TM 1-2840-252-23-3
B-4 FUNCTIONAL GROUPS (COLUMNS 1 AND 2)
The functional groupings shown in the sample below identify maintenance significant components, assemblies,
subassemblies, and modules with the next higher assembly.
GROUP
GROUP
NUMBER
DESCRIPTION
NUMBER
DESCRIPTION
04
0406
FUEL SYSTEM
0401
ENGINE GENERAL
Hydromechanical assembly, fuel
boost pump, governors, fuel filter
Servicing, handling, inspection
assembly, sequence valve, fuel
requirements, lubrication charts,
manifold, fuel nozzle, external lines
overhaul and retirement schedules,
and hoses.
External lines & hoses. (As applica-
0407
ble)
ELECTRICAL SYSTEM
0402
COMPRESSOR SECTION
Electrical control units, exciters,
(COLD SECTION MODULE)
thermocouples, ignition harness,
electrical cables, history record,
Rotor, blades, vanes, impeller, Sta-
torque overspeed sensor, NP sen-
tors, inlet guide vanes, main frame,
sor, alternate stator, and blowers.
particle separator, bleed valve,
0408
bearings, seals, external lines &
OIL SYSTEM
hoses.
0403
Tanks, oil filter, oil cooler, lube and
COMBUSTION SECTION
scavenge pumps, oil filter bypass
(HOT SECTION MODULE)
sensor, external lines and hoses.
0409
Liners, nozzles, stators, rotor,
DRIVE SYSTEM
seals, couplings, blades.
0404
Reduction gear assembly, output
POWER-TURBINE (POWER
shaft, seal, and bearing.
TURBINE MODULE)
0410
MISCELLANEOUS EQUIPMENT
Nozzles, rotors, blades, exit guide
vanes, exhaust frame, drive shaft,
(As applicable)
bearings, seals, external lines and
hoses.
0405
ACCESSORY GEAR SECTION
Input/and output gears, seals, chip
detector, housings, drive shaft,
bearings, and seals.
B-5
