TM 9-2520-246-34-1 P. Handbrake Brakeshoe Adjustment. FRAME 1 1. Loosen jamnut (1). 2. Check that clearance between outer brakeshoe (2) and brakedrum (3) is at least 0.015-inch all along. 3. Screw in adjusting screw (4) until clearance in step 2 is 0.015-inch at the highest point. 4. Tighten jamnut (1). END OF TASK 2-282