10
Cousteau/ SEA First Stage Service & Repair Manual
© 2000 Aqua Lung America, Inc.
NOTE: If the backup ring is an earlier version that is black
with a concave surface on one side, it is important to install it
into the spring block with the concave side facing up, towards
the O-ring.
14. Insert the seat spring(14a) and open end of the spring block
assembly into the body, over the stem of the high pressure
seat. Then place the shorter seat spring(14b) directly over the
top of the spring block assembly.
15. Install the O-ring(18) onto the end plug(19), and mate the end
plug into the body, directly over the spring and spring block
assembly. Turn the end plug clockwise by hand until snug.
16. Resecure the vise mounting tool in the vise so the first stage
stands vertical with the end plug facing up. Apply a torque
wrench with 8mm hex key socket, and tighten the end plug to
a torque measurement of 45 (
±
2) inch-lbs.
17. Loosen the vise to remove the first stage, and refer to the
procedures below for assembling the yoke or DIN connection.
18.
REASSEMBLY OF YOKE CONNECTION
A. Install the O-ring(6) into the recessed groove inside the
inlet fitting(7).
B. Install a new filter(5) into the yoke retainer with the
conical portion facing downward, and press it firmly into
place so that it seats inside the O-ring. Using internal
circlip pliers, install a circlip(4) to secure the filter.
NOTE: Install the circlip with the flat side facing up to ensure
greater holding strength.
C. Mate the inlet fitting through the yoke(8) and into the
inlet of the first stage body. Tighten clockwise by hand
until snug.
D. Secure the vise mounting tool in a vise so that the first
stage is horizontal and the yoke faces up (see Fig. 7).
Apply a torque wrench with 26mm crow-foot to tighten
the yoke retainer to a torque measurement of 20 (
±
2)
foot-lbs. Loosen the vise to remove the first stage, and
remove the vise mounting tool.
E. Install the O-ring(3) into the dust cap(2). Wrap the cord
that is tied to the dust cap around one leg of the yoke, and
pass the cap through the loop to form a loose knot.
F.
Mate the yoke screw into the top of the yoke, and turn it
clockwise to fasten the dust cap snugly in place over the
inlet boss.
19.
REASSEMBLY OF DIN CONNECTION
A. Install the O-ring(8f) onto the inlet fitting, and mate the
inlet fitting through the handwheel(8g), and into the inlet
of the first stage body. Turn the inlet fitting clockwise by
hand until snug.
Fig. 7
