If you remove the pulley and the 2 external nuts at that end, you should be able to slide off the pulley end motor cover, and it should look something like the picture. You can do this without disturbing the brushes. Removing the 2 internal nuts on each side of the brush plate will allow complete disassembly. If you remove either cover do so carefully as there will be washers/spacers/shims on each end of the shaft, on the inside, up against the bushings. It's important to pay attention to the order of these washers.