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Having a problem using the schrader valve on my pump. It's now apart and I can't figure out how to put it together and how to work it on my bike.

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The guts are all the same. Look at this one. You can flip things over and make it fit presta, too.

http://www.parktool.com/product/half-pint-mini-pump-pmp-4

Posted on May 20, 2011

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I purchased a Schwinn bicycle pump, but I'm having trouble determining how to use it to inflate my standard bike tires. The instructions that came with the pump assume that I know the name of the type...


There are only two types - presta and schrader. If the instructions named them you could just Google them for descriptions and all kinds of other answers. The schrader is what we think of as the automotive style.

http://en.wikipedia.org/wiki/Presta_valve

http://en.wikipedia.org/wiki/Schrader_valve

Back to the search engines, "how to..." usually finds answers, such as "how to inflate a presta valve tube".

http://www.terratrike.com/media/documents/PrestaValve.pdf

http://www.youtube.com/watch?v=wreZho5I2E4

http://en.wikibooks.org/wiki/Bicycles/Maintenance_and_Repair/Wheels_and_Tires/Inflating_Tires

Aug 02, 2011 | Schwinn Cycling

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Which side do I use for a presta valve? How do I close it; yellow lever at a right angle or parallel?


The Side for a presta valve doesn't have what appears to be a pin inside. The schrader side has the pin. Just try putting it on a valve and pumping. If there isn't an air tight fit it means you need to move the leaver to the other position.

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My rear tire won't inflate. My Columbia Trailhead Sport was bought for me as a gift about 5 years ago, and I rode it for about a year, then moved and kept it in the basement. I brought it back out to...


Nothing is wrong, it's just a different kind of valve called a presta valve instead of the more common schrader valve. Just stop by the bike shop and ask them to pump it up for you or if you want, to adapt the rim to fit a schrader valve. If you do that have them put in the new inner tube.

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How do you use it? there's no pin or anything. Am


If by no pin on the inside and it won't work with the short stubby valve that just means it's ment for a presta valve. Return the pump and get one that works with a schrader valve.

Jul 14, 2011 | Topeak Mini Master Blaster

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HOW TO USE


Flip the lever on the valve end out (perpendicular) and secure the pump onto the tire valve, making sure it goes all the way in, then flip the lever down flat agains the pump. This should secure it so if you pull on it, the pump doesn't go anywhere and no air comes out. It looks like the handle flips out to make it easier to pump. Now pump up the tire until it starts looking full and check the pressure. A pressure guage is recommended. Lift the lever again to release (you may have to tap it off of the tire valve) when you're done.
Make sure you have the correct pump for the valve. There are two types of valve: presta, which is long and skinny, mostly used on higher end road bikes, and schrader (which you probably have) is the common type you'll see on a wide range of bikes. Your pump should fit a schrader.

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Download this from Blackburn. It will give you an idea how it all fits together even if it's not a Blackburn pump.

http://www.blackburndesign.com/manuals/Mammoth_Airstik_MAP.pdf

Not all pumps come ready for schrader. Maybe you have to reverse the head parts.

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Look at this so you have a handle on what the shrader valve looks like.

Put the parts together as follows: insert the hard plastic piece so it protrudes to depress the center valve in the tube; place the round rubber piece over the frist piece wih the large opening facing outward toward the tube; snugly screw on the cap to compress the first two pieces.

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Can't get this pump to work on either schrader or presta valves! Help!


Its probably the fact that there are two separate holes for presta anad schrader, if so put your finger over the one you want to use and give small pump to vent it then attach, if not then you have to screw off the cover and invert the inner rubber core for presta or schrader, can you give me more details or pic...

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