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Inflate presta valve - Trek 4900

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To inflate a presta valve you need to yurn the top part of the walve counter clockwise at least 3 turns. the pump you are using must be for this type valve,or you can by an adapter. spin pump nozzle on to valve, add aie , remove and tighten top of valve. presto!

Posted on Dec 12, 2014

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Posted on Jan 02, 2017

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1 Answer

Fix flat tire


You probably have a Presta valve. Go to a bike shop and get an adapter (for about a buck and a half) it screws on that valve and then you have a regular valve to inflate

Aug 30, 2013 | Diamondback Sorrento 26" Mountain Bike

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Im trying to figure out how to inflate the trek 4900 tire, its not your normal valve stem and i havent found anyone that know please help me?


Where did you look? Search for "inflate bicycle tire" or "inflate presta valve".

Search engines work for most common questions - immediately.

Aug 04, 2011 | Trek 4900

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How do i set up the pump to inflate a presta valve tyre?


If it is not a Presta pump, then you will need an adapter. These adapters usually run for less than a dollar and are easy to use. You can just screw it onto the Presta valve and then it converts it to a Schrader. You can see what they look like HERE. They should be available at any bicycle, camping or hiking store. Good luck and be safe riding! (Helmets are your friend)

Mar 04, 2011 | Topeak Peak Master Blaster Dx Pump

1 Answer

How do you inflate this tube with the presta valve?


The following link is a good explanation of inflating a presta valved tube if you have a pump with a presta valve head.

If you have an older pump that does not have a presta valve head, you can purchase a schrader valve adapter from your local bike shop that screws onto the presta valve and will allow you to utilize a pump with a schrader head.
A good explanation can be found here: http://bicycletutor.com/presta-valve/

Feb 18, 2011 | Cycling

1 Answer

The pressure gauge on my Topeak Joe Blow Ace floor pump is not working. The pump works fine. How do i take the pump apart and what should I be trying to do to repair?


http://www.ehow.com/how_4779541_inflate-bicycle-tire-presta-valve.html

  1. Rotate the wheel so the valve is resting just above the floor. Remove the valve cap.

  2. Unscrew the locking nut on the valve stem. Quickly press down the stem to loosen the seal. You should hear air escaping when the stem is pushed in--if you do not, loosen the nut and try again.
  3. Press the pump head onto the valve and flip the locking lever to make a seal. You'll hear air escape, but it should stop after you've locked the lever. If air continues to leak out, remove the pump head and reattach it.
  4. Make two pump strokes and listen for air moving into the tire. If the pump handle becomes hard to press down after only a few strokes, or if the pressure gauge elevates extremely quickly, remove the pump head and repeat Step 3.
  5. Inflate the tire to its recommended pressure. Remove the head by unlocking its lever and quickly pulling it off the valve stem. Secure the valve's locking nut and cap.
Presta Compressor Toolwww.prestaflator.comInflate Road or Mountain Bike Tires Accurately in Seconds!


Read more: How to Inflate a Bicycle Tire With a Presta Valve ' eHow.com http://www.ehow.com/how_4779541_inflate-bicycle-tire-presta-valve.html#ixzz1Brv5VfAX

Jan 09, 2011 | Topeak Joe Blow Ace Floor Pump

1 Answer

HOW DO I PUT AIR IN A MOUNTAIN BIKE TIRE WITH A PRESTA VALVE WITH A TOPEAK MINI MASTERBLASTER PUMP.


http://www.ehow.com/how_4779541_inflate-bicycle-tire-presta-valve.html
  1. Rotate the wheel so the valve is resting just above the floor. Remove the valve cap.

  2. Unscrew the locking nut on the valve stem. Quickly press down the stem to loosen the seal. You should hear air escaping when the stem is pushed in--if you do not, loosen the nut and try again.
  3. Press the pump head onto the valve and flip the locking lever to make a seal. You'll hear air escape, but it should stop after you've locked the lever. If air continues to leak out, remove the pump head and reattach it.
  4. Make two pump strokes and listen for air moving into the tire. If the pump handle becomes hard to press down after only a few strokes, or if the pressure gauge elevates extremely quickly, remove the pump head and repeat Step 3.
  5. Inflate the tire to its recommended pressure. Remove the head by unlocking its lever and quickly pulling it off the valve stem. Secure the valve's locking nut and cap.
Read more: How to Inflate a Bicycle Tire With a Presta Valve ' eHow.com http://www.ehow.com/how_4779541_inflate-bicycle-tire-presta-valve.html#ixzz1Brv5VfAX

Nov 02, 2010 | Topeak Mini Master Blaster

1 Answer

I have just purchased a Topeak Mountain Morph pump, which can be used with both Presta/Scrader valves. I have a presta valve on my bike, but am not able to inflate my bike. Not sure if I am doing...


http://www.ehow.com/how_4779541_inflate-bicycle-tire-presta-valve.html
  1. Rotate the wheel so the valve is resting just above the floor. Remove the valve cap.

  2. Unscrew the locking nut on the valve stem. Quickly press down the stem to loosen the seal. You should hear air escaping when the stem is pushed in--if you do not, loosen the nut and try again.
  3. Press the pump head onto the valve and flip the locking lever to make a seal. You'll hear air escape, but it should stop after you've locked the lever. If air continues to leak out, remove the pump head and reattach it.
  4. Make two pump strokes and listen for air moving into the tire. If the pump handle becomes hard to press down after only a few strokes, or if the pressure gauge elevates extremely quickly, remove the pump head and repeat Step 3.
  5. Inflate the tire to its recommended pressure. Remove the head by unlocking its lever and quickly pulling it off the valve stem. Secure the valve's locking nut and cap.
Read more: How to Inflate a Bicycle Tire With a Presta Valve ' eHow.com http://www.ehow.com/how_4779541_inflate-bicycle-tire-presta-valve.html#ixzz1Brv5VfAX

Aug 25, 2010 | Topeak Morph Pump

1 Answer

I have a Zefal HP frame pump. I'm trying to inflate a tire with a Presta valve. It just won't inflate. It doesn't latch onto the valve and seems to big for the valve body. Is there a diagram available...


Let's hope you didn't force it and snap the plastic point off.

Most Zefal pumps come with a reversible head that can adapt to either Presta or Schreader (like on cars). You unscrew the barrel at the working end of the valve, carefully tap out the rubber cylinder and the plastic internal piece behind it.

Insert the plastic piece in either of two ways. Pointy part Out (for Schrader) or just a round opening Out (for Presta). Rotate the rubber piece correspondingly to show the large opening for Schrader or the smaller opening for Presta and place it inside the valve over the plastic piece. Screw the knurled barrel on tightly.

Aug 12, 2010 | Zefal Bicycle HPX 3 Road Frame Pump

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