Section IV. OPERATOR/CREW MAINTENANCE PROCEDURES

TM 10-3930-634-12

Section IV. OPERATOR/CREW MAINTENANCE PROCEDURES

(a) The primary filter element can be

3-7. Oil Filler Pipe and Cap

cleaned by either reverse flushing with com-

WARNING

pressed air or by washing in water. Compressed

air is recommended when the element is to be

Dry cleaning solvent, P-D-680, used to

reused immediately. An element that has been

clean parts is potentially dangerous to

washed in water should be dried thoroughly be-

personnel and property. Do not use near

fore reuse. Water is a better cleaning agent and

open flame or excessive heat. Flash point

should be used when soot or oil has plugged the

of solvent is 100 F. -138 F.

element. The filter element should be replaced af-

ter six cleanings or annually, whichever occurs

a. Cleaning. Remove left engine side panel for

first. The safety filter element must be replaced

access to oil filler pipe and cap. Clean pipe and

at every third primary element service.

cap (fig. 4-4) with an approved cleaning solvent.

NOTE

b. Inspection. Inspect cap for deterioration. Re-

place defective or damaged seal. Inspect filler

The safety filter element should not be

pipe for cracks.

cleaned and reused.

WARNING

(b) When using compressed air, direct the

air from the element to the outside, being careful

If NBC exposure is suspected, all air fil-

ter media should be handled by personnel

not to rupture the element. Be sure that the O-

ring is properly sealed and that no leaks exist. Be

wearing protective equipment. Consult

sure that the filter restriction indicator reads in

your unit NBC Officer or NBC NCO for

green with the engine running.

appropriate handling or disposal instruc-

tions.

(c) When using water to clean the element,

soak in a detergent and water for an least 15 min-

3-8. Engine Air Cleaner

utes. Rinse with a hose until water runs clean.

The maximum allowable water pressure is 40 psi.

a. Inspection. Unhook three latches and remove

the cup. Remove the elements and inspect for ex-

(d) Allow the element to dry thoroughly

cessive accumulation of dirt. Remove the cup

before using. Do not use compressed air or light

dust trap and inspect for excessive accumulation

bulbs to dry a wet element.

of dust. Check air filter restriction indicator for

normal reading.

(3) Inspection.

b. Service. Refer to figure 3-1 and service the air

(a) Inspect the filter element by placing a

cleaner.

bright light inside and rotating the element

slowly. If any rupture or holes are discovered, re-

c. General. When the air cleaner restriction in-

place element.

dicator is red, servicing of the primary filter is re-

quired.

(b) Inspect the air cleaner body, inlet stack

and rain cap for damage. Replace defective parts.

(1) Removal. Remove the air cleaner filter ele-

(4) Installation. Refer to figure 3-1 and rein-

ment as shown in figure 3-1.

stall the air cleaner filter elements. Reset the re-

striction indication to green.

(2) Cleaning.

3-4 Change 2