Removal of the Pylons

TASK 54-50-00-000-001-A
Removal of the Pylons

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: BEFORE YOU OPEN PHC CIRCUIT BREAKERS 2DA1(2,3), OPEN PROBE HEATER CIRCUIT-BREAKERS 1DA1(2), 3DA1(2,3), 4DA1(2,3) AND 5DA1(2,3). IF YOU DO NOT OBEY THIS SEQUENCE: - THE PROBES WILL BECOME TOO HOT. - THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.

WARNING: MAKE SURE THAT YOU OPEN THE CIRCUIT BREAKERS AS FOLLOWS:

1JH, 2JH1 AND 3JH1 BEFORE 2KS1
1JH, 2JH2 AND 3JH2 BEFORE 2KS2.

IF YOU DO NOT OBEY THIS SEQUENCE, THERE IS A RISK OF ELECTROCUTION. THIS IS BECAUSE YOU WILL START CONTINUOUS IGNITION IF YOU OPEN CIRCUIT BREAKER 2KS1 OR 2KS2 FIRST.

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.

CAUTION: THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.

ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

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	1	CONTAINER 2 L (0.53 USGAL)
No specific	1	CONTAINER 5 L (1.32 USGAL)
No specific	3	CRANE HEIGHT 5 M (16FT), 1500 KG (3300 LB)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
98D54003000000	1	TROLLEY-PYLON R I
98D54003001000	1	STORAGE RIG
98D54003002000	1	GEAR-HOISTING PYLON
98D54003005000	1	PYLON SHAFT EXTRACTOR RIB4-RIB10
98D54503000000	1	PYLON REMOVAL-WRENCH

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
195BB, 197CB, 198CB, 423CL, 471AL, 471BL, 471CL, 475BL, 481AL, 481BL, 521BT, 521EB, 621BT, 621EB
413AR, 413CL, 413CR, 423AR, 423CR, 471AR, 471BR, 471CR, 471DL, 481AR, 481BR, 481CL, 481CR, 481DR, 485BR
413EL, 414AR, 414CR, 414FR, 423FL, 424AR, 424CR, 472AR, 472BR, 475CL, 482AR, 482BR, 482CR, 486BR, 486CR
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 05-57-00-200-001-A	Aircraft Stability
TASK 05-57-00-200-001-B	Aircraft Stability
TASK 05-57-00-200-001-C	Aircraft Stability
TASK 26-21-41-000-001-A	Removal of the Engine Fire-Extinguisher Bottle
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-25-00-650-001-A	Pressure Defuel
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 54-52-11-000-002-A	Removal of the Access Panels
TASK 54-52-11-000-002-B	Removal of the Access Panels
TASK 54-53-11-000-002-A	Removal of the Pylon-to-Wing Access Panels
TASK 54-53-11-000-002-B	Removal of the Pylon-to-Wing Access Panels
TASK 54-54-00-000-001-A	Removal of the Aft Fixed Fairing
TASK 54-54-00-000-001-A-01	Removal of the Aft Fixed Fairing
TASK 54-55-00-000-001-A	Removal of the Aft Movable Fairing
TASK 54-56-00-000-001-A	Removal of the Lower Fairing
TASK 54-56-00-000-002-A	Removal of the Lower Fairing
TASK 57-41-37-000-004-A	Removal of the Pressure Relief Panels
TASK 57-41-37-000-009-A	Removal of the Access Panel
TASK 71-00-00-000-040-A	Removal of the Power Plant
TASK 71-00-00-000-040-A-01	Removal of the Power Plant with the Engine Positioner TWW 75E
TASK 71-00-00-000-040-A-03	Removal of the Power Plant with Jacxson Tool
TASK 71-00-00-000-042-A	Removal of the Power Plant
TASK 71-00-00-000-042-A-01	Removal of the Power Plant with the Engine Positioner TWW 75E (MIAG)
TASK 71-00-00-000-042-A-03	Removal of the Power Plant with Jacxson Tool
TASK 71-00-20-000-040-A	Removal of the Power Plant
TASK 71-00-20-000-040-A-01	Removal of the Power Plant with the Engine Positioner TWW 75E (MIAG)
TASK 71-13-11-000-010-A	Removal of the Left Fan Cowl 437AL(447AL).
TASK 71-13-11-000-040-A	Removal of the Fan Cowl Doors
TASK 71-13-11-000-041-A	Removal of the Fan Cowl Doors
TASK 71-13-16-000-010-B	Removal of the Right Fan Cowl (438AR, 448AR)
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-32-01-000-010-A	Removal of the Left Thrust Reverser Half - Eng No. 1
TASK 78-32-02-000-010-A	Removal of the Left Thrust Reverser Half - Eng No. 2
TASK 78-32-03-000-010-A	Removal of the Right Thrust Reverser Half - Eng No. 1
TASK 78-32-04-000-010-A	Removal of the Right Thrust Reverser Half - Eng. No. 2
TASK 78-32-11-000-002-A	Removal of the Left or Right Half Door of Thrust Reverser
TASK 78-32-11-000-040-A	Removal of the Left or Right Half Door of Thrust Reverser
Aft Pressure/Suction/Case/Drain/Return Piping of the Green Hydraulic System ** ON A/C NOT FOR ALL
Aft Pressure/Suction/Case/Drain/Return Piping of the Green Hydraulic System ** ON A/C NOT FOR ALL
Aft Pressure/Suction/Case/Drain/Return Piping of the Yellow Hydraulic System
Fuel System - Recirculation Check-Valve Junction ** ON A/C NOT FOR ALL
Fuel System - Recirculation Check-Valve Junction ** ON A/C NOT FOR ALL
Fuel System - Recirculation Check-Valve Junction ** ON A/C NOT FOR ALL
Fuel System - Pylon-to-Wing Junction ** ON A/C NOT FOR ALL
Fuel System - Pylon-to-Wing Junction ** ON A/C NOT FOR ALL
Fuel System - Pylon-to-Wing Junction ** ON A/C NOT FOR ALL
Pipe Assembly
Pneumatic System - Bleed Air - Duct Junction ** ON A/C NOT FOR ALL
Pneumatic System - Bleed Air - Duct Junction ** ON A/C NOT FOR ALL
Pneumatic System - Bleed Air - Duct Junction ** ON A/C NOT FOR ALL
Electrical System - Feeder Cable Installation
Electrical System - Connection at RIB7A ** ON A/C NOT FOR ALL
Electrical System - Wing Closing-Rib Connections ** ON A/C NOT FOR ALL
Spigot at RIB5A - Electrical Bonding ** ON A/C NOT FOR ALL
Electrical System - Connection at RIB7A ** ON A/C NOT FOR ALL
Electrical System - Connection at RIB7A ** ON A/C NOT FOR ALL
Electrical System - Wing Closing-Rib Connections ** ON A/C NOT FOR ALL
Electrical System - Wing Closing-Rib Connections ** ON A/C NOT FOR ALL
Spigot at RIB5A - Electrical Bonding ** ON A/C NOT FOR ALL
Spigot at RIB5A - Electrical Bonding ** ON A/C NOT FOR ALL
Electrical System - Wing Closing-Rib Connections ** ON A/C NOT FOR ALL
Pylon-to-Wing Aft Attachment-Fitting ** ON A/C NOT FOR ALL
Pylon-to-Wing Aft Attachment-Fitting ** ON A/C NOT FOR ALL
Pylon-to-Wing Forward Attachment-Fitting ** ON A/C NOT FOR ALL
Pylon-to-Wing Forward Attachment-Fitting ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 54-50-00-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Put the WARNING NOTICE(S) in position in the cockpit to tell persons not to start engine 1(2).
(2) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
(3) On overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put the WARNING NOTICE(S) in position to tell persons not to use this pushbutton switch.
(4) On AIR COND panel 30VU:
(a) Make sure that the APU BLEED pushbutton switch is released (the ON legend is off).
(b) Put the WARNING NOTICE(S) in position to tell persons not to use this pushbutton switch.
(5) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Green and Yellow hydraulic systems:
(a) On the HYD section of overhead panel 40VU
(b) On Ground Service Panel (GSP) 197CB( 198CB).
(6) Put the WARNING NOTICE(S) in position on access door 195BB to tell persons not to pressurize the Green and Yellow hydraulic-systems reservoirs.
(7) On ENG panel 115VU:
(a) Make sure that the ENG MASTER control switch of engine 1(2) is set to the OFF position.
(b) Put the WARNING NOTICE(S) in position to tell persons not to start the engines.
(8) Obey the fuel safety procedure (Ref. AMM TASK 28-00-00-910-001).
(9) Defuel the applicable aircraft wing tank (Ref. AMM TASK 28-25-00-650-001).
(10) Obey the safety procedure of the hydraulic systems (Ref. AMM TASK 29-00-00-910-002).

Subtask 54-50-00-865-050-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/2/HP FUEL SOV	1KC2	A02
49VU	ENGINE/1/HP FUEL SOV	1KC1	A01
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
49VU	ANTI ICE/PROBES/PHC/1	2DA1	D03
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
121VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	R35
122VU	ANTI ICE/ENG/2	1DN2	W10
122VU	ANTI ICE/PROBES/PHC/3	2DA3	Y16
122VU	ANTI ICE/PROBES/2/TAT	1DA2	Y15
122VU	ANTI ICE/PROBES/2/PITOT	3DA2	Y14
122VU	ANTI ICE/PROBES/2/AOA	4DA2	Y13
122VU	ANTI ICE/PROBES/PHC/2	2DA2	Y12
122VU	ANTI ICE/PROBES/2/STATIC	5DA2	Y11
122VU	ANTI ICE/PROBES/3/PITOT	3DA3	Z16
122VU	ANTI ICE/PROBES/3/AOA	4DA3	Z15
122VU	ANTI ICE/PROBES/1/STATIC	5DA1	Z13
122VU	ANTI ICE/PROBES/1/TAT	1DA1	Z12
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03
FOR FIN: 1000EM1 (ENGINE1)
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/IGN/ENG1/SYS A BAT	2JH1	P39
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
FOR FIN: 1000EM2 (ENGINE2)
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/IGN/ENG2/SYS A BAT	2JH2	P40
121VU	ENGINE/ENG2/FADEC B	4KS2	Q40

Subtask 54-50-00-864-050-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Depressurize the hydraulic systems (Ref. AMM TASK 29-10-00-864-001) (Ref. AMM TASK 29-10-00-864-002) (Ref. AMM TASK 29-10-00-864-003).
(2) Depressurize the hydraulic reservoirs (Ref. AMM TASK 29-14-00-614-001).

Subtask 54-50-00-869-050-A ** ON A/C NOT FOR ALL

D. Make the aircraft stable (Ref. AMM TASK 05-57-00-200-001).

Subtask 54-50-00-941-055-A ** ON A/C NOT FOR ALL

E. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position:
(a) For the left pylon, at zone 470
(b) For the right pylon, at zone 480.

Subtask 54-50-00-040-054-A ** ON A/C NOT FOR ALL

F. 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 78-30-00-481-041).

Subtask 54-50-00-020-051-A ** ON A/C NOT FOR ALL

G. Removal of the Components
(1) Remove the fan cowl doors (Ref. AMM TASK 71-13-11-000-040) (Ref. AMM TASK 71-13-11-000-041):
(a) FOR [1000EM1] (ENGINE-1)

437AL and 438AR

(b) FOR [1000EM2] (ENGINE-2)

447AL and 448AR.

(2) Remove the thrust reverser cowl-doors (Ref. AMM TASK 78-32-11-000-002) (Ref. AMM TASK 78-32-11-000-040):
(a) FOR [1000EM1] (ENGINE-1)

451AL and 452AR

(b) FOR [1000EM2] (ENGINE-2)

461AL and 462AR.

(3) Remove the power plant (Ref. AMM TASK 71-00-00-000-040) (Ref. AMM TASK 71-00-00-000-042).

Subtask 54-50-00-040-054-B ** ON A/C NOT FOR ALL

H. 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 78-30-00-040-012).

Subtask 54-50-00-020-051-C ** ON A/C NOT FOR ALL

I. Removal of the Components
(1) Remove the fan cowl doors (Ref. AMM TASK 71-13-11-000-010) (Ref. AMM TASK 71-13-16-000-010):
(a) FOR [1000EM1] (ENGINE-1)

437AL and 438AR

(b) FOR [1000EM2] (ENGINE-2)

447AL and 448AR.

(2) Remove the left thrust-reverser cowl-door (Ref. AMM TASK 78-32-01-000-010) (Ref. AMM TASK 78-32-02-000-010):
(a) FOR [1000EM1] (ENGINE-1)

451AL

(b) FOR [1000EM2] (ENGINE-2)

461AL.

(3) Remove the right thrust-reverser cowl-door (Ref. AMM TASK 78-32-03-000-010) (Ref. AMM TASK 78-32-04-000-010):
(a) FOR [1000EM1] (ENGINE-1)

452AR

(b) FOR [1000EM2] (ENGINE-2)

462AR.

(4) Remove the power plant (Ref. AMM TASK 71-00-20-000-040).

Subtask 54-50-00-020-054-A ** ON A/C NOT FOR ALL

J. Removal of the Access Panels
(1) Remove the access panels (Ref. AMM TASK 54-52-11-000-002):
(a) For the left pylon: 414CR, 413EL and 414AR
(b) For the right pylon: 424CR, 423CL and 424AR.
(2) Remove the pylon-to-wing access panels (Ref. AMM TASK 54-53-11-000-002):
(a) For the left pylon: 471AL, 471BL, 471CL, 472BR, 472AR, 414FR, 475BL and 475CL
(b) For the right pylon: 482AR, 482BR, 482CR, 423FL, 481AL, 481BL, 486BR and 486CR.
(3) Remove the access panels (Ref. AMM TASK 57-41-37-000-009):
(a) For the left wing: 521BT
(b) For the right wing: 621BT.
(4) Remove the pressure relief panels (Ref. AMM TASK 57-41-37-000-004):
(a) For the left wing: 521EB
(b) For the right wing: 621EB.

Subtask 54-50-00-020-054-B ** ON A/C NOT FOR ALL

J. Removal of the Access Panels
(1) Remove the access panels (Ref. AMM TASK 54-52-11-000-002):
(a) For the left pylon: 413CL, 413CR and 413AR
(b) For the right pylon: 423CL, 423CR and 423AR.
(2) Remove the pylon-to-wing access panels (Ref. AMM TASK 54-53-11-000-002):
(a) For the left pylon: 471AL, 471BL, 471CL, 471DL, 471AR, 471BR, 471CR and 475BL
(b) For the right pylon: 481AL, 481BL, 481CL, 481AR, 481BR, 481CR, 481DR and 485BR.
(3) Remove the access panels (Ref. AMM TASK 57-41-37-000-009):
(a) For the left wing: 521BT
(b) For the right wing: 621BT.
(4) Remove the pressure relief panels (Ref. AMM TASK 57-41-37-000-004):
(a) For the left wing: 521EB
(b) For the right wing: 621EB.

Subtask 54-50-00-020-054-C ** ON A/C NOT FOR ALL

Subtask 54-50-00-020-052-A ** ON A/C NOT FOR ALL

K. Removal of the Fairings
(1) Remove the aft movable fairing (Ref. AMM TASK 54-55-00-000-001).
(2) Remove the lower fairing (Ref. AMM TASK 54-56-00-000-001).
(3) Remove the aft fixed fairing (Ref. AMM TASK 54-54-00-000-001).
(4) Put the CONTAINER 2 L (0.53 USGAL) in position below the disconnected hydraulic lines.

Subtask 54-50-00-020-052-C ** ON A/C NOT FOR ALL

K. Removal of the Fairings
(1) Remove the aft movable fairing (Ref. AMM TASK 54-55-00-000-001).
(2) Remove the lower fairing (Ref. AMM TASK 54-56-00-000-002).
(3) Remove the aft fixed fairing (Ref. AMM TASK 54-54-00-000-001).
(4) Put the CONTAINER 2 L (0.53 USGAL) in position below the disconnected hydraulic lines.

Subtask 54-50-00-020-053-A ** ON A/C NOT FOR ALL

L. Removal of the Engine Fire-Extinguisher Bottles
(1) Remove the engine fire-extinguisher bottles (Ref. AMM TASK 26-21-41-000-001).

4. Procedure

NOTE: This procedure is applicable to the left pylon. The data between parentheses are for the right pylon.

Subtask 54-50-00-020-055-A ** ON A/C NOT FOR ALL

A. Disconnection of the Fuel/Defuel System Components
(1) Disconnect the aft pressure/suction/case/drain/return piping from the Green hydraulic system:

Aft Pressure/Suction/Case/Drain/Return Piping of the Green Hydraulic System ** ON A/C NOT FOR ALL

(a) Disconnect the pump delivery hose (5) from the wing pipe (3).
(b) Disconnect the pump section hose (6) from the wing pipe (2).
(c) Disconnect the return hose (8) of the thrust-reverser hydraulic control-unit from the wing pipe (4).
(d) Disconnect the pump-case drain hose (7) from the wing pipe (1).
(e) Put the PLUG-BLANKING in each disconnected line end.
(2) Disconnect the aft pressure/suction/case/drain/return piping from the Yellow hydraulic system:

Aft Pressure/Suction/Case/Drain/Return Piping of the Yellow Hydraulic System ** ON A/C NOT FOR ALL

Fuel System - Recirculation Check-Valve Junction ** ON A/C NOT FOR ALL

(a) Put the CONTAINER 5 L (1.32 USGAL) below the fuel recirculation check-valve.
(b) Remove the nut (7) and the bolt (6).
(c) Disconnect the bonding strip (8).

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.

(d) Cut and discard the lockwire from the bolts (5).
(e) Remove the bolts (5), the washers (4) and the plates (2) and (1).
(f) Remove and discard the seal (3).
(g) Disengage the flange from fuel recirculation check-valve 122QM(123QM).
(4) Disconnect the fuel line coupling from RIB09:

Fuel System - Pylon-to-Wing Junction ** ON A/C NOT FOR ALL

(a) Remove the nut (6), the bolt (7) and the bonding braids (5).
(b) Remove the nuts (10), the bolts (9) and the clamps (1).
(c) Disengage the sleeves (8) from the clamp (16).
(d) Remove and discard the O-rings (15).

(e) Cut and discard the lockwire from the connector (12) and the nuts (2) and (13).
(f) Loosen the nuts (2) and (13).
(g) Remove the ring retainers (3) and (4).
(h) Disengage the connector (12) from the clamp (16).
(i) Remove and discard the O-rings (11) and (14).
(j) Remove the clamp (16).

(5) Removal of the pipe assembly (11):

Pipe Assembly ** ON A/C NOT FOR ALL

(a) Remove the nut (4) and the bolt (13).
(b) Remove the bolt (8), the washer (9) and the electrical bonding (10).
(c) Hold the pipe assembly (11) and remove the bolts (7), the washers (6) and the electrical bonding (5).
(d) Remove the pipe assembly (11) from the structure and disconnect the scavenge pipe (12) from the connection (15).
(e) Remove and discard the O-rings (2) from the pipe (1).
(f) Remove and discard the O-rings (3) from the pipe assembly (11).
(g) Remove and discard the O-rings (14) from the scavenge pipe (12).

Subtask 54-50-00-020-056-A ** ON A/C NOT FOR ALL

B. Disconnection of the Bleed Air Duct

Pneumatic System - Bleed Air - Duct Junction ** ON A/C NOT FOR ALL

(1) Disconnect temperature sensor 6HA2(6HA1) (21).
(2) Loosen the clamps (22) and (24) and remove the sleeve assembly (23).
(3) Put the PLUG-BLANKING in each disconnected line end.

Subtask 54-50-00-020-057-A ** ON A/C NOT FOR ALL

C. Disconnection of the Electrical Lines
(1) Disconnect the feeder cables and the tension regulator cable from the right side of the pylon:

Electrical System - Feeder Cable Installation ** ON A/C NOT FOR ALL

(a) Remove the bolts (37) and the washers (59).
(b) Remove the plate (38).
(c) Remove the nuts (39).
(d) Remove the bolts (41) and the washers (40).
(e) Disconnect the tension regulator cable (32) from engine electrical box 401VC.
(f) Remove the bolt (34) and the washer (33).
(g) Remove the nut (46).
(h) Remove the bolt (35) and the washer (47).
(i) Disengage the tension regulator cable (32) with its clamps (31) and (36) from the pylon secondary structure.
(j) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

(k) Cut and discard the lockwire from the plate (43).
(l) Remove the cover (42).
(m) Remove the nuts (44) and disconnect the feeder cables.
(n) Remove the nuts (51).
(o) Remove the washers (52), the bolts (53) and the brackets (58).
(p) Disengage the cable supports (54) along the right side of the pylon secondary structure.
(q) At RIB09, remove the bolts (57) and the nuts (55).
(r) Disengage the cable supports (56) from the pylon secondary structure.
(s) Disengage the cables from the pylon and put them on the wing.
(2) Disconnect the electrical connectors from RIB7A:

Electrical System - Connection at RIB7A ** ON A/C NOT FOR ALL

(a) For the left pylon: 471VC, 473VC and 475VC
(b) For the right pylon: 470VC, 472VC and 474VC.
(3) Disconnect the electrical connectors from the wing closing rib:

Electrical System - Wing Closing-Rib Connections ** ON A/C NOT FOR ALL

(a) Remove the bolts (73) and the washers (74).
(b) Disengage the plate (61).
(c) Remove the nut (70) and the washer (69).
(d) Remove the bolt (64) and the washer (65).
(e) Remove the clamp (63).
(f) Remove the spacer (64) and the washer (72).
(g) Remove the clamps (71) and (67) and the washer (68).
(h) Disconnect the electrical connectors and put them on the pylon:
1 For the left pylon: 411VC, 413VC, 415VC, 417VC, 419VC, 421VC and 423VC
2 For the right pylon: 410VC, 412VC, 414VC, 416VC, 418VC, 420VC and 422VC.
(i) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(4) Disconnect the bonding strips from the spigot at RIB5A:

Spigot at RIB5A - Electrical Bonding ** ON A/C NOT FOR ALL

(a) Remove the bolts (82) and the bonding strips (81) from the spigot fitting.

Subtask 54-50-00-020-057-B ** ON A/C NOT FOR ALL

C. Disconnection of the Electrical Lines
(1) Disconnect the feeder cables and the tension regulator cable from the right side of the pylon:

Electrical System - Feeder Cable Installation ** ON A/C NOT FOR ALL

(a) Remove the bolts (37) and the washers (59).
(b) Remove the plate (38).
(c) Remove the nuts (39).
(d) Remove the bolts (41) and the washers (40).
(e) Disconnect the tension regulator cable (32) from engine electrical box 401VC.
(f) Remove the bolt (34) and the washer (33).
(g) Remove the nut (46).
(h) Remove the washer (47) and the bolt (35).
(i) Disengage the tension regulator cable (32) with its clamps (31) and (36) from the pylon secondary structure.
(j) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

(k) Cut and discard the lockwire from the plate (43).
(l) Remove the cover (42).
(m) Remove the nuts (44) and disconnect the feeder cables.
(n) Remove the nuts (51).
(o) Remove the washers (52), the bolts (53) and the bracket (58).
(p) Disengage the cable supports (54) along the right side of the pylon secondary structure.
(q) At RIB09, remove the bolts (57) and the nuts (55).
(r) Disengage the cable supports (56) from the pylon secondary structure.
(s) Disengage the cables from the pylon and put them on the wing.
(2) Disconnect the electrical connectors from RIB7A:

Electrical System - Connection at RIB7A ** ON A/C NOT FOR ALL

(a) For the left pylon: 471VC, 473VC and 475VC
(b) For the right pylon: 470VC, 472VC and 474VC.
(3) Disconnect the electrical connectors from the wing closing rib:

Electrical System - Wing Closing-Rib Connections ** ON A/C NOT FOR ALL

(a) Remove the bolts (82) and the washers (81).
(b) Disengage the plate (61).
(c) Remove the nut (90) and the washer (91).
(d) Remove the bolt (94) and the washer (93).
(e) Remove the clamp (92).
(f) Remove the nut (89) and the washer (88).
(g) Remove the bolt (83) and the washer (84).
(h) Remove the clamp (85).
(i) Remove the spacer (86).
(j) Remove the clamp (87).
(k) Disconnect the electrical connectors and put them on the pylon:
1 For the left pylon: 411VC, 413VC, 415VC, 417VC, 419VC, 421VC and 423VC
2 For the right pylon: 410VC, 412VC, 414VC, 416VC, 418VC, 420VC and 422VC.
(l) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(4) Disconnect the bonding strips from the spigot at RIB5A:

Spigot at RIB5A - Electrical Bonding ** ON A/C NOT FOR ALL

(a) Remove the bolts (82) and the bonding strips (81) from the spigot fitting.

Subtask 54-50-00-020-057-C ** ON A/C NOT FOR ALL

C. Disconnection of the Electrical Lines
(1) Disconnect the feeder cables and the tension regulator cable from the right side of the pylon:

Electrical System - Feeder Cable Installation ** ON A/C NOT FOR ALL

(a) Remove the bolts (37) and the washers (59).
(b) Remove the plate (38).
(c) Remove the nuts (39).
(d) Remove the bolts (41) and the washers (40).
(e) Disconnect the tension regulator cable (32) from engine electrical box 401VC.
(f) Remove the bolt (34) and the washer (33).
(g) Remove the nut (46).
(h) Remove the washer (47) and the bolt (35).
(i) Disengage the tension regulator cable (32) with its clamps (31) and (36) from the pylon secondary structure.
(j) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

(k) Cut and discard the lockwire from the plate (43).
(l) Remove the cover (42).
(m) Remove the nuts (44) and disconnect the feeder cables.
(n) Remove the nuts (51).
(o) Remove the washers (52), the bolts (53) and the bracket (58).
(p) Disengage the cable supports (54) along the right side of the pylon secondary structure.
(q) At RIB09, remove the bolts (57) and the nuts (55)
(r) Disengage the cable supports (56) from the pylon secondary structure.
(s) Disengage the cables from the pylon and put them on the wing.
(2) Disconnect the electrical connectors from RIB7A:

Electrical System - Connection at RIB7A ** ON A/C NOT FOR ALL

(a) For the left pylon: 471VC, 473VC and 475VC
(b) For the right pylon: 470VC, 472VC and 474VC.
(3) Disconnect the electrical connectors from the wing closing rib:

Electrical System - Wing Closing-Rib Connections ** ON A/C NOT FOR ALL

(a) Remove the bolts (64) and the washers (63).
(b) Disengage the plate (61).
(c) Remove the nut (71) and the washer (72).
(d) Remove the bolt (74).
(e) Remove the clamp (73).
(f) Remove the nut (70) and the washer (69).
(g) Remove the bolt (65).
(h) Remove the clamp (66).
(i) Remove the spacer (67).
(j) Remove the clamp (68).
(k) Disconnect the electrical connectors and put them on the pylon:
1 For the left pylon: 411VC, 413VC, 415VC, 417VC, 419VC, 421VC and 423VC
2 For the right pylon: 410VC, 412VC, 414VC, 416VC, 418VC, 420VC and 422VC.
(l) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(4) Disconnect the bonding strips from the spigot at RIB5A:

Spigot at RIB5A - Electrical Bonding ** ON A/C NOT FOR ALL

(a) Remove the bolts (82) and the bonding strips (81) from the spigot fitting.

Subtask 54-50-00-480-050-A ** ON A/C NOT FOR ALL

D. Installation of the Pylon Removal/Installation Trolley
(1) Put the CRANE HEIGHT 5 M (16FT), 1500 KG (3300 LB) in position below the pylon.
(2) Attach the 98D54003000000 TROLLEY-PYLON R I to the crane.
(3) Put the 98D54003000000 TROLLEY-PYLON R I below the pylon.
(4) Attach the 98D54003000000 TROLLEY-PYLON R I to the RIB1 forward engine-to-pylon attachment-fitting and the RIB8 engine-to-pylon attachment-fitting.

Subtask 54-50-00-020-050-A ** ON A/C NOT FOR ALL

E. Disconnection of the Pylon-to-Wing Attachment-Fittings

NOTE: The pylon-to-wing attachment-fittings are disassembled at the bottom side.

(1) During the removal of the pins with threads and sleeves with the CRANE HEIGHT 5 M (16FT), 1500 KG (3300 LB), gradually apply a vertical force on the pylon. Apply this force until it is possible to remove them.
(2) Remove the aft threaded pins and sleeves from RIB10:

Pylon-to-Wing Aft Attachment-Fitting ** ON A/C NOT FOR ALL

(a) Remove and discard the cotter pins (106).
(b) Lock the bolts (101) with a pin wrench from the 98D54503000000 PYLON REMOVAL-WRENCH.
(c) Remove the nuts (105) with a pin wrench from the 98D54503000000 PYLON REMOVAL-WRENCH.
(d) Remove the bolts (101).
(e) Release the nuts (104).
(f) Lock the sleeves (100) with a special wrench from the 98D54503000000 PYLON REMOVAL-WRENCH.
(g) Remove the nuts (104) with a pin wrench from the 98D54503000000 PYLON REMOVAL-WRENCH.
(h) Remove and discard the lock washers (103).
(i) Remove the sleeves (100) with the 98D54003005000 PYLON SHAFT EXTRACTOR RIB4-RIB10.
(3) Remove the forward threaded pins and sleeves from RIB4:

Pylon-to-Wing Forward Attachment-Fitting ** ON A/C NOT FOR ALL

(a) Remove the cotter pin (96) and discard it.
(b) Lock the bolt (91) with a pin wrench from the 98D54503000000 PYLON REMOVAL-WRENCH.
(c) Remove the nut (95) with a pin wrench from the 98D54503000000 PYLON REMOVAL-WRENCH.
(d) Remove the bolt (91).
(e) Release the nut (94).
(f) Lock the sleeve (92) with a special wrench from the 98D54503000000 PYLON REMOVAL-WRENCH.
(g) Remove the nut (94) with a pin wrench from the 98D54503000000 PYLON REMOVAL-WRENCH
(h) Remove and discard the lock washer (93).
(i) Remove the sleeve (92) with the 98D54003005000 PYLON SHAFT EXTRACTOR RIB4-RIB10. Remove the sleeve from the bottom first.

Subtask 54-50-00-020-058-A ** ON A/C NOT FOR ALL

F. Removal of the Pylon

CAUTION: WHEN YOU REMOVE THE PYLON, MAKE SURE THAT THERE IS NO FRICTION OR STRAIN AT THE SHACKLES AND THE SPIGOT FITTING. FRICTION CAN CAUSE DAMAGE TO THE SHACKLES AND THE SPIGOT FITTING.

(1) Lower the pylon and move it away from the wing with the CRANE HEIGHT 5 M (16FT), 1500 KG (3300 LB).
(2) Put the pylon and the 98D54003000000 TROLLEY-PYLON R I on the ground.
(3) Install the 98D54003002000 GEAR-HOISTING PYLON on the shackles of the forward pylon-to-wing attachment fittings.
(4) Attach the 98D54003003001 BEAM-LIFTING AT RIB4 to the 98D54003002000 GEAR-HOISTING PYLON with the CRANE HEIGHT 5 M (16FT), 1500 KG (3300 LB).

NOTE: The storage rig includes the lifting beam. They are used together and supplied at the same time.

(5) Remove the 98D54003000000 TROLLEY-PYLON R I from the pylon.
(6) Put the pylon on the 98D54003001000 STORAGE RIG.
(7) Remove the 98D54003002000 GEAR-HOISTING PYLON and the 98D54003003001 BEAM-LIFTING AT RIB4 from the pylon and the CRANE HEIGHT 5 M (16FT), 1500 KG (3300 LB).

[Rev.10 from 2021] 2026.04.01 01:58:53 UTC