Installation of the Thrust-Reverser Cowl Hinge-Fitting at RIB3

TASK 54-57-17-400-806-A
Installation of the Thrust-Reverser Cowl Hinge-Fitting at RIB3

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

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

ZONE: 410
ZONE: 420
FIN: 4020KM1
FIN: 4020KM2

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	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06LDG2)	Non Hardening Jointing Putty-High Temp. Area - Structure
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
410	ENG 1 PYLON BOX AND FORWARD FAIRING
420	ENG 2 PYLON BOX AND FORWARD FAIRING
413CL, 415AL, 415BR, 424CR, 425AL, 425BR
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 54-51-21-000-804-A	Removal of the Pylon Lateral Access-Doors
TASK 54-51-21-400-803-A	Installation of the Pylon Lateral Access-Doors
TASK 54-53-11-000-806-A	Removal of the Pylon-to-Wing Access Panels and Doors
TASK 54-53-11-400-806-A	Installation of the Pylon-to-Wing Access Panels and Doors
TASK 78-30-00-440-807-A	Reactivation of the Thrust Reverser System after Nacelle Maintenance (ICU)
TASK 78-32-11-000-803-A	Removal of the Thrust Reverser Cowl Doors
TASK 78-32-11-400-803-A	Installation of the Thrust Reverser Cowl Doors
Thrust-Reverser Cowl Hinge-Fitting at RIB3

3. Job Set-up
Subtask 54-57-17-010-064-A

A. Get Access
(1) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position:
(a) For the left pylon: at zone 415
(b) For the right pylon: at zone 425.
(2) Make sure that the thrust-reverser cowl doors are removed (Ref. AMM TASK 78-32-11-000-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
- 451AL and 452AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
- 461AL and 462AR.
(3) Make sure that the pylon lateral access-doors are removed (Ref. AMM TASK 54-51-21-000-804):
(a) For the left pylon: 415AL and 415BR
(b) For the right pylon: 425AL and 425BR.
(4) Make sure that the pylon-to-wing access panels are removed (Ref. AMM TASK 54-53-11-000-806):
(a) For the left pylon: 413CL
(b) For the right pylon: 424CR.

Subtask 54-57-17-941-061-A

B. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is set to NORM.
(b) Make sure that the ENG/MASTER 1(2) control switch was set to OFF not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) is(are) 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 the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to energize FADEC 1(2).

Subtask 54-57-17-110-052-A

C. Preparation for Installation
(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) If the parts kept from the removed component are not sufficiently clean, clean them with Non Aqueous Cleaner-General - - (Material No.08BAA9) and the Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Do an inspection of the component interfaces and the adjacent area.

4. Procedure
Subtask 54-57-17-420-064-A

A. Installation of the Thrust-Reverser Cowl Hinge-Fitting at RIB3

Thrust-Reverser Cowl Hinge-Fitting at RIB3

(1) If you install new reverser fittings, do a check of the dimensions of the new and the used reverser fittings.
(2) Use the location and the thickness of the peel shim recorded during the removal.
(3) Put the shim (1) in the correct position on the pylon.
(4) Put the thrust-reverser cowl hinge-fitting (2) in position.
(5) Apply Non Hardening Jointing Putty-High Temp. Area - Structure (Material No.06LDG2) on the shanks of the screws (3) and (4).

CAUTION: MAKE SURE THAT YOU INSTALL EACH OF THE SCREWS IN ITS CORRECT POSITION. THE SCREWS HAVE DIFFERENT LENGTHS. IF YOU DO NOT INSTALL EACH OF THE SCREWS IN ITS CORRECT POSITION, YOU CAN CAUSE DAMAGE.

(6) Install the screws (3) and (4).
(7) Install the washers (5) and the nuts (6).
(8) Tighten the nuts (6).

5. Close-up
Subtask 54-57-17-410-060-A

A. Close Access
(1) Install the pylon-to-wing access panels (Ref. AMM TASK 54-53-11-400-806):
(a) For the left pylon: 413CL
(b) For the right pylon: 424CR.
(2) Install the pylon lateral access-doors (Ref. AMM TASK 54-51-21-400-803):
(a) For the left pylon: 415AL and 415BR
(b) For the right pylon: 425AL and 425BR.
(3) Install the thrust-reverser cowl doors (Ref. AMM TASK 78-32-11-400-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
- 451AL and 452AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
- 461AL and 462AR.

Subtask 54-57-17-440-056-A

B. Reactivation of the Thrust Reverser
(1) Make the thrust reverser serviceable after maintenance (Ref. AMM TASK 78-30-00-440-807).

Subtask 54-57-17-942-053-A

C. Aircraft Maintenance Configuration
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:03:51 UTC