Aqua Lung SEA MK Troubleshooting Guide download pdf (Page 14)

SEA LV2 Technical Maintenance Manual

NOTE: Before continuing, closely examine the

back up ring (15). You will note that it has a at

side and a concave side. For correct assembly

the concave side should be against the o-ring

(16), as shown in the picture below.

Backup ring

O-ring

12. Install new, lubricated o-rings (2) into the grooves

located on either side of the center hole of the swivel port

plug (1). Install a new, lubricated o-ring (3) on the threaded

end of the swivel port plug.

13. Pass the threaded end of the swivel port plug through

the hose swivel, then through the spacer (5). Make sure that

both o-rings (2) are covered by the hose swivel. Thread the

swivel adapter into the rst stage body. Attach a 3/16" hex

key socket to a torque wrench and torque the swivel port

plug to 60±3 in/lbs.

14. Place a new washer (18) onto the valve stem (19), fol-

lowed by the metal spacer (17) and o-ring (16).

16. Lubricate the threads of a new HP seat (20) with Christo-

Lube

. Using the squared end of the stem (19), screw a new

valve seat (20) into the rst stage body until nger tight. Leave

the stem in the HP seat. Place the handwheel over the stem

and tighten the valve seat. Remove the handwheel (10).

17. Install a new, lubricated o-ring (14) onto the bonnet (13)

so that the o-ring ts into the groove located above the larger

threads. Lubricate the bonnet threads, then pass the bonnet

over the stem and thread it into the body.

18. Attach a 3/4" medium deep-well socket to a torque

wrench and torque the bonnet to 90±3 in/lbs.

19. Place the washer (11) over the stem, against the bonnet.

With the rounded edge of the indicator ring (12) facing out-

ward, lightly thread the indicator ring onto the bonnet.

15. Install lubricated back-up ring (15).

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Aqua Lung SEA MK Troubleshooting Guide Page 14