Tyre Trouble : A Complete Guideline To Fix ItPosted On: February 25, 2013 By : Ankit Shakya
If you ride a bicycle, sooner or later you will need to fix a flat or change (replace) a tire. Before beginning this process, turn your bike upside down, distributing its weight on the seat and handlebars. Now get ready to get your hands dirty.
• Tyre Levers
• Spare Tubes
The first step is to take the wheel with the flat off your bike. Do this by loosening the nuts or quick release mechanism that holds the wheel until it slides out. You may need to loosen your brakes to get the wheel off. These often have a quick release mechanism too. If you are removing a rear wheel, it will also have to be lifted clear of the chain.
Using tire levers, remove the tire by wedging the tire tool between the tire and rim, and then prying upward to lift the tire away from the rim. Keeping the first tool in place under the tire, repeat this step about four inches away with the second tool to pull more of the tire over and off the rim. Repeat this step as you work your way around the rim. The one edge of the tire you’ve been working on should start to come free of the rim quite easily.
Next, you’ll need to remove the valve stem from the rim. Coming from the centre of the wheel by the spokes, locate the valve stem and push it up and through the hole in the rim so that it no longer protrudes through the rim. Remove the tire and tube the rest of the way. After you remove the old tube, check the inside of the tire thoroughly to make sure whatever caused the flat – glass, a piece of metal, etc. – is not still lodged in the tire to play a nasty trick on you and pop a second tube.
Take the new tube and with it still flat, work it into the tire, laying it where it goes when it is inflated on the rim. Make sure that the tube is not crimped or twisted at any point and the valve stem points to the centre. Some people find that the tube is easier to work with if you put just a little bit of air in it, enough to hold it in the tire.
Put the tire and new tube back on the rim by first lining up the valve stem with the hole that it will need to go through on the rim. You must do this by working the first edge of the tire back onto the rim, easing the tube onto the rim at the same time using your fingers to carefully guide the valve stem back into its hole. Finish putting the first edge of the tire completely on the rim. When you reinsert the valve stem of the new tube into the rim, be sure that it comes straight out of the hole and not be angled in any direction.
Use your hands to work as much of the second edge of the tire onto the rim as you can. It will become more difficult as you go, and finally you will need to use the tire levers to put the last part of the tire onto the rim. Using the pump, inflate the tire to the pressure recommended on the sidewall.
Put the wheel back on your bicycle, reattaching the nuts or quick release mechanism and resetting the brakes and replacing the chain as necessary. Check to make sure that the wheel is aligned properly, that it is held securely and that it spins cleanly.