Removal of the Pylons

TASK 54-50-00-000-802-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 ** ON A/C NOT FOR ALL
FIN: 4020KM2 ** 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	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, 413BT, 413DL, 413ET, 414BR, 414CR, 423BT, 423ET, 424BR, 424CR, 424DR, 471AL, 471BL, 471CL, 472AR, 472BR, 481AL, 481BL, 482AR, 482BR, 482CR, 521BT, 521EB, 621BT, 621EB
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 05-57-00-200-001-A	Aircraft Stability
TASK 05-57-00-200-001-B	Aircraft Stability
TASK 26-21-41-000-001-E	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 54-52-11-000-805-A	Removal of the Access Skin Panels
TASK 54-53-11-000-804-A	Removal of the Pylon-to-Wing Access Panels and Doors
TASK 54-54-00-000-802-A	Removal of the Rear Pylon Fairing (RPF)
TASK 54-56-00-000-802-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 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 71-00-51-000-802-A	Removal of the Power Plant (Bootstrap Method)
TASK 71-00-51-000-802-A-01	Removal of the Power Plant (JacXson Method)
TASK 71-13-10-000-801-A	Removal of the Left Engine Fan Cowl Door
TASK 71-13-20-000-801-A	Removal of the Right Fan Cowl Door
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
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
Bonding Straps of the Spigot
Pylon-to-Wing Aft Attach-Fitting at RIB10
Pylon-to-Wing Forward Attach-Fitting at RIB5
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
TASK 78-32-01-000-802-A	Removal of the Left Thrust Reverser Half - Engine 1
TASK 78-32-02-000-802-A	Removal of the Right Thrust Reverser Half - Engine 1
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
TASK 78-32-01-000-803-A	Removal of the Left Thrust Reverser Half - Engine 2
TASK 78-32-02-000-803-A	Removal of the Right Thrust Reverser Half - Engine 2

3. Job Set-up
Subtask 54-50-00-941-067-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
(2) 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 switch is released (the OFF legend is on).
(c) Put the WARNING NOTICE(S) in position to tell persons not to push the APU BLEED and ENG 1(2) BLEED pushbutton switches.
(3) 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 the WARNING NOTICE(S) in position in the cockpit to tell persons not to move the slat and flap control lever.
(4) Obey the safety procedure of the hydraulic system (Ref. AMM TASK 29-00-00-910-002).
(5) On the overhead panel, on the HYD section of control panel 40VU:
(a) Make sure that the ENG 1(2) PUMP pushbutton switch is released (the OFF legend is on).
(b) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the applicable hydraulic system:
1 On HYD/FUEL panel 40VU
2 On the Ground Service Panel (GSP) of the applicable hydraulic system.
(6) Put the WARNING NOTICE(S) in position on access door 195BB to tell persons not to pressurize the reservoirs of the applicable hydraulic system.
(7) Obey the fuel safety procedure (Ref. AMM TASK 28-00-00-910-001).
(8) Defuel the applicable aircraft wing tank (Ref. AMM TASK 28-25-00-650-001).

Subtask 54-50-00-869-060-A ** ON A/C NOT FOR ALL

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

Subtask 54-50-00-865-059-A ** ON A/C NOT FOR ALL

WARNING: MAKE SURE THAT CIRCUIT BREAKERS 1QG (2QG) AND 3QG (4QG) ARE OPEN BEFORE YOU OPEN CIRCUIT BREAKER 1KC1 (1KC2). IF YOU DO NOT OBEY THIS INSTRUCTION, THE LP FUEL VALVE WILL OPEN AND THERE IS A RISK THAT FUEL WILL FLOW OUT.

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 NOT FOR 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
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B	2WE1	Q44
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A	1WE1	Q43
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B	2WE2	Q42
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A	1WE2	Q41
** ON A/C NOT FOR ALL
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
** ON A/C NOT FOR ALL
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/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
123VU	ANTI ICE/L/WHSLD	1DG1	AF10
123VU	ANTI ICE/R/WHSLD	1DG2	AF03
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENG 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	AIR BLEED/ENG 1/CTL	2HA1	D11
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
** ON A/C NOT FOR ALL
121VU	DCV B/ENG1 PWR SUPPLY	103KS1	K44
121VU	DCV A/ENG1 PWR SUPPLY	102KS1	K42
121VU	ENG1/REV/LOCK	1EG1	N44
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
121VU	ICU A/ENG1 PWR SUPPLY	22KS1	R39
** ON A/C NOT FOR ALL
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
121VU	OIL/PRESS/ENG1	10KC1	N40
121VU	PHMU/ENG1	95KS1	P44
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/LATCH DOORS & SLATS/ENG1	93KS1	P39
121VU	ENGINE/ENG1/FIRE DET/LOOP B	8WD1	Q38
121VU	ICU B/ENG1 PWR SUPPLY	101KS1	R42
** ON A/C NOT FOR ALL
121VU	DCV A/ENG1 PWR SUPPLY	102KS1	N44
121VU	DCV B/ENG1 PWR SUPPLY	103KS1	Q44
121VU	ENG1/REV/LOCK	1EG1	R44
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
121VU	ICU A/ENG1 PWR SUPPLY	22KS1	R38
** ON A/C NOT FOR ALL
122VU	ELEC/GCU/1	2XU1	T26
122VU	ELEC/IDG1/DISC	1XT	T24
122VU	ANTI ICE/ENG/1	1DN1	X10
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENG 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
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
** ON A/C NOT FOR ALL
121VU	DCV B/ENG2 PWR SUPPLY	103KS2	K45
121VU	DCV A/ENG2 PWR SUPPLY	102KS2	K43
121VU	ENG2/REV/LOCK	1EG2	N45
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	Q40
121VU	ICU A/ENG2 PWR SUPPLY	22KS2	R40
** ON A/C NOT FOR ALL
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26
121VU	OIL/PRESS/ENG2	10KC2	N42
121VU	PHMU/ENG2	95KS2	P45
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/LATCH DOORS & SLATS/ENG2	93KS2	P40
121VU	ENGINE/ENG2/FIRE DET/LOOP A	7WD2	Q39
121VU	HYDRAULIC/Y HYD/PUMP ENG2/CTL	3701GD	Q36
121VU	ICU B/ENG2 PWR SUPPLY	101KS2	R43
** ON A/C NOT FOR ALL
121VU	DCV A/ENG2 PWR SUPPLY	102KS2	N45
121VU	DCV B/ENG2 PWR SUPPLY	103KS2	Q45
121VU	ENG2/REV/LOCK	1EG2	R45
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41
121VU	ICU A/ENG2 PWR SUPPLY	22KS2	R39
** ON A/C NOT FOR ALL
122VU	ELEC/GCU/2	2XU2	T27
122VU	ELEC/IDG2/DISC	2XT	T25
122VU	ANTI ICE/ENG/2	1DN2	W10
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22
** ON A/C NOT FOR ALL
FOR FIN: 101RH (DIRCIDS, 1)
49VU	COM/CIDS/DIR ESS/1	150RH	G01
** ON A/C NOT FOR ALL
49VU	AIR COND/CIDS/SDF/DIR1 ESS	15WH	C05
** ON A/C NOT FOR ALL
49VU	COM NAV/CIDS/DIR1 ESS	150RH	G01
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M06
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR1 NORM	151RH	M05
** ON A/C NOT FOR ALL
122VU	AIR COND/CIDS/SDF/DIR NORM/1	17WH	T17
** ON A/C NOT FOR ALL
FOR FIN: 102RH (DIRCIDS, 2)
49VU	COM/CIDS/DIR ESS/2	157RH	G02
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DIR ESS/1	150RH	G01
** ON A/C NOT FOR ALL
49VU	AIR COND/CIDS/SDF/DIR2 ESS	18WH	C06
** ON A/C NOT FOR ALL
49VU	COM DIR ESS/2	157RH	G02
** ON A/C NOT FOR ALL
49VU	COM NAV/CIDS/DIR2 ESS	157RH	G02
49VU	COM NAV/CIDS/DIR1 ESS	150RH	G01
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M06
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M07
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M06
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR2 NORM	156RH	M06
121VU	COM NAV/CIDS/DIR1 NORM	151RH	M05
** ON A/C NOT FOR ALL
122VU	AIR COND/CIDS/SDF/DIR NORM/2	14WH	T18

Subtask 54-50-00-864-053-A ** ON A/C NOT FOR ALL

D. 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 54-50-00-040-063-A ** ON A/C NOT FOR ALL

E. 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 78-30-00-040-805).

Subtask 54-50-00-020-077-A ** ON A/C NOT FOR ALL

F. Removal of the Components
(1) Remove the fan cowl doors (Ref. AMM TASK 71-13-10-000-801) (Ref. AMM TASK 71-13-20-000-801):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)

437AL and 438AR.

(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)

447AL and 448AR.

(2) Remove the thrust reversers:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)

451AL and 452AR (Ref. AMM TASK 78-32-01-000-802) and (Ref. AMM TASK 78-32-02-000-802).

(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)

461AL and 462AR (Ref. AMM TASK 78-32-01-000-803) and (Ref. AMM TASK 78-32-02-000-803).

(3) Remove the power plant (Ref. AMM TASK 71-00-51-000-802).

Subtask 54-50-00-010-057-A ** ON A/C NOT FOR ALL

G. Get Access
(1) Put the 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 54-50-00-020-078-A ** ON A/C NOT FOR ALL

H. Removal of the Access Panels and Doors
(1) Remove the access skin panels (Ref. AMM TASK 54-52-11-000-805):
(a) For the left pylon: 413BT 414BR and 414CR
(b) For the right pylon: 423BT 424BR and 424CR.
(2) Remove the pylon-to-wing access panels and doors (Ref. AMM TASK 54-53-11-000-804):
(a) For the left pylon: 413ET 413DL 471AL 471BL 471CL 472AR and 472BR
(b) For the right pylon: 423ET 424DR 482AR 482BR 482CR 481BL and 481AL.
(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 54-50-00-020-079-A ** ON A/C NOT FOR ALL

I. Removal of the Fairings
(1) Remove the rear pylon fairing (Ref. AMM TASK 54-54-00-000-802).
(2) Remove the aft pylon fairing (Ref. AMM TASK 54-56-00-000-802).

Subtask 54-50-00-020-086-A ** ON A/C NOT FOR ALL

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 54-50-00-020-080-A ** ON A/C NOT FOR ALL

A. Disconnection of the Fuel/Defuel System Components
(1) Put the 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 ** ON A/C NOT FOR ALL

(a) Remove the nuts (19) and the bolts (18) from the clamps (16).
(b) Disconnect the bonding straps (17) from the clamps (16).
(c) Remove the clamps (16) from the pipe (20).
(d) Remove the nuts (13), the bolts (29), the washers (28) and the clamps (12).
(e) Disengage the sleeves (27) from the fuel pipe assemblies (30) and (31).
(f) Move the sleeves (27) on the pipe (20).
(g) Remove the pipe (20) from the fuel pipe assemblies (30) and (31). 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 Cut and discard the lockwires from the connectors (25) and the nuts (14) and (23).
2 Loosen the nuts (14) and (23).
3 Remove the nuts (14) and (23) and the connectors (25).
4 Remove the pipe (20) from the fuel pipe assemblies (30) and (31).
5 Remove the retaining rings (22) from the pipe (20).
6 Remove the O-rings (21) and (24) from the pipe (20).
7 Put the PLUG-BLANKING in each disconnected line end.
(h) Remove the retaining rings (26) from the fuel pipe assemblies (30) and (31).
(i) Remove the O-rings (11) and (15) from the fuel pipe assemblies (30) and (31).
(j) Put the CAP - BLANKING on each disconnected fuel pipe assemblies (30) and (31).

Subtask 54-50-00-020-081-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 electrical connectors 6HA1-A(6HA2-A) (62) and 6HA1-B(6HA2-B) (61) 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 (63) and (65).
(5) Remove the sleeve assembly (64) with the clamps (63) and (65) from the bleed air duct.
(6) Remove the seal (66).
(7) Put the PLUG-BLANKING in each disconnected line end.

Subtask 54-50-00-020-101-A ** ON A/C NOT FOR ALL

C. Disconnection of the Hydraulic Lines

Hydraulic Lines - Pylon-to-Wing Junction ** ON A/C NOT FOR ALL

(1) Put the 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 54-50-00-020-084-A ** ON A/C NOT FOR ALL

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

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

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) Cut and discard the lockwires from terminal block 400VT1 (400VT2) (80).
(b) Remove the covers (79).
(c) Remove the nuts (82) and the washers (81).
(d) Make marks on all the electrical feeders before you disconnect them.
(e) Disconnect the electrical feeders from terminal block 400VT1 (400VT2) (80).

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 (90), (86) and (75) from the right side of the forward fairing structure:
1 Cable supports (90):
a Remove the bolts (87) and the washers (88).
b Remove the clamps (89).
c Remove the cable supports (90) with the clamp block plates (91) from the right side of the forward fairing structure.
2 Cable supports (86):
a Remove the bolts (83) and the washers (84).
b Remove the clamps (85).
c Remove the cable supports (86) from the right side of the forward fairing structure.
3 Cable supports (75):
a Remove the nuts (76), the bolts (73) and the washers (74).
b Remove the bolts (78) and the washers (77).
c Remove the cable supports (75) from the right side of the forward fairing structure.
(g) Remove the bolts (70) and the washers (71).
(h) Remove the clamps (72).
(i) Remove the bolt (92) and the washer (93).
(j) Remove the clamp (94) and the spacer (95).
(k) Disconnect connector 424VC1A(424VC2A).
(l) Put CAP - BLANKING on the disconnected electrical connector(s).
(m) 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 ** ON A/C NOT FOR ALL

(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 ** ON A/C NOT FOR ALL

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 (112) and the washers (111).
(b) Disengage the plate (113).
(c) Remove the nut (124) and the washer (125).
(d) Remove the bolt (128) and the washer (127).
(e) Remove the clamp (126).
(f) Remove the nut (123) and the washer (122).
(g) Remove the bolt (117) and the washer (118).
(h) Remove the clamp (119), the spacer (120) and the clamp (121).
(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 54-50-00-020-087-A ** ON A/C NOT FOR ALL

E. Disconnection of the Bonding Straps of the Spigot

Bonding Straps of the Spigot ** ON A/C NOT FOR ALL

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

Subtask 54-50-00-480-056-A ** ON A/C NOT FOR ALL

F. Installation of the Pylon Trolley
(1) Put the 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 and aft engine-to-pylon attach-fittings (RIB5).

Subtask 54-50-00-020-082-A ** ON A/C NOT FOR ALL

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 ** ON A/C NOT FOR ALL

(a) Remove the cotter pins (135).
(b) Lock the fail safe pins (131) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(c) Remove the nuts (134) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(d) Remove the fail safe pins (131).
(e) Release the tabwashers (132).
(f) Lock the sleeves (130) with a special wrench from the 98D54503000001 PYLON R/I WRENCH SET and release the nuts (133).
(g) Remove the nuts (133) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(h) Remove the tabwashers (132).
(i) Remove the sleeves (130) 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 ** ON A/C NOT FOR ALL

(a) Remove the cotter pins (116).
(b) Lock the fail safe pins (111) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(c) Remove the nuts (115) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(d) Remove the fail safe pins (111).
(e) Release the tabwashers (113).
(f) Lock the sleeves (112) with a special wrench from the 98D54503000001 PYLON R/I WRENCH SET and release the nuts (114).
(g) Remove the nuts (114) with a pin wrench from the 98D54503000001 PYLON R/I WRENCH SET.
(h) Remove the tabwashers (113).
(i) Remove the sleeves (112) with the 98D54003005001 PYLON SHAFT EXTRACTOR.

Subtask 54-50-00-020-083-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 01:58:56 UTC