Removal of the Generator Control and Monitor Harness from the Pylon to the Generator [CFML]

TASK 71-51-43-000-808-A
Removal of the Generator Control and Monitor Harness from the Pylon to the Generator

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

FIN: 4002XU
FIN: 4003XU
FIN: 4004XU
FIN: 4005XU

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CAP - PROTECTION
No specific	AR	COVER - PROTECTION
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 70-70-00-910-804-A	Electrical Standard Practices
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
Generator Control and Monitor Harness from the Pylon to the Generator

3. Job Set-up
Subtask 71-51-43-941-084-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put WARNING NOTICE(S) in position to tell persons not to operate:

The ENG/MODE selector switch
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

Subtask 71-51-43-010-104-A

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position under the right fan cowl door.

4. Procedure
Subtask 71-51-43-020-088-A

A. Removal of the Generator Control and Monitor Harness from the Pylon to the Generator
(1) Before you remove the electrical harness (2) make a record of the harness routing to help during installation.
(2) Disconnect the electrical connectors that follow (Ref. AMM TASK 70-70-00-910-804):

Disconnect the electrical connectors (3) and (4) from the receptacles on the pylon junction box (1).

(3) Disconnect the electrical harness (2) from the right side of the engine as follow:
(a) Remove the bolt (7) that attaches the P-clamp (8) to the support bracket (6).
(b) Remove the bolt (5) that attaches the P-clamp (10) to the support bracket (9).
(c) Pull the electrical harness (2) out of the spring clips on the support brackets (12), (13), (14), (16) and (17).
(4) Disconnect the electrical connectors that follow (Ref. AMM TASK 70-70-00-910-804):

Disconnect the electrical connector (27) from the receptacle on the Integrated Drive Generator (IDG) (26).
Remove the two bolts (29) and disconnect the electrical connector (28) from the receptacle on the support bracket (23).

(5) Disconnect the electrical harness (2) from the left side of the engine as follow:
(a) Pull the electrical harness (2) out of the spring clips on the support brackets (18), (19), (20) and (21).
(6) Remove the electrical harness (2) from the engine.
(7) Make a record of the position of the P-clamps (8), (10), (25) and (31) on the electrical harness (2) to help during installation.
(8) Remove the P-clamps (8), (10), (25) and (31) from the electrical harness (2).
(9) Install COVER - PROTECTION and CAP - PROTECTION on all open ports, open tubes, open hoses, and connectors.

[Rev.10 from 2021] 2026.04.02 06:33:28 UTC