TM 55284025423
1108 ADJUST FUEL CONTROL (N1) (Continued)
1108
Adjustment of fuel selector (A1) is factory set
1.
for JP4 fuel. If fuel being used is JP5, JP8,
JET A, or JET A1; and the engine fails to ac
celerate with high PTIT during starting (hung
starts), the fuel selector (A1) may be adjusted
for the JP5 setting..
NOTE
If one of the alternate fuels are primatrily
used with occasional usage of JP4 fuel,
the fuel selector may be left in the JP5
setting.
a. If one of the alternate fuels are primarily used
with occasional usage of JP4 fuel, the fuel selector
may be left in the JP5 setting.
b. Lockwire (E29) fuel selector (A1).
NOTE
Perform an acceleration check after intial
adjustment of fuel selector setting from
JP4 to JP5 regardless of type of fuel
used.
WARNING
Adjusting the fuel selector setting
from JP4 to JP5 results in a lower
fuel schedule, thereby reducing com-
pressor stalls that are induced by rich
fuel schedules especially during start-
ing. However, lower fuel schedules
will result in longer acceleration times
during transients. It is essential that
acceleration times are in accordance
with the acceleration check to prevent
excessive N2/Rotor Droop.
INSPECT
GO TO NEXT PAGE
1528
Change 11
