TM-9-2320-279-20-1
M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)
TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; ORGANIZATIONAL MAINTENANCE, VOLUME 1 OF 3
TM-9-2320-279-20-1 - Page 56 of 985
TM 9-2320-279-20-1
Table 2-1.
Unit Level Preventive Maintenance Checks And Services
Item Interval
Item To Be
No.
Inspected
Procedure
Not Mission
Capable If:
4
Semi-
Fuel
c. Inspect fuel injection pump, nozzle
c. Rubber
Annual
System
lines, and fittings for leaks and dam-
cap
missing or tom on
age.
Continued
return line. Any
nozzle loose or dam-
aged.
d. Inspect all fuel lines for loose con-
nections, splits, cracks, and kinks that
could leak.
d. Any Class III
leak.
5
Semi-
Engine
a.
Check drive belts for cracking, fray-
a. Any drivebelt is
Annual
Accessory
ing and breaks.
missing or broken.
Drive Belt
Belt fiber has more
than one crack (1/8
inch in depth or 50%
of belt thickness) or
has frays more than
2 inches long.
b.
Check fan belt (paragraph 6-16) and
alternator belt (paragraph 6-14) for ad-
justment.
b. Belts
adjust-
ment is less than 70
lbs
(31 ON)
greater than 90 lbs
(400N).
6
Semi-
Cooling
Annual
System
WARNING
If vehicle has been operating, use ex-
treme care to avoid being burned when
removing cooling system radiator cap.
Use heavy rags or gloves to protect
hands. Turn radiator cap only one-half
turn counterclockwise and allow pres-
sure to be relieved before fully remov-
ing cap.
NOTE
Coolant level should be up to bottom of
filler neck (TM 9-2320-279-10).
Use MIL-A-46153 in temperatures above
0° F (-18° C) and MIL-A-11755 in tem-
peratures below 0° F (-18° C).
2-8
Change 2
Back to Top
