TM 5-4310-386-14
5-21. 1st Stage Valve Head Assembly (Cont).
b. Repair. (figure 5-30)
NOTE
Suction valves are different sizes. Mark or tag to insure proper installation. Replacement of each
valve is the same.
(1)
Remove 1st stage valve head assembly (para. a. above).
WARNING
Cleanliness is imperative in maintaining and handling diving system components. All tools and
parts must be kept free of oil, grease, rust, or other contamination in accordance with Chapter 4,
Section VII of this manual. Foreign substances within an assembly could result in equipment
failure and possible injury or death to personnel.
Ensure that all air lines and components removed or openings into the air system that provides
breathing air are covered with a plastic bag and secured with a rubber band or taped shut. Small
components should be stored in a plastic bag and sealed. Failure to do so will cause air system
to become contaminated and could result in injury or death to the diver.
(2)
Remove elbow (1) from valve head (2).
(3)
Remove connector (3) and gasket (4) from valve head (2).
(4)
Remove acorn nut (5), hex head stud (6), and gasket (7).
(5)
Remove two nuts (8) and washers (9).
(6)
Remove flange (10), preformed packing (11), hood (12), discharge valve (13), and gasket (14) from valve head
(2).
(7)
Remove two stud (15) from valve head (2).
(8)
Remove two allen screws (16) and remove tube (17), gasket (18) from valve head (2).
(9)
Inspect valve head for cracks, stripped threads, or other damage.
(10)
Install gasket (18) and tube (17), and secure with two allen screws (16).
(11)
Install two studs (15) on valve head (2).
(12)
Install gasket (14), discharge valve (13), hood (12), preformed packing (11), and flange (10) in valve head (2).
(13)
Install two washers (9) and nuts (8).
5-92
