Aqua Lung PHODS Technical Manual page 7

14. Separate the piston (4) from the retaining cap (2). Inspect
the inside surface of the cap for corrosion or scratches.
Remove the spring (7) from the first stage body (8).
14. Using a magnifier, inspect
the condition of the HP crown
inside the first stage body
(8). There should be no
scratches, nicks or dents on
the crown seating surface.
15. Remove o-rings (3 & 5) from the piston (4). Insert the seat
extraction tool into the open end of the piston and push out
the HP seat (6).
CAUTION: Ensure that the crowfoot is aligned with
the wrench flats at the top of the first stage body (8).
Do not position the crowfoot over the bonnet opening
as this will cause damage, resulting in replacement
of the first stage body.
17. Secure the cylinder (26) in
the vise jaw inserts. Unscrew
the first stage body (8) from
the cylinder using a 1 3/16"
crowfoot & flex wrench.
18. Lift the fill port cap retaining wire off the cylinder (26).
Remove o-ring (27) from the first stage body (8).
1 9 . P e r f o r m a v i s u a l
inspection of the cylinder
(26) in accordance with local
regulations. Do not reuse
a damaged or corroded
cylinder. Either replace the
cylinder with a new one or
have the cylinder oxygen
c leaned /ser vic ed by an
authorized repair facility.
NOTE: Before beginning reassembly, perform
parts cleaning and lubrication in accordance
with PROCEDURE A: Oxygen Cleaning
and Lubricating.
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