Exam 11: Lower-End Theory and Service

When installing an oil pump in an engine: Technician A packs the pump with petroleum jelly. Technician B submerges the pump in clean oil and rotates the pump shaft to fill the pump body. Who is correct?

Technician A says piston ring grooves should be cleaned with a groove cleaner. Technician B says piston ring grooves should be cleaned with a broken piston ring. Who is correct?

____________________ is the difference in diameter between the bottom of the cylinder bore and the top of the bore just below the ridge.

Technician A says engine blocks are made from iron. Technician B says engine blocks are made from aluminum. Who is correct?

A main or rod bearing insert that is an oversize bearing is thicker than the original bearing.