User manual

ATOMIC AQUATICS FIRST AND SECOND STAGE REGULATORS MAINTENANCE PROCEDURES • 9/2003 12
Part 4. Low-Pressure Quick Disconnect
Note: There are 2 serviceable o-rings the disconnect assembly supplied with the service kit. A very slight amount of
lubricant may be used (Christolube
™
) during reassembly.
1. Quick Disconnect Disassembly
Make sure the hose in not pressurized. Using two 5/8" wrenches or an adjustable wrench, unscrew the hose body
from the QD body. The 20-2011-00 o-ring is now accessible for service. For further disassembly, the hose body
can be unscrewed from the low-pressure hose using 2 wrenches (11/16" and 5/8"). The QD poppet and spring
can now be pushed out the back side of the QD body. The 20-2009-00 o-ring on the poppet can now be replaced.
The sleeve and QD body can be further disassembled for cleaning but is not usually needed. There are no service-
able parts inside. To disassemble, pace a towel on the bench top to catch the stainless balls. Using a small o-ring
pick, position it under the c-ring in the groove that runs across the face of the QD body. Lift the ring out of its
groove and off of the end of the QD body. The sleeve will slide off and the balls and spring will drop free of the
assembly.
2. Quick Disconnect Reassembly
To keep the balls in place for reassembly, place a small amount of lubricant (Christolube) into each hole and place
the ball in the hole. Slide the spring over the balls and follow with the sleeve. Compress the sleeve with the sleeve
and slide the c-ring into the groove on the QD body to lock it in place.
Replace the spring and poppet into the hose body. Screw into the low-pressure hose and tighten with 2 wrenches
(11/16" and 5/8"). Screw the QD body with sleeve on to the hose body and tighten (5/8" wrenches). Pressurize
and test fit to SS1 nipple. Water test for leaks.
Final Check
1. Water test the quick disconnect assembly in both the connected and disconnected condition for leaks.
2. Check SS1 for proper pneumatic inflation, oral inflation and deflation
3. Check regulator for inhalation, exhalation and cracking effort. Purge and release, there should be no free flow.
4. Fully inflate the BCD, check all connections for leaks.