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RADIATOR CAP INSPECTION [ZJ, ZY]

id011200801519

  Warning

  • Never remove the radiator cap while the engine is running, or when the engine and radiator are hot. Scalding engine coolant and steam may shoot out and cause serious injury. It may also damage the engine and cooling system.
  • Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise to the first stop. Step back while the pressure escapes.
  • When you are sure all the pressure is gone, press down on the cap using the cloth, turn it, and remove it.

1. Clean the radiator cap negative pressure valve and the sealed part.

2. Verify that there are no cracks or peeling on the radiator cap seal.

  • If there are any cracks or peeling, replace the radiator cap.

3. Attach the radiator cap to the radiator cap tester.

4. Hold the radiator cap downward and apply pressure gradually. Verify that the pressure is maintained for approx. 10 s within the specification.

  • If the pressure is not maintained stable within the specification, replace the radiator cap.

Radiator cap valve opening pressure

  93.2-122.6 kPa {0.95-1.25 kgf/cm2, 13.5-17.8 psi}