Harbor freight vacuum pump manual

You could clean the oils off the exhaust hose fitting and the place it attaches, and epoxy it in backwards, with the hose barb pointing into the threaded hole. You might need a spacer such as a large nut to keep the hose barb from sticking all the way to the bottom of the threaded hole; I'm not sure. Then you'd need to epoxy a new hose barb on top of that. Hot glue would probably work, if you duct tape the hose to the cylinder near the joint, to avoid stressing the joint if the hose gets pulled on.

That would let you make a vacuum pump for around 13 dollars with stuff from the auto parts store and a home improvement store, and not have to wait for mail order. Question 3 months ago on Introduction. I have been searching online for what I thought was a simple question with no luck and it is related to your post.

I was looking to use a syphon squeeze ball pump normally used to suck gas and other liquids, but use it to suck air and create a vacuum Not looking for a project here just wanted to buy a syphon ball and use it to suck air like you did in your peeps video Do you think that this would work? I have an old pump which I'd love to be able to use again. The 'lip' part of the piston disc is somewhat disintegrating. Is this why there's no suction?

Is the lip replaceable? Instead of the valve from McMaster-Carr or the fish store, you can get a vacuum check valve at the same auto parts store where you get your pump. Saves you from having to order the darn thing and pay shipping on it, and it's actually built for holding vacuum. It may have a little more restriction than that other thing, but sometimes you need something available.

I just finished building the Vac pump in this "Instructable" and I was easily able to pull enough vacuum for the testing I use here at work. I need about mmHg to test the instruments we work on, and this was WAY better than the converted soccer ball pump that died the other day.

It took me about 45 minutes from disassembly of the foot pump to a working vacuum. Hey man would this be able to get 25psi in a vac chamber that's the minimum I need please get back thanks. Even ones with a metal shaft usually don't work!

So, I just used my pump as a portable source of air for my air gun. Thanks, I'm going to try it, but I'm going to use a tire valve stem with my vacuum chamber so I can use the hose that comes with the pump. Thanks for the inspiration. Any advice for how to use a found pump that does have a gauge? It's the first one I've found thrifting, and would be nice to put to use Will this effective for a physics experiment?

I would want to use this for a Bell in a Jar experiment for our project. I've tried this already I don't know if there is something wrong but the air sucked is very little. I used an aquarium check valve because its hard to find a check valve like yours in our place. I've searched for every autosupply and hardware store and they don't have it. By drcrash Follow. More by the author:. About: I'm a research scientist who likes to design and build things, especially cheap, elegant tools for building things you wouldn't have thought you could make yourself.

More About drcrash ». A vacuum pump is just an air pump that you use for sucking rather than blowing. You can convert an old-fashioned "floor pump" "bike pump" into a vacuum pump that can take over 75 percent of the air out of something. That's several times as strong as a vacuum cleaner's pull, and three quarters as strong as the best possible vacuum pump.

The net atmospheric force on whatever you evacuate will be over 11 pounds per square inch or over pounds per square foot , which is enough for many tasks requiring vacuum. For those of you who are not metrically impaired like most of us in the U. Some examples: 1 Vacuum pumps made this way are in use around the world, in non-industrialized areas, for vacuum packing food.

Especially to save seeds for the next year's planting, by killing bugs and preventing germination. A smaller manual pump, designed for evacuating wine bottles, is often used for laminating skateboard decks, using a commercial vacuum bagging kit from Roarockit called the "Thin Air Press". Our bigger pump pulls about as hard, but requires considerably less pumping. It can also be used for vacuum bagging composites like fiberglass, to squeeze out excess resin and make stronger, lighter parts.

Try Peeps. Now use a wrench to unscrew the hose fitting from the base of the pump. Screw the hose fitting back onto the pump, and tighten it hand-tight with a wrench. Did you make this project? Automobile Manuals. Automobile Accessories Manuals. Automobile Battery Charger Manuals. Automobile Parts Manuals. Baby Furniture Manuals. Baby Swing Manuals. Baby Toy Manuals. Battery Charger Manuals.

Bicycle Manuals. Bicycle Accessories Manuals. Binoculars Manuals. Biscuit Joiner Manuals. Blower Manuals. Blowtorch Manuals. Boat Trailer Manuals. Bouncy Seat Manuals. Brush Cutter Manuals. Building Set Manuals. I knew the Mityvac was gonna be crap when I bought it although admittedly I figured it would make it through the first pull of the handle without a catastrophic failure , but it was the only tool store close to his house, my house and tools were 2 hours away, the thing was cheap, and my friend was paying for it anyway.

Last summer we built a shed and I needed a long level to get the footings even with each other. Many of their tools are just fine, but the ratchets and wrenches tend to fit less well in your hand than more expensive Snap on, Mac or Matco tools. In my opinion, they are geared more towards the DIY mechanic, not the pro.

Snap on extensions are knurled, and sometimes it makes it easier to get a grip on them. Their locking extensions are really junky and cumbersome to use. The ratchets tend to have a fat head and are harder to use. The deadblow hammers have an inferior handle, not very comfortable to hold. Snap on prybars have a vastly superior handle, much easier to hold.

The only craftsman tools I would consider using professionally are the craftsman professional series. But, as I said, they are definitely inferior. You pay less, and you get less. So be it. When I compared the welds on Lincoln jack stands versus Harbor Fake, it was shocking. My dad started using Snap-On tools in his service truck because he thought they would last.

But he found that Snap-On failed just as much as Craftsman tools. I remember the ammo boxes full of failed Snap-On tools he would hand over for warranty replacement.

He told the guy, fine! Keep your crappy Snap-On tools. At least when a Craftsman tool breaks, I can go to a Sears store and get it replaced right on the spot with no argument.

After that, his service truck was filled with Craftsman tools. I always stop by the ATM the night before, so I can pay the man on the day he shows up.

He told me to bring a check for such and such amount. Things that can kill me get bought elsewhere, and I buy a lot bigger than I need. I do not need 4-ton jack stands to support an MR2 or a TL.