Installation of the Aft Centering Pins at RIB5

TASK 54-51-43-400-802-A
Installation of the Aft Centering Pins at RIB5

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.

CAUTION: BEFORE YOU INSTALL/REMOVE THE GSE-TOOL, READ THE INSTRUCTIONS IN THE APPLICABLE GSE INSTRUCTION MANUAL. WHILE YOU OPERATE THIS TOOL, CAREFULLY OBEY THEM. IF YOU DO NOT OBEY THE INSTRUCTIONS, DAMAGE TO EQUIPMENT CAN OCCUR.

ZONE: 410
ZONE: 420
FIN: 4020KM1 ** ON A/C NOT FOR ALL
FIN: 4020KM2 ** ON A/C NOT FOR ALL

1. Reason for the Job

NOTE: Two persons are necessary to do this task.

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	Torque wrench: range to between 11.55 and 10.45 m.daN (85.18 and 77.06 lbf.ft )
98D54503003000	1	ALIGN CENTRING PINS PW

B. 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
415BL, 415BR, 425BL, 425BR
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 26-21-41-400-001-E	Installation of the Engine Fire-Extinguisher Bottle
TASK 54-51-21-400-802-A	Installation of the Pylon Lateral Access-Doors
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 71-00-51-400-802-A	Installation of the Power Plant (Bootstrap Method)
TASK 71-00-51-400-802-A-01	Installation of the Power Plant (JacXson Method)
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 71-22-41-400-805-A	Installation of the Aft Mount Assembly
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
Aft Centering Pins at RIB5
Alignment of the Aft Centering Pins at RIB5

3. Job Set-up
Subtask 54-51-43-941-053-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 54-51-43-040-053-A ** ON A/C NOT FOR ALL

B. Deactivation of the Thrust Reverser

WARNING: MAKE SURE THAT THE THRUST REVERSER IS LOCKED. IF NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE REVERSER.

(1) Make sure that the thrust reverser is unserviceable for maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 54-51-43-010-057-A ** ON A/C NOT FOR ALL

C. 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 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.
(3) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For the left pylon, in zone 415
(b) For the right pylon, in zone 425.

Subtask 54-51-43-110-051-A ** ON A/C NOT FOR ALL

D. Preparation for Installation
(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Do an inspection of the component interfaces and the adjacent area.

4. Procedure
Subtask 54-51-43-420-051-A ** ON A/C NOT FOR ALL

A. Installation of the Aft Centering Pins at RIB5

Aft Centering Pins at RIB5 ** ON A/C NOT FOR ALL

Alignment of the Aft Centering Pins at RIB5 ** ON A/C NOT FOR ALL

NOTE: Two person are necessary to install the aft centering pins:

one to hold the wrench head
another one to hold the wrench handle and apply the torque.

(1) Make sure that the aft centering pins (3) and/or (4) are in the correct condition. If one of the aft centering pins (3) and/or (4) is not in the correct condition discard it and install a new centering pin (3) and/or centering pin (4).
(2) Put the aft centering pins (3) and (4) in position.
(3) Install the washers (2) and the new nuts (1).
(4) Make sure that the aft centering pins (3) and (4) are aligned. To do this, put the 98D54503003000 ALIGN CENTRING PINS PW (5) and (6) into the holes of the centering pins (3) and (4) (in the correct direction).
(5) TORQUE the nuts (1) to between 11.55 and 10.45 m.daN (85.18 and 77.06 lbf.ft )

.
(6) Remove the 98D54503003000 ALIGN CENTRING PINS PW (5) and (6) from the centering pins (3) and (4).

5. Close-up
Subtask 54-51-43-410-051-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Install the engine fire-extinguisher bottle (Ref. AMM TASK 26-21-41-400-001).
(2) Install the pylon lateral access-doors (Ref. AMM TASK 54-51-21-400-802):
(a) For the left pylon: 415BL 415BR
(b) For the right pylon: 425BL 425BR.
(3) Install the aft mount assembly (Ref. AMM TASK 71-22-41-400-805).
(4) Install the power plant (Ref. AMM TASK 71-00-51-400-802).
(5) 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.
(6) 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.

Subtask 54-51-43-440-051-A ** ON A/C NOT FOR ALL

B. Reactivation of the Thrust Reverser
(1) Make the thrust reverser serviceable after maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 54-51-43-942-051-A ** ON A/C NOT FOR ALL

C. Close Access
(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 02:01:24 UTC