Inspection and Cleaning
RADIATORON-VEHICLE INSPECTION
1. INSPECT RADIATOR CAP SUB-ASSEMBLY
NOTICE:
^ If the radiator cap is contaminated, rinse it with water.
^ Before using a radiator cap tester, wet the relief valve and pressure valve with engine coolant or water.
^ When performing these 2 steps, keep the tester at an angle of 30° or more above the horizontal.
a) Using a radiator cap tester, slowly pump and check that air is coming from the vacuum valve.
Pumping speed: 1 push every 3 seconds or more
NOTICE: Push the pump at a constant speed.
If air does not come from the vacuum valve, replace the radiator cap.
b) Pump the tester, and then measure the relief valve opening pressure.
Pumping speed: 1 push within 1 second
NOTICE: The above pumping speed is for the first pumping only (in order to close the vacuum valve). After the first pumping, the pumping speed can be reduced.
Standard opening pressure: 74 to 103 kPa (0.75 to 1.05 kgf/cm2, 10.7 to 14.9 psi)
Minimum opening pressure: 59 kPa (0.6 kgf/cm2, 8.6 psi)
If the opening pressure is less than the minimum, replace the radiator cap.
HINT: Use the tester's maximum reading as the opening pressure.
ON-VEHICLE CLEANING
1. CHECK FIN FOR BLOCKAGE
a) If the fins are clogged, wash them with water or a steam cleaner, and then dry them with compressed air.
NOTICE:
^ If the fins are bent, straighten them with a screwdriver or pliers.
^ Be careful not to expose electronic components to water.
^ If the distance between the steam cleaner and core is too small, there is a possibility of damaging the fins, so keep these injection distances.
Standard pressure
Standard pressure:
