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Here's a video of how we tested a Hydramatic transmission for shift points and leaks after a rebuild. Obviously, this test doesn't confirm bands and clutch will have solid engagement under load, but it gives some confidence the transmission will shift and not leak in the vehicle. Malcolm...

Hydramatic front and rear servo/band setup and valve body description Some videos I took when setting up the rear servo on a 1945 Hydramatic from a Chaffee tank. I'll show the front servo on a separate video. Malcolm https://youtu.be/BQpR4ApSOd0 https://youtu.be/RqM21bW7uzs...

Hi, I work at a military museum in Oshawa, Ontario, Canada, and I'm rebuilding the two Hydramatics that sit in front of two Caddy flathead V8's in a 1945 Chaffee tank. These trannies were specific to tanks but are similar to the ones used in the M135. I know the Chaffee uses the same oil cooler...