VCCA Home Forums Thread Like Summary - 1947 Windshield Wiper Switch

I am working on restoring a 47 Chevy convertible and I am still having problems with my vacuum wipers. I pulled the vacuum wiper motor and cleaned and lubed it and ran it directly from the manifold and it seemed to work correctly. There was not a vacuum leak from the motor. When I reinstalled the motor, I hear a vacuum leak from under the dash and the wipers do not run correctly. I replaced all the vacuum hoses with new hoses of the correct size. I am thinking there is a problem with the switch leaking. Is there any recommendations on cleaning or repairing the wiper switch? Thanks for your help.

It turns out I put the wiper arms on the wrong post of the wiper motor. After I swapped the arms on the posts, the wipers are stopping in the correct down position. The NOS wiper motor is working great. Thanks to everyone's help with trying to fix my old motor.