5
DISASSEMBLY PROCEDURE
First Stage Disassembly
1.
Open the handwheel
(18) and depressurize the
system. Ensure the cylinder
(43) is completely empty and
it contains no air.
2.
Hold the second stage
inlet fitting (51) with a 3/4"
thin wrench and use a 11/16"
crow foot and flex wrench to
unscrew the hose (11) from
the inlet fitting.
3.
Remove o-ring (25) from the
hose swivel on the MP hose
(11) using the stainless steel
o-ring tool (PN 10-102-400).
CAUTION:
Use only brass o-ring removal tools (PN
944022) 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.
4.
Using a 3/16" hex bit socket and flex wrench, unscrew the
swivel port plug (14) from the first stage body (8). Separate
the swivel port plug, MP hose (11) and spacer (10). Remove
o-rings (12 & 13) from the swivel port plug.
5.
Remove the safety plug
(9) from the first stage body
(8) using a 3/8" socket and
flex wrench.
NOTE: SEA units will either have a blank plug or On / Off
handwheel assembly. Identify which type the SEA being
serviced utilizes and follow the instructions accordingly.
Disassembly of Blank Plug
6.
Use a 3/16" hex bit socket and flex wrench to remove the
blank plug (22) from the first stage body (8). Remove o-ring
(23) from the blank plug.
NOTE: Certain components are available in a black
or chrome finish. Components in either finish are
interchangeable.
Black
Chrome
