W DOC AIRBUS | AMM A320F

Removal of the Reservoir Pressurization Tube in the Pylon

TASK 29-14-49-000-002-A
Removal of the Reservoir Pressurization Tube in the Pylon

FIN: 1674GM ** ON A/C NOT FOR ALL
1. Reason for the Job
NOTE: This removal task is only for the engine 1.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific
AR
PLUG - BLANKING
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
195BB
476AR, 476BR
475AR, 475BR
FOR [1000EM1] (ENGINE-1)
437AL, 451AL
 C. Referenced Information
REFERENCE
DESIGNATION
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 29-23-00-864-001-A
Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
TASK 29-24-00-864-001-A
Depressurize the Yellow Hydraulic System
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 71-13-00-010-010-A
Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-010-040-A
Opening of the Fan Cowl Doors
TASK 71-13-00-010-040-B
Opening of the Fan Cowl Doors
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 78-32-00-010-010-A
Opening of the Thrust Reverser Halves
TASK 78-36-00-010-040-A
Opening of the Thrust Reverser Doors
TASK 78-36-00-010-040-B
Opening of the Thrust Reverser Doors
F Forward Reservoir Pressurization-Tube in the Pylon ** ON A/C NOT FOR ALL
F Middle Reservoir Pressurization-Tube in the Pylon ** ON A/C NOT FOR ALL
F Middle Reservoir Pressurization-Tube in the Pylon ** ON A/C NOT FOR ALL
F Aft Reservoir Pressurization-Tube in the Pylon
3. Job Set-up
Subtask 29-14-49-860-052-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Depressurize the aircraft hydraulic systems (Ref. AMM TASK 29-23-00-864-001), (Ref. AMM TASK 29-24-00-864-001) and (Ref. AMM TASK 29-10-00-864-003).
   (2) Depressurize the hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).
   (3) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic system:
  • On the ground service panel 197CB.
   (4) Put a WARNING NOTICE(S) in position on the access door 195BB to tell persons not to pressurize the Green hydraulic reservoir.
Subtask 29-14-49-941-052-A ** ON A/C NOT FOR ALL
B. Safety Precautions
   (1) Make sure that the engine 1 shutdown occurred not less than five minutes before you do this procedure.
   (2) On the center pedestal, on ENG panel 115VU:
  • Make sure that the ENG/MODE selector switch is in the NORM position.
  • 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.
  • Put WARNING NOTICE(S) in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.
   (3) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic system:
  • In the cockpit, on the HYD section of overhead panel 40VU.
   (4) On the ENG section of maintenance panel 50VU:
  • Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
  • Put WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
Subtask 29-14-49-010-052-B ** ON A/C NOT FOR ALL
C. Get Access
   (1) Open the left fan-cowl door (Ref. AMM TASK 71-13-00-010-040):
     (a) FOR [1000EM1] (ENGINE-1)
437AL.
Subtask 29-14-49-040-050-B ** ON A/C NOT FOR ALL
D. Deactivation of the Thrust Reverser
WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
   (1) Make the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-481-041).
Subtask 29-14-49-010-052-C ** ON A/C NOT FOR ALL
E. Get Access
   (1) Open the left fan cowl (Ref. AMM TASK 71-13-00-010-010):
     (a) FOR [1000EM1] (ENGINE-1)
437AL.
Subtask 29-14-49-040-050-C ** ON A/C NOT FOR ALL
F. Deactivation of the Thrust Reverser
WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
   (1) Deactivate the thrust-reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012).
Subtask 29-14-49-010-052-D ** ON A/C NOT FOR ALL
G. Get Access
   (1) Open the left fan-cowl door (Ref. AMM TASK 71-13-00-010-040):
     (a) FOR [1000EM1] (ENGINE-1)
437AL.
Subtask 29-14-49-040-050-D ** ON A/C NOT FOR ALL
H. Deactivation of the Thrust Reverser
WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
   (1) Make the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-481-041).
Subtask 29-14-49-010-054-B ** ON A/C NOT FOR ALL
I. Get Access
   (1) Open the left thrust-reverser door (Ref. AMM TASK 78-36-00-010-040):
     (a) FOR [1000EM1] (ENGINE-1)
451AL.
   (2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the engine.
   (3) Remove the access panels 476AR and 476BR (Ref. AMM TASK 54-53-11-000-002).
Subtask 29-14-49-010-054-D ** ON A/C NOT FOR ALL
I. Get Access
   (1) Open the left thrust-reverser door (Ref. AMM TASK 78-36-00-010-040):
     (a) FOR [1000EM1] (ENGINE-1)
451AL.
   (2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the engine.
   (3) Remove the access panels 476AR and 476BR (Ref. AMM TASK 54-53-11-000-002).
Subtask 29-14-49-010-054-F ** ON A/C NOT FOR ALL
I. Get Access
   (1) Open the left thrust-reverser half (Ref. AMM TASK 78-32-00-010-010):
     (a) FOR [1000EM1] (ENGINE-1)
451AL.
   (2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the engine.
   (3) Remove the access panels 475AR and 475BR (Ref. AMM TASK 54-53-11-000-002).
Subtask 29-14-49-010-054-K ** ON A/C NOT FOR ALL
I. Get Access
   (1) Open the left thrust-reverser door (Ref. AMM TASK 78-36-00-010-040):
     (a) FOR [1000EM1] (ENGINE-1)
451AL.
   (2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the engine.
   (3) Remove the access panels 475AR and 475BR (Ref. AMM TASK 54-53-11-000-002).
4. Procedure
Subtask 29-14-49-020-051-A ** ON A/C NOT FOR ALL
A. Removal of the Forward Reservoir Pressurization-Tube in the Pylon
F Forward Reservoir Pressurization-Tube in the Pylon ** ON A/C NOT FOR ALL
   (1) Loosen the nut (7) and disconnect the reservoir pressurization hose (6).
   (2) Remove the screws (5) and the washers (4).
   (3) Loosen the nut (2) and remove the forward reservoir pressurization-tube (3).
   (4) Put PLUG - BLANKING on the disconnected line ends of the tubes (1), (3) and the hose (6).
Subtask 29-14-49-020-052-C ** ON A/C NOT FOR ALL
B. Removal of the Middle Reservoir Pressurization-Tube in the Pylon
F Middle Reservoir Pressurization-Tube in the Pylon ** ON A/C NOT FOR ALL
   (1) Loosen the nut (2) and disconnect the aft reservoir pressurization-tube (1).
   (2) Loosen the nut (7) and disconnect the reservoir pressurization hose (8).
   (3) Remove the screws (6) and the washers (5).
   (4) Remove the screws (4), the washers (3) and remove the middle reservoir pressurization-tube (9).
   (5) Put PLUG - BLANKING on the disconnected line ends of the tubes (1), (9) and the hose (8).
Subtask 29-14-49-020-052-E ** ON A/C NOT FOR ALL
B. Removal of the Middle Reservoir Pressurization-Tube in the Pylon
F Middle Reservoir Pressurization-Tube in the Pylon ** ON A/C NOT FOR ALL
   (1) Loosen the nut (2) and disconnect the aft reservoir pressurization-tube (1).
   (2) Loosen the nut (8) and disconnect the forward reservoir pressurization-tube (9).
   (3) Remove the screws (7) and the washers (6).
   (4) Remove the screws (14), the washers (13) and the spacer (5).
   (5) Remove the screws (4), the washers (3) and remove the middle reservoir pressurization-tube (10).
   (6) Put PLUG - BLANKING on the disconnected line ends of the tubes (1), (9) and (10).
Subtask 29-14-49-020-052-G ** ON A/C NOT FOR ALL
B. Removal of the Middle Reservoir Pressurization-Tube in the Pylon
F Middle Reservoir Pressurization-Tube in the Pylon ** ON A/C NOT FOR ALL
   (1) Loosen the nut (2) and disconnect the aft reservoir pressurization-tube (1).
   (2) Loosen the nut (8) and disconnect the reservoir pressurization hose (9).
   (3) Remove the screws (7) and the washers (6).
   (4) Remove the screws (14), the washers (13) and the spacer (5).
   (5) Remove the screws (4), the washers (3) and remove the middle reservoir pressurization-tube (10).
   (6) Put PLUG - BLANKING on the disconnected line ends of the tubes (1), (10) and the hose (9).
Subtask 29-14-49-020-053-A ** ON A/C NOT FOR ALL
C. Removal of the Aft Reservoir Pressurization-Tube in the Pylon
F Aft Reservoir Pressurization-Tube in the Pylon ** ON A/C NOT FOR ALL
   (1) Loosen the nuts (2) and (9) of the aft reservoir pressurization-tube (5).
   (2) Remove the screw (4), the washer (3) and the nut (11).
   (3) Discard the nut (11).
   (4) Remove the screw (7) and the washer (6).
   (5) Remove the aft reservoir pressurization-tube (5).
   (6) Put PLUG - BLANKING on the disconnected line ends of the tubes (1), (8) and (5).
[Rev.10 from 2021] 2026.04.01 00:25:04 UTC
"Aviabrain" 2025