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 TM 55-1905-220-14-5
3-74. LUBE OIL COOLER-MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
TESTING-PRESSURE (Cont)
4. Attach air hose (26)
Apply 75-150
to oil cooler core
psi (517-1034
(16).
kPa) air pressure.
5. Submerge oil cooler
Any leaks will
core in a tank of
be indicated by
heated water (180
F
air bubbles
in (82 )).
C
the water.
3-1311
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