1951 Ford overdrive

[mrlaser]

This is a cropped illustration from Popular Science reference to give some idea about the quality of the article.

[mrlaser]

The transmission is back together. There were 3 things that were wrong or incorrect. As I mentioned previously the plate which covers the Balk ring and gear had a significant ridge worn into it which prevented the pawl from fully engaging balk gear and thus preventing the shift into overdrive. The damage to the speedometer/governor gear was caused by an incorrect governor drive gear assembly. The tip of the unit measures 0.248 and should have been 0.375. The recess in the OD housing measures 3/8" or 0.375. This allowed the gear to move abnormally and resulted in the damage to speedometer / governor gear. The replacement part is being shipped. I wan't to again thank everyone for their help and interest, with special thanks to Gary Duff.

[mrlaser]

Sorry for the duplicate post. I had to edit a few pictures for size. I also wanted to mention that the Ford Parts book that I have has an exploded view of the OD unit which shows the speedometer/governor gear on the output shaft gear on backwards. It was a bit difficult to remove and replace so I am glad I only remembered the book after I was done.

[mrlaser]

More pictures.