4-55. GENERAL. The engine consists   of turbine, compressor, assemblies. The  gas ARMY TM  5-6115-612-12 MARINE  CORPS  TM  6115-12/7 AIR  FORCE TO 35C2-3-471-1 NAVY AG-320B0-0MM-000 Section XIII. MAINTENANCE  OF  ENGINE gas turbine the combustor, and gearbox turbine engine provides rotational-force at a constant speed to   drive   the   10kW   generator mounted on the front of the gearbox. In addition, the engine provides bleed air to the air filter. The engine is a single-shaft design with the compressor and turbine wheels mounted on a common shaft. Air  is  drawn  in  through  the compressor air inlet, compressed by the vanes of  the  compressor wheel, and distributed to the outer chamber of the combustor housing. The air then passes through holes in the combustor liner and through three fuel injection nozzles spaced evenly around the liner. Fuel is atomized in the fuel Injection nozzles,    mixed with the air, and injected into the combustor, where it   is ignited. The  burning fuel expands  rapidly  and  is  forced  through the  vanes  of  the  turbine  nozzle  and against the vanes of the turbine wheel causing the turbine wheel to rotate. Power produced by the rotating turbine wheel  is  transmitted  by  the  turbine shaft to the generator drive assemblies in the gearbox. NOTE If not specified in procedure, apply accordance with table 1-1, Specifications. 4-56. FOREIGN OBJECT SHIELD. Maintenance of object  deflection  shield is limited to replacement. maintenance torque  in T  o  r  q  u  e DEFLECTION the foreign (figure 4-35) a. Removal. WARNING To  prevent  injury,  ensure  that battery cable plug connector is disconnected from battery before performing  maintenance. (1) Disconnect battery cable plug connector  from  battery. (2) Loosen turnlock fasteners and remove  engine  housing  access  cover. (3) Disconnect electrical connector (1) from monopole speed sensor  (2). (4)  Remove  lockwire,  bolts  (3), and  washers  (4)  that  secure  foreign object deflection shield (5) and padeye (6) to compressor inlet housing (7). (5) Carefully lift foreign object deflection  shield     (5)     off     monopole speed sensor (2). b. Installation. (1)  Carefully slide foreign object deflection shield (5)  over monopole  speed  sensor  (2). (2) Aline mounting holes    in compressor inlet housing (7), padeye (6), and foreign  object  deflection shield  (5). Secure with washers (4) and. bolts (3). Torque to 50-70 inch pounds (5.6-7.9 Nm). (3) Connect electrical connector (1) to monopole speed sensor (2). 4-113