Aviation Mechanic - General, Airframe, and Powerplant › III. Powerplant › Task G. Engine Lubrication Systems

AM.III.G.S11

Skill

Troubleshoot an engine oil pressure malfunction.

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

Pilot's Handbook of Aeronautical Knowledge p. 7-16
Chapter 7: Aircraft Systems › Oil Systems
Oil Systems The engine oil system performs several important functions: • Lubrication of the engine’s moving parts • Cooling of the engine by reducing friction • Removing heat from the cylinders • Providing a seal between the cylinder walls and pistons • Carrying away ... contaminants Figure 7-17. Wet-sump oil system. Reciprocating engines use either a wet-sump or a dry-sump oil system. In a wet-sump system, the oil is located in a sump that is an integral part…
Aviation Maintenance Technician Handbook - Powerplant p. 8-12
Chapter 8: Engine Removal & Replacement › Preparation of Engine for Ground & Flight Testing › Pre-Oiling
Then, a line must be disconnected, or an opening made in the oil system at the nose of the engine, to allow oil to flow out of the engine. Oil flowing out of the engine indicates the completion ... oiling operation, since the oil has now passed through the entire system. Figure 8-12. Pre-oiler tank. In order to force oil from the pre-oiler tank through the engine, apply air pressure to the oil in the tank…
Aviation Maintenance Technician Handbook - Powerplant p. 6-4
Chapter 6: Lubrication & Cooling Systems › Reciprocating Engine Lubrication Systems › Combination Splash & Pressure Lubrication
Combination Splash & Pressure Lubrication The lubricating oil is distributed to the various moving parts of a typical internal combustion engine by one of the three following methods: pressure, splash, or a combination of pressure and splash. The pressure lubrication system ... principal method of lubricating aircraft engines. Splash lubrication may be used in addition to pressure lubrication on aircraft engines, but it is never used by itself; aircraft-engine lubrication systems are always either the pressure type or the combination pressure…
Aviation Maintenance Technician Handbook - Powerplant p. 6-20
Chapter 6: Lubrication & Cooling Systems › Turbine Engine Lubrication Systems
Turbine Engine Lubrication Systems Both wet- and dry-sump lubrication systems are used in gas turbine engines. Wet-sump engines store the lubricating oil in the engine proper, while dry-sump engines utilize an external tank mounted on the engine ... somewhere in the aircraft structure near the engine, similar to reciprocating piston engines mentioned earlier. Turbine engine’s oil systems can also be classified as a pressure relief system that maintains a somewhat constant pressure: the full flow type…