Notice: Pressure above 139 kPa (20psi) should not be used when pressure testing the cooling system. Pressures over 138 kPa (20) psi will damage the radiator.
Some cores leaks are detected by adding water to the radiator. Clean the core using the following procedure in order to locate the damaged area:
- Remove the dirt and the insects from the fins with a common water hose that does not have a nozzle. Excessive water pressure could damage the fins.
- Scrub the core with a soft-bristle brush using clean hot water or hot water with a mild detergent.
On-Vehicle Pressure Testing
Pressure-test the aluminum-plastic radiator with the J 24460-01 . While the system is at a cool temperature, remove the radiator cap. Connect the gauge and apply the normal system operating pressure. Do not exceed 138 kPa (20 psi). Watch the gauge needle for an indication of a leak. Examine the radiator and other cooling system parts for escaping coolant.
Repair the hose and the hose connections as required. Inspect the radiator cap in order to ensure that the cap will maintain the correct pressure.
If the radiator leaks during the pressure test, mark the leak area.
