AM.III.I.K16

From the FAA library

• Aviation Maintenance Technician Handbook - Powerplantp. 2-46
  Chapter 2: Engine Fuel & Fuel Metering Systems › Engine Fuel System Components › Combustion Drain Valves

  Combustion Drain Valves The drain valves are units used for draining fuel from the various components of the engine where accumulated fuel is most likely to present operating problems. The possibility of combustion chamber accumulation with the resultant fire hazard ... residual problem is leaving gum deposits, after evaporation, in such places as fuel manifolds and fuel nozzles. In some instances, the fuel manifolds are drained by an individual unit known as a drip or dump valve. This type of valve…

• Aviation Maintenance Technician Handbook - Powerplantp. 2-35
  Chapter 2: Engine Fuel & Fuel Metering Systems › Turbine Engine Fuel System—General Requirements › Hydromechanical/Electronic Fuel Control

  engine fuel nozzles when the manual valve is closed. 4. The flow divider and drain valve assembly proportions fuel to the engine primary and secondary fuel nozzles. It drains the nozzles and manifolds at engine shutdown. It also incorporates…

• Aviation Maintenance Technician Handbook - Airframep. 14-51
  Chapter 14: Aircraft Fuel Systems › Checking for Fuel System Contaminants › Foreign Fuel Contamination

  engine has been started or attempted to be started, the procedure is more in depth. The entire fuel system, including all fuel lines, components, metering device(s) and tanks, must be drained and flushed ... correct fuel, a full engine run-up check should be performed before releasing the aircraft for flight. Figure 14-95. Clay filter elements remove surfactants. They are used in the fuel dispensing system before fuel…