TM 10-3930-659-20 5-15. FUEL LINES AND FITTINGS REPLACEMENT.(Con’t). 2. Remove fitting (4), elbow (3), and filter (2) from fuel tank (1).  Discard filter if damaged or plugged. 3. Install filter (2), elbow (3), and fitting (4) on fuel tank (1). 4. Install fuel line (5) on elbow (6) and fitting (4). TA706873 5-41