Previa Van RWD L4-148.8 2438cc 2.4L DOHC SC (2TZ-FZE) (1996)
Radiator: Testing and Inspection
Pressure Test Radiator
CHECK RESERVOIR TANK CAP
Using radiator cap tester, pump the tester until relief valve opens. Check that valve opens between 0.75 kg/cm2 (10.7 psi, 74 kPa) and 1.05
kg/cm2 (15 psi, 103 kPa).
Check that pressure gauge does not drop rapidly when pressure on cap is below 0.6 kg/cm2 (8.5 psi, 58 kPa).
If either check is not within limit, replace cap.
CHECK COOLING SYSTEM FOR LEAKS
(a) Fill the reservoir tank with coolant and attach a radiator cap tester.
(b) Warm up the engine.
(c) Pump it to 1.2 kg/cm2 (17.1 psi, 118 kPa), check that pressure does not drop.
If the pressure drops, check for leaks from the hoses, radiator or water pump. If no external leaks are found, check the heater core, block and head.
(d) Drain the coolant from reservoir tank to the "FULL" level.