TM-9-2320-273-10

TRUCK, TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; OPERATOR’S MANUAL

DECEMBER 2012

TM-9-2320-273-10 - Page 107 of 452

Table 7. Control Panel Indicators

.

1

2

3

4

5

6

Figure 7. Control Panel Indicators.

Key

Control/Indicator

Function

1.

ENG OIL Indicator

This indicator illuminates red when engine oil pressure is

below 10 psi (69 kPa) for M915A1 or 5 psi (34 kPa) for

M915 through M920 vehicles, the minimum operating

limit.

2.

ENG TEMP Indicator This indicator illuminates red when engine coolant

temperature exceeds 220° F (104° C) for M915A1 or

225° F (107° C) for M915 through M920 vehicles, the

maximum operating limit.

3.

DIFF LOCK OUT

Indicator

This indicator illuminates red when the INTERAXLE

DIFFERENTIAL control is placed in the LOCK position

and inter-axle differentials are engaged. On M916–M920

the front driving axle is also locked.

4.

PTO Indicator (M916

through M920)

This red light comes on when the PTO control is

engaged.

5.

PARK BRAKE

Indicator

This indicator illuminates red when SYSTEM PARK

control knob is pulled out.

6.

HIGH BEAM

Indicator

The HIGH BEAM indicator illuminates blue when the

cab ﬂoor-mounted headlamp dimmer switch is depressed

for high beam operation.

TM 9-2320-273-10

0005

0005-9