Technical Trico Trouble

Looking to remove the wiper motor from this ‘35 Ford truck cab for repair. Seems pretty straight forward but I can’t figure how to remove the grooved wheel that drives the wiper arm from the motor shaft. There seems to be a pin in there but I don’t know how to get it out.

Bet someone here does. Please share your expertise and thank you in advance!

 

I believe they just tap out. I’d spray with ATF/Acetone and come back the next day with a tiny drift or even a nail...

 

Yup just drive it out. Try both directions, as it might be a tapered pin.

 

Thanks guys but it’s a blind hole and can’t see how to tap it out. In other words the grooved knob only has the hole on one side. Seems like the pin needs to get picked out? I believe on the wiper shaft there is a through hole.

 

What does the other side look like? Perhaps the 'pin' showing needs to be depressed like a ratchet/socket? Soak it like Fortunateson said.

 

That looks like a set screw.

 

That almost looks like screw head in the hole...and if it is, I doubt it will ever come loose.
I would just drill it out...all the way through, and re-pin it later.

 

If it is a pin and not a screw then I would try to drill a hole exactly opposite the pin had and then try to knock it out.

 

Looks to be the same as the wiper mounts on my Pontiac- that's a setscrew that tightens onto a flat on the shaft.
Clean all the paint out of it, use acetone to get down in the threads and melt that out as suggested above.
Mine took an angled pick to clear all the grime out of the screw slot; take great care because they strip easily.
New ones are available if you do break that one though.

Phil

 

Thank you all! Here’s a shot from the other side:


Lighting not so good but no hole on this back side. Not sure I have the skills to hit the hole exactly on the other side by drilling but will keep that as an option. Will explore the screw thought more as it is soaking now.
I do have another wiper motor that appears just like this one outwardly but does not appear to be set up to take the grooved knob but rather a different format wiper arm.
Either way, I’ll post results once I get it done.
Thank you again!

 

There should be an allen head set screw in that hole.

 

So, turns out there is a through hole with the other side being full of crap. A little digging and scraping removed 50+ years of crap packed in. A little drill and some tapping solved the problem.


Now to fix/ rebuild.

Thank you all again & happy Halloween!

 

Thanks for letting us know you have sorted it. That way someone else can be pointed in the right direction.

 

Just take off the top of the wiper motor. Clean the dried stuff (technical term). Then lube it all up with Vaseline. Check working with a vacuum source. Be careful of the gasket.

 

Thank you^^.
Kind of interesting those funky looking bolts they use. Must have been a special tool they made for them.

 

Save yourself some time and frustration and check out the portion of @PhilA thread on rebuilding his. Very thorough and informative...and it WORKED afterward!

 

Credit where it's due, of the two pieces I didn't fix myself on the car (wiper motor and heater valve), the Trico motor was sent off to Ficken Wiper Service who fixed it (actually by replacing most of it, the body of the motor was bent- it had been dropped or banged).
Excellent service, would recommend again.