Wiper Transmission/Relay arms

[jollymon02]

Hey all, cleaned up my wiper transmission arms and have a question.. there is a small black plastic "bushing" on the shaft where the wiper blade arms mount and over the 50+ years, it's disintegrating. What is that for and what are people using to replace it? Is it needed?

[Sheepdip]

Got a pic?

[Rust_never_sleeps]

Anything here look familiar?
https://www.lmctruck.com/1967-72-che...per-and-washer

[71CHEVYSHORTBED402]

Originally Posted by jollymon02

Hey all, cleaned up my wiper transmission arms and have a question.. there is a small black plastic "bushing" on the shaft where the wiper blade arms mount and over the 50+ years, it's disintegrating. What is that for and what are people using to replace it? Is it needed?

Picture would be great. I suspect you're talking about the dust boot grommet seal thing of a jig on front of the motor's shaft. Reference part # 18904822 for a seal. https://gmcpauls.com/windshield_wiper_related.htm

[jollymon02]

Picture attached.



What is this, do I need one? https://gmcpauls.com/pictures/wipermotorseal.jpg

[damnyankee36]

Try some heat shrink tubing.

On the other seal: If that's the seal to the motor output shaft, my most recent rebuilt purchase doesn't have that installed. Now I am thinking of getting one as I didn't know they were available. I would imaging it would be a good idea as I doubt the rebuilt unit is sealed internally.

[jollymon02]

Yeah, I figured it might have just been protection for it vs the cowl. As for seals, I have the waxy one, but not the rubber one.