Radiator: Testing and Inspection

RADIATOR

ON-VEHICLE INSPECTION





1. CHECK RADIATOR CAP SUB-ASSEMBLY
a. Measure the valve opening pressure.
(1) If there are water stains or foreign matter on rubber packing 1, 2 or 3, clean the part(s) with water and finger scouring.
(2) Check that 1, 2 or 3 is not deformed, cracked or swollen.
(3) Check that 3 and 4 are not stuck together.
(4) Apply engine coolant to 2 and 3 before using the radiator cap tester.





(5) When using the cap tester, tilt it more than 30 degrees.
(6) Pump the cap tester several times, and check the maximum pressure*1.
Pumping speed: 1 pump per second

HINT: *1: Even if the cap cannot maintain the maximum pressure, it is not a defect.

Judgment Criterion:

If the maximum pressure is less than the minimum standard valve, replace the radiator cap sub-assembly.

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.





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