TM 9-2320-209-20-3-3 FRAME 4 1. Fill hydraulic tank (1) with lubricating oil to FULL mark on filler cup and gage assembly (2). Refer to LO 9-2320-209-12/1. NOTE Follow-on Maintenance Action Required: 1. Operate pump. Refer to TM 9-2320-209-10. 2. Check pump and hose fittings for leaks. 3. Check oil level and fill hydraulic tank again if needed. Refer to LO 9-2320-209-12/1. END OF TASK 18-466