Written By: David Munoz (and 3 other contributors)
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In this guide, we will explain how to replace a valve stem, such that people of all mechanical backgrounds can attempt this repair. This guide assumes you have removed your wheel from the vehicle. For instructions on removing the wheel, refer to this guide.
Valve Stem
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Locate the stem valve and remove the cap.
Using the Schrader valve core bit in your 1/4" driver, unscrew the valve core from the stem.
Allow the tire to fully deflate before proceeding.
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To reach the valve stem, you will need to break the bead on the tire. The bead on a tire is where the rubber meets the rim.
Insert the pry bar in between the rim and the tire. Push the pry bar as far down as possible. This will require a large amount of force.
The bead is broken when the tire is visibly separated from the rim. Use the pry bar to hold the tire down by leveraging it against the small lip inside the rim.
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Locate the stem valve on the inside of the rim. It will be a large piece of rubber underneath the lip.
Use the diagonal cutters to cut off an appropriate amount of rubber from the under-side, as shown.
Remove the stem by pulling it through the face of the rim.
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Insert the new stem up through the rim. Use the diagonal cutters to help pull the stem into its seated position. There will be an audible pop when it is in correctly.
When using the diagonal cutters, take care not to pinch the stem too tight.
If you are having trouble seating the stem, use the rim as leverage.
Edit
The tire must be re-inflated. Simply use your air compressor to inflate the tire. We recommend re-inflating to 32 p.s.i. to check for leaks.
When inflating, the tire will produce a loud pop as the bead returns to its place. If the tire is having trouble inflating, squeeze the tire against the rim to create a seal.
Edit
Almost done!
If all goes well, your tire should be fully resealed and good as new.
Conclusion
If all goes well, your tire should be fully resealed and good as new.
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Tire valve stems are the valves located in a vehicle’s wheel where the tires are inflated from.
They contain a spring loaded valve core that seals itself using the air pressure inside of the tire. Over time valve stems may get old, crack, become brittle, or begin to leak, causing larger problems with your tire and your driving experience.
When valve stems begin to leak, the tire will no longer hold air. Depending on the severity of the leak, the tire may leak air slowly, or in more sever cases not hold air at all, warranting replacement of the valve stem.
In most cases the the fastest way to replace a valve stem is to take it to a tire shop and have them remove the tire and replace the valve stem using aid of a tire machine. However, for instances where this is not an option, a tire can be removed and the valve stem changed manually. In this step by step guide we will cover how to remove a tire from a wheel manually, using a tire iron, to replace the valve stem.
Materials Needed
Step 1: Loosen the lug nuts.
Loosen the lug nuts of the wheel from which the valve stem is going to be replaced.
Step 2: Raise the car on jack stands. Set the parking brake, and then raise the vehicle and secure it on jack stands.
Step 3: Remove the wheel. Once the vehicle is raised, remove the wheel and set it flat on the ground with the outside of the wheel facing up.
Step 4: Deflate the tire. Remove the cap from the valve stem, and then remove the valve stem core using the valve stem removal tool to release the air from the wheel.
Once the valve stem core is removed the tire should deflate on its own.
Step 5: Separate the tire’s bead from the wheel. Next, use the sledgehammer to break the tire’s bead free from the wheel.
Hit the sidewall of the tire using the sledgehammer in the same place until the bead breaks loose.
When the bead breaks loose you may hear a crack or popping sound, and you will see the inside lip of tire visibly separate from the lip of the wheel.
Once the bead has been broken, continue around the tire with the sledgehammer until the bead is completely broken all the way round the tire.
Step 6: Lift the lip of the tire up from the wheel. Once the tire’s bead has been broken, insert your tire iron between the edge of the rim and the inside lip of the tire, and then pry upward to pull the lip of the tire over the edge of the wheel.
Once you have pulled the lip of the tire over the edge of the wheel, work the tire iron around the rim until the entire lip of the tire is off the rim.
Step 7: Remove the tire. Grab the tire by its removed lip and pull it upward so that the opposite lip that was at the bottom of the wheel is now touching the top edge of the rim.
Insert the tire iron in between the the tire’s lip and the edge of the wheel and pry upwards to pull the lip over the edge of the rim.
Once the lip is over the edge of the rim, work the tire iron around the edge of the wheel until the tire is removed from the wheel.
Step 8: Remove the valve stem. Once the tire is removed from the wheel remove the valve stem. Use the needle nose pliers to pull the valve stem free from the wheel.
Step 9: Install the new valve stem. Take your replacement valve stem and install it from the inside of the wheel. Once it is in position use the needle nose pliers to pull it through into place.
Step 10: Reinstall the tire. Reinstall the tire onto the wheel by pressing it down over the the rim until the bottom bead clears the edge of the rim.
Then press the side of the tire down underneath the edge of the wheel, tuck your tire iron in between the lip of wheel and the bead, and then pry the bead over the lip the of the wheel.
Once the bead clears the lip of the wheel, work your way round the entire wheel until the the tire is completely installed on the wheel.
Step 11: Inflate the tire. Once the tire has been re-installed onto the wheel, turn on the air compressor and inflate the tire to the correct specification.
For most tires, the recommended pressure is between 32-35 pounds per square inch (psi).
Step 12: Check for leaks. Once the tire is properly inflated, double check to make sure that there are no leaks of any kind, and then reinstall the tire onto the vehicle and lower it off of the jack stands.
For most cases, the easiest course of action to replace a valve stem would be to simply take it to a tire shop, have the tire removed with a machine, and then have the valve replaced.
However, in the instances where that is not an option, a valve stem, and even a tire, can be removed and replaced manually with the correct tools and the correct procedure. If you find that there is a leak or damage in the tire and not just the valve stem, you may want to replace the tire entirely.
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The tire valve is the tip that inflates the tire and ensures it is sealed. It is attached either directly to the inner tube or to the wheel rim.
The tire valve is damaged while driving and must be replaced at the same time as the tires.
La d'un valve tire A car tire is a rubber tip that sits on the tire. The tire valve, fitted with a plastic cap, has two main functions:
The tire valve can be attached to the inner tube or to the rim, as is the case with tubeless tire valves. It comes in two varieties:
When the pressure is too low, a warning light comes on on the instrument panel. In short, the tire valve prevents air from escaping from the tire, but also prevents dirt from entering the tire. Hence, it also plays a protective role. Finally, it allows, in particular, to make tire pressure and then maintain this pressure by keeping the air inside.
One of the functions of a tire valve is to seal it by keeping air inside the tire. But over time and miles, it can get worse as it is subjected to the pressure and centrifugal force of rolling tires.
When damaged, the tire valve can cause Air leakage and pressure drop tire. The main cause of tire valve leakage is its age, and the mechanism it contains eventually fails.
The risk of tire valve failure is the slow release of air from the tire.
No matter how hard you apply pressure and re-inflate it, it will continue to lose air. However, driving with improperly inflated tires is dangerous: loss of traction, increased stopping distance, reduced tire life and risk of bursting.
Therefore, the valve in a leaking tire must be repaired or replaced. We also recommend replacing tire valves every time you change tires.
To change the tire valve, you must disassemble the wheel and separate the tire from the rim. You must use valve stem extractor to replace the latter. However, there are also CIP tire valve replacement tools, but these are often not compatible with electronic valves.
Material:
Finish loosening the wheel nuts and remove it. Lay it on the floor with the outer side up. Remove the tire valve cap, then remove the core with a valve stem remover. Let the tire go down.
After the tire is deflated, you must detach it from the rim. You can use a sledgehammer all over the tire. Then, using an iron, remove the tire from the rim by inserting it between the tire and the edge of the rim.
After separating the tire from the rim, you can remove the stem from the tire valve. Use pliers to remove the old valve and install the new one in its place. You can then put the tire back on the rim and inflate it to the pressure recommended by the manufacturer. Complete the wheel assembly and check the tire valve for leaks.
The price of a tire valve depends on the type of valve, its size and of course where you buy it.
You can easily find a new valve at a specialized automotive store or on the Internet. Just make sure you buy the right valve for your tires.
Calculate the price of just a few euros for a set of tire valves. To have your valves replaced by a professional mechanic, calculate between 10 and 15 € with a tire change.
Now you know everything about the tire valve! As you already understood, its role is not only to allow you to inflate your tires but also to protect them from water or dust that can penetrate them. The valve of the tire also ensures its tightness, so it must be changed periodically.
Describe what you are going to teach someone how to do it.
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First remove the cotter pin from the axle on which the tire is attached.
Then pull the nut off the axle.
The chain will still be on the sprocket. It can be easily rolled from the side of the sprocket.
The bolt has already been removed from the axle, so use a rubber mallet to knock the axle out of the wheel. Once the axle has gone far enough, you can pull it all the way out with your hands.
The wheel is now off. Now you have to remove the valve core from the tire using 1-4 and the keywords = valve + stem + puller | valve stem tool] and bleed all the air out. Use a 12mm wrench and remove the nuts from the valve stem and bead retainer. Which is another rimmed thing with a nut on it other than the valve stem.
Do not completely remove the nut from the bead retainer, just make sure it is as loose as possible.
After all the air is gone, you need to break the bead on both sides. Just press down to release the tire from the rim. Then spray soapy water between the rim and the tire on both sides. Then take an iron and squeeze it between the rim and the tire.
After jamming, use the lever from the rim to pull the tire up and out of the way.
Then take it and squeeze it between the rim and the tire. After jamming, use the lever from the rim to pull the tire up and out of the way.
Once you pull it, go 5 inches down the rim and use the same leverage idea. Once you get it out, take out the first spoon, slide it back 5 inches, and jam again. Repeat this step until one side of the tire comes off the rim.
If you are actually replacing the entire tire, repeat this to remove everything else from it. If not, pull the tube out of the slot you made by pulling half the tire.
Insert a new inner tube into the tire. thread the valve stem through the hole in the rim, then slide one of the nuts (not the snap-in) onto it. Add some air to the tube (the less you use the better for you.)
Now use the same lever method but put the tire back on (be very careful not to pinch the tube between the tire spoon and the rim).
Once the tire is back on the rim, add more air, this should push out the bead retainer.
