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COPLT  WSHLD  CONT  CIRCUIT  BREAKER  WILL  NOT  STAY  CLOSED
 COPILOTS   WINDSHIELD   DOES   NOT   GET   WARM

TM-55-1520-240-T-3 CH-47D Heilcopter Manual
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TM  55-1520-240-T 12-1.5  COPLT  WSHLD  HEAT  CIRCUIT  BREAKER  WILL  NOT  STAY  CLOSED FAULT  ISOLATION  PROCEDURE INITIAL   SETUP Applicable  Configurations: All Tools: Electrical  Repairer’s  Tool  Kit, NSN   5180-00-323-4915 Multimeter Materials: None Personnel Required: 68F20 Aircraft Electrician References: TM    55-1520-240-23 Equipment Condition: TM   55-1520-240-23: Battery Disconnected Electrical Power Off Hydraulic Power Off DID  CB  OPEN  BEFORE  CPLT WINDSHIELD   ANTI-ICE   SW SET TO ON? YES OPEN  NOSE  ACCESS  DOOR. REMOVE   DYNAMIC   ABSORBER, DISCONNECT PLUG 083P1 FROM COPILOT’S WINDSHIELD ANTI-ICING  CONTROL  BOX. CHECK  FOR  GROUND  ON  PLUG 083P1 PIN E. IS GROUND PRESENT? YES LOCATE  GROUND  FAULT  ON WIRE   W558-18-16.   W558-23. 12.  OR  W550-24-12  BETWEEN PLUG  083P1  AND  COPLT WSHLD  HEAT  CB.  REPAIR  OR REPLACE  WIRE  AS  REQUIRED. I LOCATE  GROUND  FAULT  ON WIRE   W558-22-12   BETWEEN I REPLACE  COPILOT’S  WIND. I COPILOTS  WINDSHIELD  AND COPILOT  ANTI-ICING  RELAY. SHIELD ANTI-ICING CONTROL BOX. REPAIR OR REPLACE WIRE AS REQUIRED. I 12-1.5 12-7







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