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 TM 9-2815-226-34-2
3-56. INSPECT OIL COOLER CORE
WARNING
P-D-680 SOLVENT IS POTENTIALLY DANGEROUS. AVOID PROLONGED OR
REPEATED CONTACT WITH SKIN. KEEP AWAY FROM FLAME OR EXCESSIVE
HEAT.
a. Immerse cooler core in cleaning solvent.
b. Let stand in solvent for one hour.
c. Force solvent around outside of tubes until clean.
d. After cleaning, flush cooler core with hot water.
e. If oil tubes are badly clogged, clean as follows:
WARNING
ADDITIONAL CLEANING WITH CHEMICALS MUST BE DONE IN OPEN AIR OR
WELL VENTILATED ROOM.
TOXIC EFFECT OF CHEMICALS CAN CAUSE
PERSONAL HARM. WEAR PROTECTIVE CLOTHING AND GOGGLES.
(1) Immerse cooler core in alkaline solution and circulate solution around tubes.
(2) After cleaning, flush thoroughly with hot water.
f. Clean housing and support oil passages by directing solvent through ports in reverse direction of normal flow.
WARNING
COMPRESSED AIR USED FOR CLEANING PURPOSES WILL NOT EXCEED 30 PSI
(207 KPA). USE ONLY WITH EFFECTIVE CHIP GUARDING AND PERSONAL
PROTECTIVE EQUIPMENT (GOGGLES, SHIELD, GLOVES, ETC.).
g. Blow compressed air through oil passages to clear of loose foreign matter.
3-246
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