Patent ID: 6619335
Filing Date: 2003-09-16
Classification: F01M,F16H

Abstract:
A method of replacing a first fluid in a system with a second fluid using a service apparatus having a plurality of fluid paths, a first hose and a second hose, a source tank and a waste tank, said system having a first system port and a second system port, said method comprising the steps of:connecting said first hose to said first system port; connecting said second hose to said second system port; pumping said first fluid out of said system; determining, according to said pumping step, one of said first system port and said second system port to be a system outlet and the other to be a system inlet; deciding one of said first hose and said second hose to be in fluid communication with said source tank and the other to be in fluid communication with said waste tank; and selecting said plurality of fluid paths, according to said determining step and said deciding step, to pump out said first fluid from said system to said waste tank and to pump in said second fluid from said source tank into said system.