Testing and Inspection of Radiator for HS 250h L4-24L Hybrid
Radiator: Testing and Inspection
2AZ-FXE COOLING: RADIATOR: ON-VEHICLE INSPECTION
1. CHECK RESERVE TANK CAP (for Engine)
(a) Measure the valve opening pressure.
(1) If there are water stains or foreign matter on O-ring 1, clean it with water and finger scouring.
(2) Check that O-ring 1 is not deformed, cracked or swollen.
(3) Apply engine coolant to O-ring 1 and rubber packing 2 before using a radiator cap tester.
(4) When using the cap tester, tilt it upward 30 degrees or more.
(5) Pump the cap tester several times, and check the maximum pressure*1.
Text in Illustration
Pumping speed:
1 pump per second
HINT
*1: Even if the cap cannot maintain the maximum pressure, it is not a defect.
Judgment Criterion:
(6) If the maximum pressure is less than the minimum standard value, replace the reserve tank cap.