Technician A says that the amount of taper a cylinder bore has can be determined using a piston ring and a feeler gauge. Technician B says that the greatest cylinder bore out-of-round wear will occur at the wrist pin ends of the piston. Who is right?
A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because the amount of taper in a cylinder bore can be measured by placing a piston ring in the cylinder and using a feeler gauge to measure the gap between the ring and cylinder wall at different points. Technician B is incorrect because the wrist pin ends of the piston do not typically experience the greatest amount of wear. The highest wear usually occurs at the top of the piston where combustion takes place, and the bottom of the cylinder where the piston changes direction.

Technician a Says That the Amount of Taper a Cylinder