Wiper Transmission/Relay arms - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**jollymon02** · 01-06-2024, 12:22 AM

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** · 01-06-2024, 11:53 AM

Got a pic?

**Rust_never_sleeps** · 01-06-2024, 01:36 PM

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

**71CHEVYSHORTBED402** · 01-06-2024, 07:55 PM

Quote:

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** · 01-06-2024, 10:59 PM

Picture attached.

Name: PXL_20240107_024619725.jpg
Views: 141
Size: 66.4 KB

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

**damnyankee36** · 01-08-2024, 03:11 PM

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** · 01-08-2024, 04:46 PM

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.

01-06-2024, 12:22 AM	#1
jollymon02 Junior Member Join Date: Jun 2021 Location: Fort Worth, TX Posts: 54	Wiper Transmission/Relay arms 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?

01-06-2024, 11:53 AM	#2
Sheepdip Senior Member Join Date: Nov 2018 Location: Waterford California Posts: 2,653	Re: Wiper Transmission/Relay arms Got a pic?

01-06-2024, 01:36 PM	#3
Rust_never_sleeps Senior Member Join Date: Jun 2022 Location: San Ramon,CA Posts: 637	Re: Wiper Transmission/Relay arms Anything here look familiar? https://www.lmctruck.com/1967-72-che...per-and-washer __________________ 1970 C10 Custom longbed 350/350 Code: __ ______\|__]\____ ....\|___(o)_____(o)_]

01-06-2024, 10:59 PM	#5
jollymon02 Junior Member Join Date: Jun 2021 Location: Fort Worth, TX Posts: 54	Re: Wiper Transmission/Relay arms Picture attached. What is this, do I need one? https://gmcpauls.com/pictures/wipermotorseal.jpg

01-08-2024, 03:11 PM	#6
damnyankee36 Senior Member Join Date: Sep 2002 Location: Alamogordo, NM Posts: 724	Re: Wiper Transmission/Relay arms 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. __________________ 1966 C10 Custom Cab Restomod (Sold) 1969 Camaro Z/28 (Keeper) Current Build: 1968 C10 (Semi-Factory Restoration) 1983 Camaro Z/28 (Next in line, Keeper) 1951 3100 (2nd in line)

01-08-2024, 04:46 PM	#7
jollymon02 Junior Member Join Date: Jun 2021 Location: Fort Worth, TX Posts: 54	Re: Wiper Transmission/Relay arms 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.



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