Apparatus and method for cleaning and fluid exchange of a low-fl

Details Apparatus and method for cleaning and fluid exchange of a low-fl Apparatus and method for cleaning and fluid exchange of a low-fl

1998-06-29

2000-05-23

Denion, Thomas E.

Lubrication

Automobile crank and gear case service

141 98, F16C 314

Patent

active

060655674

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.

REFERENCES:
patent: 4030580 (1977-06-01), Glaze
patent: 4490621 (1984-12-01), Watabe et al.
patent: 5535849 (1996-07-01), Few
patent: 5806629 (1998-09-01), Dixon et al.

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