This is the service bulletin furnished by the A. C. Gilbert Co. to authorized service stations to aid them in the service and repair of American Flyer equipment. Specifically, this bulletin is for the Coal Loader 752A and 23785 Manual. The bulletin seems to refer to the American Flyer 785 Coal Loader as well.
American Flyer Accessory 752A and 785 Coal Loader was considered an Operating Accessory. Operating Accessories were very interesting Gilbert pieces. Often times these models include complex mechanical and signalling components and were designed to make the train layouts even more realistic.