ENGINE NO. 1 TRIM CIRCUIT BREAKER WILL NOT STAY CLOSED (Continued)

ENGINE NO. 1 TRIM CIRCUIT BREAKER WILL NOT STAY CLOSED (Continued) - TM-55-1520-240-T-1_345

ENGINE NO. 1 TRIM CIRCUIT BREAKER WILL NOT STAY CLOSED (Continued) - TM-55-1520-240-T-1_347

TM-55-1520-240-T-1 CH-47D Heilcopter Manual
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TM 55-1520-240-T 4-6.4 ENGINE NO. 1 TRIM CIRCUIT BREAKER WILL NOT STAY CLOSED (Continued) 4 - 6 .4 REMOVE COPILOT’S FLOOR PANEL. DISCONNECT CO- PILOT’S THRUST GRIP PLUG. CHECK FOR GROUND ON TB 18 TERM 12. IS GROUND PRESENT? 4-126 YES REMOVE PILOT’S FLOOR PANEL. DISCONNECT Pl- LOT’S THRUST GRIP PLUG. CHECK FOP. GROUND ON TB 18 TERM 12. IS GROUND PRESENT? YES OPEN LEFT ELECTRICAL COMPARTMENT. REMOVE WIRE FROM RELAY 103K1 TERM X1. IS GROUND PRE- SENT ON WIRE? NO CHECK FOR GROUND ON RELAY 103K1 TERM X1. IS GROUND PRESENT? NO REPAIR OR REPLACE CO- PILOT’S THRUST GRIP. REPAIR OR REPLACE Pl- LOT’S THRUST GRIP. LOCATE GROUND FAULT BETWEEN 103K1, 300J26, AND 300J21 ON WIRES YES W696-43-22 OR W696-48- 22 OR W645-314-22 OR W591 -26-22. REPAIR OR REPLACE WIRE AS RE- QUIRED. DISCONNECT WIRE FROM RELAY 103K1 TERM A2. IS GROUND PRESENT? DISCONNECT PLUG 103P1 AT NO. 1 ENGINE CONTROL BOX. CHECK FOR GROUND ON PLUG 103P1 PIN A. IS GROUND PRESENT? REPLACE RELAY 103K1. REPLACE RELAY 103K1. Change 2 LOCATE GROUND FAULT ON WIRE W591-25-22 BE- TWEEN PLUG 103P1 AND RELAY 103K1. REPAIR OR REPLACE WIRE AS RE- QUIRED. GO TO NEXT PAGE

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