TM 5-4310-387-14
6-8. First Stage Cylinder.
This task covers:
Replace
INITIAL SETUP
Tools
Materials/Parts (Cont)
General Mechanic's Tool Kit (NSN 5180-00-177-7033)
Cloth, Lint Free (Item 8, Appendix E)
Ring Compressor (NSN 5120-00-250-6055)
Lubricating Oil (Item 17, Appendix E)
Pliers, Retaining Ring (NSN 5210-00-789-0492)
Equipment Condition
Materials/Parts
First stage valve head and valve assembly
Bags, Plastic (Item 3, Appendix E)
para 5-22).
Tape, Pressure Sensitive (Item 22, Appendix E)
Bands, Rubber (Item 4, Appendix E)
References
Gasket
Retaining Rings
Cleaning Procedures, Chapter 4, Section VI.
Appendix F Torque Values.
Replace. (figure 6-1)
WARNING
Cleanliness is imperative in maintaining and handling diving air system components. All tools
and parts must be kept free of oil, grease, rust, or other contamination in accordance with
Chapter 4, Section VI 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)
Remove four nuts (1) and washers (2) and remove first stage cylinder (3) and gasket (4). Discard gasket (4).
(2)
Ensure all gasket surfaces are clean and old gasket material is removed.
(3)
Turn fanwheel (5) until piston (6) is at the top of its stroke. Wedge a piece of wood in fanwheel to prevent it
from moving.
(4)
Remove retaining ring (7) and remove wrist pin (8) and piston (6).
(5)
Place ring compressor on piston (6).
6-8
