Aviation Mechanic - General, Airframe, and Powerplant › III. Powerplant › Task A. Reciprocating Engines

AM.III.A.S5

Skill

Identify the parts of a crankshaft.

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Aviation Maintenance Technician Handbook - Powerplant p. 1-23
Chapter 1: Aircraft Engines › Propeller Shafts
identified by taper numbers. Splined and flanged shafts are identified by SAE numbers. The propeller shaft of most low power output engines is forged as part of the crankshaft. It is tapered, and a milled slot is provided so that…
Aviation Maintenance Technician Handbook - Powerplant p. G-19
Glossary
center of the crankshaft to move the pistons in and out of the cylinder. The amount of the offset determines the stroke of the engine. Oil analysis. A method of measuring the contents in parts per million of various chemical ... burned in an electric arc, and the resulting light is analyzed with a spectroscope which identifies the chemical elements in the oil and gives an indication of the amount of each element. This type of oil analysis is called…
Aviation Maintenance Technician Handbook - Powerplant p. 4-20
Chapter 4: Engine Ignition & Electrical Systems › Auxiliary Ignition Units › Impulse Coupling
normal timing position relative to the engine. The presence of an impulse coupling is identified by a sharp clicking noise as the crankshaft is turned at starter cranking speed past top center on each cylinder. A problem that can arise ... during adverse starting conditions. Even with these disadvantages, the impulse coupling is still in wide use. Figure 4-33. Parts of an impulse coupling. High-Tension Retard Breaker Vibrator To provide for more spark power during the starting cycle…