Installation of the Gearbox Breather Vent [IAE]

TASK 71-13-16-400-011-B
Installation of the Gearbox Breather Vent

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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)
No specific	Torque wrench: range to between 44 and 36 lbf.in (0.50 and 0.41 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-076)	Methyl Ethyl Ketone, Technical grade
(Material No.V05-057)	sealing compound
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
Gearbox Breather Vent

3. Job Set-up
Subtask 71-13-16-860-054-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 71-13-16-010-060-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (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 71-13-16-420-054-A ** ON A/C NOT FOR ALL

A. Install the gearbox breather vent

Gearbox Breather Vent ** ON A/C NOT FOR ALL

(1) Remove the caps from the gearbox breather vent (5), the gearbox breather outlet duct (7) and the gearbox breather duct assembly (1).
(2) Clean the replacement parts
(a) Clean the replacement parts and their interfaces with a clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with V01-076Methyl Ethyl Ketone, Technical grade.
(3) Apply sealant
(a) Apply a thin layer of the sealing compound (Material No.V05-057) on the base of the gearbox breather vent.
(4) Align the holes in the gearbox breather vent (5) with the holes in the right fan cowl door (6).
(5) Install the bolts (4), the washers (3) and the nuts (2).
(6) TORQUE the nuts (2) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN )

.
(7) Remove any unwanted sealant from the right fan cowl door (6).

5. Close-up
Subtask 71-13-16-410-054-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

[Rev.10 from 2021] 2026.04.01 12:56:22 UTC