TM 5-4220-233-14
(1) Insert new valve seat (28), with chamber side toward main valve, into main valve body (22).
(2) Thread seat retainer (27) into main valve body (22) and torque to 100-110 in/lbs.
(3) Insert main valve (24) and spring (23) into main valve body (22).
(4) Thread filter assembly (21) onto main valve body (22) hand tight.
(5) Install back-up ring (25) and O-ring (26) onto main valve body (22) to complete main valve assembly
(20).
(6) Thread main valve assembly (20) into body (5) until It bottoms out in body hand tight.
(7) Slide thrust washer (19), thrust bearing (18), and thrust washer (17) onto adjusting screw assembly (4).
(8) Insert adjusting screw assembly (4), and spring (16) into bonnet (6) and secure by installing screw (15)
through slot in bonnet.
(9) Install back-up ring (13) and O-ring (14) onto sensor back-up (10).
(10)
Install back-up ring (11) and O-ring (12) into sensor back-up (10).
(11)
Insert sensor (7) Into sensor back-up (10).
(12)
Insert connector (8) into body (5).
(13)
Position spring pad (9) on tip of sensor (7) and insert into body (5).
(14)
Clamp body (5) of regulator in a vise with a protector around body to prevent damage.
(15)
Thread bonnet (6) into body (5) and torque to 50 ft/lbs.
(16)
Install handknob (2) and secure to top of adjusting screw assembly (4),with snap ring (3).
(17)
Install plug (1) into top of handknob (2).
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