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Discussion Starter #1
Can the tensioner belt pulley on the 1992 300SE (104.990 engine) be replaced without having to swap out the entire tensioner assembly? Mine is squeaking like mad and I've been told I can simply replace the pulley if the spring in the assembly itself isn't bad.

If it can be done, is there a sticky or a DIY thread telling how to do so?

PLEASE get back to me ASAP as I'd like to get this done before the thing breaks and takes out my radiator or something.

THANKS!!
 

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Discussion Starter #2
Okay....since no one seems to have ever replaced the pulley on the "old style" tensioner (1992 300SE) and posted how it's done, I guess it's up to me to be the first.

(1) Loosen the belt via the adjusting rod on the top of the tensioner.
(2) Remove the belt from the tensioner pulley.
(3) Remove the cap from the center of the pulley (pops right off easily.)
(4) Take a 6mm Allen wrench and remove the bolt from the center of the pulley.
(5) R&R the pulley.
(6) To reinstall, do the reverse of the above.

Takes about an hour or less and it's done. My tensioner was fine but the pulley's bearings were gone. Replaced it and no more noise!
 
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