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 99 of 773

TM 9-2320-279-10-1

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

Location

Item Interval

No.

Item to

Crewmember

Not Fully Mission

Check/

Procedure

Capable if:

Service

DRIVER

12 Before

Fire Extin-

b. Check gage for proper

guisher

pressure of about 150 psi

b. Pressure gage

needle

in

RE-

(1 034 kPa). Make sure

CHARGE area.

Continued

mounting is secure.

c. Check for damaged or

c. Seal broken or

missing seal.

missing.

13 Before

Instru-

a. Start engine.

a. Engine will not

ments

start.

b. Tachometer. Check for

b. Tachometer indi-

damage, operation and con-

cates less than 600

dition. Correct idle is 625 to

rpm or more than 600

725 rpm.

rpm.

Change 5

2-41