TM 9-2320-209-20-3-2 FRAME 2 1. 2. NOTE If truck does not have air brake hand control valve, do not do step 1. Slide air brake hand control valve (1) up on steering column (2). Using 5/16-inch allen wrench, tighten two screws (3). Slide turn signal control (4) up on steering column (2). Using screwdriver, tighten clamp screw (5). NOTE Follow-on Maintenance Action Required: 1. Replace horn cable. Refer to Part 1, para 7-54. 2. Replace horn button. Refer to Part 1, para 7-52. 3. Reconnect battery ground cable. Refer to Part 1, para 7-58. END OF TASK 15-36