That looks serviceable to me. Clean real good ( brake cleaner ) remove from the machine first. Remove that one way bearing, dont loose the little caps and springs inside, wipe down real good and grease the one way with isoflex only!! using green scotchbrite pads clean the surfaces and give them a good scuff. The rust suggest water was in there at one time. Inspect and clean the belt real good ( dishsoap ) and dry it well. In the first picture, I would replace the friction washer. again clean real well. After everything is clean you can judge better if the one way is damaged or not.