Installation of the Indicating Tubes on the Environmental Control System (ECS) Ducts

TASK 36-11-49-400-831-A
Installation of the Indicating Tubes on the Environmental Control System (ECS) Ducts

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

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

WARNING: YOU MUST NOT TOUCH HOT PARTS WITHOUT APPLICABLE GLOVES. HOT PARTS CAN CAUSE AN INJURY.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 454
ZONE: 464

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 1M(3 FT)
No specific	AR	FOIL - ALUMINUM
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.43 and 0.36 m.daN (38.05 and 31.86 lbf.in )
No specific	Torque wrench: range to between 0.76 and 0.64 m.daN (67.26 and 56.64 lbf.in )
No specific	Torque wrench: range to between 0.79 and 0.68 m.daN (69.91 and 60.18 lbf.in )
No specific	Torque wrench: range to between 1.40 and 1.20 m.daN (123.89 and 106.19 lbf.in )
No specific	Torque wrench: range to between 3.16 and 2.90 m.daN (23.30 and 21.39 lbf.ft )
No specific	Torque wrench: range to between 3.48 and 2.96 m.daN (25.66 and 21.83 lbf.ft )
No specific	Torque wrench: range to between 6.10 and 5.20 m.daN (44.98 and 38.35 lbf.ft )
No specific	Torque wrench: range to between 5.90 and 5.40 m.daN (43.51 and 39.82 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CPNCL00062)	LUBRICATING OIL TURBINE ENGINE SYNT BASE
(Material No.CPNCL02658)	ARDROX 9D4A
(Material No.CPNCL02659)	Wire - LOCKWIRE NICKEL ALLOY
(Material No.08CKB9)	Cleaner-Hydraulic Spillage Absorbent powder -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
454	HOT SECTION
464	HOT SECTION
191DB
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 36-11-49-000-827-A	Removal of the Environmental Control System (ECS) Ducts from the Engine Case Ports to the Pylon Connections
TASK 36-11-49-400-827-A	Installation of the Environmental Control System (ECS) Ducts from the Engine Case Ports to the Pylon Connections
TASK 36-11-52-400-804-A	Installation of the Bleed-Pressure Regulator Valve (PRV)
TASK 49-00-00-860-009-A	APU Shutdown by External Power (131-9(A))
TASK 49-00-00-860-009-A-01	APU Shutdown by Batteries (131-9(A))
TASK 71-00-00-860-827-A	Start the Engine (Normal Automatic Start)
TASK 71-00-00-860-828-A	Start the Engine (Normal Manual Start)
TASK 71-00-00-860-829-A	Engine Shutdown
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 78-30-00-040-807-A	Deactivation of the Thrust Reverser System for Nacelle Maintenance (ICU)
TASK 78-30-00-440-807-A	Reactivation of the Thrust Reverser System after Nacelle Maintenance (ICU)
TASK 78-36-00-010-806-A	Opening of the Thrust Reverser Cowl Doors
TASK 78-36-00-410-806-A	Closing of the Thrust Reverser Cowl Doors
Indicating Tubes on the Environmental Control System (ECS) Duct

3. Job Set-up
Subtask 36-11-49-860-130-A

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002) or (Ref. AMM TASK 24-41-00-861-002).
(2) In the cockpit, on AIR COND panel 30VU:
(a) Make sure that the ENG 1(2) BLEED pushbutton-switch is released (OFF legend on).
(b) Make sure that the APU BLEED pushbutton-switch is released (ON legend off).
(c) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the pneumatic system.
(3) 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 is in the OFF position for a minimum of five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate:

The ENG/MODE selector-switch and
The ENG/MASTER 1(2) control-switch.

(4) In the cockpit, 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) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
(5) On access door 191DB, on the HP ground connector:
(a) Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the pneumatic system.

Subtask 36-11-49-865-210-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

Subtask 36-11-49-010-246-A

C. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR

Subtask 36-11-49-040-164-A

D. Deactivation of the Thrust Reverser System for Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Make sure that you did the deactivation of the thrust reverser system for nacelle maintenance (Ref. AMM TASK 78-30-00-040-807).

Subtask 36-11-49-010-247-A

E. Get Access
(1) Make sure that the right thrust-reverser cowl-door is open (Ref. AMM TASK 78-36-00-010-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
462AR
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

4. Procedure
Subtask 36-11-49-420-143-A

A. Installation of the Indicating Tubes on the ECS Ducts
(1) If you use the APU to energize the electrical circuits, stop the APU:

For GTCP 36-300 APU (Ref. AMM D/O 49-00-00-86)
For APS 3200 APU (Ref. AMM D/O 49-00-00-86)
For 131-9(A) APU (Ref. AMM TASK 49-00-00-860-009).

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

(2) Make sure that you wait for a minimum of 5 minutes until there is no pressure in the bleed-air duct system.

WARNING: DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

(3) In the cockpit, on the SD bleed page:
(a) Make sure that the temperature of the bleed-air duct system are in the ambient conditions.

PRE SPOL BD-EBU-18003 AND PRE SB BD70CR36-036

(4) Install the indicating tube (10) as follows:
(a) Remove all the COVER - PROTECTION and the CAP - PROTECTION from the ports, tubes, hoses and connectors.
(b) Lubricate the threads of the bolt (27) with LUBRICATING OIL TURBINE ENGINE SYNT BASE (Material No.CPNCL00062) .
(c) Put the P-clamp (26) on the indicating tube (10) in the correct position and location:
1 Make sure that the position of the clamp agrees with the position that you recorded in the removal procedure.
(d) Put the indicating tube (10) in position on the engine.
(e) Loosely install the bolt (27) to install the P-clamp (26) on the support bracket (25).
(f) Loosely connect the indicating tube (10) to the port on the High Pressure Valve (HPV) (24).
(g) If removed, install the ECS Y-duct (23) (Ref. AMM TASK 36-11-49-400-827).
(h) Loosely connect the indicating tube (10) to the port on the ECS Y-duct (23).
(i) TORQUE the bolt (27) to between 0.76 and 0.64 m.daN (67.26 and 56.64 lbf.in )

.
(j) TORQUE the coupling nut at each end of the indicating tube (10) to between 3.16 and 2.90 m.daN (23.30 and 21.39 lbf.ft )

.

End of PRE SPOL BD-EBU-18003 AND PRE SB BD70CR36-036

POST SPOL BD-EBU-18003 AND POST SB BD70CR36-036

(5) Install the indicating tube (10) as follows:
(a) Remove all the COVER - PROTECTION and the CAP - PROTECTION from the ports, tubes, hoses and connectors.
(b) Lubricate the threads of the bolts (27) and (40) with LUBRICATING OIL TURBINE ENGINE SYNT BASE (Material No.CPNCL00062) .
(c) Install the bolt (27) on the support bracket (25).
(d) If necessary, remove the ECS Y-duct (23) to get access to the bolt (27) (Ref. AMM TASK 36-11-49-000-827).
(e) TORQUE the bolt (27) to between 0.76 and 0.64 m.daN (67.26 and 56.64 lbf.in )

.
(f) Temporarily loosen the nut (41).
(g) Put the P-clamp (26) on the indicating tube (10) in the correct position and location, as recorded during the removal procedure.
(h) Put the indicating tube (10) in position on the engine.
(i) Loosely connect the indicating tube (10) to the port on the HPV (24).
(j) Loosely connect the indicating tube (10) to the port on the ECS Y- duct (23).
(k) Loosely install the bolt (40) to attach the P-clamp (26) to the support bracket (43).
(l) TORQUE the coupling nut at each end of the indicating tube (10) to between 3.16 and 2.90 m.daN (23.30 and 21.39 lbf.ft )

.
(m) TORQUE the bolt (40) to between 0.76 and 0.64 m.daN (67.26 and 56.64 lbf.in )

CAUTION: MAKE SURE THAT YOU KEEP THE BRACKET IN THE CORRECT POSITION WHILE YOU TORQUE THE NUT. IF YOU DO NOT OBEY THIS INSTRUCTION, THERE IS A RISK OF PRELOAD ON THE INDICATING TUBE.

(n) Torque the nut (41) as follows:
1 Make sure that you keep the bracket (43) in the correct installation position when you torque the nut (41) to prevent preload in the indicating tube (10).
2 TORQUE the nut (41) (Ref. AMM TASK 36-11-49-400-827).

End of POST SPOL BD-EBU-18003 AND POST SB BD70CR36-036
(6) Install the indicating tube (7) as follows:
(a) Remove all the COVER - PROTECTION and the CAP - PROTECTION from the ports, the tubes, the hoses and the connectors.
(b) Lubricate the threads of the bolt (1) with LUBRICATING OIL TURBINE ENGINE SYNT BASE (Material No.CPNCL00062) .
(c) Put the P-clamp (9) on the indicating tube (7) in the correct installation position and location:
1 Make sure that the position of the clamp agrees with the position that you recorded in the removal procedure.
(d) Install the support bracket (28) with the two bolts (29) on the ECS duct (6).
(e) TORQUE the two bolts (29) to between 1.40 and 1.20 m.daN (123.89 and 106.19 lbf.in )

.
(f) Put the indicating tube (7) in position on the engine.
(g) Loosely install the bolt (1) that attaches the P-clamp (9) to the support bracket (28) on the ECS duct (6).
(h) Loosely connect the indicating tube (7) to the ECS duct (6).
(i) If removed, install the Pressure Regulating Valve (PRV) (5) (Ref. AMM TASK 36-11-52-400-804).
(j) Loosely connect the indicating tube (7) to the mating port on the PRV (5).
(k) TORQUE the bolt (1) to between 0.79 and 0.68 m.daN (69.91 and 60.18 lbf.in )

.
(l) TORQUE the coupling nut at each end of the indicating tube (7) to between 3.16 and 2.90 m.daN (23.30 and 21.39 lbf.ft )

.

PRE SPOL BD-EBU-17003 & PRE SB BD70CR36-026
(7) Install the support bracket (19) as follows:
(a) Install the bolts (33), to install the flange (32) on the support bracket (19).
(b) TORQUE the bolts (33) to between 1.40 and 1.20 m.daN (123.89 and 106.19 lbf.in )

.
(c) Install the support bracket (19) together with the flange (32) on the engine.
(d) Install the bolts (38) that attach the support bracket (19).
(e) TORQUE the bolts (38) to between 1.40 and 1.20 m.daN (123.89 and 106.19 lbf.in )

.
(f) Install the bolt (36) and the P-clamp (35) on the flange (32).
(g) TORQUE the bolt (36) to between 0.43 and 0.36 m.daN (38.05 and 31.86 lbf.in )

.
(h) Install the harness (34) on the spring clip of the support bracket (19).

End of PRE SPOL BD-EBU-17003 & PRE SB BD70CR36-026

POST SPOL BD-EBU-17003 & POST SB BD70CR36-026
(8) Install the support bracket (19) as follows:
(a) Remove the zip-ties that temporarily safetied the flange (39).
(b) Install the support bracket (19) on the engine.
(c) Install the bolts (33) that attach the support bracket (19) and the flange (39).
(d) TORQUE the bolts (33) to between 1.40 and 1.20 m.daN (123.89 and 106.19 lbf.in )

.
(e) Install the harness (34) on the spring clip of the support bracket (19).

End of POST SPOL BD-EBU-17003 & SB BD70CR36-026
(9) Install the support bracket (21) as follows:
(a) Install the support bracket (21) on the engine.
(b) Install the two bolts (37) that attach the support bracket (21).
(c) TORQUE the two bolts (37) to between 1.40 and 1.20 m.daN (123.89 and 106.19 lbf.in )

.

PRE SPOL BD-EBU-20001 & SPOL BD-EBU-20002 and PRE SB BD70CR36-041 & PRE SPOL BD-EBU-20003

(10) Install the indicating tube (8) as follows:
(a) Remove all the COVER - PROTECTION and the CAP - PROTECTION from the ports, tubes, hoses and connectors.
(b) Lubricate the threads of the bolts (14) and (17) with LUBRICATING OIL TURBINE ENGINE SYNT BASE (Material No.CPNCL00062) .
(c) Put the P-clamps (15) and (18) on the indicating tube (8) in the correct position and location:
1 Make sure that the position of the clamp agrees with the position that you recorded in the removal procedure.
(d) Put the indicating tube (8) in position on the engine.
(e) Loosely install the bolts (14) and (17) that attach the P-clamps (15) and (18) to the support brackets (21) and (19).

CAUTION: DO NOT BEND THE HOSE OF THE INDICATING TUBE TOO MUCH. IF YOU DO, YOU CAN CAUSE CRACKS AND/OR LEAKS IN THE HOSE DURING OPERATION.

(f) Loosely connect the indicating tube (8) to the pylon (22).

CAUTION: DO NOT BEND THE HOSE OF THE INDICATING TUBE TOO MUCH. IF YOU DO, YOU CAN CAUSE CRACKS AND/OR LEAKS IN THE HOSE DURING OPERATION.

(g) Loosely connect the indicating tube (8) to the ECS duct (6).
(h) TORQUE the bolts (14) and (17) to between 0.79 and 0.68 m.daN (69.91 and 60.18 lbf.in )

CAUTION: DO NOT OVERTORQUE THE COUPLING NUT OF THE INDICATING TUBE AT THE PYLON INTERFACE. IF YOU DO, THE INDICATING TUBE CAN TURN OUT OF POSITION, WHICH CAN CAUSE A BEND AND/OR CRACKS IN THE HOSE.

(i) TORQUE the coupling nut at each end of the indicating tube (8) to between 3.16 and 2.90 m.daN (23.30 and 21.39 lbf.ft )

.

End of PRE SPOL BD-EBU-20001 & SPOL BD-EBU-20002 and PRE SB BD70CR36-041 & PRE SPOL BD-EBU-20003

POST SPOL BD-EBU-20001 & SPOL BD-EBU-20002 and POST SB BD70CR36-041 & POST SPOL BD-EBU-20003

(11) Install indicating tube (8) as follows:
(a) Remove all the COVER - PROTECTION and the CAP - PROTECTION from the ports, tubes, hoses and connectors.
(b) Lubricate the threads of the bolts (14) and (17) with LUBRICATING OIL TURBINE ENGINE SYNT BASE (Material No.CPNCL00062) .
(c) Put the P-clamps (15) and (18) in the correct position and location on the indicating tube (8):
1 Make sure that the position of the clamp agrees with the position that you recorded in the removal procedure.
(d) Put the indicating tube (8) in position on the engine.
(e) Loosely install the bolts (14) and (17) that attach the P-clamps (15) and (18) to the support brackets (21) and (19).
(f) Loosely connect the indicating tube (8) to the ECS duct (6).
(g) TORQUE the bolts (14) and (17) to between 0.79 and 0.68 m.daN (69.91 and 60.18 lbf.in )

.
(h) TORQUE the coupling nut at ECS Duct (6) to between 3.48 and 2.96 m.daN (25.66 and 21.83 lbf.ft )

.
(12) Install flex tube (45) as follows:
(a) Remove all the COVER - PROTECTION and the CAP - PROTECTION from the ports, tubes, hoses and connectors.
(b) Put the flex tube (45) in position on the engine.

CAUTION: DO NOT BEND THE FLEX TUBE TOO MUCH. IF YOU BEND IT TOO MUCH, THIS CAN CAUSE CRACKS AND/OR LEAKS IN THE FLEX TUBE DURING OPERATION.

(d) Loosely connect the flex tube (45) to the indicating tube (8).

CAUTION: DO NOT TORQUE THE COUPLING NUT OF THE FLEX TUBE TOO MUCH AT THE PYLON INTERFACE. IF YOU TORQUE THE COUPLING NUT TOO MUCH, THE FLEX TUBE CAN MOVE OUT OF ITS POSITION AND CAUSE BEND AND/OR CRACKS IN THE FLEX TUBE.

CAUTION: WHEN YOU TORQUE THE COUPLING NUTS OF THE FLEX TUBE, USE THE SECOND WRENCH TO PREVENT TOO MUCH BEND IN THE FLEX TUBE.

(e) TORQUE the coupling nut that attach flex tube (45) to the pylon (22) to between 3.48 and 2.96 m.daN (25.66 and 21.83 lbf.ft )

CAUTION: WHEN YOU TORQUE THE COUPLING NUTS OF THE FLEX TUBE, USE THE SECOND WRENCH TO PREVENT TOO MUCH BEND IN THE FLEX TUBE.

(f) TORQUE the coupling nut that attach flex tube (45) and indication tube (8) to between 3.48 and 2.96 m.daN (25.66 and 21.83 lbf.ft )

.

End of POST SPOL BD-EBU-20001 & SPOL BD-EBU-20002 and POST SB BD70CR36-041 & POST SPOL BD-EBU-20003

PRE SPOL BD-EBU-20001 & SPOL BD-EBU-20002 and PRE SB BD70CR36- 041 & PRE SPOL BD-EBU-20003
(13) Install the indicating tube (4) as follows:
(a) Remove all the COVER - PROTECTION and the CAP - PROTECTION from the ports, tubes, hoses and connectors.
(b) Lubricate the threads of the bolts (2), (13) and (16) with LUBRICATING OIL TURBINE ENGINE SYNT BASE (Material No.CPNCL00062) .
(c) Put the P-clamps (3), (12) and (20) on the indicating tube (4) in the correct position and location:
1 Make sure that the position of the clamp agrees with the position that you recorded in the removal procedure.
(d) Put the indicating tube (4) in position on the engine.
(e) Loosely install the bolts (13) and (16) that attach the P-clamps (12) and (20) to the support brackets (21) and (19).
(f) Loosely install the bolt (2) that attaches the P-clamp (3) to the support bracket (28) on the ECS duct (6).

CAUTION: DO NOT BEND THE HOSE OF THE INDICATING TUBE TOO MUCH. IF YOU DO, YOU CAN CAUSE CRACKS AND/OR LEAKS IN THE HOSE DURING OPERATION.

(g) Loosely connect the indicating tube (4) to the pylon (22).

CAUTION: DO NOT BEND THE HOSE OF THE INDICATING TUBE TOO MUCH. IF YOU DO, YOU CAN CAUSE CRACKS AND/OR LEAKS IN THE HOSE DURING OPERATION.

(h) Loosely connect the indicating tube (4) to the ECS Y-duct (23).
(i) TORQUE the bolts (2), (13) and (16) to between 0.79 and 0.68 m.daN (69.91 and 60.18 lbf.in )

CAUTION: DO NOT OVERTORQUE THE COUPLING NUT OF THE INDICATING TUBE AT THE PYLON INTERFACE. IF YOU DO, THE INDICATING TUBE CAN TURN OUT OF POSITION, WHICH CAN CAUSE A BEND AND/OR CRACKS IN THE HOSE.

(j) TORQUE the coupling nut of the indicating tube (4) at the ECS Y-Duct (23) side to between 3.16 and 2.90 m.daN (23.30 and 21.39 lbf.ft )

.
(k) TORQUE the coupling nut of the indicating tube (4) at the pylon (22)
side to between 5.90 and 5.40 m.daN (43.51 and 39.82 lbf.ft )

.

End of PRE SPOL BD-EBU-20001 & SPOL BD-EBU-20002 and PRE SB BD70CR36-041 & PRE SPOL BD-EBU-20003

POST SPOL BD-EBU-20001 & SPOL BD-EBU-20002 and POST SB BD70CR36-041 & POST SPOL BD-EBU-20003
(14) Install indicating tube (4) as follows:
(a) Remove all the COVER - PROTECTION and the CAP - PROTECTION from the ports, tubes, hoses and connectors.
(b) Lubricate the threads of the bolts (2), (13) and (16) with LUBRICATING OIL TURBINE ENGINE SYNT BASE (Material No.CPNCL00062) .
(c) Put the P-clamps (3), (12) and (20) in the correct position and location on the indicating tube (4):
1 Make sure that the position of the clamp agrees with the position that you recorded in the removal procedure.
(d) Put the indicating tube (4) in position on the engine.
(e) Loosely install the bolts (13) and (16) that attach the P-clamps (12) and (20) to the support brackets (21) and (19).
(f) Loosely install the bolt (2) that attaches the P-clamp (3) to the support bracket (28) on the ECS duct (6).
(g) Loosely connect the indicating tube (4) to the ECS Y-duct (23).
(h) TORQUE the bolts (2), (13) and (16) to between 0.79 and 0.68 m.daN (69.91 and 60.18 lbf.in )

.
(i) TORQUE the coupling nut of the indicating tube (4) at the ECS Y-Duct (23) side to between 3.48 and 2.96 m.daN (25.66 and 21.83 lbf.ft )

.
(15) Install flex tube (44) as follows:
(a) Put the flex tube (44) in position on the engine.

CAUTION: DO NOT BEND THE FLEX TUBE TOO MUCH. IF YOU BEND IT TOO MUCH, THIS CAN CAUSE CRACKS AND/OR LEAKS IN THE FLEX TUBE DURING OPERATION.

(b) Loosely connect the flex tube (44) to the pylon (22).

CAUTION: DO NOT BEND THE FLEX TUBE TOO MUCH. IF YOU BEND IT TOO MUCH, THIS CAN CAUSE CRACKS AND/OR LEAKS IN THE FLEX TUBE DURING OPERATION.

CAUTION: WHEN YOU TORQUE THE COUPLING NUTS OF THE FLEX TUBE, USE THE SECOND WRENCH TO PREVENT TOO MUCH BEND IN THE FLEX TUBE.

(d) TORQUE the coupling nut that attach flex tube (44) to the pylon (22) to between 6.10 and 5.20 m.daN (44.98 and 38.35 lbf.ft )

CAUTION: WHEN YOU TORQUE THE COUPLING NUTS OF THE FLEX TUBE, USE THE SECOND WRENCH TO PREVENT TOO MUCH BEND IN THE FLEX TUBE.

(e) TORQUE the coupling nut that attach flex tube (44) and indication tube (4) to between 3.48 and 2.96 m.daN (25.66 and 21.83 lbf.ft )

.

End of POST SPOL BD-EBU-20001 & SPOL BD-EBU-20002 and POST SB BD70CR36-041 & POST SPOL BD-EBU-20003

Subtask 36-11-49-480-085-A

B. Prepare for the Leak Test.
(1) Find the location of a pneumatic joint air-leak with one of the two procedures that follow:
(a) Apply Cleaner-Hydraulic Spillage Absorbent powder - (Material No.08CKB9) or ARDROX 9D4A (Material No.CPNCL02658) around the pneumatic joints, only on the connections of the removed pneumatic components.

NOTE: Airbus recommends that you do not apply dry developer on all the pneumatic components.

(b) Install an FOIL - ALUMINUM around the locations of the pneumatic joint as follows:
1 Wind the foil wrap around the joint one time.
2 Twist the seam of the foil wrap tight.
3 Make the foil wrap as tight as possible on the tube, but do not cause damage to the wrap.

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.

4 Attach the foil wrap with Wire - LOCKWIRE NICKEL ALLOY (Material No.CPNCL02659) on the two sides of the pneumatic joint.

Subtask 36-11-49-410-196-A

C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the right thrust-reverser cowl-door (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
462AR

Subtask 36-11-49-440-119-A

D. Do the reactivation of the thrust reverser system after nacelle maintenance (Ref. AMM TASK 78-30-00-440-807).

Subtask 36-11-49-865-214-A

E. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

Subtask 36-11-49-860-133-A

F. Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).

Subtask 36-11-49-720-104-A

G. Do this Test
(1) On ECAM control-panel 11VU, push the BLEED key (on the lower ECAM DU, the BLEED page comes into view).
(2) On the lower ECAM DU, on the BLEED page:

Make sure that the related HP bleed valve and bleed-pressure regulator valve are shown closed.

(3) Start the related engine with the normal automatic start procedure (Ref. AMM TASK 71-00-00-860-827) or normal manual start procedure (Ref. AMM TASK 71-00-00-860-828) and keep it at idle.
(4) On the AIR COND panel 30VU:

Push the ENG 1(2) BLEED pushbutton switch (the OFF legend goes off).

(5) After five minutes, on the lower ECAM DU, on the BLEED page:

Make sure that the related HP bleed valve and bleed-pressure regulator valve are shown open.

(6) Stop the engine (Ref. AMM TASK 71-00-00-860-829).

Subtask 36-11-49-865-215-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

Subtask 36-11-49-040-166-A

I. Deactivation of the Thrust Reverser System for Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation of the thrust reverser system for nacelle maintenance (Ref. AMM TASK 78-30-00-040-807).

Subtask 36-11-49-010-249-A

J. Open the right thrust-reverser cowl-door (Ref. AMM TASK 78-36-00-010-806):
(1) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
452AR
(2) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
462AR

Subtask 36-11-49-080-064-A

K. Make sure that there are no leaks at the junction of the removed pneumatic components on the related engine.

NOTE: There is a leak when the foil installed on the duct breaks or when it is too hot.
There is a leak when the leak air removes the dry developer from the junction.

(1) Remove the materials that you used to do the leak test.

5. Close-up
Subtask 36-11-49-860-132-A

A. Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).

Subtask 36-11-49-865-213-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

Subtask 36-11-49-410-194-A

Subtask 36-11-49-440-118-A

D. Do the reactivation of the thrust reverser system after nacelle maintenance (Ref. AMM TASK 78-30-00-440-807).

Subtask 36-11-49-410-195-A

E. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).

Subtask 36-11-49-862-115-A

F. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002) or (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 01:11:50 UTC