Vacuum Wiper Motor Alternative

Discuss fixes, upgrades and modifications to your M37

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Rdinatal
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Vacuum Wiper Motor Alternative

Post by Rdinatal »

Has anyone used a vacuum wiper motor from a M35 successfully on a M37?

I'm still on the fence about 24v or vacuum. It's not a daily driver so it won't be driver in the rain, by choice. The looks of the electric motors turns me off but I know they are superior.
1952 M37 - Mods = Locking hubs, Battery switch, 2 bank charger, PB, PS, Pertronix SSI, Elect fuel pump w/filter&pressure switch, Bikini top, Toolbox liners, 24v&12v circuits, Seatbelts, Original wipers w/12v pump
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Re: Vacuum Wiper Motor Alternative

Post by just me »

I modified NOS M151 vacuum wipers. I run modern blades and arms and Rain-X. Works well enough for the little rain I drive in.
"It may be ugly, but at least it is slow!"
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Re: Vacuum Wiper Motor Alternative

Post by Rdinatal »

just me wrote: Tue Jul 01, 2025 2:07 pm I modified NOS M151 vacuum wipers
How did you modify them?

Some motors look similar to the S-583-1 mounting and shaft except the manual level is on top. I think that would hit the roof if used.
1952 M37 - Mods = Locking hubs, Battery switch, 2 bank charger, PB, PS, Pertronix SSI, Elect fuel pump w/filter&pressure switch, Bikini top, Toolbox liners, 24v&12v circuits, Seatbelts, Original wipers w/12v pump
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Re: Vacuum Wiper Motor Alternative

Post by just me »

I reversed the lever and made spacers for the mounting bracket. Added a vacuum switch in the feed line. I machined output spine from modern wiper to match the shaft.
Now I run SUV rear window wiper and arm.
Then, I obtained a set of correct NOS wipers and a half dozen used ones. They are still in a box in my garage.
"It may be ugly, but at least it is slow!"
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Re: Vacuum Wiper Motor Alternative

Post by Cal_Gary »

I run a set of electrics from AB Linn-only mod is to paint them 24087 and run a single wire for power.
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Re: Vacuum Wiper Motor Alternative

Post by Rdinatal »

After seriously searching for a good set of vacuum motors I came to the conclusion that 24v electric is best in my situation. Found a set on eBay that is in a kit (everything but wires). Put an offer out to the seller, they will be delivered Friday.

I wanted vacuum as they look cool but will almost never be used. The price! Oh my. For a restoration to original, those would be perfect. Just not here.
1952 M37 - Mods = Locking hubs, Battery switch, 2 bank charger, PB, PS, Pertronix SSI, Elect fuel pump w/filter&pressure switch, Bikini top, Toolbox liners, 24v&12v circuits, Seatbelts, Original wipers w/12v pump
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Re: Vacuum Wiper Motor Alternative

Post by just me »

Truck came with vacuum. I swapped them out to electric. After a year, the disdain for the electrics grew to the point I have gone back to vacuum. I gave the electrics away.
"It may be ugly, but at least it is slow!"
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Re: Vacuum Wiper Motor Alternative

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just me wrote: Mon Jul 07, 2025 7:17 amI gave the electrics away.
🥺Yet, you didn't think of me??!!

My truck did not have anything when I got it. I would prefer vacuum just for the looks.

BTW: The ebay electric were junk so I sent them back. Still looking...
Last edited by Rdinatal on Fri Aug 01, 2025 4:09 am, edited 1 time in total.
1952 M37 - Mods = Locking hubs, Battery switch, 2 bank charger, PB, PS, Pertronix SSI, Elect fuel pump w/filter&pressure switch, Bikini top, Toolbox liners, 24v&12v circuits, Seatbelts, Original wipers w/12v pump
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Re: Vacuum Wiper Motor Alternative

Post by just me »

I just went out to my shed and looked in "The wiper box". There are two NOS units, 2 used and working units that are spare. (3 almost working. I have the parts to repair)
The only thing missing from the spare working units are the nut and spline to mount the wiper arm.
I just ran them on my A/C vacuum pump to make sure they still operate.
"It may be ugly, but at least it is slow!"
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Re: Vacuum Wiper Motor Alternative

Post by Rdinatal »

just me wrote: Mon Jul 07, 2025 11:10 am I just went out to my shed and looked in "The wiper box". There are two NOS units, 2 used and working units that are spare. (3 almost working. I have the parts to repair)
The only thing missing from the spare working units are the nut and spline to mount the wiper arm.
I just ran them on my A/C vacuum pump to make sure they still operate.
So, what are you saying? Thinking of selling?
1952 M37 - Mods = Locking hubs, Battery switch, 2 bank charger, PB, PS, Pertronix SSI, Elect fuel pump w/filter&pressure switch, Bikini top, Toolbox liners, 24v&12v circuits, Seatbelts, Original wipers w/12v pump
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Re: Vacuum Wiper Motor Alternative

Post by Rdinatal »

I've been on the fence what to do for quite a while. The Chineseium DC motors are out. Too FUGLY.

Since the truck isn't "planned" to be run in the rain and I like the look of the originals... I picked up two NOS wiper motors with arms/blades. Going to run them off a 24vdc vacuum pump.
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1952 M37 - Mods = Locking hubs, Battery switch, 2 bank charger, PB, PS, Pertronix SSI, Elect fuel pump w/filter&pressure switch, Bikini top, Toolbox liners, 24v&12v circuits, Seatbelts, Original wipers w/12v pump
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Re: Vacuum Wiper Motor Alternative

Post by Cal_Gary »

Nice!
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Re: Vacuum Wiper Motor Alternative

Post by Rdinatal »

Can anyone post a front on picture of how the wipers sit while 'parked'?

Never mind. I searched the .net and all the original vacuum wipers were parked towards the passenger side.
1952 M37 - Mods = Locking hubs, Battery switch, 2 bank charger, PB, PS, Pertronix SSI, Elect fuel pump w/filter&pressure switch, Bikini top, Toolbox liners, 24v&12v circuits, Seatbelts, Original wipers w/12v pump
Cal_Gary
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Re: Vacuum Wiper Motor Alternative

Post by Cal_Gary »

Sorry RD , I had access issues so I couldn't get in.
Gary
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1954 M37 W/W
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Re: Vacuum Wiper Motor Alternative

Post by Rdinatal »

Done.
The pump is a little noisy by once the engine is going it drowns out everything.(Pump, trains, volcanoes) :roll:
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1952 M37 - Mods = Locking hubs, Battery switch, 2 bank charger, PB, PS, Pertronix SSI, Elect fuel pump w/filter&pressure switch, Bikini top, Toolbox liners, 24v&12v circuits, Seatbelts, Original wipers w/12v pump
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