Introduction The valve stem seals keep the valve stem lubricated as it slides within the valve guide. Low oil levels cause stems and guides to wear out. Increased oil consumption can lead to carbon buildup, causing valve seat damage and an early valve grind. Oil consumption may also be affected by defective valve stem seals. Engine valve stem seal Parts structure of valve group 1. The composition of the valve group Valve composition 9-Valve lock clip 10-Valve spring retrieve 11-Valve spring 12-Valve stem seal 13-Valve guide 2. Valve Material Medium carbon alloy steel for intake valve, heat-resistant alloy steel for exhaust valve Intake valve 300℃—400℃ Exhaust valve 780℃—980℃ Some engine exhaust valve stems are filled with liquid sodium, and alloys are surfacing on the sealing cone and tail to prevent wear and tear. Valve material Manufacturing Valve The valve is div...
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