PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) SEMIANNUAL SCHEDULE

TM 3-4240-284-20&P

PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) SEMIANNUAL SCHEDULE

NOTE

Perform these checks and services in the order listed before you perform functional testing.

Item To Be

Item

Inspected

Procedures

No.

Filter Housing

Inspect identfication and instruction plates. You must be able to read

them. Replace plates if necessary (p 2-77 and p 2-78).

Inspect outside surfaces for rust, chipped paint, or bare metal on painted

surfaces. Repaint or touchup as necessary (p 2-78).

Make sure that all parts are secure and that there is no loose or missing

hardware. Tighten loose hardware. Replace missing hardware.

Inspect cable assemblies for bare wires, broken insulation, broken or

Special Purpose

damaged connectors. Replace damaged cable assemblies (p 2-95 through

Electrical Cable

2-106).

Assemblies

Inspect cable assembly for bare wire, broken insulation, broken or

Main Fan Assembly

damaged connector. Replace damaged main fan assembly (p 2-79).

Cable

Airflow Valve

Inspect valve for damage and loose mounting hardware. Replace missing

mounting hardware. Replace damaged airflow valve (p 2-82).

Inspect unit for loose or missing mounting hardware. Tighten loose

Power Distribution

hardware. Replace missing hardware.

unit

Inspect for damaged or missing electrical covers. Replace power distribu-

tion unit if the covers are damaged or missing (p 2-85).

Gas-Particulate

WARNING

Filters

DO NOT throw away damaged

or unusable filters as

ordinary trash.

D O turn in damaged or unusable

filters to your hazardous

w a s t e management office or

Defense Reutilization and

M a r k e t i n g Office (DRMO).

Remove fiters (p 2-70) and check for physical or water damage.

Inspect housing seal and inner cover gasket for damage. Replace seal or

gasket if unserviceable (p 2-71).

Reinstall filters or install new filter (p 2-72).

Change 2

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