On-Vehicle Inspection [11/2018 - ]: Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK RADIATOR CAP SUB-ASSEMBLY WARNING:
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.
- Measure the valve opening pressure.
*a Rubber Packing (1) *b Rubber Packing (2) *c Rubber Packing (3) *d Valve Seat - 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.
- Check that the rubber packings (1), (2) and (3) are not deformed, cracked or swollen.
- Check that the rubber packing (3) and valve seat are not stuck together.
- Apply engine coolant to the rubber packings (2) and (3) before using a radiator cap tester.
- When using the radiator cap tester, tilt it upward 30° or more.
*1 Radiator Cap Sub-assembly *a Radiator Cap Tester *b 30° or more - 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)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) If the maximum pressure is less than the minimum pressure, replace the radiator cap sub-assembly.
- Measure the valve opening pressure.