Aqua Lung SEA LV2 Technical Manual page 6

6
Disassembly of Handwheel
7. Unscrew the handwheel retainer (15) using the modified
screwdriver. Remove the handwheel washer (16), spring (17)
handwheel (18), nylon washer (19) and indicator ring (20)
from the stem (28).
8. Using the 3/4" socket and flex wrench, unscrew the bonnet
(21) from the first stage body (8). Pull the stem assembly out
of the bonnet.
9. Remove the back-up ring (24), o-ring (25), brass washer
(26) and Teflon washer (27) from the stem (28).
NOTE: It is possible that some or all of these parts have
remained in the bonnet (21).
10. Remove the o-ring (23)
from the bonnet (21).
Check Bonnet
11. Insert the squared end of
the stem (28) into the seat &
disc retainer (29) and unscrew
it from the first stage body (8).
12. Using a magnifier, inspect
the condition of the seat &
disc retainer crown inside the
first stage body (8). There
should be no scratches, nicks
or dents on the crown seating
surface.
Disassembly of Dial Pressure Gauge
NOTE: SEA units will either have a dial pressure gauge
(36) or pin style pressure gauge (37). Identify which
type the SEA being serviced utilizes and follow the
instructions accordingly.
13. Remove the pressure gauge (36) using a 7/8" crowfoot
and flex wrench. Remove o-ring (32) from the pressure gauge.
CAUTION: Be careful not to damage the fill port (33) with
the wrench while removing the pressure gauge (36).
Disassembly of Pin Style Pressure Gauge
14. Use the valve handle retainer tool to remove the pin
pressure indicator (37) from the first stage body (8). Remove
o-ring (32) from the pressure indicator body (38).
SEA MK / LV2 Technical Manual
Crown