How does a 3-speed automatic transmission work?

08-22-2018, 08:14 PM
There is a website about how a 3-speed automatic transmission work at but I'm confused about how first gear work. Is the rear carrier splined to the output shift or is there an one-way clutch between the rear carrier and the output shaft?

08-23-2018, 05:07 PM
And what transmission are you asking about?

08-24-2018, 07:18 PM
Turbo-Hydramatic 125 (FWD) up to TH425. I have a shop manual for 1982 FWD X-Body cars. I need clear diagrams of the parts inside the transmission.

09-29-2018, 03:34 PM
Go to for good stuff.

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