Tech tip —— 1940-48 transmission shifter arm repair
 

The last few weeks we’ve had a few rebuilds on 40/48 shifter housings. The shifter arm pins are nearly always worn. Rather than replacing with diminishing NOS arms, we’ve been repairing them for years, and thought I’d share as it’s simple. The below two photos show the common wear.
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First grind the head of the original smooth and drive out with a punch. (Wear safety glasses)

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Next drill the hole with a 19/64 drill bit.


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Next drive in the new pin. And you are done!

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We sell the replacement pins (see link below). I have gotten to where I replace them all as even compared to a NOS arm these pins fit the Clevis better for less shifter lever free play.. hope this helps someone save some $$ on a un-needed nos parts purchase.

https://thirdgenauto.com/product/194...m-repair-pins/


Sent from my iPhone using Tapatalk

Re: Tech tip —— 1940-48 transmission shifter arm repair
 

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OK, lets hear it, folks! THIRD GEN! THIRD GEN! THIRD GEN! THIRD GEN! THIRD GEN! THIRD GEN! DD

http://thirdgenauto.com/wp-content/u...otive-logo.gif


Third Gen Automotive
Phone: 844-327-5988
Url: thirdgenauto.com
2600 Old Nashville Hwy
McMinnville, TN 37110

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Re: Tech tip —— 1940-48 transmission shifter arm repair
 

Great tip and advice!

Re: Tech tip —— 1940-48 transmission shifter arm repair
 

Cool, glad to know this option exists, Thanks.

Re: Tech tip —— 1940-48 transmission shifter arm repair
 

What am I missing here? If you drive out the old shaft isn't the hole the correct size? Why do you have to drill it out?
Just curious
John

Re: Tech tip —— 1940-48 transmission shifter arm repair
 

The original pins are stepped down to act as a stop when installed at the factory... as in the originals are smaller in the portion that sits in the arm

Re: Tech tip —— 1940-48 transmission shifter arm repair
 

An additional idea (to the above tip) is to replace the stock pins that attach shifter arms to transmission side cover with fine threaded nuts and bolts after you replace the seals.
Can be done with the transmission in the car. Clutch arm also. Still working great 20 years later. Zero play as all components are threaded. No pin peening required.

Re: Tech tip —— 1940-48 transmission shifter arm repair
 

Nice job, Michael. I wondered about the drilling, now you've explained it, it all makes sense.