Abstract: A fail-safe transmission service machine (12) allows old ATF to be pumped out of a transmission (10b) as a vehicle engine (10a) runs while the vehicle (10) is stationary. The machine (12) responsively pumps a matching volume of new ATF into the transmission so that dry running of the transmission can not occur. If the supply of new ATF runs out or if power to the service machine (12) is interrupted, the machine reverts to closed loop fluid circulation for the transmission. A hydraulic rectifier (42) provides for universal connection of hoses between the transmission cooler fluid circulation loop (39) of the vehicle (10) and the service machine (12). An electrically driven assistance pump (94) allows the service of vehicles which have low-flow or low-pressure transmission pumps.

Abstract: A machine and method for cleaning an automotive automatic transmission by effecting the discharge of old used fluid from the transmission and the simultaneous replacement of this old fluid with new fluid on an exchange basis. The machine includes a set of primary hoses, a set of intermediate hoses, and a set of plural pairs of complementary adapter fittings which in combination adapt the machine for convenient service of a wide variety of automobiles and their transmissions. The primary hoses, intermediate hoses, and adapters are configured to fit together in a wide variety of different ways. This variability or flexibility of connection for the machine allows a very limited number of primary hoses, intermediate hoses, and adapters to interface the machine flexibly with a wide variety of different transmissions, and the different vehicles in which these transmissions are installed; all in accord with possibly differing preferences of particular service technicians who use the machine.

Abstract: An apparatus and method for cleaning the intake system of an internal combustion engine, such as an automobile engine, employs intake manifold vacuum of the running engine to ingest and atomize a liquid cleaner using a bleed of ambient air. Atomizing of the liquid cleaner provides better dispersion of the cleaner to surfaces of the intake system of the engine, and prevents puddling of the liquid in low spots of the intake system.

Abstract: A fail-safe transmission service machine (12) allows old ATF to be pumped out of a transmission (10b) as a vehicle engine (10a) runs while the vehicle (10) is stationary. The machine (12) responsively pumps a matching volume of new ATF into the transmission so that dry running of the transmission can not occur. If the supply of new ATF runs out or if power to the service machine (12) is interrupted, the machine reverts to closed loop fluid circulation for the transmission. A hydraulic rectifier (42) provides for universal connection of hoses between the transmission cooler fluid circulation loop (39) of the vehicle (10) and the service machine (12). An electrically driven assistance pump (94) allows the service of vehicles which have low-flow or low-pressure transmission pumps.

Abstract: An apparatus and method for cleaning the intake system of an internal combustion engine, such as an automobile engine, employs intake manifold vacuum of the running engine to ingest and atomize a liquid cleaner using a bleed of ambient air. Atomizing of the liquid cleaner provides better dispersion of the cleaner to surfaces of the intake system of the engine, and prevents puddling of the liquid in low spots of the intake system.