TM 9-2350-247-20-1PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDINGLUBRICATION INSTRUCTIONS — Continued0128 00ITEMNO.INTERVALMAN-HOURITEM TO BECHECKED ORSERVICEDCREWMEMBERPROCEDUREEQUIPMENTNOT READY/AVAILABLEIF:36Semi-AnnualFuel FiltersPrimary/Secondarya. Replace primary and secondary fuel filterelements (WP 0178 00 or WP 0179 00). Checkfor leaks.Any fuel leak.37Semi-AnnualAir Box HeaterAir Pumpa. Check operation of air box heater air pump (seeyour –10). Disconnect lead from fuel shutoffsolenoid valve. Have helper pull out fuel shutoffand intermittently crank engine and run airpump at same time for total of 20 seconds.Connect lead to fuel shutoff solenoid valve.Any fuel leak.0128 00-45
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