Exam 11: Lower-End Theory and Service

Technician A says the distance across the outside parting surface of the bearing is slightly greater than the diameter of the housing bore, and this feature is called spread. Technician B says when a connecting bearing half is installed, the bearing edges extend slightly from the seat; this extension is called bearing crush. Who is correct?

Which of the following is NOT a type of camshaft drive mechanism?

Oil pressure is determined by whether the pump is a gear type or rotor type and by oil clearances, the pump's pressure regulator valve, and oil viscosity.

A typical oil pump pickup filter screen serves to keep microscopic contaminants from reaching the oil pump.

What is the major thrust face?

Pistons for modern engines are made of _____.

Describe how to use Plastigage.

What part of the block is the deck?

Combustion heat, engine oil, and piston movement combine to form a thin residue on the cylinder walls that is commonly called ____________________.

Technician A says a piston pin is sometimes called a wrist pin. Technician B says the piston pin is always centered in the piston. Who is correct?

Timing belts are only used on OHC engines.

When are undersized bearings used?

Which operation must be performed before removing the pistons from an engine?

Longer-duration camshafts improve low-speed power but weaken high engine speed performance.

What is the function of the crankshaft thrust bearing?

Nearly all OHV engines use a timing chain to drive the camshaft.

Technician A says that the pickup screen is rarely replaced when an engine is rebuilt. Technician B s says that when installing the pickup Tube, you should reuse the original gaskets and seals.. Who is correct?

What is the function of the flywheel?

Technician A says that the oil pump is driven directly by the crankshaft. Technician B says on some older engines the oil pump is driven by the distributor. Who is correct?

The maximum amount of cylinder taper normally allowed is: