According to my owners manual, these are indeed self adjusting. It states if new shoes are installed, be sure they are pushed completely to the inside over the self adjusters. Once drums are reinstalled, pump brake pedal vigorously to set.

__________________
‘84 300TD “Mountain Goat”
'62 300d Adenauer-350 Chevy - "Max"
'15 VW Passat TDI
'16 Dodge Ram 3500 - Cummins w/6-speed
'68 Mustang fastback
'55 T-bird
‘63 Studebaker Hawk