초록 ▼

A hand held transmission fluid exchanger including a housing block having parallel new and used fluid passages therein, such passages being joined by a return passage having a pressure relief valve therein. The method involves connecting such exchanger with a conventional on-demand transmission flui

A hand held transmission fluid exchanger including a housing block having parallel new and used fluid passages therein, such passages being joined by a return passage having a pressure relief valve therein. The method involves connecting such exchanger with a conventional on-demand transmission fluid supply system having a meter therein and holding the dispensing gun open so that flow is controlled by valves incorporated in the exchanger.

대표청구항 ▼

[ What is claimed is:] [1.]1. A hand held transmission fluid exchanger for connection with the dispenser outlet of on-demand metering head having a meter for indicating the volume of fluid exchanged and comprising:a housing to be suspended from said metering head and including a new fluid passage fo

[ What is claimed is:] [1.]1. A hand held transmission fluid exchanger for connection with the dispenser outlet of on-demand metering head having a meter for indicating the volume of fluid exchanged and comprising:a housing to be suspended from said metering head and including a new fluid passage for connection on an upstream end to said dispenser outlet and on its downstream end with a transmission system inlet location upstream of the transmission pump, said housing further including a used fluid passage for connection on its upstream end with a transmission system outlet location downstream of the transmission pump and on its downstream end with a used fluid storage device;said housing further including a return passage for flow of fluid in the return direction from said used fluid passage to said new fluid passage; anda pressure relief valve device in said return passage operative to, at a predetermined pressure differential between said used fluid passage and new fluid passage, to bypass used fluid to said new fluid passage via said return passage.