PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

TM 5-4120-374-13

W-Weekly

Q-Quarterly

Interval

Item

Procedures: Check for and Have Repaired or

No.

Item to be Inspected

Adjusted as Necessary

a. Remove twelve (12) screws securing air filter cover to

Air Filter

bottom of air conditioner. Remove air filter cover and

gasket.

b. Slide air filter down and out of air conditioner.

Dry cleaning solvent, P-D-680 or P-S-661, used to clean parts is potentially

dangerous to personnel and property. Avoid repeated and prolonged skin contact.

Do not use near open flame or excessive heat. Flash point of solvent is 100F (38C).

c. Clean air filter with P-D-680 pr P-S-661 dry cleaning solvent

or warm soapy water and dry with low pressure compressed

air.

d. Inspect air filter for damaged or clogged condition. Replace

air filter if damage is indicated.

e. Inspect two (2) rubber pads on bottom of air filter for

damage. Replace pads if damage is indicated. Secure pads

with adhesive per specification MMM-A-121.

f. Dip or spray air filter with filter-kote or oil per specifica-

tion MlL-L-2104 Grade 20, 30 or better. Drain off excessive

oil before installation.

g. Slide air filter up into air conditioner.

h. Install gasket and air filter cover and secure with twelve

(12) screws.

4-6