A cylinder head is being reassembled after having the face and seat resurfaced. Technician A says that this will increase the valve stem height. Technician B says that a shim within the size recommendation of the manufacturer may be installed under the spring to correct for this. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Resurfacing the face and seat of a cylinder head reduces the material, effectively increasing the distance between the valve stem and its corresponding components, thus increasing the valve stem height. Installing a shim under the spring, as per the manufacturer's recommendation, can compensate for this increased distance, ensuring proper valve operation.

A Cylinder Head Is Being Reassembled After Having the Face