Reassembly Procedure - Aqua Lung ABS SECOND STAGE Technical Maintenance Manual

6
NOTE:
Aqua Lung no longer requires mandatory
replacement of the exhaust valves. As long as
the valves and their associated seating surfaces
are clean and in good condition, they may be left
in place.
17. Insert a 3mm screwdriver into the gap between the
exhaust grid (10) and casing. Pry out each of the lower tabs
individually, then lift off the exhaust grid. Inspect the exhaust
valves. They should be clean and have well defined edges. If
the valves are not in excellent condition due to warpage,
uneven edges, deposits or deformation of any kind, the
valves must be replaced.
THIS ENDS DISASSEMBLY
Before starting reassembly, perform parts
cleaning and lubrication in accordance with
Procedure A: Cleaning and Lubricating (p. 15).

REASSEMBLY PROCEDURE

NOTE: Before performing any reassembly, it
is important to inspect all parts, both new and
those that are being re-used, to ensure that
every part and component is perfectly clean
and free of any dust, corrosion, or blemishes.
Check all o-rings to ensure they are clean and
supple before dressing with Christo-Lube
MCG 111.
1. If you removed the exhaust valve (9) during disassembly,
install each exhaust valve into the box bottom (19) by feeding
the stem of the exhaust valve into the center hole of the valve
in the box bottom. Using needle nose pliers, gently pull the
stem through the hole on the opposite side inside the box
until the barb has passed through and is securely seated
against the opposite side of the box.
If you are installing a new valve, carefully snip off the excess
material of the stem with a small pair of scissors, leaving 5mm.
2. Install the exhaust grid (10) by inserting the upper tabs
into the casing. Push both sides in, followed by pressing in
the lower tabs.
Insert upper tabs
3. Install the o-ring (11) on the inlet fitting (12), securing it
into the groove at the base of the threads, just above the
hex feature.
4. Install the o-ring (20) onto the crown (21), and carefully
insert the threaded end of the crown into the hose connection
of the inlet fitting (12).
®
5. Gently press it in further with the blunt end of the extrac-
tion tool (P/N 109437) until it stops (see Fig. 2).
Fig.2 - Crown Installation