Radiator Cap Inspection (3.0L); Negative Pressure Valve Inspection (3.0L) - Mazda B-Series 1997 Workshop Manual

RADIATOR CAP
RADIATOR CAP
INSPECTION
Radiator Cap Valve
1. Remove all foreign matter (such as \ ~ a t e r residue) from
between the radiator cap valve and the valve seat.
2. Attach the radiator cap to a radiator cap tester (commer-
cially available) and apply pressure gradually to 83 kPa
(0.9 kgfIcm2, 12 psi).
3.
Verify that the pressure is held for at least 10 seconds.
Negative Pressure Valve
1.
Pull the negative pressure valve to open it. Verify that it
closes completely when released.
2.
Check for damage to the contact surfaces and for cracked
or deformed seal packing.
3.
Replace the radiator cap if necessary.