Installation of the Fan Exit Liner Segments [PW11]

TASK 72-21-08-400-801-A
Installation of the Fan Exit Liner Segments

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

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

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	1	ACCESS PLATFORM 1M(3 FT)
No specific	Torque wrench: range to between 30 and 26 lbf.in (0.34 and 0.29 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P06-054)	Antigalling Compound

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
Fan Exit Liner Segments
Fan Exit Liner Segments
Fan Exit Liner Segments
Fan Exit Liner Segments

3. Job Set-up
Subtask 72-21-08-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 72-21-08-010-052-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

Subtask 72-21-08-040-051-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser for Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Make sure that you did the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 72-21-08-010-053-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Make sure that the thrust reverser cowl-doors are open (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 72-21-08-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Fan Exit Liner Segments

CAUTION: USE THE CORRECT NASM 14191 TORQ-SET DRIVE BIT. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE SCREWS CAN OCCUR.

(1) Make sure that you remove COVER - PROTECTION as necessary to prevent damage to the engine.
(2) Install the liner segment (1) on the Compressor Intermediate Case (CIC) as follows:

Fan Exit Liner Segments ** ON A/C NOT FOR ALL

(a) Apply Antigalling Compound (Material No.P06-054) to the threads of the 11 screws (2).

NOTE: For new or refurbished bolts or nuts with baked on lubricant, do not do the wet application.

(b) Install the liner segment (1) with the 11 screws (2).
(c) TORQUE the 11 screws (2) to between 30 and 26 lbf.in (0.34 and 0.29 m.daN )

with the Bit.
(3) Install the two liner segments (12) and two duct segments (13) on the CIC as follows:

Fan Exit Liner Segments ** ON A/C NOT FOR ALL

(a) Apply Antigalling Compound (Material No.P06-054) to the threads of the 28 screws (2).

NOTE: For new or refurbished bolts or nuts with baked on lubricant, do not do the wet application.

(b) Install the two liner segments (12) with the 14 screws (2) fingertight.
(c) Install the two duct segments (13) with the 14 screws (2).
(d) TORQUE the 28 screws (2) to between 30 and 26 lbf.in (0.34 and 0.29 m.daN )

with the Bit.
(4) Install the two liner segments (12) and two duct segments (13) on the CIC as follows:

Fan Exit Liner Segments ** ON A/C NOT FOR ALL

(a) Apply Antigalling Compound (Material No.P06-054) to the threads of the 28 screws (2).

NOTE: For new or refurbished bolts or nuts with baked on lubricant, do not do the wet application.

with the Bit.
(5) Install the liner segment (25) and duct segments (13) to the CIC and bifurcation fairing as follows:

Fan Exit Liner Segments ** ON A/C NOT FOR ALL

(a) Apply Antigalling Compound (Material No.P06-054) to the threads of the 11 screws (2).

NOTE: For new or refurbished bolts or nuts with baked on lubricant, do not do the wet application.

(b) Install the liner segment (25) with the four screws (2) fingertight.
(c) Apply Antigalling Compound (Material No.P06-054) to the threads of the six screws (24).

NOTE: For new or refurbished bolts or nuts with baked on lubricant, do not do the wet application

(d) Install the six screws (24) to the bifurcation fairing and the liner segment (25) fingertight.
(e) Install the duct segment (13) with the seven screws (2) fingertight.
(f) TORQUE the six screws (24) to between 30 and 26 lbf.in (0.34 and 0.29 m.daN )

with the Bit.
(g) TORQUE the 11 screws (2) to between 30 and 26 lbf.in (0.34 and 0.29 m.daN )

with the Bit.
(6) Examine the assembly for unwanted objects, damage and correct assembly.

5. Close-up
Subtask 72-21-08-860-050-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR

Subtask 72-21-08-440-050-A ** ON A/C NOT FOR ALL

B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 72-21-08-410-050-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 02:48:57 UTC