Radiator: Testing and Inspection

CAUTION: Do not leak test the aluminum radiator in the same water that copper/brass radiators are tested in. Flux and caustic cleaners may be present in the tank and will affect the aluminum. A separate clean test tank is necessary, if possible, for aluminum radiators. If conditions do not allow for a separate test tank, clean the test tank thoroughly each time before testing an aluminum radiator.

^ Clean the radiator before leak testing it to prevent contamination of the test tank.
^ Always install plugs in the transmission oil cooler fittings before leak testing or cleaning radiator.
^ Leak test the radiator in clean water with 137 kPa (20 psi) of air pressure.
^ Repair or replace as required.