TM 9-2320-364-102-116 Table 2-4. Operators Preventive Maintenance Checksand Services (Weekly) - CONT.LocationItemNo.IntervalItem toCheck/ServiceProcedureNot Fully MissionCapable if:NOTEEngine panel must be open for item 78.78WeeklyAlternatorBelts(a) Check alternator belts (1) forcracking, fraying, and breaks.Check for tightness. Play shouldbe about 1/2 in. (13 mm).(b) Check pulleys (2) for cracksand damage. Close access panel.Any belt is brokenor cracked to thebelt fiber, has morethan one crack (1/8in. [3.2 mm] indepth or 50 percentof belt thickness) orhas frays more thantwo in. (51 mm)long. Any pulleyscracked or damaged.