TM 9-2350-247-20-1PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDINGLUBRICATION INSTRUCTIONS — Continued0128 00ITEMNO.INTERVALMAN-HOURITEM TO BECHECKED ORSERVICEDCREWMEMBERPROCEDUREEQUIPMENTNOT READY/AVAILABLEIF:71Semi-Annual(M548A1)Differential OilDraina. Differential oil every 150 hours, 1500 miles(2414 km), or semi-annually. Drain only whenhot after operation. To drain, remove front hullbottom access cover and drain cover(WP 0337 00). Inspect drain cover and oil formetallic particles. If metal chips are found,notify your supervisor.Any metalchips arepresent orClass III oilleaks arefound.b. Clean and install drain cover (WP 0383 00)Remove gauge rod from housing and add OE/HDO oil (approximately 18 quarts) (17 liters).Check oil level and install gauge rod.0128 00-82
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