F350 SD Vacuum Pump Question
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Postmaster
Joined: Aug 2001
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From: Delaware
F350 SD Vacuum Pump Question
I need an electric vacuum pump for my brake booster in my '53 F100. I can buy an F350 SD Electric Vacuum Pump at a reasonable price. Much cheaper than Hot Rod pumps. I have a couple of questions about these pumps.
What are the two ports? Is one an Inlet, and the other an outlet?
What is the function of the two hoses from the ports to the body of the pump?
Does this pump switch itself On and Off, or does an external controller do that?
Does this pump provide vacuum for a PB booster?
What are the two ports? Is one an Inlet, and the other an outlet?
What is the function of the two hoses from the ports to the body of the pump?
Does this pump switch itself On and Off, or does an external controller do that?
Does this pump provide vacuum for a PB booster?
Post Fiend
Joined: Nov 2001
Posts: 6,748
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From: Tallassee, ALabama
Not sure about the pump you are asking but can answer one question for you. A diesel does not production vacuum the way a gasoline engine does and therefore needs a vacuum pump.
I know the old mechanical 7.3 was belt driven so it was able to produce vacuum all the time. I would think the electric pump is similar as the brake booster, climate controls and other vacuum motors need vacuum all the time. There is probably some type of valve to regulate the vacuum pressure.
I would look at a vacuum can also. The can is a reservoir for the vacuum system. It was used on many of the cars over the years to aid in the operation of the brake booster and other systems that needed vacuum. Some of the cans were made of tin similar to one pound coffee can and others were plastic ball shaped reservoirs. As a rule, is better to have too much stored vacuum available than need it and not have any vacuum. Ask any of the diesel truck owners who have lost a vacuum pump while towing a load. It gets very hairy to stop the truck even without a load pushing you. I know on my old 96 with mechanical pump, it took both feet and hanging onto the steering wheel to apply enough pressure to stop an unloaded truck.
I know the old mechanical 7.3 was belt driven so it was able to produce vacuum all the time. I would think the electric pump is similar as the brake booster, climate controls and other vacuum motors need vacuum all the time. There is probably some type of valve to regulate the vacuum pressure.
I would look at a vacuum can also. The can is a reservoir for the vacuum system. It was used on many of the cars over the years to aid in the operation of the brake booster and other systems that needed vacuum. Some of the cans were made of tin similar to one pound coffee can and others were plastic ball shaped reservoirs. As a rule, is better to have too much stored vacuum available than need it and not have any vacuum. Ask any of the diesel truck owners who have lost a vacuum pump while towing a load. It gets very hairy to stop the truck even without a load pushing you. I know on my old 96 with mechanical pump, it took both feet and hanging onto the steering wheel to apply enough pressure to stop an unloaded truck.
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Postmaster
Joined: Aug 2001
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From: Delaware
Larry. thanks for the reply. I think Ford electric vacuum pump will do the job. I already have a vacuum storage can, but my engine manifold vacuum is only 10" to 12" at idle, due to the cam. A storage can doesn't help, unless the vacuum is above 15".
Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 119
From: Tallassee, ALabama
Can you go to a local junk yard and obtain a used one to try? Might can get it reasonably at the pick and pull places.
Nothing says you have to use the engine vacuum. It was there, free resource and the auto companies put it to use.
Nothing says you have to use the engine vacuum. It was there, free resource and the auto companies put it to use.
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