Method of cleaning, and filling liquid accommodating apparatus

A method of cleaning, flushing, and filling a liquid cooling system of an internal combustion engine having an engine block and radiator, said block and radiator having connected passages accommodating a liquid coolant, comprising;

• pumping the liquid coolant from the passages into a storage container, supplying liquid under pressure to the passages to fill the passages with liquid, agitating the liquid in the passages by sequentially moving the liquid in opposite directions, flushing the liquid from the passages by adding more liquid under pressure to the passages and allowing liquid to flow from a discharge opening open to said passages, and filling the cooling system with liquid coolant by pumping the coolant from the storage container into the passages and allowing the liquid to be discharged from the passages whereby the liquid coolant displaces the liquid in said passages.

A method of cleaning, flushing, and filling a system having a liquid accommodating means including passages for accommodating a first liquid, comprising:

• pumping the first liquid from the passages into a storage container, supplying a second liquid under pressure to the passages to fill the passages with said second liquid, agitating the second liquid in the passages by sequentially moving the second liquid in opposite directions, flushing the second liquid from the passages by adding a third liquid under pressure to the passages and allowing the second liquid to flow from a discharge opening open to said passages, and filling the cooling system with a fourth liquid by pumping the fourth liquid into the passages and allowing the third liquid to be discharged from the passages, whereby the fourth liquid displaces the third liquid in said passages.