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Old 08-08-2018, 03:16 PM   #1
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Pantograph wipers don't hold to glass?

I've got three separate pantograph wipers. None of them are holding tight to the glass anymore. When lifted from the glass they tend to stay lifted, pressing them back to the glass doesn't have them stay there.

The manual says they're by Exalto.

EXALTO WIPERS #M-75000-04 ( MOTOR, ARM & BLADE )
COLD, HERSEE WIPER SWITCH
BLADE: 800MM ARM:690MM

I don't know the motor model, but they're all three mounted inside, behind a wood valance panel.

Are these serviceable at all? Or am I looking at replacing the arms completely?

Using the Internet Archive is handy for bringing up old websites. I found Exalto's pages from 2004.
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Old 08-08-2018, 03:43 PM   #2
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Good question, mine misbehave the same way. The Admiral has to go out and tweak then while we're underway to get them to 'work'.....a term which I use the loosely.

There are a number of replacement arms out there. My motor is working fine and suspect I can simply replace the arm. I have this on my todo list over the winter.
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Old 08-08-2018, 04:08 PM   #3
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WD40? Spring tension?
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Old 08-08-2018, 05:31 PM   #4
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Springs weak or hinges up at motor end binding. Flip them up and check the springs.
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Old 08-08-2018, 06:30 PM   #5
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I tried using some lubricant to free them up but I think corrosion has taken it's toll. I think it's a combination of failed springs and bound up pivoting points. The pivot point where it hinges at the motor shaft appears to be riveted in place. I'd have to drill it out and replace it on each arm (six total, 3 sets of 2 for the pantograph action).

My question is whether it's worth some elbow grease, a few parts and a rattle can of paint to refurbish them. Or whether it's better to just replace them outright. I've no idea what parts are involved, or how readily they can be obtained. Depending on which type these cross-reference to in modern part numbers it'd be between $130 and $250 per arm.
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Old 08-08-2018, 06:59 PM   #6
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great thread as I have the same problem. wd 40 helped but not perfect. please advise of any replacement success--I may need to go that way.
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Old 08-08-2018, 07:40 PM   #7
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I replaced a couple springs with SS springs used for a motorcycle exhaust. I had to form a C clip out of SS welding rod as the springs were too tight to the window as is. Doin that is tricky to get right, too much tension and the blade friction is too high and it drags the motor down,

I did buy one new wiper blade, it will have a new spring.

Spring source was this 38 MM length, maybe 43 MM would fit better not need adjusting.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 08-08-2018, 07:52 PM   #8
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Quote:
Originally Posted by Ski in NC View Post
Springs weak or hinges up at motor end binding. Flip them up and check the springs.
Yes, this will be the problem. Replacent springs of similar size should be easy to find in any hardware shop. I had to do that to my wiper arm once - many years ago - they last a long time, but do become 'tired' eventually. It is that spring about 5-6cm long fitted in under the cover over the nut where they bolt on you need to replace. Not even necessary to remove the wiper from the mount usually.
Just make sure the spring length is such that it takes some muscle (and needle-nosed pliers) to stretch it to hook the thing up at each end, or the wipers won't 'kiss' the glass firmly enough.
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Old 08-08-2018, 09:06 PM   #9
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https://www.amequipment.com/windshield-wiper-arms/


http://www.exalto.com/en-us/wipers/
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Old 08-09-2018, 07:36 AM   #10
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I've e-mailed Imtra & Exalto inquiring about my options. I first have to nail down which model currently matches what I've got installed.

In looking through their website there are replacement assemblies for the 'Idler Gallery' portions of the arms.
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Old 04-04-2020, 02:28 AM   #11
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Anyone just use rain x and and forget wipers? I was thinking about removing them.
Anyone else?
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Old 04-04-2020, 03:54 AM   #12
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Two of my three do not work. The third one, directly in front of the helm works but not very well even with a new blade. RainX works well enough that I am comfortable running without wipers.
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Originally Posted by Pmcsurf1 View Post
Anyone just use rain x and and forget wipers? I was thinking about removing them.
Anyone else?
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Old 04-04-2020, 06:05 AM   #13
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This is a common problem on OTR trucks and large buses.


There are helper springs sold at truck supply places , probably on line too.
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Old 04-04-2020, 06:24 AM   #14
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Anyone have experience enough with linear wipers to recommend them over pantographs, considering the very high expense?
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Old 04-04-2020, 09:17 AM   #15
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Quote:
Originally Posted by Pmcsurf1 View Post
Anyone just use rain x and and forget wipers? I was thinking about removing them.
Anyone else?
It'll depend on the angle of your windshields and what kind of spray your boat typically throws, plus how much you run in the rain. I had a wiper switch issue that took out 2 of my 3 wipers one day last year on a somewhat sloppy day. Not a big issue for the most part, but I had a couple incidents where I threw up a big enough wall of spray that when a bunch of it landed on the windshields I was running blind for a good 10 - 15 seconds until they cleared enough. Fresh rain-x would have helped some, but with my raked-back windshields they just don't drain all that fast.

As a test, keep the wipers in place, but make a point not to use them. See how often you find yourself needing them.
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Old 04-04-2020, 10:01 AM   #16
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Rainx. We took the wipers off my friends lobster boat in 1998, never to return. Its a wet boat like a duck. Use it on my Monk as well.
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Old 04-04-2020, 10:12 AM   #17
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Rainx. We took the wipers off my friends lobster boat in 1998, never to return. Its a wet boat like a duck. Use it on my Monk as well.
Can RainX be used safely on a polycarbonate flybridge surround?
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Old 04-04-2020, 10:14 AM   #18
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Can RainX be used safely on a polycarbonate flybridge surround?
NO!!!
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Old 04-04-2020, 10:30 AM   #19
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NO!!!
I just found this on the Internet while Googling Rain X.
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Old 04-04-2020, 10:37 AM   #20
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RainX works great in the rain. It doesn’t work on those days where you are getting salt spray over the bow. If you are getting green water over the bow it works great. It’s the occasional spray over the bow we’re the water evaporates so quickly that you end up with a salty window. That’s when you will wish you had real wipers.
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