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Old 07-25-2010, 12:57 PM
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Join Date: Mar 2003
Location: Southern California
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Auxiliary fan frozen - can it be rebuilt?

...1988 190E 2.6 five-speed. One of the two auxiliary electric fans is inoperative.

It will only turn in the opposite direction of normal rotation and makes a "ratcheting" noise - click, click, click.... My guess is that a brush has worn out and the brush holder is contacting the commutator.

Has anyone ever taken any of these 80s to 90s vintage auxiliary electric fans apart and rebuilt them?


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Old 07-25-2010, 01:46 PM
mbzman's Avatar
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Join Date: Nov 2008
Location: Canada
Posts: 600
I found this thread here that may be helpful:

Aux Fan Maintenance
1989 300CE
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Old 07-26-2010, 12:16 PM
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Join Date: Mar 2003
Location: Southern California
Posts: 2,161
Thanks for the link to the Diesel Discussion forum. Those guys have it together.

I'll disassemble the fan and see if I can rebuild it. Fastlane only sells the fans for my 190E 2.6 as a pair - $222 for Bosch and $173 for an aftermarket brand.

Rebuilding is certainly a better alternative.


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