On-Vehicle Inspection

2TR-FE COOLING: RADIATOR: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION





1. CHECK RADIATOR CAP SUB-ASSEMBLY
(a) Using a radiator cap tester, slowly pump and check that air comes from the vacuum valve.
Pumping speed:
1 push every 3 seconds or more
NOTICE: Push the pump at a constant speed.
If air does not come from the vacuum valve, replace the radiator cap.
(b) Pump the tester and measure the relief valve opening pressure.
Standard opening pressure:
93 to 123 kPa (0.95 to 1.25 kgf/cm2, 13.5 to 17.8 psi)
Minimum opening pressure:
78 kPa (0.8 kgf/cm2, 11.4 psi)
NOTICE: The above pumping speed is for the first pumping only (in order to close the vacuum valve). After the first pumping, the pumping speed can be reduced.
HINT: Use the tester's maximum reading as the opening pressure. If the opening pressure is less than the minimum, replace the radiator cap.