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Going to take Saturday and try my hand at refurbing the vacuum pump on the '50 F3. I have a few questions first.
Was this a popular option or is it more of a rarity?
These were originally 6V is there any harm in running it on 12V? I've tested it on 12v and got a full 30 inHg. so ill mostly be doing a clean up and lube of the unit.
there seems to be a adjustment screw and lock nut akin to the fuel float adjustment on Holly's. I've backed it all the way our and honked it all the way in with no noticeable drift on the gauge, it stays solid at 30 inHg on the vacuum side and 4 psi on the exhaust.
I'm trolling through the inter-webs trying to find out what I can about the pump. From what I have found it's a Trico electro-vac that GM used for their products years 40-55. As is the red illuminated dash switch thats on my F3. Seems odd at first but it explains why i have a Chevrolet heater in my cab.
Anyone have pictures of a correct Ford vacuum pump and dash switch, or was Trico the only ones in the game at the time?
I got a pump like pictured above from a forum member. It is alleged from an F3. I've run mine for a short time in the test mode on 12v. I do not believe it would be happy long term on 12v. If I were to clean and oil it, it may do well. Yes, it does pull good vacuum.
Some US states required a vacuum pump (California most notably) because the manifold vacuum powered wipers were worthless in the mountains. But AFAIK the only way Ford addressed the requirement was with the dual-diaphragm fuel pump/vacuum pump operated off the cam. Trico may well have offered the electric as an aftermarket way to address the problem.
It's just curious that an F-3 would have that, yet I've never heard of one on an F-6 or larger truck.
Just out of curiosity. Am I correct to assume this would be connected to the line that runs to the manifold, (instead of running to the manifold). and then to the wiper motor. Sort of, "in line"?
My thought, of course, is that those of us with 12 volt systems could easily and cheaply resolve the vacuum wiper issue by simply installing one of these under the dash.
I saw one on EBay for a '57 FI Chev without the electric motor, and it appears that a 12v heater blower motor would match up. http://www.ebay.ie/itm/111777973524
My thought, of course, is that those of us with 12 volt systems could easily and cheaply resolve the vacuum wiper issue by simply installing one of these under the dash. Vacuum Pump - 12V
Would that particular pump have enough volume? Perhaps with a reservoir? I don't know. I believe I would opt for a pump from a diesel car or truck.
Summit Racing and Amazon have hundreds of 12v automotive vacuum pumps to choose from as well as reservoirs. Prices are all over the board. I'm inclined to stay with a new pump.
Ok being a dummy on all things electrical &/or vacuum (except when my wife tells me to vacuum the dog hair up or else!) are you all saying a small vacuum pump would run electrically say under the dash and replace the line from the engine to the wipers? This would be able to run the wipers at a better speed? What size pump or vacuum sucking power (if that is a correct term) would you need to accomplish good dual wiper speed?
Thanks
Would that particular pump have enough volume? Perhaps with a reservoir? I don't know. I believe I would opt for a pump from a diesel car or truck.
I don't know what the specs were on the stock set up. But, that pump lists up to 16 inches of gravity and 32 PSI. I have serious doubts the manifold produced those numbers. I do agree it would probably be best run through a reservoir. I would think 32 psi would probably be enough to damage the internals on the motor.
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