AM.III.J.S19

From the FAA library

• Aviation Maintenance Technician Handbook - Powerplantp. 6-36
  Chapter 6: Lubrication & Cooling Systems › Engine Cooling Systems › Engine Cylinder Cooling Fin Inspection

  Engine Cylinder Cooling Fin Inspection The cooling fins are of the utmost importance to the cooling system, since they provide a means of transferring the cylinder heat to the air. Their condition can mean the difference ... between adequate or inadequate cylinder cooling. The fins are inspected at each regular inspection. Fin area is the total area (both sides of the fin) exposed to the air. During the inspection, the fins should be examined for cracks…

• Aviation Maintenance Technician Handbook - Powerplantp. 6-34
  Chapter 6: Lubrication & Cooling Systems › Engine Cooling Systems › Reciprocating Engine Cooling System Maintenance

  cylinder fins. The decreased airflow cannot carry away as much heat; therefore, it has a tendency for the engine temperature to increase. Opening the cowl flaps makes the exit area larger. The flow of cooling air over the cylinders increases ... absorbing more heat and the engine temperature tends to decrease. Good inspection and maintenance in the care of the engine cooling system aids in overall efficient and economical engine operation…

• Aviation Maintenance Technician Handbook - Powerplantp. 6-36
  Chapter 6: Lubrication & Cooling Systems › Engine Cooling Systems › Cylinder Baffle & Deflector System Inspection

  adjacent fins, and one inch on any five adjacent fins. If the breakage length in adjacent fins exceeds this prescribed amount, the cylinder should be removed and replaced. These breakage specifications are applicable only to the engine used in this ... each specific case, applicable manufacturer’s instructions should be consulted. Cylinder Baffle & Deflector System Inspection Reciprocating engines use some type of intercylinder and cylinder head baffles to force the cooling air into close contact with all parts of the cylinders…