Removal of the Transfer Gearbox (TGB) Assembly Radial Shaft [CFML]

TASK 72-62-42-000-801-A
Removal of the Transfer Gearbox (TGB) Assembly Radial Shaft

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.

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	CAP - PROTECTION
No specific	1	CONTAINER 5 L (1.32 USGAL)
No specific	AR	COVER - PROTECTION
No specific	AR	WARNING NOTICE(S)

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
TASK 72-62-00-000-802-A	Removal of the Transfer Gearbox Assembly
Illustration of the Transfer Gearbox (TGB) Assembly Radial Shaft

3. Job Set-up
Subtask 72-62-42-941-050-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 a 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 72-62-42-010-050-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 72-62-42-020-050-A

WARNING: USE PERSONAL PROTECTION EQUIPMENT. USE THE ENGINE OIL IN A WELL-VENTILATED AREA. ENGINE OIL IS TOXIC.

A. Removal of the Transfer Gearbox (TGB) Assembly Radial Shaft (outer)

Illustration of the Transfer Gearbox (TGB) Assembly Radial Shaft

(1) Put a CONTAINER 5 L (1.32 USGAL) tank below the TGB assembly radial shaft (outer) (1).

CAUTION: DURING REMOVAL OF THE TRANSFER GEARBOX ASSEMBLY, BE CAREFUL NOT TO LET THE TRANSFER-GEARBOX RADIAL SHAFT FALL. IF YOU DO, DAMAGE TO THE RADIAL SHAFT CAN OCCUR.

(2) Remove the TGB assembly (2) (Ref. AMM TASK 72-62-00-000-802).
(3) Install the CAP - PROTECTION and COVER - PROTECTION on all open ports, open tubes, the open hoses and connectors.
(4) Remove the CONTAINER 5 L (1.32 USGAL) tank from below the TGB assembly radial shaft (outer) (1).

[Rev.10 from 2021] 2026.04.01 02:54:39 UTC