Classic/Antique Car Repair: wiper transmission replacement, wiper shaft, spanner nut

Question
What is the procedure to replace a wiper transmission on a
1955 Chevrolet??

Answer
The windshield wiper set up on the 55 Chevrolet was certainly not one of GM's finest works. It is a cable driven set up and the two pulleys on the transmissions were spring loaded. It take two people to unload the cables to remove the transmission. With the wiper arm off the outside person pushes down on the wiper shaft. The inside person, who is upside down at this point, pulls on the cables to load the pulleys. While holding the tension on the cables release the pressure on the shaft and the pulleys are loaded for removal. The cables can then be removed from the wiper motor under the dash making notes as how they were wound. Undo the spanner nut holding the transmission in place and remover the transmission. Install in the reverse order and when everything is connected push down on the wiper shaft to allow the pulleys to spring load the cables. I hated that job when I was working in the shop.
Brad