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TM 5-2410-237-23
RADIATOR PRESSURE TESTING - CONTINUED
0066 00
PRESSURIZED TESTING - CONTINUED
2.
Remove filler cap (2) to inspect coolant level. Ensure
3
that coolant level is within 1/2 in. (13 mm) of bottom
of fill pipe. Add coolant as needed (WP 0065 00).
1
3.
Install filler cap (2) and tighten.
4.
Remove plug (3) from top of radiator.
2
387-204
5.
Mount a pressurizing pump at location where plug (3)
was removed.
6.
Inspect radiator for outside leakage. Check all cooling
system connections and hoses to ensure there is no
external leakage.
3
7.
Pump air into radiator until pressure reading on gage
reads 14 psi (97 kPa).
387-212
RELIEF
VALVE
PRESSURIZING
PUMP
8.
If no external leakage is evident and pressure reading on gage remains constant for five minutes, there is no internal
leakage in system.
9.
If no external leakage is evident and pressure reading on gage falls, there is internal leakage. Repair engine as needed.
10.
If no leakage or external leakage is found, pump more air into radiator. Relief valve must open between 15-18 psi
(103-124 kPa). If not, replace valve (WP 0067 00).
11.
When test is completed, open bleed valve on pump to release pressure in radiator.
12.
Remove pressurizing pump from radiator and install plug (3). Tighten plug.
13.
Fill cooling system, if required (WP 0065).
END OF WORK PACKAGE
0066 00-2

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