TM 9--2350--292--20--1 0187 00--144 0187 00 PREVENTIVE MAINTENANCE CHECKS AND SERVICES INCLUDING LUBRICATION INSTRUCTIONS -- CONTINUED TABLE 3 PREVENTIVE MAINTENANCE CHECKS AND SERVICES INCLUDING LUBRICATION INSTRUCTIONS, SEMIANNUALLY -- CONTINUED ITEM NO. NOT FULLY MISSION CAPABLE IF: PROCEDURE LOCATION ITEM TO CHECK/ SERVICE INTERVAL SEMIANNUALLY EXTERIOR 55 Auxiliary Power Unit (ONAN) a. Open auxiliary power unit access door (1) (TM 9--2350--292--10). LUBRICANTS/ COMPONENTS REFILL CAPACITY EXPECTED TEMPERATURE* +40°F to --10°F (+4°C to --23°C) Above +32°F (Above 0°C) 0°F to --65°F (--17°C to --54°C) OIL: Lubricating Oil, OE/HDO MIL--L--2104 or OEA MIL--L--46167 3.5 qt (3.31L) 15 W40 or OE/HDO--30 (0--237) OE/HDO--10 (0--237) OEA (0--183) *For Arctic Operation, refer to FM 9--207 b. Replace oil filter (2) (WP 0596 00). Check engine oil level gauge (3), which should indicate full. Add oil as required. Any Class III leak or low engine oil level. 1 3 2