Technician A says that a valve spring's pressure may be 10% less than the manufacturer's specifications before it must be replaced. Technician B says that valve seating pressure is the amount of force that the valve spring exerts on the area of contact between the valve face and seat. Who is right?

Question

Quizplus · Accepted Answer

Technician A is correct because a valve spring can be up to 10% below the manufacturer's specifications before needing replacement. Technician B is correct because valve seating pressure refers to the force exerted by the valve spring on the valve face and seat.

Technician a Says That a Valve Spring's Pressure May Be