[rotorwrench]

EA labs made replacement motors that would fit the Model A clear up into the late 60s or early 70s but eventually they disappeared. My old 29 had one but it finally died. I still debate whether to try to make my own out of a usable small unit such as those that are currently available or keep looking for a good original. The Trico vacuum units have their own operational problems due to vacuum fluctuation during normal operation.

The early model A commercial pickups mostly had the hand operated wiper.