TM-9-2320-279-10-1

M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)

OPERATOR’S MANUAL VOLUME 1 OF 2

DECEMBER 1998

CHANGE 5

TM-9-2320-279-10-1 - Page 102 of 773

TM 9-2320-279-10-1

Table 2-1. Preventive Maintenance Checks and Services for Models M977 thru M985E1

Location

Item Interval

item to

Crewmember

No.

Check/

Procedure

Not Fully Mission

Capable If:

Service

DRIVER

13 Before

Instru-

f. Air Pressure Gage. AIR

ments

PRESS gage indicates sys-

f. Gage indication

for either section is

tern air pressure in both front

Continued

and rear sections. Low air

less than 60 psi (414

kPa) or low air pres-

pressure is below 60 psi (414

sure

indicator re-

kPa) to 75 psi (517 kPa) in ei-

mains on or does not

ther section.

operate, or warning

Buzzer for air pressure gage will

buzzer remains on or

sound anytime indicator is

does not operate.

lighted. Ensure buzzer goes off

at 60 to 75 psi.

g. Battery Gage. Battery

gage indicates voltage output

g. Gage indication is

below 24 or above 28

(24 to 28 Vdc).

Vdc.

h. Amperes Gage. Am-

h. Gage indicates

peres gage indicates alterna-

tor output. Should show posi-

negative reading.

tive reading.

NOTE

Automatic transmission may not

reach 160º F (71° C) oil temper-

ature at idle for several minutes.

2-44

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