Leak Testing Procedure (On Vehicle)
Tools Required
J 24460-01 Cooling
System and Cap Pressure Tester
Caution: Under pressure, the temperature of the solution in the radiator can
be considerably higher, without boiling. Removing the radiator cap while the
engine is hot (pressure is high), will cause the solution to boil instantaneously,
with explosive force. The solution will spew out over the engine, fenders,
and the person removing the cap. Serious bodily injury may result. Flammable
antifreeze, such as alcohol, is not recommended for use at any time. Flammable
antifreeze could cause a serious fire.
Caution: In order to help avoid being burned, do not remove the radiator cap
while the engine and the radiator are hot. Scalding fluid and steam can be
blown out under pressure if the cap is removed too soon.
- After the system has cooled, remove the radiator/surge
tank pressure cap.
- Connect the cooling system
tester J 24460-01
to the
radiator/surge tank.
- Apply normal system operating pressure. Do not exceed 138 kPa
(20 psi).
- Watch the gauge needle
for an indication of a leak. Examine all cooling system connections and components,
including the radiator and the heater core, for leaking coolant.
- Tighten the hose connections or repair as required.
- Check the radiator/surge
tank cap with J 24460-01
in order to ensure the cap maintains the correct pressure.
- If the radiator leaks during the pressure test, mark the leak
area so the leak can be located once the radiator has been removed from the
vehicle.
Testing Procedure (Off Vehicle)
Tools Required
J 24460-01 Cooling
System and Cap Pressure Tester
Notice: Do not use boil-out tanks or any other tank that has been used for copper
or brass radiators. The remaining solutions or chemicals in these tanks could
cause radiator failure.
- Plug the inlet and outlet tubes. Make sure the drain cock is closed.
- Attach the J 24460-01
to the radiator.
- Apply pressure to the radiator. Do not exceed 138 kPa (20 psi)
of pressure.
- Observe the gauge for any pressure loss.
- Run water over the repair area and look for any bubbles. If a
large tank is available, the radiator can be submerged in order to check for
air bubbles.