TM 5-4310-386-14
5-21. 1st Stage Valve Head Assembly.
This task covers:
a.
Replace
b.
Repair
INITIAL SETUP
Tools
Equipment Condition
General Mechanic's Tool Kit
Compressor unit shut down (para. 2-13).
(NSN 5180-00-177-7033)
Compressor air filter assembly removed (para. 4-21).
Materials/Parts
Reference
1st Stage Valve Head Assembly
Cleaning Procedures, Chapter 4, Section VII.
Gasket
Refer to Appendix F for torque values.
Tape, Teflon (Item 26, Appendix E)
Tape (Item 25, Appendix E)
Bands, Rubber (Item 4, Appendix E)
Bags, Plastic (Item 3, Appendix E)
Detergent, Nonionic (Item 8, Appendix E)
Distilled Water (Item 9, Appendix E)
a. Replace. (figure 5-29)
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.
(1)
Loosen fitting nut (1) and remove line (2).
(2)
Loosen fitting nut (3) and remove line (4).
(3)
Remove four nuts (5) and washers (6) from valve head assembly (7).
(4)
Remove valve head assembly (7) and gasket (8) from cylinder (9).
(5) Install gasket (8) and valve head assembly (7) and secure with four washers (6) and nuts (5).
(6)
Install line (4) and tighten fitting nut (3).
(7)
Install line (2) and tighten fitting nut (1).
5-90
