PRESSURE TESTING COOLING SYSTEM - TM-10-3930-660-24-10353

TM 10-3930-660-24-1

RADIATOR MAINTENANCE - CONTINUED

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PRESSURE TESTING COOLING SYSTEM

NOTE

If cooling system pressure loss is suspected, check radiator cap first. Any foreign material or deposits on

cap, cap seal, or radiator opening can cause pressure loss.

Remove radiator cap (3).

NOTE

Make sure the radiator is adequately filled.

Attach cooling system pressurizer to radiator filler

neck.

Pressurize cooling system to between 8 and 10 psi (55

and 69 kPa).

Check cooling system for leakage.

Check radiator for visible leakage. Replace radiator if

leaks are present. Refer to Removal and Installation.

Check all connections and hoses of cooling system for

visible leakage.

NOTE

If leakage is not observed in steps 5 and 6

above, continue to pressurize system for five

minutes and observe pressure gage on cool-

ing system pressurizer.

If pressure remains constant after five min-

utes of pressurization, radiator and cooling

system do not have leakage.

If pressure lowers during five minutes of

pressurization, internal cooling system leak

in engine or transmission is present.

After test is completed, remove pressurizer from radi-

ator filler neck and install radiator cap (3).

409-237

If removed from storage position, install the load

brackets at rear of vehicle (TM 10-3930-660-10).

END OF WORK PACKAGE

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