Aqua Lung APEKS TX 50 Technical Manual page 18

18
15
While holding the rim of the case (10) at eye level, use
the seat adjustment tool (PN AT51) to turn the seat (18)
clockwise until the lever drops about ⅛" below the case rim. Then,
turn the seat counter clockwise until the lever is level with the
case rim.
16
Position the diaphragm (9) into the case (10). Using your
finger, work the edges of the diaphragm into place so it sits
evenly in the case . Install the diaphragm cover (8) into the case,
over the diaphragm.
CAUTION: Inspect the diaphragm strike plate for any
signs of distortion. If the strike plate shows any sign it
must be replaced with a new one.
17
Place the small
diameter end of the
spring (6) onto the purge
button (5). Orient the case
cover (7) with the slotted
openings pointing to the right.
Properly align the purge button
and press it into the case cover
until it snaps into place.
18
Thread the case cover
(7) onto the case (10)
by hand until snug. Using the
cover tool (PN AT31) tighten
the cover until it stops. Confirm
that the purge button is
properly aligned.
NOTE: Perform the following suction test prior to fitting the
hose: hold your thumb over the regulator inlet to seal, then
breath through the mouthpiece outlet port. You should not be
able to draw air in.
19
Replace the plug (22)
into the adjustment
knob (23).
20
Install the o-ring into the
swivel end of the hose.
NOTE: It is recommended that the final adjustment be
performed prior to installing the mouthpiece. Refer to Final
Adjustment Procedures on page 19.
THIS ENDS REASSEMBLY OF THE
TX50 SECOND STAGE
TX50 Technical Manual