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TM 9-2815-220-24
0072 00
1. See Work Package 0028 for Standard Cleaning Procedures.
2. Oil cooler cleaning instructions.
a. External surfaces of coolers may be cleaned using oil cooler cleaning tool (item 20,
Cleaning Compound Solvent - Compressed air
b. Clean thoroughly and blow dry with compressed air at 15 psi pressure.
c. Flush oil cooler assemblies with cleaning compound solvent (item 8, WP 0173).
(1) Blow dry with compressed air at a pressure of 15 psi.
All parts must be inspected with care. Replace parts if damage or wear exceeds allowable
1. See Work Package 0028 for Standard Inspection Procedures.
2. Inspect oil cooler assemblies for dented tubing or bent fins.
a. Carefully straighten bent fins with a flat tip screwdriver or other suitable tool.
b. If fins cannot be straightened, return cooler to depot for disposition.
3. Inspect gasket contact surfaces for burs and raised metal.
a. Using crocus cloth (item 9, WP 0173) or other suitable medium, blend out burs and raised
metal. If damage will prevent gasket from sealing, return cooler to depot for disposition.
Do not attempt to repair leaks in oil coolers by soldering. Soldering is
not an acceptable repair because of the high operating temperature
and pressure. Damage to equipment may occur.
4. Pressure check coolers.
a. Seal all oil cooler openings.
b. Pump engine oil (OE) (item 27, WP 0173) into coolers at 400 psi hydrostatic pressure.
(1) Coolers must hold 400 psi for ten minutes without loss of pressure.
(2) Return leaking coolers to depot for disposition.
c. Release pressure, drain oil, and flush with cleaning compound solvent (item 8, WP 0173).
5. Inspect engine and transmission oil cooler thermostatic bypass valves for stripped or damaged
threads. If found, replace with new valve.
WP 0072 00-6


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