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 103 of 452
Table 3. Instrument Cluster, Gauges, and Indicator - Continued.
Key
Control/Indicator
Function
2.
LOW AIR
PRESSURE Indicator
WARNING
If low pressure warning lamp illuminates and buzzer
sounds while driving tractor, stop immediately and
investigate the cause. Failure to comply may result
in damage to equipment and possible injury or death
to personnel. Seek medical attention in the event of
an injury.
This indicator illuminates red when either the front or
rear air system pressure is between 64–76 psi
(441–524 kPa) and below. The low air pressure buzzer
will sound at the same time the LOW AIR
PRESSURE indicator comes on.
3.
REAR AIR PSI
Gauge
WARNING
Operating tractor with air pressure below the normal
operating range indicates a loss in air supply and
will limit the number of times the brakes can be
applied before the forward-rear axle emergency
park/spring brakes are automatically activated.
Failure to stop tractor and allow air pressure to
build up may result in damage to equipment and
possible injury or death to personnel. Seek medical
attention in the event of an injury.
This gauge registers the amount of air pressure in the
rear brake system. Normal operating range is
105–140 psi (724–965 kPa) for M915A1 or
105–120 psi (724–827 kPa) for M915 through M920
vehicles.
4.
Engine Coolant
Temperature
Gauge
CAUTION
Do not operate vehicle if coolant temperature rises
above 220° F (104° C) or engine overheating will
occur. Shut down engine and do not start until
coolant temperature is in normal range. If problem
persists, notify Field Maintenance. Failure to
comply may result in damage to equipment.
The TEMP gauge (M915A1) or WATER gauge (M915
through M920) indicates engine coolant temperature in
degrees Fahrenheit and Centigrade. The normal
operating range is 180–200° F (82–93° C) for M915A1
and 165–195° F (74–91° C) for M915 through M920
vehicles.
TM 9-2320-273-10
0005
0005-5
Back to Top
