TM 9-2320-361-34 15-13. SUMP VALVE, DRAIN VALVES, AND DRAIN TUBES MAINTENANCE (M49A2C) (Contd) b. Drain Tubes and Drain Valves Removal 1. Disconnect tube nuts (7) and (11) from elbows (5) and (13). 2. Remove tubes (8) and (10) with tube nuts (7) and (11) and sleeves (6) and (12). 3. Remove valve (14) from drain valve housing (15). 4. Remove elbow (13), drain valve housing (15), and nipple (1) from tank (3). NOTE The short nipple should be removed if defective or damaged. 5. Remove elbow (5) and drain valve (4) from nipple (9). c. Sump Valve Disassembly 1. Remove six screws (19), cover (18), and gasket (17) from tank (3). Discard gasket (17). 2. Remove sump valve (16) from cover (18). 3. Remove six cotter pins (23) from six pins (25). Discard cotter pins (23). 4. Remove six pins (25), link (21) with float (20), float lever (22), lever links (24) and (30), valve lever (29), and needle valve (26) from frame (28). 5. Remove link (21) from float (20). 6. Remove valve seat (27) from frame (28). Discard valve seat (27). d. Cleaning and Inspecticm 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 15-58 For general cleaning instructions, refer to para. 2-8. For general inspection instructions, refer to para. 2-9. Inspect pad (2) for tears or dry rot. Replace pad (2) if damaged. Inspect tank (3) for cracks or damaged threads. Replace tank (3) if damaged. Inspect cover (18) for cracks or damaged threads. Replace cover (18) if damaged. Inspect drain valve (4), drain valve housing (15), and valve (14) for damaged threads, leakage, or cracks. Replace drain valve (4), drain valve housing (15), or valve (14) if damaged. Inspect nipple (9) in cover (18) and nipple (1) for damaged threads or cracks. Replace cover (18) or nipple if damaged. Inspect elbows (5) and (13) for cracks, damaged sleeve contact surface, or damaged threads. Replace elbow (5) or (13) if damaged. Inspect tube nuts (7) and (11) on tubes (8) and (10) for cracks or damaged sleeve contact surfaces or damaged threads. Replace tube (8) or (10) if damaged. Inspect sleeves (6) and (12) on tubes (8) and (10) for cracks or defects. Remove sleeves (6) and (12) from tubes (8) and (10) and replace if damaged. Inspect tubes (8) and (10) for kinks, cracks, or other damage. Replace tube (8) or (10) if damaged.