Final Adjustment & Testing Procedures - Aqua Lung Micra ADJ Service & Repair Manual

Micra ADJ Second Stage Service & Repair Manual
Fig. 23 - Adjustment Knob Pin Installation
Fig. 24 - Inline Adjustment Tool Connection
the adjustment screw, and further check the alignment of
these parts by inserting the pin of a Seat Extraction Tool (P/N
1094-36) completely through the hole. If it does not pass
through easily, remove the knob and repeat before proceeding
further.
35. Place the second stage on a padded surface with the purge
cover facing up, so that it rests on the exhaust cover and outlet
boss. Lay a small, 1" thick block of wood next to the second
stage, beneath the knob. Insert the pin(33) into the hole of the
knob, and gently tap it completely through with a small
mallet, until it is seated evenly on both sides (see Fig. 23).
36. Install the mouthpiece(17) onto the box bottom, and lightly
fasten a mouthpiece clamp(18) onto the groove of the mouth-
piece. Turn the clamp so that the locking tab is facing toward
the inlet side of the box bottom, and pull the end sufficiently
snug. Snip the extra length with a small pair of scissors or
wire cutters.
37. Direct low pressure air (50 psi) through the LP hose(8) to
flush out any debris that may be inside. Install O-rings (7&9)
onto the hose, and set it aside.
This concludes the reassembly of the Micra ADJ second
stage. Refer directly to the following section, titled Final
Adjustment & Testing.
Final Adjustment & Testing Procedures
NOTE: Before performing the following procedure, refer to
Table 5, titled Test Bench Specifications - Micra ADJ
CAUTION: Prior to adjusting and testing the Micra ADJ
second stage regulator, the accompanying first stage must
be correctly serviced, adjusted to a stable intermediate
pressure of 140 psi , and fully tested. Refer to either the
Conshelf SE Service Manual (P/N 7802-08) or the SEA
Service Manual (P/N 7802-12) before attempting to perform
the adjustment and testing of the Micra ADJ second stage.
1. Thread the male fitting of the LP hose into the preferred low
pressure port of the first stage, and apply a torque wrench
with n" crow-foot to tighten to 40 inch-pounds (±2).
2. Connect an intermediate pressure test gauge (P/N 1116-10) to
the first stage via a separate low pressure hose.
3. Attach the female fitting of the second stage low pressure
hose to the Micra In-Line Adjustment Tool (P/N 1001-95) by
mating the swivel nut onto the male threaded end of the tool.
Turn the swivel nut clockwise by hand until finger snug.
4. Pull back the knob of the tool to retract the adjusting stem,
and mate the female threaded end of the tool onto the second
stage inlet fitting. While holding the tool secure, turn the
second-stage clockwise until lightly snug (see Fig. 24).
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© 1997 U.S. Divers Co., Inc.