![]() Kool Stop makes a great tool called a bead jack, which helps to pull the tire bead over the rim. You should never use tools to install the tire, but very tight tires may need some help. Staring at the valve, work the bead onto the rim using both of your thumbs. The outer bead is harder to install, although most tires can be re-installed by hand. Make sure you line up the valve stem with the rim’s valve hole.Ĭarefully fit the valve through the hole and place the cap on to keep it from falling out again. The first bead of the tire should fit easily onto the rim. Now inflate the tube so it is round and place it evenly into the tire. Peel the foil from the patch and press the patch onto the tube firmly, squeezing the patch tightly onto the tube. It is very important to allow the cement to dry completely. The thinner the cement, the faster it will dry. You want a thin, smooth coat of cement if you keep fiddling with it as it begins to dry, you’ll risk making it lumpy. Once buffed, avoid touching that area with your fingers.Īpply a dab of rubber cement, and then spread it into a thin coat, using your cleanest finger. If the molding line is running along the area where the patch is to be applied, you must sand it down completely, or it will provide an air channel. You need to buff the tube so that it is no longer shiny. Use the sandpaper or scraper provided in your kit to buff the surface of the tube for an area a bit larger than the patch. Select an appropriate sized patch for the hole. ![]() Now that the rim and tire are clear, it’s time to patch the tube. If the hole was on the inner side of the tube, inspect your entire rim to make sure there are no sharp burrs in the metal, and that the rim tape is properly protecting the tube from your spoke ends. Double check the entire inner side of the tire by running your fingers along the entire surface, feeling for obstacles along the way. If the hole was on the outer side of the tube, inspect the inner surface of the tire in that spot to make sure the object that caused the puncture is not still stuck in the tire. Once you’ve found the leak, take note of whether it is on the inner or outer side of the tube. As a last resort you can submerge the tube in water and watch for bubbles, but you’ll want to avoid doing this as you’ll need the tube to be completely dry in order for the patch glue to work. Listen carefully to the entire circumference of the tube you should hear a hissing sound that will indicate where the leak is. This will expand the hole making it easier to find. Inflate the tube to approximately twice its original size. Now remove the tube from the tire, and try to keep track of where it was positioned in relation to the tire. When the tire is loose enough you can just run a tire lever around the rest of the rim to pull the whole side over.Īfter you have removed one side of the tire, the other side should come off very easily. Now the middle lever should fall out, and you can continue the process. Insert another tire lever two spokes away from the first, and a third another two spokes away. Pry one side of the tire bead over the edge of the rim, and then hook the end of the tire lever to the nearest spoke. Choose a section of tire that is away from the valve and hook one of the tire levers under the bead, directly in line with one of your spokes. Now it’s time to remove your tire, one side at a time. This tutorial is based on a schrader valve, but I will be covering the different valve types in another tutorial. There are two main types of valve stems, a schrader valve and a presta valve. Remove the valve cap and fully deflate the tube by depressing the valve stem with the hooked end of your tire lever. With the wheel removed from your bike, inspect the outer surface of the tire to make sure there are no sharp objects like a thumb-tack or thorn stuck in the tread. Your patch kit should contain a few different patch sizes, sandpaper or a metal scraper, and a tube of glue. Required Toolsįor this tutorial you’ll need a patch kit, a set of tire levers, and an air pump. If done properly, a patch will work just fine. I personally recommend replacing a tube when you get a leak, but that is not always possible.
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