I decided to take apart and inspect the auxiliary fan. The plastic cover snaps off.


A tab on the nose cone has to be lifted up before the nut can be loosened.


Once the blades are off, the motor can be detached from the frame.


Then the motor cover removed.


Then the armature slides out.

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DON'T MESS WITH MY MERCEDES!


1967 W110 Universal Wagon, Euro, Turbo Diesel, Tail Fins, 4 Speed Manual Column Shift, A/C
1980 W116 300SD Turbo Diesel, DB479 Walnut Brown, Sunroof, Highly Optioned, 350,000+ Miles