Aqua Lung EA-4500 LW Technical Manual page 7

16. Secure vise jaw inserts into shop vise. Secure the LP mod-
ule torque tool with the keyhole side up into the vise jaw inserts.
Place the LP module body (8) into the LP module torque tool.
CAUTION: The diaphragm clamp tool has three con-
nection points that engage the diaphragm clamp,
proper alignment is critical to avoid damage. Make
sure to apply steady pressure and keep the tool
centered when removing the diaphragm clamp.
Connection
Points
17. Carefully place the diaphragm clamp tool and flex wrench
onto the diaphragm clamp (3). Unscrew the diaphragm clamp
from the LP module body (8). Remove the LP module body from
the torque tool. Remove torque tool from the vise jaw inserts.
18. Place your finger lightly over the diaphragm (6) and insert a
LP air nozzle into the open swivel port in the LP module body (8).
Blow a small amount of air into the LP module body to remove the
diaphragm. Remove the valve lifter (7) from the LP module body.
CAUTION: Never remove the diaphragm by prying or dig-
ging around the edges of the LP body module with any tool.
This will cause irreversible damage to the LP body module.
19. Use the magnifier tool to
inspect the HP valve crown.
This is located on the bottom
side of the LP body module
(8). There should be no
scratches, nicks or dents on
the crown seating surface.
20. Remove the HP valve (9) and spring (10) from the HP
module body (13). Use a brass o-ring tool to remove o-ring (11)
from the balance chamber inside the HP module body (13).
CAUTION: The balance chamber cannot be removed
from the HP module body. Trying to do so will cause
irreparable damage to the HP module body.
21. Insert cylinder into the vise jaw inserts and tighten until
snug. Unscrew the HP module body (13) from the cylinder (42
or 43) using the first stage spanner and flex wrench.
CAUTION: Improper alignment of the first stage
spanner to the HP module body will cause permanent
damage to the body.
7
Seating Surface