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Welcome to Automatic Transmission Service Group

ATSG is the largest, Employee-Owned, technical support service in the Automatic Transmission Industry. We offer a Technical Hotline, Books, Software, Bulletins, Seminars, and Technical Courses to the Automatic Transmission Professional. Please use the links on the left to find out more or obtain products or services.

 

 

 


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Mitsubishi Montero/Sport R4A51/V4A51 Part 2

This second installment of a two-part article provides additional information on the Mitsubishi Montero R451/V4A51 rear-drive transmission. It includes more rebuild tips and component identification as well as important valve-body and smallparts information. Remember that the order of the information is from the rear of the transmission to the front. Part 2 also contains some electrical information pertaining to the resistance values of the transmission internal components, and identification of case-connector terminals. It also provides a clutchapplication chart and a hydraulic-clutch-pressure chart.

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