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 TM 55-1905-220-14-5
3-74. LUBE OIL COOLER-MAINTENANCE INSTRUCTIONS (Cont).
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 pass-
carbon and
side)
ages
sludge.
WARNING
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, circulate an Oakite
or alkaline 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.
3-1308
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