14
Micra ADJ Second Stage Service & Repair Manual
© 1997 U.S. Divers Co., Inc.
27. Ensure that the adjustment screw is turned completely
counter-clockwise into the retaining sleeve, and fit the cap
nut(31) over its end. While holding the adjustment screw
secure, thread the cap nut clockwise onto the end of the valve
body until flush with the box bottom. Apply a torque wrench
with
2
" hex socket to tighten the cap nut until it is flush
against the box bottom, to a torque measurement that does not
exceed 24 inch-pounds.
28. Apply a medium blade screwdriver to turn the adjustable
crown counter-clockwise inside the valve body. Watch
closely as the lever arm begins to rise after 2-3 turns, and
continue to slowly turn the adjustable crown counter-clock-
wise until the top of the lever stands just below the rim of the
box bottom; exactly even with the first thread (see Fig. 22).
CAUTION: If the lever does not readily engage with the
retaining sleeve inside the valve body, this may indicate that
the retaining sleeve was incorrectly installed. Disassemble
to correct as needed, and closely inspect the condition of the
retaining sleeve to ensure that the railed channel has not
been damaged as a result of incorrect installation. If any
signs of damage are found, replace the sleeve with new .
Damage to the lever retaining sleeve may seriously impair
the proper engagement of the lever.
29. Examine the exhaust cover(34) and the box bottom to identify
the locking tabs and grooves of each respective part. Press
one corner of the exhaust cover onto the box bottom until the
mating tab snaps audibly into place. Press the center tab next,
followed by the tab of the opposite corner, and check to
ensure that all three are securely locked into their grooves.
30. Install the diaphragm(4) into the box bottom with its raised
center facing up, and check to ensure it is evenly seated onto
the shoulder at the base of the threads.
31. Place the purge cover(3) directly over the diaphragm, and
rotate it as needed to align the logo horizontally straight.
32. Fit the retaining ring(2) down over the purge cover, and apply
one pin of the Circlip/ Retaining Ring Tool (P/N 1078-46) to
a slot in the retaining ring. While holding the purge cover
securely in place, turn the retaining ring clockwise until it is
lightly snug. Check to ensure that the purge cover has not
rotated and correct if necessary. Place the tool directly over
the purge cover with the two pins facing down on each side,
and firmly press straight down to depress the purge cover so
that the pins are securely engaged into two opposite slots of
the retaining ring(2). While holding the tool securely en-
gaged, turn the retaining ring clockwise to tighten until snug.
33. Thread the color ring(1) onto the box bottom and turn by
hand until snug.
34. Position the adjustment knob(32) over the end of the adjust-
ment screw so that the through holes of both parts are in exact
alignment. Press the adjustment knob firmly onto the end of
Fig. 22 - Lever Height Preliminary Setting
