Valve Body Reassembly - Aqua Lung SEA LV2 Technical Manual

Valve Body Reassembly

1. Install o-ring (23) onto the
inlet fitting (51).
2. Place the poppet bearing (58) over the threaded end of
the poppet (56) with the square feature facing up. Guide the
threaded end of the poppet into the open end of the valve
body (59) and out through the square hole in its center.
While sighting through the top of the valve body, rotate the
poppet as needed to align the square feature of the poppet
bearing with the square hole in the valve body. Press the
poppet upward to seat the poppet bearing securely in place.
When finished, check to ensure that the top of the poppet
bearing is flush with the top of the valve body.
3. Stand the inlet fitting (51) vertical on a flat surface with
the crown side facing up. Place the previously used MP seat
(55) on top of the crown, inside the inlet fitting. Press a new
MP seat into the poppet (56) with the smooth side facing out.
4. Stand the poppet (56) on
its head inside the inlet fitting
(51), on top of the old MP seat
(55). Place the spring (57)
over the poppet shaft.
NOTE: The LV2 second stage uses a spring (57) that is red in
color. The MK second stage uses a spring that is silver in color.
CAUTION: If resistance is felt, immediately stop and
unscrew the valve body (59) from the inlet fitting (51)
to check the alignment of the poppet shaft (56) and
poppet bearing (58). Excessive force and misalignment
will result in damage to the poppet bearing, requiring
replacement.
5. Hold the inlet fitting (51) se-
cure and lower the valve body
(59) down over the poppet
shaft (56). Press down on the
valve body to compress the
spring (57) while threading it
onto the inlet fitting. Continue
tightening the valve body onto
the inlet fitting until it stops.
6. Place the arms of the lever (60) inside the grooves on the
valve body (59), straddling the poppet shaft (56). Ensure the
curved portion of the lever faces away from the air outlet hole
on the valve body. Place the washer (61) onto the poppet shaft.
7. Place the locknut (62), with the flat side facing down onto
the poppet shaft (56). Being careful to avoid disturbing the
lever (60), tighten the locknut by hand to engage the threads
on the poppet. Apply a 1/4" nut driver to the locknut and
tighten it until only two threads of the poppet shaft are visible
above the top of the locknut.
8. Hold the valve body (59) with the lever (60) facing up and
slowly unscrew the inlet fitting (51) to remove the used MP
seat (55). Depress the lever with your finger and thread the
inlet fitting back into the valve body.
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