1966 Chevy Wiper Transmission/Pivot Issue

[tferbend]

I copied this from my post on stovebolt (sorry for the plug):

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I bought a wiper transmission, new wiper arms (both sides) and wipers a week ago and installed them this past weekend.

This morning, they locked up--again.
When this happens, the passenger side wiper arm goes beyond the side of the window and sticks there.

Needless to say, I'm disappointed--not to mention the safety issue when driving in the rain.

This system was brand new and only lasted about 15 minutes in the rain.

What can i do to make my wipers more reliable? i dont have the money to do what everyone laughingly tells me--which is to buy a new truck.

I can afford new parts, but a new truck? come on.... =/

Anyways, if someone has bought and installed a better system, i'm ALL EARS!

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I've also installed a new wiper switch recently and the wiper motor works fine (not sure if it's the original or not).

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I think the problem lies in the amount of "grip" between the male pivot gear and the female ID gears on the wiper arm.

the "teeth" in these gears are small and i'm guessing the angular momentum of the wiper arms is too great for the amount of engagement between the male and female teeth--thus they slip and the passenger arm goes over the edge of the window and gets hung up.

all of these parts were brand new from one of the old truck sites on the Internet (name withheld).

There needs to be a way to SECURELY engage the wiper arm to the pivot gears attached to the linkage under the cowel. It's too bad no one mfg's these pieces with a threaded male and a nut to pinch the wiper arm onto the pivot. that might be one cure. I can think of a few other heinous ways, but i would like to have a "proper" cure (like a system from another year/model truck) that is much more robust--no southern engineering, please. (i'd rather not JB weld them together. =/

If anyone has any ideas, please dont hold back... PLEASE!


Thanks,

T

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[tferbend]

BTW, they locked up at highway speed--about 60-65 mph...

Would the air hitting the windshield cause the wiper arms to lift?

[70 Suburban]

they used to have air foils on them to assist when on the highway.

[astrochimp]

GM dealer "fixed" the wipers on one of my newer cars with............sandpaper. small strip between wiper arm and piviot. Held up for 6 + years.

[LILRED66]

I have pulled many, many factory wiper arms off the arm actuators and never experienced one of them slipping or spinning at this connection. Without seeing your application, it is hard to offer up a remedy. Although the teeth are very fine, this connection is very tight and a very low tolerance.

Can you post some pictures of what you have?

[markeb01]

If - the problem is the internal teeth on the wiper arm getting stripped out or losing their grip, you might try finding some new old stock original arms on Ebay. The originals on my 1960, and the NOS replacements both have very fine teeth inside the wiper arm mounting cup, matching the splines on the drive spindle. Most aftermarket brands I've wasted my money on have far fewer teeth. Obviously these aren't as strong as the originals. Also, they make it hard to align the arms when they are in the parked position. It's disappointing that replacement parts can't just be made to duplicate the originals, instead of making them "close".

[smoky02]

What did you ever do to fix this? I have the same problem in my truck. On occasion the wipers will just stick and won't move until I pump them.
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