Maxima V6-3.5L (VQ35DE) (2007)
Radiator Cap: Testing and Inspection
CHECKING RADIATOR CAP
1. Inspect the radiator cap.
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Replace the cap if the metal plunger cannot be seen around the edge of the black rubber gasket.
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Replace the cap if deposits of waxy residue or other foreign material are on the black rubber gasket or the metal retainer.
NOTE: Thoroughly wipe out the radiator filler neck to remove any waxy residue or foreign material.
2. Pull the negative-pressure valve to open it and check that it closes completely when released.
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Check that there is no dirt or damage on the valve seat of the radiator cap negative-pressure valve.
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Check that there are no abnormalities in the opening and closing conditions of the negative-pressure valve.
3. Check radiator cap relief pressure using Tool.
Tool number: EG17650301 (J-33984-A)
Standard: 78 - 98 kPa (0.8 - 1.0 kg/cm2, 11 - 14 psi)
Limit: 59 kPa (0.6 kg/cm2, 9 psi)
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When connecting the radiator cap to the tester, apply water or coolant to the cap seal surface.
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Replace the radiator cap if there is an abnormality in the negative-pressure valve, or if the open-valve pressure is outside of the standard
values.