Service & Repair Manual
23
Copyright ©2015 XS Scuba
the polished cone facing in. Using a small wooden or plastic
down, press the orifice in so that it rests against the threads
inside the air barrel. (See Fig. 33.)
16. Turn the adjustment knob counterclockwise until it stops.
17. Apply a medium blade screwdriver to the slotted head of the
orifice inside the air barrel, and turn it clockwise while closely
watching the lever. When the lever starts to drop, stop – do not
turn the orifice any further. This will indicate that the orifice
has made contact against the LP seat. (See Fig. 34.)
NOTE:
To pre-set the orifice at exactly the correct depth
inside the air barrel, XS Scuba recommends using the Poppet
Align/ Orifice Preset Tool (P/N 20-785-400), available from
Peter Built Co. Complete instructions are provided with the
tool. (See Fig. 35.)
18. Lay the diaphragm(14) inside the housing, directly over the
lever with its raised surface facing up, and then the thrust
washer(15).
19. Fit the front cover(16) inside the housing so that it seats directly
over the diaphragm. Turn it as needed to align the logo straight
between the inlet and adjustment knob. (See Fig. 36.)
20. Mate the retaining ring(17) over the front cover and into the
housing, and turn it clockwise to engage the threads. While
holding the front cover secure with one hand, tighten the
retaining ring until snug with the other. Be careful to avoid
over-tightening.
21. Install the mouthpiece(23) onto the housing, correctly
oriented with the top facing up. Fasten a tie-strap(21) over
the mouthpiece with the locking tab facing toward the inlet
coupling, and cinch it snug. Trim the excess material close to
the locking tab.
▼
After completing the reassembly of the second stage, pro-
ceed to
Section 5 – Final Testing
Fig. 32 – Installing Retaining Clip
Fig. 35 – Using the Orifice Pre-Set Tool
Fig. 34 – Preliminary Adjustment of Orifice
Preset Depth
.480” - .490”
Fig. 36 – Correct Orientation of Front Cover
Fig. 33 – Installing Orifice
Summary of Contents for SEAAIR
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