RM35X0E _51 Engine / Hybrid System _079310 7GR-FKS COOLING _0386774 RADIATOR G

7GR-FKS COOLING  RADIATOR  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 16401 1.CHECK RADIATOR CAP SUB-ASSEMBLY

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.
A107446C03
0.479,1.031 0.698,1.229 0.219,0.198 10 false *a 0.708,1.333 1.021,1.49 0.313,0.156 10 false *b 1,1.604 1.313,1.76 0.313,0.156 10 false *c 2.344,1.573 2.656,1.729 0.313,0.156 10 false *d
*a Rubber Packing (1)
*b Rubber Packing (2)
*c Rubber Packing (3)
*d Valve Seat


Measure the valve opening pressure.

i.

If there are water stains or foreign matter on the rubber packing (1), (2) or (3), clean the part(s) with water and finger scouring.


ii.

Check that the rubber packings (1), (2) and (3) are not deformed, cracked or swollen.


iii.

Check that the rubber packing (3) and valve seat are not stuck together.


iv.

Apply engine coolant to the rubber packings (2) and (3) before using a radiator cap tester.


v.
A104601C11
0.375,0.896 0.375,1.521 false 1.719,0.823 1.885,0.365 1.885,0.365 2.094,0.365 false 2.146,0.281 2.323,0.479 0.177,0.198 10 false *a 1.333,0.958 1.531,1.146 0.198,0.188 10 true *b 0.302,1.573 0.479,1.771 0.177,0.198 10 false *1
*1 Radiator Cap Sub-assembly
*a Radiator Cap Tester
*b 30° or more


When using the radiator cap tester, tilt it upward 30° or more.


vi.

Pump the radiator cap tester several times, and check the maximum pressure.

Pumping speed:

1 pump per second


HINT:

Even if the radiator cap sub-assembly cannot maintain the maximum pressure, it is not a defect.


Result:
Item Specified Condition
Standard pressure
(for brand-new radiator cap sub-assembly) 		93 to 123 kPa (1.0 to 1.3 kgf/cm2, 13.5 to 18 psi)
Minimum pressure
(for used radiator cap sub-assembly) 		79 kPa (0.8 kgf/cm2, 11.4 psi)


If the maximum pressure is less than the minimum pressure, replace the radiator cap sub-assembly.