ARMY
TM 5-6115-612-34
MARINE CORPS TM 6115-34/8
AIR FORCE
TO 35C2-3-471-2
NAVY
AG-320B0-MME-000
13-8.
ENGINE OPERATIONAL TEST. (cont)
(11) An overspeed shutdown device f. Using
lubricating
oil
activated at 110 percent
(nominal)
MIL-L-23699, bring lube oil level to
engine speed.
full mark on dipstick. Record lube oil
temperature.
(12) A high exhaust temperature
shutdown device activated at 1225 +
25°F (662.8 ± -3.9°C).
g. During test, keep a record of all
data in accordance with table 13-1.
b.
The following engine components
shall be tested with, and remain as part
h.
Figures 13-2 through 13-5 show
of, the engine assembly:
acceptable limits of transient response,
exhaust gas
temperature, oil sump
(1) Starter.
temperature, and fuel flow limits.
(2) Low oil pressure switch.
i.
Normal operating conditions are
shown in
table 13-2.
Test cell
(3) Fuel
manifold
with
fuel
operating limits are shown in table
injection nozzles.
13-3.
The engine shall be shut down
immediately and corrective action taken
(4) High tension lead.
if any of those conditions or limits are
exceeded, or if any of the following
conditions are noted.
(5) Ignition coil.
(1) Oil leaks or fuel leaks in
(6) Spark igniter.
excess
of 10 drops /minute.
(7) Exhaust
gas
temperature
thermocouple.
(2) Engine
vibration amplitudes
exceed 0.3 mil at any rotor frequency
from O - 1500 Hz.
c. Install 10-micron filter as close
to engine fuel inlet as practical and
connect fuel supply. Fuel shall be in
(3) Oil pressure falls below 17
accordance with MIL-T-5624, Grade JP-4.
Fuel supply pressure, measured at the
psi (117 kPa) or exceeds 35 psi (241
kPa).
high pressure pump inlet, shall be 0
to 7 psig (0-48.26 kPa).
(4) Oil temperature exceeds 250°F
d.
Install test probes and vibration
(121.1 °C).
pickups in accordance with figure 13-1.
(5) Fuel flow or turbine exhaust
e. Measure
temperature exceeds normal limits.
rotor
and
gearbox
vibration with vibration pickup and
vibration meter.
Install one vibration
(6) Acceleration time from initia-
pickup on lifting lug. Rotor vibration
tion of cranking to rated speed is
must not exceed 0.3 mil.
longer than 30 seconds.
13-3
