ENGINE COOLANT LEVEL INSPECTION
| WARNING | Remove and install all parts when the engine is cold, otherwise they can cause severe burns or serious injury. Turn off the engine and wait until it is cool. Be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise to the first stop. Step back while the pressure escapes. When you are sure all the pressure is gone, press down on the cap using the cloth, turn it, and remove it. |
- Verify that the engine coolant level in the coolant reserve tank installed on the shroud panel is between the L and F marks.
- If the engine coolant level is below L, add engine coolant.
Scheme 7
Scheme 7: ENGINE COOLANT PROTECTION INSPECTION
- Measure the coolant temperature and specific gravity with a thermometer and a hydrometer. CAUTION: The engine has aluminum parts that can be damaged by alcohol or methanol antifreeze. Do not use alcohol or methanol in the cooling system. Use only ethylen-glycol-based coolant. Use only soft (demineralized) water in the coolant mixture. Water that contains minerals will reduce the coolant's effectiveness.
- Determine the coolant protection by referring to the graph. (Scheme 7) If the coolant protection is not proper, add water or coolant.
ENGINE COOLANT LEAKAGE INSPECTION
| WARNING | Remove and install all parts when the engine is cold, otherwise they can cause severe burns or serious injury. Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise to the first stop. Step back while the pressure escapes. When you are sure all the pressure is gone, press down on the cap using the cloth, turn it, and remove it. |
Scheme 8
- Inspect the engine coolant level.
- Remove the cooling system cap.
- Clean the installation parts of the cooling system cap and the upper radiator hose.
- Install the SST and a radiator cap tester to the coolant reserve tank filler port.
- Apply pressure using the radiator cap tester. CAUTION: Applying more than 127 kPa {1.3 kgf/cm 2 , 18 psi} can damage the hoses, fittings, and other components, and cause leaks. Pressure 127 kPa {1.3 kgf/cm 2 , 18 psi} [1 min]
- When pressurizing the radiator, verify that the pressure is maintained. If the gauge needle drops, it may indicate water leakage, therefore perform leakage inspection. If engine coolant leaks from the upper hose installation part, replace the upper hose and the clamp. If the engine coolant leaks from the main body of the radiator (caulked part), replace the radiator.
| WARNING | Never remove the cooling system cap while the engine is running, or when the engine and radiator are hot. Scalding coolant and steam may shoot out and cause serious injury. It may also damage the engine and cooling system. Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise to the first stop. Step back while the pressure escapes. When you're sure all the pressure is gone, press down on the cap using the cloth, turn it, and remove it. |
Scheme 9
- Clean the cooling system cap and the sealed part.
- Inspect the crack or turn over on the sealed part of the cooling system cap. If there is malfunction, replace the cooling system cap.
- Attach the cooling system cap to the radiator cap tester.
- Hold the cooling system cap downward and apply pressure gradually. Verify that the pressure holds for 10 s If the pressure is not held stable within the specification, replace the cooling system cap. Pressure 73.3-103.3 kPa {0.748-1.053 kgf/cm 2 , 10.63-14.98 psi}
