TM 9-2350-277-20-2PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDINGLUBRICATION INSTRUCTIONS — Continued0155 00ITEMNO.INTERVALMAN-HOURITEM TO BECHECKED ORSERVICEDCREWMEMBERPROCEDUREEQUIPMENTNOT READY/AVAILABLEIF:e. If transmission has been filled with preservationoil (MIL-L-21260, Grade PE 10-1), leave thisoil in transmission until first scheduled oilchange. Maintain operating oil level by addingapplicable grade oil (OE/HDO or OEA). Whenfirst scheduled oil change is made, refilltransmission with applicable oil (OE/HDOor OEA).Replace filter element (WP 0398 00) each time atransmission oil change is required.Use the following procedure when changing oilgrade or when oil is contaminated.NOTETransmission oil must be flushed whenchanging oil grade or when oil iscontaminated.1) Operate carrier until coolant reaches normaloperating temperature.NOTEDo not change transmission oil filter at thistime.2) Drain transmission oil.3) Fill transmission with new grade oil.4) Operate transmission in 1-3 range withengine idling for 5-6 minutes.5) Drain oil and change transmission oil filter.6) Fill transmission with new grade oil.7) Check oil level.0155 00-51
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