Radiator Cap; Radiator Cap Valve; Negative Pressure Valve; Preparation - Mazda MX-5 1990 Workshop Manual

E
RADIATOR CAP
PREPARATION
SST
49 9200 145 0~
Adapter set,
radiator cap
tester
E-6
RADIATOR CAP
For inspection of 49 9200 147
&J
For inspection of
radiator cap radiator cap
valve Adapter B
(Part of
49 9200 145)
INSPECTION
Radiator Cap Valve
valve
05UOEX-014
1. Remove foreign material (such as water residue) from be-
tween the radiator cap valve and the valve seat.
2. Attach the radiator cap to a radiator cap tester (commer-
cially available) with the SST.
Appl~
pressure gradually to
74-103 kPa (0.75-1.05 kg/em , 11-15 psi).
3. Wait about 10 seconds. Verify that the pressure has not
decreased.
Negative Pressure Valve
1. Pull the negative pressure valve to open it. Verify that it
closes completely when released.
2. Check for damage on the contact surfaces and for cracked
or deformed seal packing.
3. Replace the radiator cap if necessary.
-.