Introduction

This guide will show you how to remove a punctured tube and replace it.

Read through the Free Wheelchair Mission GEN 1 Tools guide guide to familiarize yourself with all the tools necessary.

Image 1/3: Remove the wheel and set it aside. Image 2/3: You can also use a 19mm socket instead of the multitool. Image 3/3: You can also use a 19mm socket instead of the multitool.
  • Unscrew the axle bolt Using the Free Wheelchair Mission Custom Multi-Purpose Tool on the bolt head and a 19mm crescent wrench on the nut.

  • Remove the wheel and set it aside.

    • You can also use a 19mm socket instead of the multitool.

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Image 1/2: Image 2/2:
  • Unscrew the cap of the tube stem and set it aside.

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  • Release any air that remains by pressing down on the piston in the head of the stem.

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Image 1/3: Pop the edge of the tire out of the rim of the wheel by pushing down on the lever. Image 2/3: Clip the opposite end of the lever onto the closest spoke. Image 3/3: Clip the opposite end of the lever onto the closest spoke.
  • Take a tire lever and fit it under the edge of the tire.

  • Pop the edge of the tire out of the rim of the wheel by pushing down on the lever.

  • Clip the opposite end of the lever onto the closest spoke.

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Image 1/1:
  • Take another tire lever and repeat step 4 roughly 2.5 inches away from where you are holding the other tire lever.

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  • Holding one tire lever in place, slide the other lever around the rest of the wheel until the side of the tire is completely free of the rim.

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Image 1/2: Reach under the tire and pull the tube out. Image 2/2: Reach under the tire and pull the tube out.
  • Push the stem of the tube back through the hole in the rim it comes out of.

  • Reach under the tire and pull the tube out.

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Image 1/2: Set the cap aside someplace safe. You will need to put it back on later. Image 2/2: Set the cap aside someplace safe. You will need to put it back on later.
  • Unfold the new tube and unscrew the cap of the stem.

    • Set the cap aside someplace safe. You will need to put it back on later.

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Image 1/2: Lift the lever on the head of the pump up. Image 2/2: Lift the lever on the head of the pump up.
  • Fit the stem of the tube firmly into the hole in the pump that comes on the frame.

  • Lift the lever on the head of the pump up.

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Image 1/3: Pump a small amount of air into the tube so that it holds its basic shape. Image 2/3: To pump air into the tube pull the piston out then push it back in. Image 3/3: To pump air into the tube pull the piston out then push it back in.
  • Pull the handle of the piston at the bottom of the pump out.

  • Pump a small amount of air into the tube so that it holds its basic shape.

    • To pump air into the tube pull the piston out then push it back in.

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Image 1/2: Push the rest of the tube under the tire so it sits evenly on the rim. Image 2/2: Push the rest of the tube under the tire so it sits evenly on the rim.
  • Push the stem of the tube through the hole in the rim so that the head is on the outside.

  • Push the rest of the tube under the tire so it sits evenly on the rim.

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Image 1/2: Pump air into the tube until the tire is firm and can support you weight. Image 2/2: Screw the cap back onto the head of the tube stem.
  • Push the tire back onto the rim working your hands around the wheel.

  • Pump air into the tube until the tire is firm and can support you weight.

  • Screw the cap back onto the head of the tube stem.

  • If you have a pressure gauge it should read around 40 psi.

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Image 1/2: Make sure the handle faces out. Image 2/2: Make sure the handle faces out.
  • Put the wheel back on the axle and screw in the bolt using the multitool or 19mm socket and 19mm crescent wrench.

    • Make sure the handle faces out.

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Finish Line

Andrew Blocher

Member since: 04/19/2013

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Cal Poly, Team 14-7, Maness Spring 2013 Member of Cal Poly, Team 14-7, Maness Spring 2013

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