Aqua Lung DSIS, Technical Manual

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5
DISASSEMBLY PROCEDURE
2.
Remove the o-ring (10) from
inside the MP hose (13) QD
fitting using the stainless steel
o-ring tool (PN 10-102-400).
3. Remove the hose hat (8) (if
equipped) from the MP hose
(13). Using the valve core
tool, unscrew the schrader
valve (9) from the end of the
MP hose.
4. Using a 9/16" deep socket
and flex wrench, unscrew
the swivel relief plug assy
(17) from the first stage body
(32). Separate the MP hose
(13) and spacer (12) from the
swivel relief plug assy.
7.
Remove the spring (17b), relief valve (17c) and o-ring (16)
from the swivel relief plug (17d). Using a magnifier, inspect the
internal sealing surface of the relief valve for debris or damage.
6. Hold the swivel relief plug
(17d) with a 9/16" wrench.
Using a 5 mm hex bit socket
and flex wrench, remove the
relief valve screw (17a).
5. Remove o-rings (14 & 15)
from the swivel relief plug
(17d).
CAUTION: The relief valve screw (17a) is under spring
tension. Use caution when disassembling.
CAUTION: Use only brass o-ring removal tools
when removing o-rings to prevent damaging
critical sealing surfaces. Even a small scratch
across an o-ring sealing surface could result
in leakage. Once an o-ring sealing surface has
been damaged, the part must be replaced with
new. DO NOT use a dental pick or any other steel
instrument, except where instructed.
NOTE: Before performing any disassembly, refer to the
exploded parts drawing, which references all mandatory
replacement parts. These parts should be replaced with
new service kit parts. Old parts should not be reused under
any circumstances, regardless of the regulator age or how
much use it has received since it was last used.
1. Open the handwheel (21) and depressurize the system.
Ensure the cylinder (39) is completely empty and it contains
no air.
NOTE: Certain components are available in a black
or chrome finish. Components in either finish are
interchangeable.
Black Chrome