DOC AIRBUS | AMM A320FInstallation of the Hydraulic Suction Line from the Pylon to the Green Hydraulic Pump
TASK 29-11-49-400-811-A
Installation of the Hydraulic Suction Line from the Pylon to the Green Hydraulic Pump
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 29-11-49-860-149-A
Subtask 29-11-49-420-124-A
Subtask 29-11-49-410-111-A
[Rev.10 from 2021]
2026.04.01 00:17:55 UTC
Installation of the Hydraulic Suction Line from the Pylon to the Green Hydraulic Pump
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:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING:
OBEY THE HYDRAULIC SAFETY PROCEDURES.
ZONE: 435
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2442) | engine oil |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 435 | FAN AND ACCESSORY GEARBOX |
| 195BB, 197CB | |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1) | |
| 437AL, 438AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-12-29-611-001-A | Fill the Hydraulic Fluid Reservoir with a Hand Pump |
| TASK 20-23-22-910-001-A | Marking of the Unions after Application of Standard or Specific Tightening Torque |
| TASK 29-10-00-864-001-A | Depressurize the Green Hydraulic System |
| TASK 29-11-00-710-001-A | Operational Test of the Green Hydraulic System |
| TASK 29-14-00-614-001-A | Depressurization of the Hydraulic Reservoirs |
| 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 |
Hydraulic Suction Line from the Pylon to the Green Hydraulic PumpSubtask 29-11-49-860-149-A
A. Aircraft Maintenance Configuration
(1) Make sure that the Green hydraulic system is depressurized
(Ref. AMM TASK 29-10-00-864-001).
(2) Depressurize the reservoir of the Green hydraulic system
(Ref. AMM TASK 29-14-00-614-001).
Subtask 29-11-49-941-119-A (1) Make sure that the Green hydraulic system is depressurized
(Ref. AMM TASK 29-10-00-864-001).
(2) Depressurize the reservoir of the Green hydraulic system
(Ref. AMM TASK 29-14-00-614-001).
B. Safety Precautions
(1) On AIR COND panel 30VU:
(4) On the center pedestal, on ENG panel 115VU:
Subtask 29-11-49-010-145-A (1) On AIR COND panel 30VU:
- Make sure that the APU BLEED pushbutton switch is released (ON legend off).
- Make sure that a WARNING NOTICE(S) is in position to tell persons not to operate this pushbutton switch.
- On the HYD section of panel 40VU
- On access door 197CB, on the ground service panel of the Green hydraulic system.
(4) 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.
- Make sure that a WARNING NOTICE(S) is in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.
- Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
- Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
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
(2) Make sure that an ACCESS PLATFORM 2M (6 FT) is in position at the engine.
4. Procedure(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
(2) Make sure that an ACCESS PLATFORM 2M (6 FT) is in position at the engine.
Subtask 29-11-49-420-124-A
A. Installation of the Hydraulic Suction Line from the Pylon to the Green Hydraulic Pump
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the hydraulic line end-fittings are serviceable.
(4) Remove all the protective covers and caps from the openings, tubes, hoses and connectors.
(5) Put the hydraulic tube (2) in position on the engine.
(6) Connect the hydraulic tube (2) to the fitting on the hydraulic pump (1) with your hand.
(7) Connect the quick disconnect coupling between the hydraulic tube (2) and the pylon interface (10).
(8) Attach the hydraulic tube (2) to the engine as follows:
(a) Lubricate the threads of the bolts (4) with engine oil (Material No.CP2442) .
(b) At each of the two locations, install the clamps (3) and the two bolts (4) to attach the hydraulic tube (2) to the support brackets (5).
(9) Use a WRENCH - STANDARD to hold the fitting on the hydraulic pump (1) and TRIPLE TORQUE the hydraulic tube (2) to between 20.41 and 17.39 m.daN (150.52 and 128.24 lbf.ft )
.
(10) TORQUE the bolts (4) to between 0.43 and 0.36 m.daN (38.05 and 31.86 lbf.in ).
(11) Identify the tightened union nuts with a red line
(Ref. AMM TASK 20-23-22-910-001).
Subtask 29-11-49-710-085-A WARNING:
USE PROTECTIVE CLOTHING WHEN YOU USE HYDRAULIC FLUID. HYDRAULIC FLUID CAN CAUSE SKIN IRRITATION.
CAUTION:
USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:
- ONE WRENCH TO HOLD THE UNION, AND
- ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.
CAUTION:
DO NOT LET HYDRAULIC FLUID FALL ON THE ENGINE. UNWANTED HYDRAULIC FLUID MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FLUID CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.
(1) Clean the component interfaces and the adjacent area.(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the hydraulic line end-fittings are serviceable.
(4) Remove all the protective covers and caps from the openings, tubes, hoses and connectors.
(5) Put the hydraulic tube (2) in position on the engine.
(6) Connect the hydraulic tube (2) to the fitting on the hydraulic pump (1) with your hand.
(7) Connect the quick disconnect coupling between the hydraulic tube (2) and the pylon interface (10).
(8) Attach the hydraulic tube (2) to the engine as follows:
(a) Lubricate the threads of the bolts (4) with engine oil (Material No.CP2442) .
(b) At each of the two locations, install the clamps (3) and the two bolts (4) to attach the hydraulic tube (2) to the support brackets (5).
(9) Use a WRENCH - STANDARD to hold the fitting on the hydraulic pump (1) and TRIPLE TORQUE the hydraulic tube (2) to between 20.41 and 17.39 m.daN (150.52 and 128.24 lbf.ft )
. (10) TORQUE the bolts (4) to between 0.43 and 0.36 m.daN (38.05 and 31.86 lbf.in )
. (11) Identify the tightened union nuts with a red line
(Ref. AMM TASK 20-23-22-910-001).
B. Operational Test
(1) Do the operational test of the Green hydraulic system (Ref. AMM TASK 29-11-00-710-001).
(2) After the dry-motoring, make sure that there were no leaks from the hydraulic connections.
(3) Make sure that the level of the hydraulic fluid in the Green reservoir is correct. If necessary, fill the reservoir (Ref. AMM TASK 12-12-29-611-001).
5. Close-up(1) Do the operational test of the Green hydraulic system (Ref. AMM TASK 29-11-00-710-001).
(2) After the dry-motoring, make sure that there were no leaks from the hydraulic connections.
(3) Make sure that the level of the hydraulic fluid in the Green reservoir is correct. If necessary, fill the reservoir (Ref. AMM TASK 12-12-29-611-001).
Subtask 29-11-49-410-111-A
A. Close Access
(1) Remove the container.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Remove the WARNING NOTICE(S).
Subtask 29-11-49-410-112-A (1) Remove the container.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Remove the WARNING NOTICE(S).