: Sep 2002
Location: Los Angeles
Posts: 963
Depending on the serial # of your car, it can take 2 different tensioners but from your description it sounds like you have the older style with the nut and adjusting rod. Looks like it is the same tensioner as on my 1991 300CE, part # is 1032000870 which looks like a M103 part. Before you can move the arm part of the tensioner (with the pulley), you have to release bolt that goes thru the center of the tensioner.

glenmore
1991 300CE
2000 C280
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