TM 5-3820-256-10
Figure 2-14 . Rig Truck
CONTROL or
KEY
INDICATOR
FUNCTION
1
Engine air restriction
Indicates condition of engine air cleaner filter.
gage
Restriction limit is 25 in. of water vacuum.
2
Hourmeter
Indicates cumulative hours of engine operation.
3
Air horn
Lanyard controls air horn. Pull to sound.
4
Windshield wiper/washer
Controls operation of windshield wipers and
controls
washers. Left knob controls left-side wind-
shield; right knob controls right-side wind-
shield. Turn CW one position for slow; second
position for fast. Push for washer.
5
Voltmeter
Indicates voltage in battery/generator system.
6
Oil pressure gage
Indicates pressure in engine lubricating system.
Range is 25 to 30 psi.
7
Water temperature gage
Indicates temperature of engine coolant system.
Range is 160 to 210 deq. F.
8
Turn signal indicator
Flasher indicates operation of left or right turn
signal.
9
Oil pressure/water tempera-
Illuminates at low oil pressure or high coolant
ture indicator
temperature.
10
High beam indicator
Illuminates when headlights are operated at
high beam.
2-12
n. Truck
