TM 9-2320-209-20-3-1 FRAME 3 1. 2. Using 9/16-inch wrench, screw on and tighten elbow (1). Using 5/8-inch wrench, screw on and tighten coupling nut (2) onto elbow (1). I 3. Plug two cable connectors (3) into solenoid (4). NOTE Follow-on Maintenance Action Required: 1. Reconnect battery ground cable. Refer to para 7-58. 2. Run engine to build up air pressure in reservoirs and check air horn operation. Refer to TM 9-2320-209-10. 3. Close hood and right side panel. Refer to TM 9-2320-209-10. END OF TASK 7-201