TM 9-2320-280-10
Change 1
2-97
Item
No.
Interval
Crewmember
Procedure
Not Fully Mission
Capable If:
Table 2-2. Preventive Maintenance Checks and Services (Cont’d)
Location
Item to
Check/
Service
53
Weekly
Cooling
c. Check support mounts,
c. Support mounts
System
side brackets, and side bracket broken, damaged,
(Cont’d)
weldments on radiator for
or missing hardware.
missing hardware, damage,
Side brackets
or broken welds.
damaged or weld-
ments broken.
NOTE
Belt flutter at idle is
normal in the HMMWV
belt drive system. It does
not necessarily indicate
that the belts are loose.
Belt flutter should
disappear as the engine
is accelerated.
d. Check for loose, missing,
d. Any drivebelt is
broken, cracked, or frayed drive-
missing, broken,
belts (all models except “A2”
frayed or dry rotted.
and M1123 vehicles). Notify
Belt fiber has more
supervisor if loose drivebelts
than one crack 1/8-in.
are suspected.
(3.18 mm) in depth or
50% or frays more than
2 in. (5.1 cm) long.
e. For A2 and M1123 models,
e. Serpentine
check for looseness, misalignment, drivebelt is loose,
breaks, splits, or frayed
misaligned (off one or
serpentine belt.
more grooves on any
pulley), breaks or
splits in outer surface,
frays on either edge if
cord is broken.
f. Check fan shroud for
f. Fan shroud
damage.
broken, cracked, or
loose.
g. Check engine oil cooler and
g. Class III leak
hoses for damage and leaks.
evident.
SIDE BRACKET
WELDMENTS
