Removal of the Pylons

TASK 54-50-00-000-803-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: 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.

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES. WORK ON THE HYDRAULIC SYSTEMS CAN BE DANGEROUS.

WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.

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: 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 2 L (0.53 USGAL)
No specific	AR	CONTAINER 3 L(3/4 USGAL)
No specific	1	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)
98A54003117000	1	TROLLEY-PYLON STORAGE
98D54003005001	1	PYLON SHAFT EXTRACTOR
98D54403006000	1	R/I PYLON
98D54403007000	1	PYLON HANDLING FOR PW AND CFM
98D54503000001	1	PYLON R/I WRENCH SET

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
195BB, 413ET, 414AR, 414BR, 423ET, 424AR, 424BR, 424CR, 471AL, 471BL, 471CL, 472AR, 472BR, 481AL, 481BL, 482AR, 482BR, 482CR, 521BT, 521EB, 621BT, 621EB
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 26-21-41-000-001-F	Removal of the Engine Fire-Extinguisher Bottle
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 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 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 54-52-11-000-807-A	Removal of the Access Skin Panels
TASK 54-53-11-000-806-A	Removal of the Pylon-to-Wing Access Panels and Doors
TASK 54-54-00-000-804-A	Removal of the Rear Pylon Fairing (RPF)
TASK 54-56-00-000-803-A	Removal of the Aft Pylon Fairing (APF)
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 71-00-51-000-803-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
Fuel System - Pylon-to-Wing Junction
Pneumatic System - Bleed-Air Duct Junction
Hydraulic Lines - Pylon-to-Wing Junction
Electrical System - Feeder Cable
Electrical System - Electrical Connectors
Electrical System - Connections at the Wing Closing Rib
Spigot at RIB6 - Electrical Bonding
Pylon-to-Wing Aft Attach-Fitting at RIB10
Pylon-to-Wing Forward Attach-Fitting at RIB5

3. Job Set-up
Subtask 54-50-00-941-069-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) On the overhead panel, on AIR COND panel 30VU:
(a) Make sure that the APU BLEED pushbutton switch is released (the ON legend is off).
(b) Make sure that the ENG 1(2) BLEED pushbutton is released (the OFF legend is on).
(c) Put a WARNING NOTICE(S) in position to tell persons not to push the APU BLEED and ENG 1(2) BLEED pushbutton switches.
(4) On the center pedestal, on FLAPS panel 115VU:
(a) Make sure that the flap and slat control lever is in the "0" (fully retracted) position.
(b) Put a WARNING NOTICE(S) in position in the cockpit to tell persons not to move the slat and flap control lever.
(5) Obey the safety procedure of the hydraulic system (Ref. AMM TASK 29-00-00-910-002).
(6) On the overhead panel, on the HYD section of control panel 40VU:
(a) Make sure that the ENG 1(2) PUMP pushbutton switches are released (the OFF legend is on).
(b) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic applicable system:
1 On HYD/FUEL panel 40VU
2 On the ground service panel of the applicable hydraulic system.
(7) Put a WARNING NOTICE(S) in position on access door 195BB to tell persons not to pressurize the reservoirs of the applicable hydraulic system.
(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).

Subtask 54-50-00-869-061-A

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

Subtask 54-50-00-865-062-A

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

1JH AND 3JH1 BEFORE 2KS1
1JH 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.

WARNING: MAKE SURE THAT THE PROBE HEATER AND WINDOW HEATER CIRCUIT-BREAKERS ARE OPEN BEFORE YOU OPEN THE PHC AND WHC CIRCUIT BREAKERS. IF YOU DO NOT OBEY THIS SEQUENCE:

THE PROBES WILL BECOME TOO HOT.
THIS CAN CAUSE INJURY TO MAINTENANCE PERSONNEL AND/OR DAMAGE TO EQUIPMENT.

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
49VU	ANTI ICE/PROBES/PHC/1	2DA1	D03
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
49VU	ANTI ICE/RAIN/RPLNT/CAPT	1DB1	D01
49VU	COM/CVR/SPLY	23RK	E14
49VU	COM/CVR/CTL	26RK	E13
121VU	RCDR/DFDR	7TU	K39
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N31
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B	2WE1	Q43
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A	1WE1	Q42
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B	2WE2	Q41
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A	1WE2	Q40
122VU	ANTI ICE/WINDOWS/R	4DG2	W14
122VU	ANTI ICE/WHC/2	5DG2	W13
122VU	ANTI ICE/RAIN/RPLNT/F/O	1DB2	W11
122VU	ANTI ICE/ENG/2	1DN2	W10
122VU	ANTI ICE/WINDOWS/L	4DG1	X14
122VU	ANTI ICE/WHC/1	5DG1	X13
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/3/STATIC	5DA3	Z14
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: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
49VU	ENGINE/1/FIRE DET/LOOP A	7WD1	A06
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
49VU	ENGINE/1/HP FUEL SOV	1KC1	A01
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/ENG1/FIRE DET/LOOP B	8WD1	Q38
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
122VU	ELEC/GCU/1	2XU1	T26
122VU	ANTI ICE/ENG/1	1DN1	X10
122VU	ANTI ICE/PROBES/1/TAT	1DA1	Z12
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
49VU	ENGINE/2/FIRE DET/LOOP B	8WD2	A07
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
49VU	ENGINE/2/HP FUEL SOV	1KC2	A02
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/ENG2/FIRE DET/LOOP A	7WD2	Q39
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41
122VU	ELEC/GCU/2	2XU2	T27
122VU	ANTI ICE/ENG/2	1DN2	W10

Subtask 54-50-00-040-057-A

D. 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 54-50-00-864-054-A

E. Depressurization of the Hydraulic Systems

WARNING: MAKE SURE YOU DEPRESSURIZED THE HYDRAULIC SYSTEM. IF YOU LOOSEN A HYDRAULIC TUBE FITTING WHEN THERE IS PRESSURE IN THE HYDRAULIC SYSTEM, YOU CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.

(1) Depressurize the applicable hydraulic system (Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-10-00-864-002).

NOTE: 4020KM1 (ENG1) supplies the GREEN hydraulic system and 4020KM2 (ENG2) supplies the YELLOW hydraulic system.

(2) Depressurize the reservoirs of the applicable hydraulic system (Ref. AMM TASK 29-14-00-614-001).

Subtask 54-50-00-020-088-A

F. 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 54-50-00-010-059-A

G. Get Access
(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.

Subtask 54-50-00-020-089-A

H. Removal of the Access Panels and Doors
(1) Remove the access skin panels (Ref. AMM TASK 54-52-11-000-807):
(a) For the left pylon: 414AR and 414BR
(b) For the right pylon: 424AR and 424BR.
(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 471CL 472AR and 472BR
(b) For the right pylon: 423ET 481AL 481BL 424CR 482AR 482BR and 482CR.
(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 54-50-00-020-090-A

I. Removal of the Fairings
(1) Remove the Rear Pylon Fairing (RPF) (Ref. AMM TASK 54-54-00-000-804).
(2) Remove the Aft Pylon Fairing (APF) (Ref. AMM TASK 54-56-00-000-803).

Subtask 54-50-00-020-091-A

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

4. Procedure
Subtask 54-50-00-020-092-A

A. 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 to 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 lockwires 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).

Subtask 54-50-00-020-093-A

B. Disconnection of the Bleed Air Duct

Pneumatic System - Bleed-Air Duct Junction

(1) Disconnect electrical connectors 6HA1-A (6HA2-A) (23) and 6HA1-B (6HA2-B) (22) from the temperature sensors.
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Remove the insulation muff from the bleed air duct.
(4) Loosen the clamps (24) and (26).
(5) Remove the sleeve assembly (25) with the clamps (24) and (26) from the bleed air duct.
(6) Remove the seal (27) and discard it.
(7) Put the PLUG-BLANKING in each disconnected line end.

Subtask 54-50-00-020-102-A

C. Disconnection of the Hydraulic Lines

Hydraulic Lines - Pylon-to-Wing Junction

(1) Put a CONTAINER 2 L (0.53 USGAL) in position below the hydraulic connections.
(2) Disconnect the hydraulic connectors (1), (2), (3), (4) and (5) from their connections.
(3) Put blanking plugs on the disconnected hydraulic ports.
(4) Disengage the case drain line (22) and the pressure reservoir line (23) from the wing structure. To do this, remove:
(a) The screws (21) and the washers (20)
(b) The clamp blocks (24) and the deflector (19).
(5) Disengage the return line (17) from the wing structure. To do this, remove:
(a) The screws (14) and the washers (15)
(b) The clamp (16) from the bracket (8).
(6) Disengage the pressure line (18) and the suction line (10) from the wing structure. To do this, remove:
(a) The screws (12) and the washers (13)
(b) The screws (6) and the washers (7)
(c) The bracket (8), the clamp (11) and the bracket (9).
(7) Put the PLUG-BLANKING in each disconnected line end.

Subtask 54-50-00-020-094-A

D. Disconnection of the Electrical Lines
(1) Disconnect the feeder cables from the right side of the forward fairing structure:

Electrical System - Feeder Cable

CAUTION: MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. IF YOU MAKE AN ERROR WHEN YOU CONNECT THE WIRES YOU WILL CAUSE DAMAGE TO EQUIPMENT.

(a) Remove the lockwires from terminal block 400VT1 (400VT2) (45) and discard them.
(b) Remove the covers (44).
(c) Remove the nuts (47) and the washers (46).
(d) Make match marks on all electrical feeders before you disconnect them.
(e) Disconnect the electrical feeders from terminal block 400VT1 (400VT2) (45).

CAUTION: WHEN YOU REMOVE THE SCREWS, MAKE SURE THAT YOU RECORD THE CORRECT POSITION OF EACH OF THEM. THE SCREWS HAVE DIFFERENT LENGTHS.

(f) Remove the cable supports (43), (36) and (31) from the right side of the forward fairing structure:
1 Cable supports (43):
a Remove the screws (40) and the washers (41).
b Remove the clamps (42).
c Remove the cable supports (43) from the right side of the forward fairing structure.
2 Cable supports (36):
a Remove the nuts (35) and (37).
b Remove the screws (33) and (39) and the washers (34) and (38).
c Remove the cable supports (36) from the right side of the forward fairing structure.
3 Cable support (31):
a Remove the screws (28) and the washers (29).
b Remove the clamps (30).
c Remove the cable supports (31) with the clampblock plates (32) from the right side of the forward fairing structure.
(g) Disconnect connector 424VC1A (424VC2A).
(h) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(i) Disengage the cables from the pylon and put them on the wing.
(2) Disconnect the electrical connectors from their connections adjacent to RIB8 of the pylon box:

Electrical System - Electrical Connectors

(a) For the left pylon:
471VCA, 473VCA and 475VCA
(b) For the right pylon:
470VCA, 472VCA and 474VCA.
(3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(4) Disconnect the electrical connectors from their connections at the wing closing rib:

Electrical System - Connections at the Wing Closing Rib

CAUTION: WHEN YOU REMOVE THE SCREWS, MAKE SURE THAT YOU RECORD THE CORRECT POSITION OF EACH OF THEM. THE SCREWS HAVE DIFFERENT LENGTHS.

(a) Remove the bolts (49) and the washers (48).
(b) Disengage the plate (50).
(c) Remove the nut (58) and the washer (59).
(d) Remove the screw (62) and the washer (61).
(e) Remove the clamp (60).
(f) Remove the nut (57) and the washer (56).
(g) Remove the screw (51) and the washer (52).
(h) Remove the clamp (53), the spacer (54) and the clamp (55).
(i) Disconnect the electrical connectors from their connections at the wing closing rib and put them on the pylon:
1 For the left pylon:
411VCA, 413VCA, 415VCA, 419VCA, 421VCA and 423VCA
2 For the right pylon:
410VCA, 412VCA, 414VCA, 418VCA, 420VCA and 422VCA.
(j) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

Subtask 54-50-00-020-095-A

E. Disconnection of the Bonding Straps of the Spigot at RIB6

Spigot at RIB6 - Electrical Bonding

(1) Remove the bolts (64).
(2) Disconnect the bonding straps (63) from the bonding brackets that are installed on the pylon box at RIB6.

Subtask 54-50-00-480-058-A

F. Installation of the Pylon Removal/Installation Trolley
(1) Put a CRANE HEIGHT 5 M (16FT), 1500 KG (3300 LB) in position.
(2) Attach the 98D54403006000 R/I PYLON to the CRANE HEIGHT 5 M (16FT), 1500 KG (3300 LB).
(3) Put the 98D54403006000 R/I PYLON below the pylon.
(4) Attach the 98D54403006000 R/I PYLON to the forward engine-to-pylon attach-fittings and to the aft engine-to-pylon attach fittings (RIB5).

Subtask 54-50-00-020-096-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.

G. Disconnection of the Pylon-to-Wing Attach-Fittings

NOTE: You disassemble the pylon-to-wing attach-fittings at their bottom attachment.

NOTE: During the removal of the sleeves with the crane, you gradually apply a vertical force on the pylon. You apply this force until it is possible to remove the sleeves.

(1) Remove the aft fail-safe pins and the sleeves at RIB10. To do this:

Pylon-to-Wing Aft Attach-Fitting at RIB10

(a) Remove the cotter pins (70) and discard them.
(b) Lock the fail-safe pins (66) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(c) Remove the nuts (69) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(d) Remove the fail-safe pins (66).
(e) Release the tab washers (67).
(f) Lock the sleeves (65) with a special wrench from the 98D54503000001 PYLON R/I WRENCH SET and release the nuts (68).
(g) Remove the nuts (68) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(h) Remove the tab washers (67) and discard them.
(i) Remove the sleeves (65) with the 98D54003005001 PYLON SHAFT EXTRACTOR.
(2) Remove the forward fail-safe pins and the sleeves at RIB5. To do this:

Pylon-to-Wing Forward Attach-Fitting at RIB5

(a) Remove the cotter pins (76) and discard them.
(b) Lock the fail-safe pins (71) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(c) Remove the nuts (75) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(d) Remove the fail-safe pins (71).
(e) Release the tab washers (73).
(f) Lock the sleeves (72) with a special wrench from the 98D54503000001 PYLON R/I WRENCH SET and release the nuts (74).
(g) Remove the nuts (74) with a pin wrench from the 98D54503000000 PYLON REMOVAL-WRENCH.
(h) Remove the tab washers (73) and discard them.
(i) Remove the sleeves (72) with the 98D54003005001 PYLON SHAFT EXTRACTOR.

Subtask 54-50-00-020-097-A

H. 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 98D54403006000 R/I PYLON on the ground.
(3) Install the 98D54403007000 PYLON HANDLING FOR PW AND CFM on the pylon and the CRANE HEIGHT 5 M (16FT), 1500 KG (3300 LB).
(4) Remove the 98D54403006000 R/I PYLON from the pylon.
(5) Put the pylon on the 98A54003117000 TROLLEY-PYLON STORAGE.
(6) Remove the 98D54403007000 PYLON HANDLING FOR PW AND CFM from the pylon and the CRANE HEIGHT 5 M (16FT), 1500 KG (3300 LB).

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