TM 55-1520-240-T
4-6.9 NO. 2 EMERGENCY ENGINE TRIM CIRCUIT BREAKER
WILL NOT STAY CLOSED (Continued)
OPEN NO 2 PDP CHECK FOR
GROUND FAULT ON CB
103CB3 CIRCUIT SIDE TERM IS
GROUND PRESENT?
CHECK FOR GROUND FAULT
ON ENGINE TRIM PANEL
ENGINE NO. 2 INC.-DEC.
SWITCH 103S4 TERM 4 IS
REMOVE WIRE FROM RELAY
103K3 A1 IS GROUND
PRESENT?
LOCATE GROUND FAULT
BETWEEN RELAY 103K3 AND
SWITCH 103S4 ON WIRE
W 5 5 7 - 8 3 6 - 2 2 , W 6 3 9 - 3 2 1 - 22
OR W592-32-22 REPAIR OR
REPLACE WIRE AS REQUIRED
NO
REPLACE RELAY 103K4
OPEN NO 2 ENGINE ACCESS
DOORS DISCONNECT POWER
TuRBINE ACTUATOR PLUG
CHECK FOR GROUND FAULT
ON RELAY 103K3 TERM A2 IS
GROUND PRESENT?
DISCONNECT ENGINE TO
AIRFRAME PLUG AT
DISCONNECT SHELF IS
GROUND PRESENT?
LOCATE GROUND FAULT BE
TWEEN RELAY 103K3 AND
SWITCH 103S4 ON WIRE
2
5
5
7
8
37 2 2 . W 6 3 9 - 3 2 2 - 22
OR W592 3322 REPAIR OR
REPLACE WIRE AS REQUIRED
NO
REPLACE NO 2 ENGINE
POWER TURBINE ACTUATOR
4-6.9
REPLACE NO 2 EMERGENCY
ENGINE TRIM CB 103CB6
LOCATE GROUND FAULT
BETWEEN SWITCH 103S4 AND
CB 103CB6 ON W I R E W 5 5 2 -
1 6 7 - 2 2 ,
W 6 3 9 - 3 4 3 - 2 2 , W 5 5 7 -
827-22 OR W557-829-22
REPAIR OR REPLACE WIRE AS
REQUIRED
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