Micra ADJ Second Stage Service & Repair Manual
11
© 1997 U.S. Divers Co., Inc.
7.
Apply a medium blade screwdriver to the slotted head of the
adjustable crown, and turn the crown clockwise to engage the
threads. Continue turning the crown clockwise into the valve
body to the full extent of its thread engagement, and stop
turning when resistance is felt.
8.
Install the O-ring(20) into the groove of the valve body near
the indexed (squared) portion of the inlet, being careful to
avoid rolling the O-ring down over the threads.
9.
Lay the LP seat(23) into the cavity on the plastic end of the
poppet(24), checking first to ensure that the smooth side of
the seat is facing out, and firmly press the seat into place.
10. Hold the valve body positioned with the inlet end facing to
the left, and the large hole in the center of its tube facing
directly up. Examine the plastic head of the poppet to locate
the small through-hole between two of the three ribs. Insert
the head of the poppet into the adjustment end of the valve
body, so that the through-hole is aligned directly with the
center of the large hole in the valve body (see Fig. 12). Slide
the poppet completely into the valve body, being careful to
maintain this alignment. If correction of the alignment is
necessary, gently rotate the poppet with a small probe through
the large hole of the valve body.
11. Stand the valve body vertical on its inlet end, with the head of
the poppet facing down inside. Gently place the spring(25)
down over the metal shaft of the poppet, so that it rests flush
over the ribbed head inside the valve body.
12. Place the washer(26) down inside the valve body so that it
rests flush over the spring.
13. Without disturbing the alignment of the poppet inside, care-
fully rotate the valve body to examine the two small holes
which are on opposite sides, closest to the adjustment end,
and the two larger holes which are offset below them by
ninety degrees (see Fig 13). Note that one of the smaller
holes is recessed, and rotate the valve body until it stands with
this recessed hole clearly visible at 6 o’clock, with the smaller
hole facing directly away at 12 o’clock.
14. While holding the valve body standing vertical, place the
slotted end of the Micra ADJ Lever Installation Tool inside
the valve body, directly over the washer. Carefully align the
tool so that one of the open channels is positioned above the
recessed hole at 6 o’clock (see Fig. 14).
15. While holding the valve body secure, press the Lever Installa-
tion Tool down over the washer and spring, until the washer is
positioned below the recessed hole in the valve body. Hold
the tool depressed to insert the small end of the pin(22) into
the recessed hole, and through the smaller hole on the oppo-
site side of the valve body (see Fig. 15). If necessary, rotate
the tool slightly in either direction to align more precisely.
Slowly release pressure on the tool, and check to ensure that
Fig. 12 - Valve Body / Poppet Alignment
Through-Hole
Fig. 13 - Valve Body Features
Fig. 14 - Tool / Valve Body Alignment
Fig. 15 - Pin Installation
Recessed
Pin Hole
