Patent ID: 8590580

Claim:
A method for replacing a volume of coolant fluid in a coolant fluid circulating system in an associated diesel engine system, the coolant fluid circulating system including a radiator having an upper region and a lowermost region, a radiator drain and a radiator cap located proximate to the upper region, the method comprising the steps of: establishing pneumatic connection with at least one location in the diesel engine coolant fluid circulating system wherein the pneumatic connection location is at least one of the following: on the radiator cap, proximate to the radiator cap, the device including: a pressurizable coolant fluid recycling tank; at least one air pressure regulator and connector releasibly engageable with a pressurized air source; at least one pneumatically operable device configured to exert vacuum, the pneumatically operable device operable on the diesel engine fluid circulating system, the device including at least one pneumatic hose configured to be releasibly connected the diesel engine in pneumatic communication with the coolant fluid circulating system; at least one vacuum pressure regulator; at least one fluid conduit in fluid communication with the coolant fluid recycling tank and configured to be positioned in releasable communication with the diesel engine coolant fluid recirculating system; establishing fluid connection with at least one point in the diesel engine coolant fluid circulating system, the fluid connection location being different from the pneumatic connection; after pneumatic and fluid connection is established, exerting vacuum pressure through said pneumatic connection, the vacuum pressure being less than 30 psi; and introducing the volume of coolant fluid through said fluid connection, wherein the pneumatic and fluid connections remain established during coolant fluid introduction.