TM-9-2320-280-10 HMMWV Operator Manual Download
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TM 9-2320-280-10 Change 1 2-97 Item No. Interval Cr ewmember 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