4 Runner 2WD L4-2.7L (2TR-FE) (2010)
Radiator: Testing and Inspection
2TR-FE COOLING: RADIATOR: ON-VEHICLE INSPECTION
1. INSPECT RADIATOR CAP SUB-ASSEMBLY
CAUTION:
Do not remove the radiator cap while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released
and cause serious burns.
(a) Measure the valve opening pressure.
(1) If there are water stains or foreign matter on rubber packing 1, 2 or 3, clean it by using water and finger scouring.
(2) Check that rubber packing 1, 2 and 3 are not deformed, cracked or swollen.
(3) Check that rubber packing 3 and 4 are not stuck together.
(4) Apply engine coolant to rubber packing 2 and 3.
(5) When using the cap tester, tilt it more than 30°.
(6) Pump the cap tester several times and check the maximum pressure.*1
Pumping speed:
1 pump per second
HINT
*1: Even if the cap cannot maintain the maximum pressure, it is not necessarily defective.
Standard Judgment Criterion:
(7) If the maximum pressure is less than the minimum standard value, replace the radiator cap sub-assembly.
2. INSPECT FINS FOR BLOCKAGE
(a) If the fins are clogged, wash them with water or a steam cleaner and dry them with compressed air.
