TM 5-4220-226-14&P
NOTE
Do not re-use oral-nasal valve once it has been removed from
the valve body.
b. Cleaning and Inspection
(1) Inspect all components for cracks, holes, or signs of deterioration.
(2) Wipe out the mask with 10% providone-iodine solution and clean, lint-free cloths.
(3) Rinse the mask with fresh water. Wipe with clean, lint-free cloths; air or blow dry.
c. Repair
Repair is limited to the replacement of damaged parts.
d. Installation
(1) Wet new oral-nasal valve stem with fresh water and install valve (4) into body (3). Cut valve stem so
that it protrudes 1/4 inch from retainer.
(2) Install assembled valve body (3) into oral-nasal mask (2).
(3) Install microphone (1) into mask.
(4) Install oral-nasal mask on regulator mount nut.
4-17. Nose Clearing Device Maintenance.
This task covers:
a. Removal
b. Cleaning and Inspection
c. Repair
d. Installation
INITIAL SETUP
Tools
Materials Required (continued)
Tool Kit, General Mechanic's (item 4, appx B)
Warm Fresh Water (item 4, appx E)
Nonionic Detergent (NID Solution)
Materials Required
(item 3, appx E)
Silicone Lubricant (item 8, appx E)
Soft Bristle Brush (item 1, appx E)
Preformed Packing
Clean, Lint-Free Cloths (item 2, appx E)
4-19
