TM 9-2320-209-20-3-1 Section VII. HORN ASSEMBLY 7-52. HORN BUTTON REMOVAL, REPAIR, AND REPLACEMENT. TOOLS: Flat-tip screwdriver SUPPLIES: Solvent, dry cleaning, type II (SD-2), Fed. Spec P-D-680 Safety wire, MS 20995-N51-18 PERSONNEL : One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Preliminary Procedures. (1) Open left side panel. Refer to TM 9-2320-209-10. (2) Disconnect battery ground cable. Refer to para 7-58. b. Removal. 1. Lift rubber cap (1) off horn button (2). Press down on horn button and turn to left one quarter turn. 2. Lift off horn button (2) and take out contact (3), spring (4), and cap (5). GO TO FRAME 2 7-190