Table 2-2. Operator/Crew Preventive Maintenance Checks and Services (Contd).

TM 9-2320-386-10

Table 2-2. Operator/Crew Preventive Maintenance Checks and Services (Contd).

ITEM TO

NOT FULLY

ITEM

INTERVAL

CHECK/

PROCEDURE

MISSION

NO.

SERVICE

CAPABLE IF:

WARNING

Hearing protection is required

when maintaining vehicle with

engine running.

CAUTION

Before

Instru-

Operation

ments

If oil pressure reading is below

(Contd)

normal, or if temperature read-

ing is over 230F (110C), shut

down engine at once, or engine

may be damaged.

Start engine (para. 2-12) and check

Instruments do not

engine instruments on instrument panel

read within limits

for steady, normal readings as follows:

given.

a. Oil pressure gauge (7) 35-70 psi

a. Oil pressure reads

(241-483 kPa).

less than 35 psi

(241 kPa).

b. Speedometer (8) indicates vehicle

speed. Listen for unusual noises.

c. Tachometer (9) idle: 750-850 rpm.

d. Engine temperature gauge (10)

d. Temperature

160-230F (71-110C).

reads more than

230F (110C).

e. Transmission temperature

e. Temperature reads

gauge (11) 160-200F (71-93C).

more than 200F

(93C) when engine

is at normal operating

temperature.

f. With engine at idle speed (750-

f. Air buzzer and/or

850 rpm), listen for air buzzer and

indicator light will

watch air indicator light (12).

not come on below

65 psi (448 kPa), or

will not shut off above

65 psi (448 kPa).

Change 2

2-23