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 174 of 452

BASIC DRIVING GUIDELINES

WARNING

Due to increased weight and raised center of gravity on

vehicles equipped with Crew Protection Kit, vehicle operator

must be aware of differences in driving characteristics and

adjust driving accordingly. Failure to comply may result in

damage to equipment or possible injury or death to

personnel. Seek medical attention in the event of an injury.

NOTE

During long idling periods, engine coolant temperature will

fall below normal range. The incomplete combination of

fuel in a cold engine will cause dilution of crankcase oil,

formation of carbon on valves, pistons, and rings, and

sludge build-up in engine. If prolonged engine idling is

necessary, maintain at least 800 rpm.

1. Avoid unnecessary engine idling.

NOTE

If gauges or indicators show any abnormal conditions, bring

tractor to a safe stop, shut down engine, and investigate

cause of problem.

2. Frequently check oil pressure gauge (Figure 6, Item 1). During normal driving

conditions with engine running 1,800–2,100 rpm, engine oil pressure gauge

(Figure 6, Item 1) should register 40–75 psi (276–517 kPa) for M915 through

M920 or 35–50 psi (241–345 kPa) for M915A1.

Figure 6. Oil Pressure Gauge.

1

M915 THROUGH M920

M915A1

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