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Page Title: 4-63. CONTROL BOX
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ARMY TM 9-4210-381-14 NAVY EE-000-CA-MMA-010/7053-AC AIR FORCE TO 35E9-136-31 4-63.  CONTROL BOX. This task covers: Inspection Testing Removal Repair/Replace Installation INITIAL SETUP: Tools: Tool kit, service, refrigeration unit (Item 1, Appendix B) Drill, electric, portable (Item 6, Appendix B) Drill set, twist (Item 7, Appendix B) Riveter, blind (Item 8, Appendix B) Soldering Iron (Item 16, Appendix B) Goggles, industrial (Appendix C) Personnel: 1 Materials: Solder, lead-tin alloy (Item 18, Appendix E) Flux, soldering, liquid rosin base (Item 19, Appendix E) Equipment Conditions: WARNING Disconnect input power to the air conditioner before performing, any internal maintenance.  Voltages used can KILL.  Shutting the unit off at the control panel does not disconnect unit power. 1.  Disconnect air conditioner input power at source. 2.  Remove center front evaporator panel (para 4-22). 3.  Open left electric plate (para 4-30). 4.  Open right electric plate (para 4-31). 5.  Open control box (para 4-45). INSPECTION 1. Check control box (13) for dents, cracks, punctures, or missing mounting hardware.  Replace if damage creates a hazard or interferes with operation (see Figure 4-66). 2.      Check that hinge (4), receptacles (10), bushing (14) and locking ring (7) are in place and secure.  Repair or replace as needed. REMOVAL 1. Remove four screws (1), flat washers (2) and locknuts (3). 2. Remove bolt (20), locknut (18) and two flat washers (19). 3. Set control box (13) in evaporator compartment. REPAIR/REPLACE NOTE Repair consists of replacing hinge, receptacle ,bushing and locking ring, brace, or control box. 4-120

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