BASIC DRIVING GUIDELINES - TM-9-2320-273-100120

TM 9-2320-273-10

BASIC DRIVING GUIDELINES

AVOID UNNECESSARY ENGINE IDLING

During long engine idling periods, the engine coolant temperature will fall below the

normal operating range. The incomplete combustion of fuel in a cold engine will

cause crankcase dilution, formation of lacquer or gummy deposits on the valves,

pistons, and rings, and rapid accumulation of sludge in the engine. When prolonged

engine idling is absolutely necessary, maintain at least 800 rpm.

FREQUENTLY CHECK GAGES AND INDICATORS

During normal driving conditions, at engine rpm range from 1800-2100 rpm, engine

oil pressure should be in a range from 40-75 psi.

Engine water temperature should be above 140F at the low end and up to 200F

at the high end (normal water temperature should be from 165 F to 195F). The

air pressure gage should register at least 80 psi. (The low air pressure warning light

and buzzer come on at about 70 psi.)

ENGINE WATER

AIR PRESSURE

TEMPERATURE

GAGE-FRONT

GAGE-REAR