TM 55-1510-215-10
14.
Fuel control unit
20.
Reduction gearbox housing
15.
Fuel control unit control rod
21.
Oil pressure tube
16.
Bleed air line
22.
Ignitor plug
17.
Fuel manifold
23.
Engine mount
18.
24.
Oil filter cover
19.
Power turbine governor
25.
Accessory gearbox housing
Figure 2-10. T74-CP-700 Engine (sheet 2 of 2)
annunciator panel (fig. 2-22) illuminates when the bleed
NOTE
air control valves are in the open position.
Propeller reversing can be used
below 40 knots, if required, with the
inlet
air
separators
operating.
CAUTION
Propeller blade erosion may result
but engine dust and foreign matter
ingestion will be minimized.
Monitor inlet turbine temperature
during ground roll with inlet air
2-23. Power Plant Ice Protection Systems.
separator ON and propellers in
reverse pitch. Do not allow ITT to
a. Inertial Separators.
An inertial separation
exceed engine limits. If excessive
system is built into each engine air inlet to prevent
ITT temperatures occur, reduce
moisture particles from entering the engine inlet plenum
power.
under freezing conditions. This is done by introducing a
sudden turn in the airstream to the engine, causing the
b. During the DESCENT-ARRIVAL check (chap.
moisture particles to continue on undeflected because of
8), the INLET AIR SEPARATOR switch may be placed
their greater momentum and to be discharged
to AUTO as required. Extend the inertial separator anti-
overboard. During normal operation, a movable vane is
ice vanes by pulling the ENG ICE VANE handles (fig.
raised out of the direct ram airstream. For cold weather
(+ 5C or below) operation in visible moisture, it should
INLET AIR SEPARATOR switch off, and reposition the
be lowered into the airstream. The anti-ice vanes are
engine ice vane handles as required.
2-16
