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EFV-8 Club Forum / General Ford Discussion / Vacuum winshield wipers

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Discussion Topic: Vacuum winshield wipers -- page: 1 2

carcrazy

05-28-2021 @ 7:07 PM

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A healthy flathead should have about 19" of vacuum at idle when it is at sea level. It will have less vacuum at altitude. It will also have less vacuum when the car is driving down the road and the engine is under a load or accelerating.

Steve Kennedy

05-28-2021 @ 6:26 PM

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I had my original '36 vacuum wiper rebuilt several years ago. And it has taken that long to finish the rest of the project . Anyway, they don't work. First thing I want to do is check to see if there is sufficient vacuum on my 8BA. I borrowed a vacuum gauge from a friend and will hook it up tomorrow. How much vacuum should I hope to have?
Steve

ford38v8

05-27-2021 @ 3:55 PM

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51woodie, the vacuum hose can be removed from the engine side, and spray oil into it while manually operating the wiper motor. Any oil will work if the internal blade is not totally shot, but remember that the engine will be the ultimate recipient of what goes into that hose. A rebuild of the wiper motor will work wonders for it! When working properly, the control knob will function as a speed control, from dead slow to h*lla fast.

Alan

05-27-2021 @ 2:00 PM

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I removed the rubber vacuum hose from the base of the carb and sprayed the lube directly into the hose. The oil spray can did have the long red plastic tube on its nozzle....Worked like a champ....

oops,,,,I forgot to mention that I did operate the wiper arms manually a couple of times back and forth before I reconnected the vacuum hose to the base of the carb....

This message was edited by MG on 5-27-21 @ 3:51 PM

51woodie

05-27-2021 @ 1:44 PM

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Maybe I hijacked Mark's post, but I'm still wondering about the question I asked, on the process to lube the wiper motor. Where to put the lube?

carcrazy

05-26-2021 @ 11:14 PM

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You may be able to install a double action mechanical fuel pump where the original single action pump was located on the engine. There was a double action pump available on 1951 thru 1953 Fords, not sure one was available for 1948s. The double action pump provides fuel to the engine and vacuum to the windshield wipers.

ford38v8

05-26-2021 @ 8:03 PM

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I’ve always considered that since there are so many modern conveniences and snazzy doodads available on new cars these days, why not just buy a new car with tons of creature comforts and let some other dude play museum docent at the car shows.
By the way, I kinda like the tiny little wiper blades that go fast when I don’t, and go slow when I stomp it! My car radio Hums also, but I can’t seem to find Fibber McGee and Molly on when I’m driving.

Alan

woodiewagon46

05-26-2021 @ 6:14 AM

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There are several electric wiper kit's available for your car. Working under your dash to install the kit can be a real challenge though and you might need to remove your radio. As others have suggested I would also tend to get my original wiper working. Perhaps a vacuum canister would help your situation. Canisters were used in numerous cars and are plentiful in salvage yards. If you aren't a stickler for something stock, you could install a vacuum pump in the system so you would never run out of vacuum. Ford did offer an accessory vacuum storage tank for '46-'48 that fit under the left front fender but they are pretty scarce.

Jacques1960

05-26-2021 @ 5:01 AM

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The purpose of introducing lubricant (brake fluid, ATF, etc.) is to rejuvenate the internal diaphragm.

Generally works extremely well.

Jacques1960

05-26-2021 @ 4:59 AM

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The motor is one thing, the diminutive wiper blades yet another !

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