Inspection and Cleaning

RADIATOR

ON-VEHICLE INSPECTION
1. INSPECT RADIATOR CAP SUB-ASSEMBLY

NOTICE:
^ If the reservoir cap has contaminations, always rinse it with water.
^ Before using a radiator cap tester, wet the relief valve and pressure valve with engine coolant or water.
^ When performing procedure "A" and "B" below, keep the tester at an angle of over 30° above the horizontal.





a. Using a radiator cap tester, slowly pump the tester and check that air is being released from the vacuum valve (procedure "A").
Pump speed: 1 push every 3 seconds or more

NOTICE: Push the pump at a constant speed. If air is not being released from the vacuum valve, replace the reservoir cap.

b. Pump the tester and measure the relief valve opening pressure (procedure "B").
Pump speed: 1 push within 1 second

NOTICE: The specified pump speed should be followed for the first pump only. It will close the vacuum valve. Once the vacuum is closed, the pump speed can be reduced.

Standard opening pressure: 93 to 122 kPa (0.95 to 1.25 kgf/cm2, 13.4 to 17.6 psi)
Minimum opening pressure: 78 kPa (0.8 kgf/cm2, 11.4 psi)

HINT: Use the tester's maximum reading as the opening pressure. If the maximum reading is less than the minimum opening pressure, replace the radiator cap.

ON-VEHICLE CLEANING





1. INSPECT RADIATOR ASSEMBLY
a. Inspect the fins blockage.
(1) Check that the radiator and condenser are not blocked with leaves, dirt, or insects. Clean the hose connections. If the fins are clogged, wash them with water or a steam cleaner. Dry with compressed air.

NOTICE: If the distance between the steam cleaner and the core is too close, the fins may become damaged. Keep this injection distance.

Standard:

If the fins are bent, straighten them with a screwdriver or pliers. Never apply water directly onto the electronic components.