Technician A says the maximum amount of cylinder out-of-roundness allowed in most cases is 0.0015 in. (.038 mm). Technician B says that a cylinder can have a taper of up to 0.010 in. (.254 mm)and be acceptable. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because the maximum allowable cylinder out-of-roundness for most engines is indeed around 0.0015 inches (0.038 mm). Technician B's statement is incorrect because a cylinder taper of up to 0.010 inches (0.254 mm) is generally considered excessive and would likely require machining or replacement of the cylinder.

Technician a Says the Maximum Amount of Cylinder Out-Of-Roundness Allowed