Port Retainer - Kirby Morgan 77 Operation And Maintenance Manual

Remove the port retainer.
4) Be sure not to lose the small o-ring that is locat-
ed on the back side of the port retainer at the nose
block device packing.
5) The four whisker spacers must not be misplaced.
They will usually be found lodged in the whisker.
6) Remove the old port and sealing o-ring.
Helmet shell
© ⅯⅯⅩIⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318003

Port retainer

Port
O-ring
Kidney
plate
KM77 Port retainer system.
Kirby Morgan
Remove the face port.
Packing
O-ring
77
®
129