TM 9-2320-209-34-2-2 b. Removal. 1. 2. 3. GO NOTE If working on fuel trucks M49A1C or M49A2C, go to frame 2. Loosen gat valve (1) three turns. Take off four self-locking nuts (2) and bolts (3). Take gravity delivery line gate valve assembly (4) tube (6). Throw away gasket. TO FRAME 2 and gasket (5) off 17-328