TM 9-2320-209-20-3-1 b. Replacement. (1) Front ground strap. FRAME 1 1. Put ground strap (1) on stud (2). Using 9/16-inch wrench, screw on and tighten washer (3) and locknut (4). 2. Slide open end of ground strap (1) between washer (5) and crossmember (6). 3. Using 7/16-inch wrench, tighten capscrew (7). END OF TASK 7-220