TM 10-8415-208-12
(5) Pull anti-rotation collar (7) clear of regulator tube (8) and bypass (9) connections.
(6) Disconnect regulator tube (8) and by pass tube (9) from center section (6).
(7) Remove screws (10) and washers (11) from center section (6).
(8) Lift center section (6) out of lower housing (12).
(9) Remove diaphragm clamp (13).
(10) Remove diaphragm assembly (14) from center section (6).
(11) From the underside of center section (6), hold valve actuator (15) up with a finger to gain access to
demand valve core (16).
(12) Remove demand valve core (16) using the valve core extractor from the service kit.
b.
Installing.
(1) Perform steps steps b. through d., paragraph 3-2.1, and lubricate demand valve core (16).
(2) From the underside of center section (6), hold valve actuator (15) up with a finger.
(3) Install demand valve core (16) using the valve core extractor from the service kit.
(4) Position diaphragm assembly (14) on center section (6) by running a finger around the diaphragm lip to
pull it over the bottom of center section (6).
(5) Position diaphragm clamp (13) with the screw opposite regulator tube (8) and bypass tube (9) connections
and tighten.
(6) Place center section (6) in lower housing (12) ensuring the connections for regulator tube (8) and by pass
tube (9) are properly aligned.
(7) Install washers (11) and screws (10) into center section (6). Tighten screws (10) evenly.
(8) Connect regulator tube (8) and bypass tube (9) to center section (6).
(9) Carefully push anti-rotation collar (7) over regulator tube (8) and bypass tube (9) connections.
(10) Connect exhalation hose (5) to center section (6) using hose clamp (4).
(11) Connect coolant canister hose (2) to coolant canister (3).
(12) Perform the Breathing System Leak Test and the Oxygen Constant Flow Rate Test. Refer to paragraphs
3-10.4.2 and 3-10.4.3.
(13) Install top cover (1).
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