TM-9-2320-430-10

TRUCK, TRACTOR, 8X8, M983

TECHNICAL MANUAL; OPERATOR'S MANUAL

JUNE 2009

TM-9-2320-430-10 - Page 147 of 868

Table 1.

Instrument Panel Controls and Indicators. - Continued

Key

Control/

Indicator

Function

18

ENGINE

Switch (Three-

Position)

Straight up is OFF position. ON position operates electrical

system. Hold switch in START position to operate engine

cranking circuit. When switch is released after engine starts,

switch will return to ON position.

19

AIR Indicator

Illuminates (red) and remains lit until airbrake air pressure in

each section of dual system is between 60 psi (414 kPa) to

75 psi (517 kPa). Buzzer will sound anytime indicator is lit.

20

AIR PRESS

Gauge

Displays air pressure (in psi and kPa) in both sections of

airbrake system. Green needle shows front section air

pressure. Red needle shows rear section air pressure.

21

BATTERY

Gauge

Displays state of charge of batteries and alternator voltage

output.

22

AMPERES

Gauge

Displays alternator output in Amperes.

23

TRAILER AIR

SUPPLY

Control

Supplies air to (push in) and shuts off (pull out) air to trailer

brake system. When TRAILER AIR SUPPLY control is

applied (pushed in), vehicle PARKING BRAKE control

activates/deactivates the trailer parking brakes in concert with

the vehicle.

24

LHS NO

TRANSIT

Indicator

(M1120 only)

Illuminates (red) when LHS system is not properly stowed in

transport position.

TM 9-2320-430-10

0020

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