valve guides are present in the engine cylinder head.these valve guide operates the working of valves in the cylinder.that is the inlet ant the outlet valves.
You can check the valve clearance with a valve clearance guide. Slide the guide between the valve. The guide will register the clearance.
Valve stem seals help prevent oil from leaking into the combustion chamber through the valve guides. They also help control the lubrication of the valve stems and guide them properly within the cylinder head.
The valve guide is a precise hole in the head that the valve stem slides in. The valve is retained by the retainer and two valve locks.
pulmanary valve is ppoop
is the starting valve
it is the valve which reduce the pressure.
Replace the valve seal and check the valve guide for wear.
A valve guide keeps the valve straight. Valve keepers keep the valve secured.
Valve guide bore can be measured using a bore gauge. The bore gauge is inserted into the valve guide, and the measurement is taken by expanding the gauge until it makes contact with the inner walls of the guide. The bore diameter can then be read directly from the gauge.
The purpse of valve lifters is exactly what it says, to lift the valve.
The function of steam stop valve to supply steam to steam maniform and the function safety valve to prevent the steam high pressure over.
An engine valve normally needs to be removed from the head for a valve job, or to replace other parts related to its operation like the spring or valve guide. This is normally done when the engine has a poor seal from the valve/valve seat or oil consumption caused by the vavle guide.