It's easy- - - -just install the self adjusting shoe expanders and the associated hardware from a later model Bendix brake. Anybody with more than three brain cells to rub together should be able to make it work just by looking at an assembled brake system with the self adjusters and making the older brake look just like the newer one. It would help to have both vehicles jacked up side by side with a drum off of each one.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!