TM 55-1520-240-1
4-6.6 NO. 1 EMERG ENG TRIM CIRCUIT BREAKER WILL
NOT STAY CLOSED (Continued)
4-6.6
OPEN NO 1 PDP CHECK FOR
GROUND FAULT ON CB
103CB3 CIRCUIT SIDE TERM IS
GROUND
PRESENT?
CHECK FOR GROUND FAULT
ON EM ERG ENG TRIM PANEL
ENGINE 1 INC. -DEC. SWITCH
103S3 TERM 1 IS GROUND
PRESENT?
Y ES
REMOVE WIRE FROM RELAY
103K4
TERM
A1
IS
GROUND
PRESENT?
LOCATE GROUND FAULT
BETWEEN RELAY 103K4 AND
SWITCH 103S3 ON WIRES
W 5 5 7 - 8 3 3 . 2 2 , W 6 4 5 - 3 3 1 - 22
0R W591-61-22 REPAIR OR
REPLACE WIRE AS REQUIRED
OPEN NO 1 ENGINE ACCESS
DOORS DISCONNECT POWER
TURBINE ACTUATOR PLUG
CHECK FOR GROUND FAULT
ON RELAY 103K4 TERM B2 IS
GROUND PRESENT?
REPLACE RELAY 103K4
DISCONNECT ENGINE TO
AIRFRAME PLUG AT
DISCONNECT SHELF IS
GROUND STILL PRESENT ON
RELAY 103K4 TERM B2?
LOCATE GROUND FAULT BE
TWEEN RELAY 103K4 AND
DISCONNECT SHELF PLUG
300J33 ON WIRE W591-32-
22 REPAIR OR REPLACE WIRE
AS REQUIRED
NO
REPLACE NO 1 ENGINE
POWER TURBINE ACTUATOR
REPLACE ENGINE TO
AIRFRAME HARNESS
LOCATE GROUND FAULT
BETWEEN SWITCH 103S3 AND
CB 103CB3 ON WIRES W550-
1 7 9 - 2 2 W 6 4 5 - 3 0 6 - 2 2 , W 5 5 7 -
828-22 OR W577-830-22
REPAIR OR REPLACE WIRE AS
REQUIRED
REPLACE NO 1 EMERGENCY
ENGINE TRIM CB 103CB3
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