Key to Instrument Cluster (Cont) - TM-9-2320-273-100056

TM 9-2320-273-10

KEY TO INSTRUMENT CLUSTER (Continued)

TRANSMISSION OIL TEMPERATURE GAGE

If temperature goes above 220F, stop the truck and

notify Organizational Maintenance of the problem.

Registers transmission oil temperature in degrees

Fahrenheit. Normal operating range is 40F to

220F.

ENGINE OIL PRESSURE GAGE

At 1700-2100 rpm, the minimum engine oil pressure

for safe operation is 30 psi. If, in this rpm range, the

gage does not show at least 30 psi, stop the engine

immediately and investigate the cause.

Registers engine oil pressure in pounds per square inch

(psi). (Normal range at rated speed (2100 rpm) is

40-75 psi. Range at idle speed is 5-20 psi).

AIR PRESSURE GAGE

Pressures below the normal operating range indicate

a loss in air supply. This will result in a limited

number of times the brakes can be applied before

losing front wheel brakes.

At the first sign of pressure loss, STOP THE

TRUCK AND INVESTIGATE THE CAUSE.

Registers air pressure (in psi) in the front brake system.

Normal operating range is 105-120 psi.

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