Get a mechanic to do it. You obviously have no idea as to the complexity of the task. e.g valve stem seals, valve seats, warped head tolerances etc.
To replace rubber valve stems, first, ensure the tire is deflated and safely removed from the wheel. Use a valve core removal tool to take out the old valve stem from the wheel rim. Clean the area around the valve hole, then insert the new rubber valve stem and push it through until it seats properly. Finally, reinsert the valve core, inflate the tire to the recommended pressure, and check for leaks.
Valve seats can be categorized into several types based on their design and application. Common types include integral seats, which are part of the valve body, and replaceable seats, which can be individually replaced when worn. Other categories include screwed-in seats for easy replacement and soft seats made from materials like elastomers for better sealing at lower pressures. Additionally, seats can be classified by the type of valve, such as gate, globe, or ball valves, each requiring specific seat designs for optimal performance.
The valve springs.
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how do you replace the expansion valve
Pull the engine. Remove the heads. Take the heads and money to a machinist because he needs to refinish the valve seats. He can also test your heads for cracks, and if he finds any you need to replace the head.
It is normal to replace them.It is normal to replace them.
You need to replace the valve, which will require removing the head. While there, make sure that the valve seats are undamaged, and since it is apart, you are better off replacing all the valves, as well as the valve stem seals. Check the price of valves, as they can get expensive, but most of your cost will be labor.
How do you replace evpansion valve on 99 gs 300
To replace a presta valve on a bike tire, first remove the valve cap and unscrew the lock nut. Push the valve through the rim and pull it out. Insert the new valve into the hole and secure it with the lock nut. Inflate the tire and replace the valve cap.
This is a procedure done to restore the valves and valve seats. This is done typically when having a head(s) reconditioned.