RADIATOR PRESSURE TESTING - CONTINUED
PRESSURE TESTING - CONTINUED
Install pressurizing pump at location where plug (2)
Inspect radiator for outside leakage. Check all cooling system connections and hoses to ensure there is no external
Pump air into radiator until pressure reading on gage reads 10 psi (69 kPa).
If no external leakage is evident and pressure reading on gage remains constant for five minutes, there is no internal
leakage in system.
If no external leakage is evident and pressure reading on gage falls, there is internal leakage. Cooling system may
If no internal or external leakage is found, increase pressure to 14 psi (96 kPa). Observe if there is coolant flow from
overflow tube. Relief valve must open at 13 psi (90 kPa). If no coolant is present through overflow tube, replace relief
valve (WP 0062 00).
When test is completed, open bleed valve on pump to release pressure in radiator.
Remove pressurizing pump from radiator and install plug (2). Tighten plug.
Fill cooling system, if required (WP 0060 00).
END OF WORK PACKAGE