FREE A&P Reciprocating Engine Overhaul Questions and Answers

Question 1

During a major overhaul of a reciprocating engine, a crankshaft runout check is performed. What is the primary purpose of this inspection?

Accepted Answer

To ensure the crankshaft is straight and not bent or warped.

Answer

To measure the wear on the main bearing journals.

Answer

To verify the correct dynamic balance of the crankshaft.

Answer

To check for cracks in the propeller flange.

Question 2

A technician is reconditioning a set of cylinders during a top overhaul. The process of creating a specific cross-hatch pattern on the cylinder walls is known as:

Accepted Answer

Honing

Answer

Lapping

Answer

Glazing

Answer

Reaming

Question 3

Which of the following statements is true regarding the installation of piston rings on a piston during a reciprocating engine overhaul?

Accepted Answer

Ring gaps should be staggered around the piston to prevent excessive blow-by.

Answer

Ring gaps should always be aligned to minimize cylinder wear.

Answer

The oil control ring is typically installed last, after the compression rings.

Answer

All piston rings are symmetrical and can be installed in any direction.

Question 4

A mechanic is performing a major overhaul on a reciprocating engine. According to FAA guidelines and standard industry practice, what does this procedure entail?

Accepted Answer

Complete disassembly, inspection, repair as necessary, reassembly, and testing of the entire engine to specified limits.

Answer

Inspection and repair of cylinders and pistons only, without splitting the crankcase.

Answer

Replacement of all bearings and seals, with a visual inspection of other components.

Answer

A thorough cleaning and pressure test of the engine without disassembly.

Question 5

After reassembling a reciprocating engine, a technician must secure numerous fasteners, such as connecting rod bolts and crankcase through-bolts. What is the primary purpose of using safety wire on these critical fasteners?

Accepted Answer

To act as a positive locking device to prevent loosening from vibration.

Answer

To provide a secondary method of applying torque to the fastener.

Answer

To indicate if a fastener has been previously tampered with.

Answer

To ground the components electrically and prevent static buildup.

Question 6

When installing new piston rings, the technician notices a small dot or the word 'TOP' on the side of a compression ring. What is the significance of this marking?

Accepted Answer

It marks the side of the ring that must face the top of the piston.

Answer

It indicates the position where the ring gap should be placed.

Answer

It is a manufacturer's inspection stamp and has no installation significance.

Answer

It designates the ring as being for an intake-stroke compression cycle.