TM 10-6640-215-13 4-21.  REMOVE/INSTALL POWER PANEL NUMBER 2 COMPONENTS. This task covers: a. Disassembly c.   Installation b. Removal d.   Assembly INITIAL SET-UP: Tools Required General Mechanics Tool Kit.  (Appendix B, Section III, Item 2) ' Soldering Gun, (Appendix B, Section II1, Item 1) Fusepuller, (Appendix B, Section III, Item 1) Materials/Parts Required Solder, (Appendix E, Section II, Item 133) Equipment Condition Power Input Cable Disconnected (Paragraph 2-9) General Safety Instructions WARNING ELECTRICAL SHOCK Before   performing   any   maintenance   actions   on   electrical   equipment,   ensure   all electrical power has been turned off.  Death or serious injury may occur from failure to do this. DISASSEMBLY Disassemble Panelboard Front Assembly.  See figure 4-10. a. Turn off all equipment. b. Open all circuit breakers located in the panelboard. c. Open circuit breaker A1CB2 in Main Power Panel. d. Remove four mounting screws, and remove outside panelboard cover. e. Remove four mounting screws, lockwashers, flat washers, and remove circuit breaker cover. REMOVAL 1. Remove Circuit Breakers.  See figure 4-10. a. Remove one mounting screw with keeper and withdraw defective circuit breaker to gain access to wires. b. Loosen one terminal screw, then tag and disconnect wire. c. Remove defective circuit breaker. 4-46