Table 2-1. Unit Level Preventive Maintenance Checks and Services HMMWV (Cont’d).
ITEM
NO.
INTERVAL
ITEM TO BE
INSPECTED
PROCEDURES
d. Inspect all fuel lines for loose
d. Any class III leak.
connections, splits, cracks, and bends
that could leak.
e. Disconnect the leads from each
e. Continuity is not
glow plug (para. 3-39) and check
present.
for continuity between glow plug
terminal and ground. Continuity
should be present.
f. Check each glow plug for looseness
f. Glow plugs are loose
and damage. Tighten each plug to
or damaged.
8-12 lb-ft (11-16 N•m).
4
Semi-
Engine
Check for missing, broken, cracked,
Serpentine drivebelt
annually
Accessory
or frayed serpentine drivebelt.
is missing or broken.
Drivebelt
Belt fiber has more than
one crack 1/8 in. (3.2 mm)
in depth, or 50% of belt
thickness, or has frays
more than 2 in.
(5 cm) long.
TM 9-2320-387-24-1
Change 1
2-7
NOT FULLY MISSION
CAPABLE IF:
FUEL/WATER
SEPARATOR
3
Semi-
Fuel
a. Inspect fuel filter/water separator
a. Any class III fuel
annually
System
assembly for dents and cracks that
leak.
could cause leaks.
b. Inspect fuel injection pump, nozzle
b. Any class III leak.
lines, and fittings for leaks and
Any nozzle loose or
damage.
damaged.
c. Inspect rear fuel injector nozzle
c. Rubber cap missing
rubber cap for presence and condition.
or damaged.
