How To Change A Rear Bike Tube. If you suffer a puncture or crash your bike the inner tube can easily become damaged so changing them out becomes one of those jobs that all cyclists have to do now and again. Step 1 - Position the Bike.

Place the appropriate speed on your bike so the chain have to go to the smaller rear sprocket cassette. A bike inner tube is the rubber balloon-like tube that fits inside your bike tyre and does the job of holding the air cushion that makes for those smooth rides. Use a 10 mm wrench to loosen the shifter cable locknut found near the adjuster at the rear of the bike slightly.
Take the nut from the old tube and thread it just enough to keep the valve stem from slipping out of the rim.
We will also diagnose potential causes of. The only thing to be done is to remove the tire completely and replace or mend the inner tube. Disconnect the shifter cable. When removing the wheel remember the brakes should.

