On-Vehicle Inspection [10/2018 - 10/2019]: Procedure
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- INSPECT RESERVE TANK CAP
- Measure the valve opening pressure.
*a O-ring *b Rubber Packing - If there are water stains or foreign matter on the O-ring, clean it with water and finger scouring.
- Check that the O-ring is not deformed, cracked or swollen.
- Apply engine coolant to the O-ring and rubber packing before using a radiator cap tester.
- When using the radiator cap tester, tilt it upwards 30° or more.
*1 Reserve Tank Cap *a Radiator Cap Tester *b 30° or more - Pump the radiator cap tester several times, and check the maximum pressure.
Pump Speed
1 pump per second
HINT:
Even if the reserve tank cap cannot maintain the maximum pressure, it is not a defect.
Result
Item Specified Condition Standard pressure
(for brand-new reserve tank cap)94 to 122 kPa (1.0 to 1.2 kgf/cm2, 13.6 to 17.7 psi) Minimum pressure
(for used reserve tank cap)79 kPa (0.8 kgf/cm2 , 11.5 psi) If the maximum pressure is less than the minimum pressure, replace the reserve tank cap.
- Measure the valve opening pressure.
- INSPECT FINS FOR BLOCKAGE
- If the fins are clogged, wash them with water or a steam cleaner and dry them with compressed air.NOTE:
- To avoid damaging the fins, keep the tip of the nozzle at right angles to the core surface.
- If the nozzle of the steam cleaner is too close to the core, there is a possibility of damaging the fins. Always maintain the following distances from the core when using a steam cleaner.STANDARD STEAM CLEANER NOZZLE DISTANCE
Steam Pressure Specified Condition 2942 to 4903 kPa (30.0 to 50.0 kgf/cm2 , 427 to 711 psi) 300 mm (11.8 in.) 4903 to 7845 kPa (50.0 to 80.0 kgf/cm2 , 711 to 1138 psi) 500 mm (19.7 in.) - If the fins are bent, straighten them with a screwdriver or pliers.
- Do not expose electronic components to water.
- If the fins are clogged, wash them with water or a steam cleaner and dry them with compressed air.