TM 5-4220-227-14
5-38. Inhalator Mask Demand/Exhaust Regulators
This task covers: Replace
INITIAL SETUP
Tools
Materials/Parts (Cont)
General Mechanic's Tool Kit
Bands, Rubber (Item 4, Appendix E)
(NSN 5180-00-177-7033)
Bags, Plastic (Item 3, Appendix E)
Materials/Parts
Equipment Condition
Inhalator Mask Demand/Exhaust Regulators
Inhalator mask assembly removed (para. 4-50).
Regulator to Manifold Preformed Packing
Dual hose assembly removed (para. 5-39).
Grease, Halocarbon (Item 13, Appendix E)
Pin Locking Tool
Replace. (figure 5-58)
WARNING
To prevent the spread of disease, serious injury and/or death, oxygen breathing systems must be
maintained hygienically clean and free from dust, dirt, and all hydrocarbon contamination. Refer to
oxygen system prework procedures para. 4-10 to avoid violating this warning.
NOTE
Procedures for replacement of demand regulator and exhaust regulator are the same for both. Demand
regulator replacement is used to illustrate procedure.
(1)
Insert pin locking tool (drift) in hole (1) in manifold (2) and rotate demand regulator (3) until tool end drops into
detent in regulator (regulator no longer turns freely).
(2)
Unscrew and remove demand regulator (3) and preformed packing (4).
(3)
Apply grease to preformed packing (4) and install into groove in manifold (2).
(4)
Install demand regulator (3) on manifold (2) and insert pin locking tool (drift) in hole (1) in manifold (2). Rotate
regulator until tool end drops into detent (regulator no longer turns freely).
(5)
Rotate demand regulator (3) clockwise until tightly mounted on manifold (2).
(6)
Remove pin locking tool. Check that demand regulator (3) rotates freely.
(7)
Follow same procedure to replace exhaust regulator (5) and preformed packing (6).
5-126
