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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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