Table 2-1. Preventive Maintenance Checks and Services (PMCS) Semiannual Schedule

TM 3-4240-309-20&P

NOTE

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

Table 2-1. Preventive Maintenance Checks and Services (PMCS) Semiannual Schedule

Item

Procedures

No.

Item to be Inspected

M87 Gas-Particulate

Filter Unit

Housing Unit

Inspect instruction plates. You must be able to read them. Replace plates if

necessary (p. 2-107).

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

Repaint or touch up as necessary (p. 2-106).

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

Tighten loose hardware. Replace missing hardware.

Main fan assembly

Inspect cable assembly for bare wires, broken insulation, or broken connector.

Replace damaged main fan assembly (p. 2-111).

cable

Inspect unit for loose or missing mounting hardware. Tighten loose hardware.

Compartment

control module

Replace missing hardware.

Inspect warning plate. Warning plate must be legible. Replace plate if necessary.

Inspect unit for loose or missing mounting hardware. Tighten loose hardware.

Power distribution

unit

Replace missing hardware.

Inspect for damaged or missing electrical covers. Replace power distribution unit

if the covers are damaged or missing (p. 2-95).

WARNING

Gas-particulate

falters

DO NOT throw away damaged or unusable filters

a s ordinary trash.

D O turn in damaged or unusable filters to

y o u r hazardous waste management office or

D e f e n s e Reutilization and Marketing Office

(DRMO).

Remove falters (p. 2-91 and p. 2-92) and check for physical or water damage.

Inspect housing seal and inner cover seal for cracks, rips, hardening, etc. Replace

seal if damaged (p. 2-93). Reinstall falters or install new falters (p. 2-91 and

p. 2-93).

Airflow valve

Inspect valve for damage and loose mounting hardware. Replace missing

mounting hardware. Replace damaged airflow valve (p. 2-119).

M 10 Protective

Inspect instruction plates. Instruction plates must be legible. Replace plate if

Entrance

necessary (p. 2-80).

Inspect outside surface for chipped paint or bare metal on painted surfaces.

Repaint or touch up as necessary (p. 2-73).

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

Tighten loose hardware (p. 2-83). Replace missing hardware.

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