Introduction

Do you have a flat tire, but don't have the time nor the strength to fill up your tires with a standard pump? Using a CO2 Cartridge is a quick and easy way to re-inflate your tires without much work compared to pumping tires full of air.

Image 1/2: Figure out which tire is flat. In this case, the rear wheel is flat. Image 2/2: Figure out which tire is flat. In this case, the rear wheel is flat.
  • Removing the rear wheel of a road bike, generally, is quite easy, but it can be messy if the bike chain has excessive grease.

  • Figure out which tire is flat. In this case, the rear wheel is flat.

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Image 1/2: This will allow the wheel to slide out smoother. Image 2/2: This will allow the wheel to slide out smoother.
  • Disengage the brakes.

    • This will allow the wheel to slide out smoother.

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Image 1/1:
  • To easily remove the rear wheel, flip the bike upside down so that it's sitting on the handle bars and seat.

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Image 1/2: Turn the quick-release lever a few times while you hold the  cap on the opposite side of the wheel. Image 2/2: Don't unscrew the lever or cap too much or else a spring will pop out.
  • Disengage the quick-release lever to loosen the wheel.

    • Turn the quick-release lever a few times while you hold the cap on the opposite side of the wheel.

  • Don't unscrew the lever or cap too much or else a spring will pop out.

    • If the spring comes out, place the spring back on the bar and tighten the cap or lever.

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Image 1/3: Pull the rear shifter into a straight line so the wheel will be able to slide out smoothly. Image 2/3: Pull out the wheel with one hand while you hold the rear shifter. Image 3/3: Be cautious with the rear shifter.
  • Pull the wheel out.

    • Pull the rear shifter into a straight line so the wheel will be able to slide out smoothly.

    • Pull out the wheel with one hand while you hold the rear shifter.

    • Be cautious with the rear shifter.

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Image 1/3: Once the tire lever is under the tire, bring it around the rim of the wheel slowly sliding the tire off wheel. Image 2/3: Ideally, three tire levers are used to get the tire off. However, one tire lever has proven to be sufficient. Image 3/3: Ideally, three tire levers are used to get the tire off. However, one tire lever has proven to be sufficient.
  • Now that the rear wheel is off the bike, use the tire lever to get under the tire.

    • Once the tire lever is under the tire, bring it around the rim of the wheel slowly sliding the tire off wheel.

  • Ideally, three tire levers are used to get the tire off. However, one tire lever has proven to be sufficient.

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Image 1/2: The valve should be the last thing that is pulled out from the wheel. Image 2/2: The valve should be the last thing that is pulled out from the wheel.
  • Pull out the inner tube.

    • The valve should be the last thing that is pulled out from the wheel.

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Image 1/1:
  • Replace inner tube or patch the hole if necessary.

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Image 1/2: Put the valve into the hole first, then bring the inner tube around the rim of the wheel. Image 2/2: Using the tire lever, pry the tire back onto the wheel.
  • Place the inner tube back inside the tire.

    • Put the valve into the hole first, then bring the inner tube around the rim of the wheel.

  • Using the tire lever, pry the tire back onto the wheel.

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Image 1/2: Image 2/2:
  • Now that the tire is back on the wheel, screw the adapter onto the CO2 cartridge and place it on the valve.

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Image 1/2: The inner tube inflates quickly, so hold the CO2 cartridge for a short period of time. Image 2/2: The valve might freeze while doing this, but this is normal
  • Press the CO2 cartridge towards the rim of the wheel.

    • The inner tube inflates quickly, so hold the CO2 cartridge for a short period of time.

    • The valve might freeze while doing this, but this is normal

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Image 1/3: Pull the rear shifter into a straight line and place the gears underneath the chain to slide into place. Image 2/3: Pull the rear shifter into a straight line and place the gears underneath the chain to slide into place. Image 3/3: Pull the rear shifter into a straight line and place the gears underneath the chain to slide into place.
  • Fit the wheel back onto the bike.

    • Pull the rear shifter into a straight line and place the gears underneath the chain to slide into place.

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Image 1/2: Twist the lever as you hold the cap on the opposite side as tight as possible. Image 2/2: Re-engage the brakes.
  • Tighten the quick-release lever and close it.

    • Twist the lever as you hold the cap on the opposite side as tight as possible.

  • Re-engage the brakes.

    • Turn the grey lever downwards on the brake, such as in step 2.

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Image 1/1: The chain was placed on a different  chain ring when the rear tire was pulled out, so it needs to readjust.
  • Pedal a little while the bike is lifted slightly off the ground to move the chain back into place.

    • The chain was placed on a different chain ring when the rear tire was pulled out, so it needs to readjust.

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Conclusion

Once you're able to place the tire back in place and inflate the tire using the CO2 Cartridge, you're ready to keep riding!

Christopher Tiran

Member since: 09/29/2015

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1 Guide authored

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Cal Poly, Team 17-1, Green Fall 2015 Member of Cal Poly, Team 17-1, Green Fall 2015

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