Procedures

RADIATOR

ON-VEHICLE INSPECTION





1. CHECK RADIATOR CAP

NOTICE:
^ If the radiator cap contains foreign matter, rinse it with water.
^ Before using a radiator cap tester, wet the relief valve and pressure valve with engine coolant or water.
^ When performing the next 2 steps, keep the tester at an angle of 30° or more above horizontal.

a. Slowly pump the radiator cap tester, and then check that air is being released from the vacuum valve.
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 radiator cap.

b. Pump the tester and measure the relief valve opening pressure.
Pump speed: 1 push within 1 second

NOTICE: The specified pump speed is for the first pump only. It will close the vacuum valve. Once the vacuum valve is closed, the pump speed can be reduced.
Standard opening pressure: 93 to 123 kPa (0.95 to 1.25 kgf/cm2, 13.5 to 17.8 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. CHECK FINS FOR BLOCKAGE
a. Check that the radiator and condenser are not blocked with leaves, dirt, or insects. Clean the hose connections. If the fins are blocked, wash them with water or a steam cleaner.

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

Standard Injection Distance:

Standard Injection Distance:

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

b. Dry the fins with compressed air.