Wiper motor shaft size

[PNWPederson]

I have a 1970 GB 32 and I'm replacing the old wiper arms with pantograph arms. The new arms didn't come with any lock nuts to secure the pantograph plate to the motor shaft. Any idea the shaft size of the wiper motor?

 

[Mike GB32]

I'm sorry I can't answer you question.
I'm thinking of converting to pantographic too.
Did you use AM Equipment wipers? It looks like they also have a screw hole to secure the plate with.
How did you make out?

 

[PNWPederson]

I'm sorry I can't answer you question.
I'm thinking of converting to pantographic too.
Did you use AM Equipment wipers? It looks like they also have a screw hole to secure the plate with.
How did you make out?

I haven't completed the project yet as the weather here has been horrible and work has been busy. I did buy the Marinco 33032A wiper arms and they seem like they will work just fine. I didn't even think about a screw holding the plate down, though I haven't really tried to install them either. There wasn't any screws in the boxes I received though and no instructions.

https://www.amazon.com/AFI-33032A-Deluxe-Stainless-Adjustable/dp/B000NHZY42/ref=sr_1_1?crid=7LVO823Q29P2&dib=eyJ2IjoiMSJ9.tLu5mA_qrdgd_RcSqcOa3IzamBdFGJmkXRRtpDHuiQWEDOlgynMO7DBFgapHeh-bZqTssawSd7RbBg7hjx8CYKrbeYru9kJJMgvimZgU9Niu0EEE13k4ryKPUHWFC3n15m-zDwH7NPEjsOsFe-Q4IabbGwMEnWEMPiaz-ZwS4Rmt5KkvB9XCXSEiwmjvPiD93ornjwu2l-lfPcJuzHCf-XHDbGnR00sA9itwJmrpcX4.yBO6wVBRNR4JJbn1GaNwsibIwOBcBezhcL4_2W3n-nI&dib_tag=se&keywords=marinco+33032a&qid=1729714584&sprefix=marinco+33032a%2Caps%2C156&sr=8-1