COPLT WSHLD HEAT CIRCUIT BREAKER WILL NOT STAY CLOSED

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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