Sundstrom SR570 - Page 8

SR570 supplied-air face shield — How to Copyright © 2020 by The S.E.A. Group 8
Release and remove the valve cover.
Release and remove the membrane.
Press on the new membrane in right position
according to the picture. Carefully check that the
membrane is in contact with the valve seat all
round.
Press the valve cover into place.
Secure the valve cover on one side.