Removal of the Pylon-to-Wing Forward Attach-Fittings at RIB5

TASK 54-51-17-000-808-A
Removal of the Pylon-to-Wing Forward Attach-Fittings at RIB5

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

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: DO NOT GET FUEL IN YOUR MOUTH, EYES OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM THE FUEL. KEEP THE FUEL AWAY FROM SPARKS, FLAME AND HEAT. FUEL IS POISONOUS AND FLAMMABLE, WHICH CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO 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: 470
ZONE: 480
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 4M (13 FT)-ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	CONTAINER 3 L(3/4 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	WARNING NOTICE(S)
98D54003005001	1	PYLON SHAFT EXTRACTOR
98D54403000000	1	DUMMY SHACKLES-PYLON TO WING YOKES
98D54403001000	1	DUMMY SLEEVES-PYLON TO WING YOKES
98D54403009000	1	DYNAMOMETRIC ADAPTOR
98D54503000001	1	PYLON R/I WRENCH SET

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
470	ENGINE 1 AFT PYLON
480	ENGINE 2 AFT PYLON
413ET, 423ET, 471AL, 471BL, 472AR, 481AL, 482AR, 482BR
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 05-57-00-200-001-B	Aircraft Stability
TASK 07-11-00-581-001-A	Lifting for Aircraft Maintenance Operations
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-16-42-000-001-A	Removal of the Fuel Recirculation Check-valve
TASK 28-25-00-650-001-A	Pressure Defuel
TASK 54-53-11-000-806-A	Removal of the Pylon-to-Wing Access Panels and Doors
TASK 71-00-51-000-803-A	Removal of the Power Plant with 2D Bootstrap
TASK 71-13-11-000-806-A	Removal of the Fan Cowl Doors
TASK 78-30-00-040-807-A	Deactivation of the Thrust Reverser System for Nacelle Maintenance (ICU)
TASK 78-32-11-000-803-A	Removal of the Thrust Reverser Cowl Doors
Electrical Connectors and Rods
Fuel System - Pylon-to-Wing Junction
Pylon-to-Wing Forward Attach-Fittings at RIB5

3. Job Set-up
Subtask 54-51-17-941-073-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put a WARNING NOTICE(S) 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) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
(3) Obey the fuel safety procedures when you do work on the fuel system (Ref. AMM TASK 28-00-00-910-001).
(4) Defuel the applicable aircraft wing-tank (Ref. AMM TASK 28-25-00-650-001).

Subtask 54-51-17-040-059-A

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 the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-040-807).

Subtask 54-51-17-869-064-A

C. Aircraft Stability
(1) Make the aircraft stable (Ref. AMM TASK 05-57-00-200-001).

Subtask 54-51-17-581-057-A

D. Aircraft Lifting
(1) Lift the aircraft (Ref. AMM TASK 07-11-00-581-001).

NOTE: It is not necessary to lift the wheels of the aircraft off the ground. It is only necessary to lift the aircraft sufficiently to prevent a force caused by the reaction of the shock absorber.

Subtask 54-51-17-020-098-A

E. Removal of the Components
(1) Remove the fan cowl doors (Ref. AMM TASK 71-13-11-000-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR.
(2) Remove the thrust-reverser cowl doors (Ref. AMM TASK 78-32-11-000-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR.
(3) Remove the engine (Ref. AMM TASK 71-00-51-000-803).

Subtask 54-51-17-010-070-A

F. Removal of the Access Panels and Doors
(1) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position:
(a) For the left pylon, in zones 410 and 470
(b) For the right pylon, in zones 420 and 480.
(2) Remove the pylon-to-wing access panels and doors (Ref. AMM TASK 54-53-11-000-806):
(a) For the left pylon: 413ET 471AL 471BL 472AR
(b) For the right pylon: 423ET 481AL 482AR 482BR.

Subtask 54-51-17-020-094-A

G. Removal of the Electrical Connectors and the Rods

Electrical Connectors and Rods

(1) Disconnect electrical connectors 6HA1-A (6HA2-A) (18) and 6HA1-B (6HA2-B) (17) from the temperature sensors.
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Remove the nuts (16), the washers (2) and the bolts (3).
(4) Remove the clamps (9) that are installed on the rod (10).
(5) Remove the clamps (1).

WARNING: USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.

(6) Remove the cotter pins (4) and (13) and discard them.
(7) Remove the nuts (5) and the washers (6).
(8) Remove the bolts (8) and the sleeves (7).
(9) Remove the nuts (12) and the washers (11).
(10) Remove the bolts (15).
(11) Remove the rods (10) and (14).

Subtask 54-51-17-020-095-A

H. Disconnection of the Fuel/Defuel System Components
(1) Put a CONTAINER 3 L(3/4 USGAL) in position below the fuel connections.
(2) Disconnect the fuel recirculation check-valve from its connection adjacent RIB7 of the pylon box (Ref. AMM TASK 28-16-42-000-001).
(3) Disconnect the fuel line coupling from its connection adjacent to RIB5 of the pylon box. To do this:

Fuel System - Pylon-to-Wing Junction

(a) Remove the nuts (21) and the bolts (20) from the clamps (17).
(b) Disconnect the bonding straps (18), (19) and (23) from the clamps (17).
(c) Remove the clamps (17) from the pipe (22).
(d) Remove the nuts (15), the bolts (31), the washers (30) and the clamps (14).
(e) Disengage the sleeves (29) from the fuel pipe assemblies (32) and (33).
(f) Move the sleeves (29) on the pipe (22).
(g) Remove the pipe (22) from the fuel pipe assemblies (32) and (33). To do this:

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

1 Remove the lockwire from the connectors (28) and the nuts (16) and (27) and discard them.
2 Loosen the nuts (16) and (27).
3 Remove the nuts (16) and (27) and the connectors (28).
4 Remove the pipe (22) from the fuel pipe assemblies (32) and (33).
5 Remove the retaining rings (26) from the pipe (22) and discard them.
6 Discard the O-rings (24) and (25).
7 Put the PLUG-BLANKING in each disconnected line end.
(h) Remove the retaining rings (13) from the fuel pipe assemblies (32) and (33) and discard them.
(i) Remove the O-rings (11) and (12) from the fuel pipe assemblies (32) and (33). and discard them.
(j) Put blanking caps on the disconnected fuel pipe assemblies (32) and (33).

4. Procedure
Subtask 54-51-17-481-057-A

A. Installation of the Dynamometric Adaptor and Jack
(1) Install a 98D54403009000 DYNAMOMETRIC ADAPTOR (top subassembly) in position on the forward engine-to-pylon attach-fittings.
(2) Put the jack in position below the forward engine-to-pylon attach-fittings.
(3) Install the 98D54403009000 DYNAMOMETRIC ADAPTOR (bottom subassembly) on the jack and apply a force of 300 +100 kg or -100 kg (661.3866 +220.4622 lb or -220.4622 lb) in the top direction.

Subtask 54-51-17-020-093-A

WARNING: USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.

B. Removal of the Pylon-to-Wing Forward Attach-Fittings at RIB5

Pylon-to-Wing Forward Attach-Fittings at RIB5

NOTE: If the time necessary to complete this task is more than one hour, it is necessary to install the 98D54403000000 DUMMY SHACKLES-PYLON TO WING YOKES and the 98D54403001000 DUMMY SLEEVES-PYLON TO WING YOKES.

(1) Remove the cotter pins (11) and discard them.
(2) Lock the fail-safe pins (16) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(3) Remove the nuts (12) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(4) Remove the fail-safe pins (16).
(5) Release the tab washers (14).
(6) Lock the sleeves (15) with a special wrench from the 98D54503000001 PYLON R/I WRENCH SET and release the nuts (13).
(7) Remove the nuts (13) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(8) Remove the tab washers (14) and discard them.
(9) Remove the sleeves (15) with the 98D54003005001 PYLON SHAFT EXTRACTOR. Remove the sleeves at the bottom first.

NOTE: It is necessary to increase the force at the top continuously and equally until you can remove the sleeves.

(10) Remove the shackles (17).

[Rev.10 from 2021] 2026.04.01 02:00:42 UTC