Yes Pat,
It is in the forward portion. The first two pictures I posted show the metal lifting lever (silver & black), diaphragm (black circle in the center) and the keeper ring for the diaphram (crown ring is what I think they are called??)
Waiting till you have parts to check the size of the new keeper. It's likely easiest to snip the old one with side cutters for fast removal. I'm a bit foggy on that memory though. I haven't seen one get repaired in near forty years, but I recall Gramps cutting one to remove it all.
