RM35X0E _51 Engine / Hybrid System _079310 7GR-FKS COOLING _0386557 COOLING SYSTEM G

7GR-FKS COOLING  COOLING SYSTEM  ON-VEHICLE INSPECTION  


CAUTION / NOTICE / HINT

CAUTION:
A442741

Do not remove the radiator cap sub-assembly while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.


PROCEDURE

Hide 1.INSPECT ENGINE COOLANT LEVEL IN RESERVOIR TANK

a.
A442742C01
1.375,1.729 1.375,1.563 1.375,1.563 2.438,1.563 true 0.833,0.917 1.365,0.917 1.365,0.917 1.365,1.094 true 0.667,0.792 0.979,0.948 0.313,0.156 10 false *a 2.469,1.448 2.781,1.604 0.313,0.156 10 false *b
*a F Line
*b L Line


Check that the engine coolant level is between the L line and F line when the engine is cold.

If the engine coolant level is low, check for leaks and add engine coolant to the F line.

NOTICE:
·

Do not substitute plain water for engine coolant.

·

The coolant levels in the compartments inside the radiator reserve tank assembly may differ, but this is not a malfunction.




Hide 2.INSPECT ENGINE COOLANT QUALITY

CAUTION:

Do not remove the radiator cap sub-assembly while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.


a.
A442743

Remove the radiator cap sub-assembly.


b.

Check if there are any excessive deposits of rust or scale around the radiator cap sub-assembly and radiator filler hole. Also, the engine coolant should be free of oil.

If excessively dirty, replace the engine coolant.


c.

Install the radiator cap sub-assembly.


Hide 3.INSPECT FOR COOLANT LEAK

CAUTION:

Do not remove the radiator cap sub-assembly while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.


a.

Remove the radiator cap sub-assembly.


b.
A442744C01
2.417,1.802 2.125,1.302 true 2.396,1.781 2.604,1.958 0.208,0.177 10 true *a
*a Radiator Cap Tester


Fill the radiator assembly with engine coolant, and then install a radiator cap tester.


c.

Warm up the engine.


d.

Pump the radiator cap tester to 118 kPa (1.2 kgf/cm2, 17 psi), and then check that the pressure does not drop.

·

If the pressure drops, check the hoses, radiator assembly and water pump assembly for leaks.

·

If there are no signs of external engine coolant leaks, check the heater core, cylinder block sub-assembly and cylinder head sub-assembly.



e.

Remove the radiator cap tester.


f.

Install the radiator cap sub-assembly.