Patent ID: 7597121

Claim:
An automatic brake fluid exchange machine for use with a braking system having four discrete brake cylinders and a master cylinder, comprising: a used fluid tank; a new fluid tank; a manifold connectable to four secondary brake cylinders corresponding to a front driver's side wheel, a front passenger's side wheel, a rear driver's side wheel, and a rear passenger's side wheel; a suction pump connecting the manifold to said used fluid tank for draining used brake fluid from said four secondary brake cylinders; a pressure pump connecting the new fluid tank to the master cylinder; a processor for opening and closing the valves that couple the four secondary brake cylinders with the suction pump, where the processor first opens and then closes each valve according to a predetermined sequence, said processor further controls said pressure pump to deliver new fluid from said new fluid tank into said master cylinder simultaneously as said suction pump sequentially withdraws used fluid from said four secondary brake cylinders; and user selection means coupled to said processor for enabling a user to select a predetermined sequence of opening and closing said valves by said processor.