CLEANING -624880419

TM 5-2420-222-20-1

ENGINE COOLANT HEATER (OPTIONAL) - CONTINUED

ACTION

LOCATION

ITEM

REMARKS

CLEANING

NOTE

For more information on how to clean parts, go to General Maintenance Instructions (page 2-137).

WARNING

Drycleaning solvent P-D-680 is toxic and flammable. Wear protective goggles and gloves and use

only in a well ventilated area. Avoid contact with skin, eyes, and clothes and don't breathe vapors.

Do not use near open flame or excessive heat. The flashpoint is 100F to 1380F (380 to 590C). If

you become dizzy while using cleaning solvent, get fresh air immediately and get medical aid. If

contact with eyes is made, wash your eyes with water and get medical aid immediately.

Engine coolant

a. Using clean rag dampened with dry-

heater (1)

cleaning solvent, wipe clean.

b. Using clean water, flush coolant passage.

c. Using clean, dry rags, wipe dry. ML

10.

All other parts

a. Clean in drycleaning solvent.

b. Using clean, dry rags, wipe dry.

INSPECTION/REPLACEMENT

NOTE

For more information on how to inspect parts, go to General Maintenance Instructions (page 2-137).

Replace defective parts as needed.

11.

All metal parts

Look for cracks, breaks, bends, and corrosion

damage.

12.

All threaded parts

Look for damaged threads.

13.

Engine coolant

a. Look for dents and excess build-up of

heater (1)

deposits which would restrict coolant flow.

b. Look at cord for cracks, bare wires, and loose or

damaged plug.

2-358