TM 10-6640-215-13 4-11. REPAIR UTILITIES BOX-continued. 2. Install Direction Valve. a. Position direction valve with new gasket on utilities box. b. Secure direction valve to utilities box with four screws. 3. Install Coupling Assembly. a. Place new gasket on coupling assembly. b. Position coupling assembly with gasket into utilities box. c. Secure coupling assembly with four screws, washers, and nuts. 4. Install Door Assembly. a. Position door assembly over utilities box. b. Secure door assembly by installing seven rivets through door assembly with utilities box between door and semi-trailer van (3) c. Latch door assembly to semi-trailer van. 4-12. REMOVE/INSTALL POWER ENTRY PANEL This task covers:   a. Removal b. Installation INITIAL SETUP: Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 2) Portable Electric Drill, (Appendix B, Section III, Item 1) Twist Drill Set, (Appendix B, Section III, Item 1) Hand Blind Riveter, (Appendix B, Section III, Item 3) Soldering Gun, (Appendix B, Section III, Item 1) Materials/Parts Required Rivets, (Appendix F) 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. REMOVAL Remove Power Entry Panel.  See figure 4-2. 4-24