AM.III.H.S12
SkillIdentify the correct spark plugs used for replacement installation.
From the FAA library
- Chapter 4: Engine Ignition & Electrical Systems › Turbine Engine Ignition Systems › Igniter Plugs
Igniter Plugs The igniter plug of a turbine engine ignition system differs considerably from the spark plug of a reciprocating engine ignition system. [Figure 4-75] Its electrode must be capable of withstanding a current of much higher energy than ... electrode of a conventional spark plug. This high energy current can quickly cause electrode erosion, but the short periods of operation minimize this aspect of igniter maintenance. The electrode gap of the typical igniter plug is designed much larger than…
- Chapter 4: Engine Ignition & Electrical Systems › Removal, Maintenance, & Installation of Ignition System Components › Igniter Plugs
Igniter Plugs 1. Disconnect ignition leads from igniter plugs. A good procedure to perform before disconnecting the ignition lead is to disconnect the low-voltage primary lead from the ignition exciter unit and wait at least one minute to permit ... dissipate before disconnecting the high-voltage cable from the igniter. Figure 4-78. Flashover inspection. 2. Remove igniter plugs from mounts. 3. Inspect igniter plug gap surface material. Before inspection, remove residue from the shell exterior using a dry cloth…
- Chapter 4: Engine Ignition & Electrical Systems › Spark Plug Inspection & Maintenance › Spark Plug Lead Installation
core insulator is opened, creating a loss of gas tightness or damage to the core insulator. After a spark plug has been seated with the fingers, use a torque wrench and tighten to the specified torque. [Figure 4-64] Figure ... Wire gap gauge. Spark Plug Lead Installation Before installing the spark plug lead, carefully wipe the terminal sleeve and the integral seal with a cloth moistened with acetone or an approved solvent. After the plug lead is cleaned, inspect…