Aqua Lung Legend First Stage Technisch onderhoudshandboek - Pagina 7
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Legend First Stage Technical Maintenance Manual
NOTE: Before continuing, closely examine the
back up ring (3). You will note that it has a flat
side and a concave side. For correct assembly
the concave side should be against the o-ring
(4), as shown in the picture below.
4. Install the new backup ring into the HP plug (1) with the
concave side facing outward. Install a new, lubricated o-ring
(4) into the HP plug, against the backup ring. Visually inspect
the o-ring to make sure it is seated evenly.
5. Install a new, lubricated o-ring () onto the HP plug (1).
6. Drop a new HP seat (6), blue sealing side first, into
the first stage. Inspect the seat to make sure it is standing
straight. Place the spring (5) over the seat.
7. Insert an 8mm hex key into the HP plug. Insert the plug
into the first stage body. Push down on the plug to compress
the spring while at the same time turning clockwise to screw
it into the body. Tighten the HP plug until it stops turning. At-
tach an 8mm hex key adapter to an in/lbs torque wrench and
tighten the HP plug to 45 in/lbs.
O-ring
Backup ring
8. Turn the regulator over so the medium pressure side
is facing upward. Drop the pin (7) through the center hole.
Place the pin support (18) over the pin. Press on the pin sup-
port a few times. It should feel like a spring-loaded button.
9. Press a new diaphragm (19b) into the first stage body.
Run your finger around the edge of the diaphragm to make
sure it is properly seated. Install the thrust washer (19a) on
top of the diaphragm and make sure it is seated flat against
the diaphragm.
10. Place the spring pad (20), flat side down, in the center of
the diaphragm. Set the main spring () on the spring pad.
Place the washer (3) on top of the spring.
11. Using an 8mm hex key, thread the adjustment screw
(24) into the spring retainer (21) until the first two threads are
engaged. Thread the spring retainer onto the body until hand
tight.
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