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 TM 55-1905-220-14-6
3-149. LUBE OIL COOLER - MAINTENANCE INSTRUCTIONS.
LOCATION
ITEM
ACTION
REMARKS
TESTING - PRESSURE
4. Attach air hose (33)
Apply 75-150
to oil cooler core
psi (517-1034
(18).
kPa) air pres-
sure.
5. Submerge oil cooler
Any leaks will
core in a tank of
be indicated by
heated water (1800F)
air bubbles in
(82 ).
C
the water.
3-2554
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