Service & Repair Manual
11
Copyright ©2008 XS Scuba
Fig. 5 – Orifice Inspection
NOTE: The orifice is O-ring sealed, and it will remain
inside the air barrel after it has been unthreaded. The
following step must be performed to remove the orifice
without damaging its polished sealing surface.
18. When the orifice has been unthreaded from the air barrel,
carefully insert a small wooden or plastic dowel through
the opposite end of the valve body, directly over the
sealing edge of the orifice. Gently press out the orifice.
(See Fig. 4.)
19. To avoid using a sharp tool that can damage the orifice,
squeeze the O-ring(10) between thumb and forefinger to
remove it from the orifice head. Discard the O-ring and
do not reuse.
20. Closely examine the orifice with the use of a magnifier,
checking for any scratches or other damage to the
sealing edge and the groove that holds the O-ring (see
Fig. 5). If any damage or wear is found, discard the
orifice and do not attempt to reuse. If it is in reusable
condition, set it aside on a soft surface to keep it isolated
from other metal parts.
21. Gently pull the exhaust deflector(26) off from the second
stage housing to expose the exhaust valve(25) for
inspection.
22. Closely inspect the exhaust deflector to check for any
signs of damage that may have been caused by abuse
or improper disassembly. If found, discard it and replace
with new,
23. Closely inspect the condition of the exhaust valve to
ensure that it is evenly seated against the second stage
housing on all sides, and free of any tears, holes, or
other signs of decay. Peel back the lip on all sides to
ensure it is supple and returns to its original position. If
any wear or damage is detected, or if the material feels
stiff or decayed, pull the exhaust valve straight out of the
housing and discard it.
NOTE: It is not necessary to remove the exhaust valve
diaphragm unless it shows signs of wear or decay upon
inspection. Once the diaphragm is removed, however,
it will be permanently stretched and then must be re-
placed with new.
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After completing the disassembly of the first and
second stages, refer to the instructions provided in
the XS Scuba Authorized Service Document, titled -
Regulator Parts Cleaning Procedures.
Fig. 4 – Removal of Adjustable Orifice
