1. To remove rust, sludge and other foreign material from the cooling system, use Premium Cooling System Flush, which is harmless to aluminum radiators, For more information, refer to the Specifications chapter in this section. Remove the thermostat before pressure flushing. The cleaning procedure restores the efficiency of the cooling system and helps prevent overheating. Pulsating or reversing the flush water flow will remove deposits more effectively than steady flow in the normal direction of coolant flow. In severe cases where cleaning solutions will not clean the cooling system properly to keep it running efficiently, the pressure flush method using the Cooling System Flusher will need to be used. Dispose of used coolant and flush water contaminated with antifreeze and cleaning agents in accordance with local, state, and national laws and regulations.
2. Remove the radiator.
3.
CAUTION: The internal pressure in the radiator must not exceed 138 kPa. If this value is exceeded, damage may occur.
Flush the radiator with countercurrent (backwash). In this case, the radiator must be in position "upside down", and the pressurized water hose must be inserted into the lower hose port.
4. Remove the thermostat. Refer to ch. "Thermostat" this section.
5. Flush the engine with counter current. Install a pressurized water hose to the engine coolant return port.
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