TM 55-2840-231-23
1-68. Engine Operating Procedures - Continued
LOCATION/lTEM
REMARKS
ACTION
TEST STAND/-
-Continued
Continued
l Indicated TOT exceeds 1380°F
(749°C) for more than 10 seconds
with a momentary peak of one second
at 1700°F (9270C).
l Indicated TOT exceeds 1700°F
(9270C) or remains at 1700°F
(9270C) for more than one second.
Simultaneously press
the start switch, ignition
switch, timer start switch.
Do not advance the N1 throttle
lever above the 0° position (fuel
cutoff) until the proper cranking
speed is attained. An overtemper-
ature start or an explosive Iightoff
may occur.
When N1 speed reaches
value listed below ad-
vance the N1 throttle
lever to 30-degree posi-
tion (idle). If there is
no immediate TOT indi-
cation, retard throttle
lever to O-degree posi-
tion (fuel cutoff).
Investigate to determine
the cause for no lightoff.
Ambient Temperature
N1 Speed
45°F to 130°F (7°C to 54°C)
15%
0°F to 44°F (-18°C to 7°C)
13%
-65°F to -1°F (-54°C to -18°C)
12%
At 58% N1 speed, release
start switch, and ignition
switch to cut off starter
and ignition.
Change 3
1-145
