Reassembly Procedure - Aqua Lung SECOND STAGE Service Manual

F I R S T T O D I V E
RE-ASSEMBLY PROCEDURE
1. If the exhaust valve has been removed, pass the valve
tail through the hole in the casing from the outside and
pull gently until the notch is inside the casing. If it is a
new valve cut off any excess tail leaving about 5mm.
2.
Immerse the deflector
in hot water (~50°C) for
2-3 minutes. Fit the
deflector (28) over the
moulding on the casing
and press on the
domed part to push the
deflector home.
3. Fit a new lubricated O-ring (20) into the shuttle valve
throat (12). Insert a new valve seat (18) into the shuttle
valve.
4. Insert the spring (19) into
the balancing chamber
(21). Carefully guide the
shuttle valve tail into the
spring and insert it into the
balancing chamber.
5.
If the lever has been
disassembled, replace it
taking care to put it on the
same side as the indent on
the insert. The insert hole
should be on the right when
the insert is seen thread
uppermost.
6. Insert the assembled shuttle valve, notch downwards,
into the insert, holding the lever at right angles to the
insert. Push the shuttle valve in until it passes the notch.
To check that it is correctly fitted, turn the insert over,
the shuttle valve should stay inside.
7. Fit a new lubricated O-ring (4) on the insert (7).
Fit a new lubricated O-ring (22) on the adjusting screw.
8. Fit a new lubricated O-ring (35) on the screw (33).
Using a 4mm Allen key, fit the screw (33) fully onto the
adjusting screw (23).
Adjust as follows.
a. Legend LX: Unscrew two complete turns.
b. Legend LX Supreme: Unscrew 1¼ turns.
9. Fit the adjusting handwheel (31) onto the adjusting
screw. Use tool (129001) to screw the plug (34) fully
home on the adjusting screw.
Attention: Before screwing in the plug, turn it anti-
clockwise to first engage the thread. Take care not
to damage the plastic threads.
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