Service & Repair Manual
9
Copyright ©2008 XS Scuba
Second Stage Disassembly
CAUTION: Whenever possible, use only plastic or
brass O-ring tools for removing O-rings in order to pre-
vent damage to the sealing surface. Steel instruments,
such as dental picks, can easily damage the sealing
surface of a softer brass part, causing irreparable leak-
age and requiring the part to be replaced with new.
1. Slide back the hose cover to expose the connection of the
LP hose.
2. While holding the inlet fitting(7) secure with a n" open-
end wrench, apply a n" open-end wrench to the fitting of
the LP hose. Turn the hose fitting counter-clockwise to
loosen and remove.
3. Using a plastic or brass O-ring tool, carefully remove the
O-ring from the post inside the hose fitting.
CAUTION: When performing the above step, be very
careful to avoid scratching the O-ring sealing surface.
Doing so may cause a permanent leak that will require
the replacement of the LP hose.
4. Using a n" open end wrench, turn the inlet fitting counter-
clockwise to loosen, and unscrew it completely by hand to
remove. Closely examine the plastic threads and overall
condition of the inlet fitting, and replace with new if any
damage is found.
5. Snip the plastic tie-strap(12) that holds the mouth-
piece(11), and gently pull the mouthpiece off the second
stage housing(13). Inspect the mouthpiece to ensure that
it is supple and free of any tears or corrosion. If any dam-
age is found that could result in discomfort or leakage,
discard the mouthpiece and do not reuse.
6. While holding the second stage secure with one hand,
firmly grasp the retaining ring(1) with the other, and turn
the ring counter-clockwise to loosen and remove it, along
with the diaphragm cover(2).
NOTE: If the retaining ring is difficult to loosen,
XS Scuba recommends using the Rim Clamp (P/N
20-790-200), available from Peter Built Co. Complete
instructions are provided with the tool.
7. Separate the diaphragm cover from the retaining ring,
and closely inspect the cover to ensure that it is perfectly
round and free of damage. If any damage is found, dis-
card the cover and replace with new.
