Removal of the Gearbox Breather Outlet Duct [IAE]

TASK 71-13-16-000-012-B
Removal of the Gearbox Breather Outlet Duct

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: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
This TASK is for V2500-A5 engines.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-16-000-011-B	Removal of the Gearbox Breather Vent
Gearbox Breather Outlet Duct

3. Job Set-up
Subtask 71-13-16-941-058-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 71-13-16-010-061-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

4. Procedure
Subtask 71-13-16-020-056-A ** ON A/C NOT FOR ALL

A. Remove the gearbox breather outlet duct

Gearbox Breather Outlet Duct ** ON A/C NOT FOR ALL

(1) Remove the gearbox breather vent (Ref. AMM TASK 71-13-16-000-011).
(2) Remove the nut (6) and the washer (5) from the Hi-Lok bolt (4).
(3) Remove the hi-lok bolt (4) from the right fan cowl door (3). assembly (1).

PRE SBN 71-0181

(4) Carefully drill out rivets (2) and remove the gearbox breather outlet duct (7).

POST SBN 71-0181

(5) Carefully drill out rivets (2) and remove the gearbox breather outlet duct (7) and bracket (8).
(6) Remove the sealant from the removed parts and from around the removal area.

END SBN 71-0181

(7) Put caps on the gearbox breather outlet duct (7) and the gearbox breather duct assembly (1).

[Rev.10 from 2021] 2026.04.01 02:29:56 UTC