TM 9-2320-361-20 12-22. FRONT AND REAR FUEL TANK DISCHARGE TUBES REPLACEMENT (M49A2C) (Contd) 2. Remove six locknuts (3) and three U-bolts (9) from discharge tube (1) and frame (2). Discard locknuts (3). 3. Remove two nuts (8), screws (4), coupling (5), and gasket (7) from discharge tube (1) and discharge valve (6). Discard gasket (7). 4. Remove discharge tube (1) from discharge valve (6), manifold (14), and frame (2). b. Installation 1. Position discharge tube (1) on discharge valve (6). 2. Install new gasket (10) and discharge tube (1) on manifold (14) with coupling (11), two screws (13), and nuts (12). 3. Install new gasket (7) and discharge tube (1) on discharge valve (6) with coupling (5), two screws (4), and nuts (8). 4. Install discharge tube (1) on frame (2) with three U-bolts (9) and six new locknuts (3). 12-38