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 218 of 773

TM9-2320-279-10-1

Table 2-7. Preventive Maintenance Checks and Services Auxiliary Equipment

Item

No.

156

Monthly

Interval

Location

Item to

Check/

Service

Arctic

Heater

Continued

Crewmember

Procedure

DRIVER

c. Check coolant pump and

water jacket for security of

mounting and obvious dam-

age.

d. Check coolant pump for

unusual noise.

e. Check coolant hoses for

leaks, cuts, loose clamps and

other obvious damage.

f.

Check valve for leaks.

g. Check heater exhaust

pipe at water jacket for loose

clamp.

Not Fully Mission

Capable If:

Any Class III coolant

leakage.

WATER JACKET

Change 5

2-142.13