Second Stage (Mk) Reassembly - Aqua Lung SEA LV2 Technical Manual

16
9. Screw the valve assembly onto the MP hose (11) until
hand tight. Slowly open the handwheel (18) to pressurize
the system. If a leak is detected from the valve assembly,
immediately close the handwheel and depressurize the
system. Adjust the lever height as follows:
a. Using a 1/4" nut driver,
loosen the locknut (62) a
1/4 to 1/2 turn and slowly
open the handwheel to
pressurize the system.
Repeat this process until
no leak is detected.
b. Tighten the locknut using a 1/4" nut driver to initiate
a slight leak. Once a slight leak has been established,
loosen the locknut until the leak stops, then loosen
another 1/4 to 1/2 turn. Depress the lever 2-3 times,
pausing after each purge to ensure no leak is present.
NOTE: There should be approximately 1/8" of play in
the lever action of the second stage regulator when
adjusted and checked in a pressurized condition.
All adjustments and checks should be conducted at
ambient temperature (i.e. normal room) temperature.
NOTE: The 1/4 to 1/2 turn provides a visual reference
when using a 1/4" nut driver and provides an allowance
in order to obtain the correct amount of lever play.
CAUTION: Units that have no play in the lever at ambient
(room) temperature will most likely leak when exposed
to colder temperatures.
10. Close the handwheel
(18) and depressurize the
system. Remove the valve
body assembly from the MP
hose (11). Using your finger,
press down on the lever (60)
and unscrew the valve body
(59) from the inlet fitting (51).
NOTE: Set the valve body assembly to the side,
reassembly will continue during the Second Stage
Reassembly section of this manual.

Second Stage (MK) Reassembly

1. Install the exhaust valve (53) into the box bottom (54) by
inserting the stem through the center hole of the exhaust
port. Pull the stem through until the barb is on the opposite
side of the hole in the exhaust port. Examine the flap of the
exhaust valve to make sure it is laying flat and is not distorted
or folded under. Use a pair of small diagonal pliers to trim
the stem so it is only about 1/4" long. Repeat process for
other exhaust valve.
2. Insert the long tabs on the exhaust valve cover (52) into the
bottom slots of the box bottom (54). Press down on the exhaust
valve cover center rib using your index and middle fingers while
simultaneously pressing the short tabs into the top slots. Check
that the exhaust valve cover is locked into place.
Long Tabs
3. Insert the valve body as-
sembly into the box bottom
(54) with the lever (60) facing
upward. Ensure the valve
body assembly is seated
between the molded slots in
the box bottom.
4. Press down on the lever (60) and thread the inlet fitting (51)
into the valve body (59) until hand tight. It may be necessary
to press in on the valve body to prevent it from rotating inside
the box bottom (54). Use a 3/4" socket and inch pound torque
wrench to apply 50 in-lbs (5.6 Nm) of torque to the inlet fitting.
SEA MK / LV2 Technical Manual