RM38T0EC _51 Engine / Hybrid System _144716 M20F-FXS, M20G-FXS COOLING _0603000 RADIATOR G

M20F-FXS, M20G-FXS COOLING  RADIATOR  ON-VEHICLE INSPECTION  


CAUTION / NOTICE / HINT

CAUTION:
A389829

Do not remove the reserve tank cap and air release valve 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.INSPECT RADIATOR CAP SUB-ASSEMBLY

CAUTION:

Do not remove the reserve tank cap sub-assembly and air release valve 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 packings (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


Result:
Item Specified Condition
Standard pressure
(for brand-new radiator cap sub-assembly) 		74 to 103 kPa (0.8 to 1.1 kgf/cm2, 10.7 to 14.9 psi)
Minimum pressure
(for used radiator cap sub-assembly) 		59 kPa (0.6 kgf/cm2, 8.6 psi)


HINT:

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


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