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Old 01-11-2018, 09:37 PM   #1
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Chattering wipers

I have now owned two class A motorhomes. Both of which have had chattering wipers. They seem to work fine in one direction but chatter in the other direction. This happens with new or old blades. Does anyone know how to fix this issue or is this the way they all work.
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Old 01-11-2018, 09:52 PM   #2
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Years ago when I had a 1973 Travco I had the same problem. The solution to it was I bought a pair of wiper arm tensioners. I don't know if they are still made. They were just made of steel and fit right onto the wiper arm.
May try ebay or amazon.
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Old 01-11-2018, 09:55 PM   #3
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have you ever tried the 0000 steel wool with RainX? I've done it on my older pick up and several newer cars, including the coach. It really helps with sunny days visibility and the wipers work better as well in the rain.

I'm not sure if it would help with the chattering, but something to consider.

I think RVGeeks put together a video and I know it's on YouTube.
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Old 01-11-2018, 10:00 PM   #4
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I have done the steel wool rainX on my toad but not on RV. Will try it.
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Old 01-11-2018, 10:27 PM   #5
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Rain-X or Rejex on the windshield will cut that way down.
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Old 01-12-2018, 08:17 AM   #6
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I tried Rain-X on our motorhome windshield, and it's fantastic when it works. However, I also had chattering. Maybe because I didn't clean it fully because each time a wiper stopped during a sweep, it left a black mark. The 0000 steel wool certainly does work and I used this to clean the windshield on my wife's VW Jetta when the wipers began chattering.

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Rain-X or Rejex on the windshield will cut that way down.
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Old 01-12-2018, 08:53 AM   #7
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I had chattering wipers and needed to put a slight twist in the arm to get the rubber blade flipping the same amount each way. See if yours are.

Not sure of your setup, but if it uses the tiny screw and lock nut, it may be to tight. The blade needs to flop around in the bracket.
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Old 01-12-2018, 08:59 AM   #8
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Wiper on our MH is held on with a single bolt, wiper flops around like Twinboat says. I had chattering, so I flipped the blade around in the arm and cleaned the rubber well with rubbing alcohol. Like a new blade.
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Old 01-12-2018, 09:23 AM   #9
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I have had the same problem with chattering. I purchased 2 tennis balls and position them under the wiper blades to take the pressure off the blades when just sitting. I do this every time I return from a trip and it seams to have helped a lot.

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Old 01-12-2018, 09:30 AM   #10
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This is very easy to fix but difficult to describe!
The wipers chatter because the blade is not at right angles to the glass. As the blade moves across the screen, the rubber is angled back, ie trails the blade. The blade changes direction, the rubber touching the glass flips over and continues to trail the blade. Chattering is caused by the rubber not flipping over and trailing, but trying to wipe with the rubber “trailing edge” now the leading edge.
The fix is easy too once you “get” what is needed to achieve.
The metal blade assembly head needs to be perpendicular to the glass so the the rubber can flip back and forth and always be trailing.
Take two adjustable wrenches, and put a slight twist in the wiper arm as close to where the blade fits as possible. Turn the wipers on and watch carefully to see if the rubber flips over. Once the is perpendicular the rubber will flip over the way it was designed.
Unfortunately many brands of RVs have poorly designed wiper systems and the curve of the glass is not consistent with the arc of the blade so it can be time consuming getting the sweet spot where the rubber flips properly across the whole screen.

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Old 01-12-2018, 09:32 AM   #11
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Also don’t steel wool the glass, that is not the problem,
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Old 01-12-2018, 09:32 AM   #12
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Quote:
Originally Posted by Peter27C View Post
This is very easy to fix but difficult to describe!
The wipers chatter because the blade is not at right angles to the glass. As the blade moves across the screen, the rubber is angled back, ie trails the blade. The blade changes direction, the rubber touching the glass flips over and continues to trail the blade. Chattering is caused by the rubber not flipping over and trailing, but trying to wipe with the rubber “trailing edge” now the leading edge.
The fix is easy too once you “get” what is needed to achieve.
The metal blade assembly head needs to be perpendicular to the glass so the the rubber can flip back and forth and always be trailing.
Take two adjustable wrenches, and put a slight twist in the wiper arm as close to where the blade fits as possible. Turn the wipers on and watch carefully to see if the rubber flips over. Once the is perpendicular the rubber will flip over the way it was designed.
Unfortunately many brands of RVs have poorly designed wiper systems and the curve of the glass is not consistent with the arc of the blade so it can be time consuming getting the sweet spot where the rubber flips properly across the whole screen.

Pete
Well explained
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Old 01-12-2018, 03:25 PM   #13
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I never had a problem until I used a Polamer on the windshield, like rain X Makes the windshield so slippery the blade will not flip over and will chatter
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Old 01-12-2018, 04:38 PM   #14
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I wish my wiper blades would just, well, WIPE the windshield instead of just going back and forth doing pretty much nothing.
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