Engine Cooling System Inspection and Cleaning
To help avoid danger of being burned, do not remove degassing tank cap while engine and radiator are still hot. Scalding fluid and steam can be blown out under pressure if cap is taken off too soon.
Cooling system should be serviced as follows.
1) Check cooling system for leakage or damage.
2) Wash degassing tank cap with clean water by removing degassing tank cap when engine is cold.
3) Check coolant for proper level and freeze protection.
4) Using a pressure tester (1), check system and degassing tank cap (2) for proper pressure holding capacity.
If replacement of cap is required, use a proper cap for this vehicle.
Cooling system and degassing tank cap holding pressure (for inspection)
120 kPa (1.1 kg/cm², 17.0 psi)
5) Inspect all hoses. Replace hoses whenever cracked, swollen or otherwise deteriorated.
6) Clean frontal area of radiator core.