Yanmar YM 186D brake inspection and other updates.

In this video, I disassemble the brakes on my Yanmar YM 186D tractor. I also reveal a few other little projects I've completed.
Amazon link to the mirrors I installed.
smile.amazon.c...

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Are there any holes in the drum you could insert a rod to keep it from moving? Also, any plans on covering that hole above the brake assembly?