If the engine stalls or falters in starting, wait three or four seconds before
re-engaging starter. This will prevent possible damage to starter or the engine.
DO NOT Operate the starter for periods longer than 15 seconds at a time. An
interval of at least two minutes should be allowed between cranking periods to
protect the starter from overheating.
(3)
Hold engine START-RUN-STOP switch (19) in START position.
(4)
Press and hold ENGINE START pushbutton (17). Release as soon as engine starts.
(5)
Release engine START-RUN-STOP switch (19) to RUN position when oil pressure builds up.
(6)
Observe engine RPM on the tachometer, and observe engine for excessive vibration. Idle speed
should be 1000 RPM + 50 RPM. If there is excessive vibration, adjust engine idle speed,
gradually increasing or decreasing it - whichever is necessary - until vibration is reduced. For idle
speed adjustment procedure, refer to Section 2-3, Para. 2,b, (4).
(7)
Allow engine to warm up before applying a load.
The engine’ s entire exhaust system will get very hot and cause severe burns if
touched.
d. Generator Operation
(1)
Place speed control switch
(13)
in RATED RPM
(up)
position. Engine speed will be 2000 RPM.
(2)
Press BUILD UP VOLTAGE pushbutton
(10)
. Generator will produce rated voltage.
(3)
Adjust STARTING CURRENT rheostat
(4)
if necessary.
(4)
Deliver Power
(5)
Connect output cable to AIRCRAFT.
(6)
Hold CONTACTOR switch
(11)
in CLOSE position. Release to ON position as soon as green
CONTACTOR CLOSED light
(12)
comes on.
(7)
Stop Operation Shutdown
(8)
Place CONTACTOR switch
(11)
in OFF position. Light
(12)
should go off to indicate load
contactor has opened and power is no longer available at the aircraft.
(9)
Place speed control switch
(13)
in IDLE (down) position. Allow engine to run for 2 to 3 minutes.
(10)
Disconnect output cable from aircraft receptacle and store cable in cable trays or on cable
hangers as the case may be.
(11)
Place START-RUN-STOP switch
(19)
in STOP position.
e. Adverse Weather Precautions
(1)
Cold weather operation
Operation of engine-driven units at sub-zero temperatures requires special precautions and extra
servicing from both operation and maintenance personnel if poor performance or total functional
failure is to be avoided. Consult Maintenance and Operator’s Manual and recommendations
below.
(2)
Fuel system
Keep system clean and free from water which may collect in a low spot in the fuel line and
freeze, plugging the line. Fuel tanks should be kept FULL to prevent water condensation from
the air above the fuel.
WARNING
CAUTION
OM-2063 / Operation and Maintenance Manual
Jet-Ex 4D / Spec. 7003A-3 and 7003B-3 / Generator Sets
Dec 31/92
Chapter 1-4
Page 3