ThreadedHow is the knob attached to the wiper motor rod?
Thanks guys...
Is this a TRICO vacuum unit?.
pictureHmmmm.... how can I determine this?
MAFCA has a pdf file on wipers for the model As. It has all the info a person needs for the different years and types. If you Google it, it should come up.
Ford started to use TRICOs on commercials in early to mid 1930. Before that, they were all hand operated.