TM 5-4320-300-14Table 4-1 Organizational Preventive Maintenance Checks and Services - ContinuedW -WeeklyQ- QuarterlyM -MonthlyS- SemiannuallyIntervalItemItemTo BeNo. W M Q SInspected ProceduresStart engine and allow it to warm up. While engine is warm-ing up, make an alinement mark on the governor body andcap. Loosen the adjusting lock screws on the governor capjust enough to allow the cap to be rotated either direction.Raise the engine speed with the throttle control to themaximum rpm allowed by the mechanical governor.Care-fully and slowly rotate clockwise the cap of the overspeedgovernor. When the lowering trip speed of the governormatches the actual engine speed, the overspeed governor willshut down the engine.If the overspeed governor does not shut down the enginewhen it is rotated fully clockwise, the mechanical governorwill have to be adjusted in order to increase the enginespeed.Release the jam nut, mark the position of the maximumspeed adjusting screw, and turn the adjusting screw to in-crease the engine speed.If the overspeed governor does nottrip after raising engine speed with maximum speed adjustingscrew, notify direct support maintenance.Return the maximum speed adjusting screw to its originalposition and tighten jam nut. Return overspeed governor capto original marked position and tighten the adjusting lockscrews.4-17
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