TM-9-2350-261-20-1 Unit Maintenance Manual Volume 1 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-20-1 PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING LUBRICATION INSTRUCTIONS — Continued 0120 00 ITEM NO. INTERVAL MAN- HOUR ITEM TO BE CHECKED OR SERVICED CREWMEMBER PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: 72 Semi-annual 0.4 Fan Gearbox a. Check fan gearbox oil level. Add OE/HDO or OEA, as needed, to bring oil level to center of sight glass. No oil in sight glass. Any Class II or greater oil leak. NOTE Drain oil only when hot after operation. b. Drain gearbox every 150 hours/1500 miles or semiannually. 1) Place a suitable container under fan gearbox drain. 2) Remove drain plug and packing from gearbox housing and drain oil into container (WP 0215 00). Discard packing. 3) Inspect drain plug and oil for metallic particles and foreign matter. If metal chips are found, notify your supervisor. 0120 00-92