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How does a 3-speed automatic transmission work?

08-22-2018, 09:14 PM
There is a website about how a 3-speed automatic transmission work at http://leakylugnut.com/driveline/automatic-transmissions/ 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, 06:07 PM
And what transmission are you asking about?

08-24-2018, 08:18 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, 04:34 PM
Go to Sonnax.com for good stuff.

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