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 TM 55-1905-219-14-6
3-149. LUBE OIL COOLER - MAINTENANCE INSTRUCTIONS.
a.
In order to perform its functions satisfactorily the lubricating oil must be kept within the proper temperature limits.
If the
oil is too cold, it will not flow freely. If the oil is too hot, it cannot support the bearing loads, or carry away enough
heat, and it
may result in too great an oil flow.
b. In performing its lubricating and cooling functions, the oil absorbs a considerable amount of heat and this heat
must be dissipated
by an oil cooler.
c. To assure engine lubrication if the oil cooler becomes clogged, a by-pass valve located at the oil inlet to the oil
cooler, by-passes
the oil around the oil cooler directly to the oil gallery in the cylinder block.
d.
The oil cooler core is sealed to prevent the coolant from getting into the oil.
This task covers:
a.
Inspection
c. Cleaning
e.
Repair
b.
Removal
d. Testing
f.
Installation
INITIAL SETUP
Test Equipment
References
Paragraph
None
Lube Oil Filter
Equipment
Special Tools
Condition
Condition Description
None
None
Material/Parts
Special Environmental Conditions
Gasket kit P/N 5193114
Do not drain oil into bilges.
Use the oil/water separation
and recovery system to collect
drained oil. Dispose of properly.
Personnel Required
General Safety Instructions
1
Observe WARNINGS in procedure.
3-2575
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