Bendix MC pushing nothing to front

So far as "the manual" that looks more like my 67 master. You can download a manual from MyMopar. You talking about pulling the residual valves? You can screw small sheet metal screws into the brass fittings inserts and pull 'em out with a claw hammer

I would think you could blow the forward piston out with air.

If it's stuck in there, you probably found the problem, LOL

EDIT some picchures LOL