TM 9-2320-209-20-3-3 b. Replacement. FRAME 1 1. Hold circuit breaker (1) up to mounting bracket (2). 2. Put wire (3) into bottom of circuit breaker (1) and using flat-tip screwdriver, tighten screw (4). 3. Put bottom of circuit breaker (1) into mounting bracket (2) and push in top. GO TO FRAME 2 18-373