TM 10-3930-671-24 NOTE Drain pan must have capacity to hold 8 gal (30 I). (c) Position appropriate drain pan under fuel tank (2). (d) Remove plug (3) and washer (4) from fuel tank (2) to drain all fuel from fuel tank. (e) Remove nut (5), screw (6), seal (7), and shield (8) from fuel tank (2) filler and rest on frame (9).  Discard seal. NOTE Tag and mark all wires prior to removal. (f) Remove wires (10 and 11) from terminals (12 and 13). Fuel is very flammable and can explode easily.  To avoid serious injury or death, keep fuel away from open fire and keep fire extinguisher within easy reach when working with fuel.  Do not work on fuel system when engine is hot.  Fuel can be ignited by hot engine.  When working with fuel, post signs that read NO SMOKING WITHIN 50 FEET (15 m) of vehicle. NOTE • Prior to removal, position wiping rag under fuel lines to catch any spilled fuel. • Tag and mark all fittings and hoses prior to removal. • Note position and alignment of all fittings and hoses prior to removal. (g) Remove two fuel lines (14) from fuel gauge sending unit (15). (h) Remove retainer (16), fuel gauge sending unit (15), and seal (17) from fuel tank (2).  Discard seal. (i) Remove nut (18) and clip (19) from screw (20). (l) Remove two nuts (21), screws (22), spacers (23), clip (19), and fuel tank (2) from frame (9). (k) Remove fastener (24) and screw (20) from frame (9).  Discard fastener. (3) To install fuel tank, proceed as follows: (a) Install screw (20) on frame (9) with fastener (24). (b) Install fuel tank (2) on frame (9) with two screws (22), spacers (23), clip (19), and two nuts (21), and clip (19) and nut (18).  Tighten two nuts (21) 400-440 Ib-ft (542-596 N-m) and nut (18) 30-37 Ib-ft (40-50 N-m). (c) Install seal (17) and fuel gauge sending unit (15) on fuel tank (2) with retainer (16). (d) Install two fuel lines (14) on fuel gauge sending unit (15). 3-29