Quantcast Pressure Testing Cooling System - TM-10-3930-673-20-20135

 

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Radiator Installation-CONT. - TM-10-3930-673-20-20134
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THERMOSTAT AND WATER OUTLET REPLACEMENT - TM-10-3930-673-20-20136
TM 10-3930-673-20-2
e. 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
TR00003
pressure loss.
(1)
Remove radiator cap (3) from radiator (4).
NOTE
3
Make sure the radiator is adequately
filled.
(2)
Attach cooling system pressurizer to radiator
4
filler neck.
(3)
Pressurize cooling system to between eight
and ten psi.
TR00801
(4)
Check cooling system for leakage.
(a)
Check radiator for visible leakage.
Replace radiator if leaks are present. Refer to Removal and Installation sections above.
(b)
Check all connections and hoses of cooling system for visible leakage. Replace leaking heater and radiator
hoses as required (Para 7-4).
NOTE
If leakage is not observed in Steps (a) and (b) above, continue to pressurize system for five minutes
and observe pressure gauge on cooling system pressurizer.
If pressure remains constant after five minutes 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. Refer to Direct Support Maintenance.
(5)
After test is completed, remove pressurizer from radiator filler neck and install radiator cap (3) on radiator
(4).
END OF TASK
7-25

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