Fig. 2.
No. 2 assists in opening and closing breech, examines for dirt, etc., and oils gas-check seat and threads of breech-recess. He commands: (1) "Home!"; (2) "Ram!" Observes scale on rammer, places second section of cartridge on front part of shot-tray, pushes fourth section into chamber, such that its base will almost clear the gas-check seat. If necessary, inserts loading-tray and sponges, assisted by No. 10.
Fig. 3.
No. 3 inserts a primer. At command "Trip!" steps to rear and slightly to right of piece. Fires at gunner's signal. Coils lanyard. Removes old primer and places it in a bag.
No. 4 brings up rammer and places it against base of projectile, assisted by Nos. 9 and 13. Assists in ramming projectile and sections of cartridge. Replaces rammer on its support.