TM 9-4940-549-14&P
OPERATING
INSTRUCTIONS
NOTE
If equipment fails to operate, refer to trouble-
shooting procedures in chapter 3.
Section I. PERATING PROCEDURES
GENERAL. This section describes the various controls and instruments
and provides the operator or crew sufficient information required to
operate the shop set.
CONTROLS AND INSTRUMENTS. The purpose of the controls and instruments
and the normal and maximum readings of the instruments are listed in the
following subparagraphs and illustrated in the figures, cited by the ap-
plicable subparagraphs,
Hydraulic Systems. The two hydraulic systems that raise and lower
a.
the top doors are each operated by a manually operated hydraulic
the pump to operate the pump. Turn the control valve clockwise to
raise the doors and counterclockwise to lower the doors.
Instrument Panel Lights. The instrument panel lights shown in fig-
b.
ure 22 are turned on with the battery switch shown in figure 22.
Tachometer.
The tachometer indicates the engine speeds. Normal
c.
engine speed should be 1,800 rpm to develop 60-hertz current.
The tachometer also serves as an hour-meter to show the hours that
the engine has run.
Engine Starter Ignition Switch (Key lock). The switch is a three
d.
position switch, OFF, ON and START. The battery witch must be
ON to energize- switch. Turn key to START position,fter engine
starts release key and it will return to the ON position.
Battery Switch. The battery switch (fig. 2-2) is used to open the
e.
24-volt DC circuit between the battery and all 24-volt controls and
instruments to prevent the drainage of DC current from the battery
when the end item is not in use. All 24-volt controls, instruments,
or engine safety devices will not function if the battery switch is
OFF.
Throttle Control. The throttle control (fig. 2-2) is used to adjust
f.
the engine speed to any desired rpm, from idle to 1,800 rpm. Turn
the handle counterclockwise and pull out to increase and push in to
decrease engine rpm; then, turn handle clockwise until the throttle
is locked in position, Reduce the engine rpm to idle speed before
stopping engine.
