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|  MIL-T-52843C
windshield wiper and heater controls, may be mounted on the cab
structure.
3.23.1 Charging system monitor. A remote indicating ammeter or
voltmeter, or alternator indicator red light shall be furnished. The
ammeter shall be of sufficient capacity to indicate variations in the
current supply or demand experien ed by the truck, exclusive of
c
starter requirements. The indicator light shall light when the
alternator is not charging and the engine run control is "on" and
shall be labeled "alternator" or with appropriate universal
symbology.
3.23.2 Engine oil pressure monitor A remote indicating engine oil
.
pressure gage shall be furnished. A low pressure red indicator light
or low pressure alarm shall be furnished in addition to the gage.
Means shall be provided to check operation of the light or alarm.
3.23.3 Engine coolant temperature monitor For liquid cooled
.
engines, remote indicating engine coolant temperature gage shall be
furnished and a high temperature red indicator light or alarm shall
be furnished in addition to the gage. Means shall be provided to
check operation of the light or alarm.
3.23.4 Transmission temperature monitor A remote indicating
.
torque converter or transmission temperature gage shall be furnished.
A high temperature red indicator light shall be furnished in addition
to the gage. Means shall be provided to check operation of the light.
3.23.5 Air pressure monitor. When a compressed air system is
furnished, an air pressure gage shall be furnished and an audible
alarm which exceeds operating noise levels by 20dB shall indicate
when air pressure is inadequate for proper brake operations.
3.23.6 Hourmeter. An hourmeter which registers the number of
engine operating hours up to a minimum of 9999 hours shall be
provided. The hourmeter shall be accessible for reading without
removing any component of the truck.
3.23.7 Fuel monitor. A fuel gage shall be provided.
3.23.8 Engine run control. An engine run control shall be
furnished and shall be a keyless type. It shall have not less than
two positions: "On" and "Off". The switch shall control the actuation
of all electrical monitors and electrical equipment except the horn.
3.23.9 Light switches. "On-off" light switches shall be furnished
on the instrument panel and each identified by labels. One switch
shall control the forward flood lamps and one switch shall control
the rear floodlamps as specified in 3.24.4. The forward and rear
flood lamps shall be inoperable when using the blackout lights. One
light switch conforming to MS51113 and clearly labeled as to specific
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