TM-5-5420-202-10

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TM 5-5420-202-10

GAS AND PARTICULATE FILTER CHANGE CRITERIA

WARNING

Nuclear-Biological-Chemical (NBC) contaminated air f lters must be handled and disposed

of only by authorized and trained personnel. The unit commander or senior off cer in charge

of maintenance personnel must ensure that prescribed protective clothing (FM 3-11.4) is

used and prescribed safety measures and decontamination procedures (FM 3-11.5) are

followed. The local unit SOP is responsible for

final

disposal of contaminated air f lters.

Failure to comply may result in personnel injury or death.

NOTE

For maximum safety, it is vital the gas and particulate f lters of f lter unit M8A3 be fully

serviceable. Field maintenance is responsible for changing f lters when notif ed. Notify field

maintenance when one or more of the following conditions exist.

1. Conditions for M12A1 gas f lter replacement:

a. Physical damage or water immersion.

b. Low airf ow to masks, determined not to be caused by incorrect hose connections or low electrical power.

c. At beginning of combat conditions when use of CK (cyanogen chloride) or AC (hydrogen cyanide) is

expected.

d. As soon as possible after each AC or CK attack.

e. 5,000-mile vehicle overhaul (peacetime).

f. 1,500 hours of vehicle operation (approximately 5 months, wartime).

2. Conditions for M13 particulate f lter replacement:

a. Physical damage occurs.

b. M12A1 gas f lter is changed.

c. Particulate f lter becomes clogged, resulting in insuff cient airf ow.

END OF TASK

END OF WORK PACKAGE

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