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 TM 55-1905-220-14-6
3-149. LUBE OIL COOLER - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
CLEANING
5. Oil
a. Oil
1. Circulate a solution
Use a force
cooler
cooler
of trichloroethylene
pump to remove
(oil
through the core pas-
carbon and
side)
sages.
sludge.
Cleaning solvent trichloroethylene, used to clean parts, is
potentially dangerous to personnel and property. Use in the open
or a well ventilated room to prevent toxic fumes from building up.
2. Clean the oil cooler
core before the sludge
hardens.
3. Oil passages are
Circulate an
badly clogged.
Oakite or alka-
line solution
through the oil
cooler core.
Flush thorough-
ly with clean,
hot water.
b. Oil
1. Immerse oil cooler
Clean oil cool-
cooler
core (water side)
er (oil side)
(water
in the following
first.
side)
solution:
a. 1/2 lb. (0.227
Cleaning action
kg) of oxalic
evidenced by
acid to each
bubbling and
2-1/2 gals.
foaming.
(9.46 L)
solution.
b. Composition of
1/3 muriatic
acid and 2/3
water.
3-2551
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