Radiator Cap: Testing and Inspection
Radiator CapINSPECTION
1) Attach the radiator cap tester to radiator cap.
2) Increase pressure until the radiator cap tester gauge pointer stops. Radiator cap is functioning properly if it holds the service limit pressure for 5 - 6 seconds. Replace the cap if it is opened under a pressure less than the service limit value.
Coolant filler tank side
Specification:
93 - 123 kPa (0.95 - 1.25 kg/cm2, 14 - 18 psi)
Service limit:
83 kPa (0.85 kg/cm2, 12 psi)
Radiator side
Specification:
122 - 152 kPa (1.24 - 1.55 kg/cm2, 18 - 22 psi)
Service limit:
112 kPa (1.14 kg/cm2, 16 psi)
CAUTION:
- Be sure to remove foreign matter and rust from the cap in advance. Otherwise, results of pressure test will be incorrect.
- Do not confuse the cap of coolant filler tank and cap of radiator.