Aqua Lung MRS III, Operation And Maintenance

Page: 21 / 45

15.6.3.2.1. NOTE! DO ALL WORK ON A CLEAN WORK
SURFACE AS IT IS IMPORTANT THAT THIS VALVE
BE KEPT CLEAN.
15.6.3.2.2. NOTE! REMOVING AND
REINSTALLING THE VALVE INTO THE CYLINDER
REQUIRES SPECIAL TOOLS AND TRAINING, SO
THIS SHOULD ONLY BE DONE BY TECHNICIANS
TRAINED IN CYLINDER INSPECTION OR TESTING.
15.6.3.3 When removing the valve, it is
recommend that you use valve tool
VAL1-10. (figures 32 and 33)
15.6.3.4. Using notched screwdriver
#9-47448 from the SEA tool kit,
remove the nut (VAL1-18) that holds
the knob (VAL1-19) on. Then lift the
knob off. Lay aside (figure 34).
15.6.3.4.1. CAUTION! THERE IS SLIGHT
SPRING TENSION HOLDING THIS
NUT. USE CAUTION WHEN
REMOVING.
15.6.3.5. This will expose the bonnet (VAL1-16)
nut. Remove the nut using a valve nut tool
VAL1-12 (figures 35 and 36) , or if this tool
is not available use a 12” adjustable wrench
endwise (figure 37). Lift the nut off and
push the stem out of the nut. Use the stem
(and the knob if needed) to remove valve
seat assembly., then use a pick to carefully remove the copper gasket (VAL1-13).
15.6.3.6. Using an O-ring tool remove the packing washers from inside the bonnet nut.
(VAL1-16).
page 15
figure 36
figure 37
100786
figure 35
VAL1-20
VAL1-8
VAL1-7
VAL1-15
VAL1-6
VAL1-15
VAL1-14
VAL1-16
VAL1-17
VAL1-19
VAL1-18
Supply Cylinder Valve Assembly
figure 34
VAL1-13