TM 55284025423
1109 ADJUST FUEL CONTROL (N2) (Continued)
1109
1. Adjust power turbine (N2) speed in accor
dance with the applicable airframe manual.
NOTE
The fuel control has two adjustable speed
settings to govern the power turbine max-
imum and minimum speeds.
CAUTION
The maximum speed adjustment shall
not be adjusted to allow pointer to in-
dicate a setting greater than 80 de-
grees on fuel control part numbers
other than 216162064 and
216162068. The pointer shall not
indicate a setting more than 86 de-
grees on P/N 216162064 or
216162068 fuel controls on en-
gines not installed in aircraft. The
pointer shall not indicate a setting
more than 76 degrees on engines
installed in aircraft with the N2 high
speed stop, P/N 145PO1533,
installed. See TM 551520240233,
task 4137, paragraph 2 for high
speed stop installation. The high
speed stop must be installed for cor-
rect engine throttle to aircraft rigging.
NOTE
When using speed settings, two degrees
travel of power turbine speed selector le-
ver results in power turbine speed change
of approximately one percent.
a. To increase power turbine maximum speed,
remove lockwire, loosen jam nut (1) and turn
adjustment screw (2) counterclockwise.
Tighten jam nut (1). Lockwire jam nut (1). Use
lockwire (E29).
b. To decrease power turbine maximum speed,
remove lockwire, loosen jam nut (1), and turn
adjustment screw (2) clockwise. Tighten jam
nut (1). Lockwire jam nut (1). Use lockwire
(E29).
GO TO NEXT PAGE
Change 11
