Removal of the Manual-Control Cover of the Accessory Gearbox (AGB) [CFML]

TASK 72-63-03-000-801-A
Removal of the Manual-Control Cover of the Accessory Gearbox (AGB)

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.

WARNING: YOU MUST USE CORRECT APPLICABLE GLOVES, FACEMASK, EYESHIELDS AND PROTECTIVE CLOTHES AT ALL TIMES.

WARNING: ALWAYS USE APPROVED EQUIPMENT AND PROCEDURES TO LIFT PARTS. STAY OUT FROM BELOW LOADS. IF THE PARTS ACCIDENTALLY MOVE OR FALL, THEY CAN CAUSE AN INJURY OR KILL YOU.

ZONE: 400

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

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)
956A1609G01	1	TOOL SET - JACK SCREW

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
Accessory Gearbox (AGB) Manual-Control Cover

3. Job Set-up
Subtask 72-63-03-941-050-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 the WARNING NOTICE(S) in position to tell persons not to operate:

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

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

Subtask 72-63-03-010-050-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.

4. Procedure
Subtask 72-63-03-020-050-A

A. Removal of the Accessory Gearbox (AGB) Manual-Control Cover (1)
(1) Remove the manual-control cover (1) from the AGB assembly as follows:
(a) Remove the bolts (2) and the washers (3) that attach the manual-control cover (1) to the AGB.
(b) Install the two jackscrews (2) from the 956A1609G01 TOOL SET - JACK SCREW in the extract holes of the manual-control cover (1).
(c) Turn the jackscrews (2) until you can remove the manual-control cover (1) from the AGB.
(d) Remove the manual-control cover (1).
(e) Remove and discard the O-ring (4).

[Rev.10 from 2021] 2026.04.01 02:54:50 UTC