Aqua Lung SECOND STAGE Service Manual page 8

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10. Fit the pin (32) inside the adjusting handwheel. Fit the
adjusting handwheel into the insert. The lever should
now be under tension (due to the spring). Screw the
adjusting handwheel in until the hole which accepts the
spring pin is exposed. Fit the spring pin (11) into its
position. Gently unscrew the adjusting handwheel until it
applies sufficient tension on the spring pin tp prevent it
from falling out.
Hole exposed
11. Fit a new lubricated O-ring (24) onto the venturi control
(6). Position the control handle upwards and push it fully
home into the casing.
12. While holding the lever down, fit the insert inside the
casing from the venturi control side. Make sure that the
flats on the insert fit into the flats on the casing.
Spring pin installed
Legend LX Second Stage Service Manual
13. Fit a new lubricated O-ring (4) on the insert and fit it
against the casing. Slide the heat exchanger (3), its
widest part first, onto the insert. Screw on the nut (5)
and tighten it at 0.5 m.kg.
14. Fit a new lubricated O-ring (10) onto the adjustable seat
(9). Fit the seat (threaded part first) into the insert and
push it fully home using a screwdriver.
15. With the flat side of the casing at eye level, screw in the
adjusting knob until the lever is about 4mm below the
level of the casing edge. Now unscrew it until the lever
just shows above the edge of the casing.
16. Fit a new lubricated O-ring on the threaded end of the
hose. Fit a new lubricated O-ring on the hose nipple.