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 TM 55-1905-219-14-5
3-74. LUBE OIL COOLER - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARK
CLEANING
5. Oil
a. Oil
1. Circulate a solution
Use a force
cooler
cooler
of trichloroethylene
pump to remove
(oil
through the core pass-
carbon and
side)
ages
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. If oil passages are
badly clogged, circu-
late an Oakite or alka-
line solution through
the oil cooler core.
Flush thoroughly with
clean hot water.
b. Oil
1. Immerse oil cooler
Clean oil
cooler
core (water side) in
cooler (oil
(water
the following
side) first.
side)
solution:
1/2 lb. (0.227 kg)
Cleaning action
of oxlic acid to
evidenced by
each 2-1/2 gals.
bubbling and
(9.46 1) solution.
foaming.
Composed of 1/3
muriatic acid and
2/3 water.
2. Carefully watch pro-
30 to 60 sec-
cess and when bub-
onds after oil
bling stops remove oil
cooler core is
cooler core.
immersed.
3-1326
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