Radiator On-Vehicle Inspection

Measure the valve opening pressure.

1. If there are water stains or foreign matter on rubber packing 1, 2 or 3, clean by using water and finger scouring.
   

2. Check that rubber packing 1, 2 and 3 are not deformed, cracked or swollen.
   

3. Check that rubber packing 3 and 4 are not stuck together.
   

4. Apply engine coolant to rubber packing 2 and 3.
   





5. When using the cap tester, tilt it more than 30°.
   

   Text in Illustration

   *1	Radiator Cap
   *2	Radiator Cap Tester
   *a	More than 30°

6. Pump the cap tester several times, and check the maximum pressure*.
   

   Pump speed:

   1 pump per second
   

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

   Judgment Criterion:

   Item	Specified Condition
   Standard value (for brand-new cap)	93 to 123 kPa (1.0 to 1.3 kgf/cm2, 13.5 to 18 psi)
   Minimum standard value (after using cap)	79 kPa (0.8 kgf/cm2, 11.4 psi)

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

Check that the radiator and condenser are not blocked with leaves, dirt, or insects. Clean the hose connection. If the fins are clogged, wash them with water or a steam cleaner and dry with compressed air.

NOTICE:

1. If the distance between the steam cleaner and the core is too close, there is a possibility of damaging the fins, so maintain the following injection distance.
   

   Standard Injection Distance:

   Specified Condition	Injection Pressure
   300 mm (11.8 in.)	2942 to 4903 kPa (30.0 to 50.0 kgf/cm2, 427 to 711 psi)
   500 mm (19.7 in.)	4903 to 7845 kPa (50.0 to 80.0 kgf/cm2, 711 to 1138 psi)

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

Dry the fins with compressed air.