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16–4
Radiator Cap Tester
30_ or more
Radiator Cap
Turn
Hole
AVENSIS REPAIR MANUAL (RM1018E)
COOLING
–
COOLING SYSTEM (1ZZ–FE/3ZZ–FE)
(a)
Using a radiator cap tester, slowly pump the tester and
check that air is coming from the vacuum valve.
Pump speed: 1 push / 3 seconds or more
NOTICE:
Push the pump at a constant speed.
If air is not coming from the vacuum valve, replace the radiator
cap.
(b)
Pump the tester and measure the relief valve opening
pressure.
A51912
NOTICE:
The following pump speed is for the first pump only (in or-
der to close the vacuum valve). After the first pump, the
pump speed can be reduced.
Pump speed: 1 push within 1 second
Standard opening pressure:
74 to 103 kPa (0.75 to 1.05 kgf/cm
Minimum opening pressure:
59 kPa (0.6 kgf/cm
If the opening pressure is less than minimum, replace the radia-
tor cap.
HINT:
Use the tester's maximum reading as the opening pressure.
3.
INSPECT WATER PUMP ASSY
(a)
Visually check the drain hole for coolant leakage.
If leakage is found, replace the water pump.
(b)
Turn the pulley, and check that the water pump bearing
moves smoothly and does not make noise.
If necessary, replace the water pump.
A79816
http://vnx.su
2
, 10.7 to 14.9 psi)
2
, 8.6 psi)
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