DOC AIRBUS | AMM A320FInstallation of the Inline Damper of the Yellow Engine Pump
TASK 29-13-46-400-802-A
Installation of the Inline Damper of the Yellow Engine 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. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 29-13-46-860-059-A
Subtask 29-13-46-420-053-B
Subtask 29-13-46-410-054-A
[Rev.10 from 2021]
2026.04.01 00:21:56 UTC
Installation of the Inline Damper of the Yellow Engine 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:
DO NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. HYDRAULIC FLUID IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY. FLUSH HYDRAULIC FLUID FROM YOUR EYES, MOUTH OR SKIN WITH WATER. GET MEDICAL AID IF YOU GET HYDRAULIC FLUID IN YOUR EYES OR MOUTH.
WARNING:
OBEY THE HYDRAULIC SAFETY PROCEDURES.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
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. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.02ABA1) | Phosphate Ester Hydraulic Fluid-General Power - - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 460 | ENG 2 THRUST REVERSER & EXHAUST SECTION |
| 195BB, 198CB | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2) | |
| 447AL, 448AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 6 | PACKING | AIPC 29-13-51-50-080 |
| 4 | RETAINER | AIPC 29-13-51-50-090 |
| 5 | PACKING | AIPC 29-13-51-50-095 |
| 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 29-10-00-864-002-A | Depressurize the Yellow Hydraulic System |
| TASK 29-13-00-710-002-A | Operational Test of the Yellow 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 |
Inline Damper of the Yellow Engine PumpSubtask 29-13-46-860-059-A
A. Aircraft Maintenance Configuration
(1) Make sure that the Yellow hydraulic system is depressurized.
(Ref. AMM TASK 29-10-00-864-002)
(2) Make sure that the reservoir of the Yellow hydraulic system is depressurized.
(Ref. AMM TASK 29-14-00-614-001)
Subtask 29-13-46-941-055-A (1) Make sure that the Yellow hydraulic system is depressurized.
(Ref. AMM TASK 29-10-00-864-002)
(2) Make sure that the reservoir of the Yellow hydraulic system is depressurized.
(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 29-13-46-010-060-A (1) On AIR COND panel 30VU:
- Make sure that the APU BLEED pushbutton switch is released (the ON legend is 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 198CB, on the ground service panel of the Yellow 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 [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
4. Procedure(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
Subtask 29-13-46-420-053-B
A. Installation of the Inline Damper of the Yellow Engine 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) Make sure that a CONTAINER 5 L (1.32 USGAL) is in position below the hydraulic pressure hose connection.
(5) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.
(6) Apply hydraulic fluid:
(b) Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) on the threads of the damper (1).
(7) Install the new AIPC 29-13-51-50-080 PACKING (6) to the damper (1).
(8) Install the new AIPC 29-13-51-50-095 PACKING (5) with new AIPC 29-13-51-50-090 RETAINER (4) to the damper (1).
(9) Install the damper (1) to the hydraulic pump (3).
(10) TORQUE the damper (1) to between 120 and 110 m.N (88.50 and 81.12 lbf.ft )
.
(11) Apply hydraulic fluid:
(12) Connect the hydraulic pressure hose (2) to the damper (1).
(13) Adjust the hydraulic pressure hose (2) to keep preload to a minimum. Make sure that there are no kinks in the hydraulic pressure hose (2).
(14) Hold the damper (1) with a WRENCH - STANDARD and TORQUE the union nut of the hydraulic pressure hose (2) to between 95 and 85 m.N (840.71 and 75.22 lbf.in ).
Use the triple torque procedure as follows:
(a) Torque to specified value.
(b) Loosen the nut.
(c) Torque to specified value.
(d) Torque to specified value again.
(15) Identify the tightened union nuts with a red line
(Ref. AMM TASK 20-23-22-910-001).
Subtask 29-13-46-710-053-A CAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE AND ADJACENT COMPONENTS.
CAUTION:
USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:
(1) Clean the component interfaces and the adjacent area.- ONE WRENCH TO HOLD THE UNION, AND
- ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the hydraulic line end-fittings are serviceable.
(4) Make sure that a CONTAINER 5 L (1.32 USGAL) is in position below the hydraulic pressure hose connection.
(5) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.
(6) Apply hydraulic fluid:
CAUTION:
DO NOT USE HIGH-DENSITY FLUID SKYDROL 500B-4 FOR A320NEO FAMILY. THE FLUID CAN CAUSE DAMAGE TO THE HYDRAULIC SYSTEM COMPONENTS.
(a) Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) on the new packings (5) and (6) and on the new retainers (4). (b) Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) on the threads of the damper (1).
(7) Install the new AIPC 29-13-51-50-080 PACKING (6) to the damper (1).
(8) Install the new AIPC 29-13-51-50-095 PACKING (5) with new AIPC 29-13-51-50-090 RETAINER (4) to the damper (1).
(9) Install the damper (1) to the hydraulic pump (3).
(10) TORQUE the damper (1) to between 120 and 110 m.N (88.50 and 81.12 lbf.ft )
. (11) Apply hydraulic fluid:
CAUTION:
DO NOT USE HIGH-DENSITY FLUID SKYDROL 500B-4 FOR A320NEO FAMILY. THE FLUID CAN CAUSE DAMAGE TO THE HYDRAULIC SYSTEM COMPONENTS.
(a) Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) on the threads of the hydraulic pressure hose (2). (12) Connect the hydraulic pressure hose (2) to the damper (1).
(13) Adjust the hydraulic pressure hose (2) to keep preload to a minimum. Make sure that there are no kinks in the hydraulic pressure hose (2).
(14) Hold the damper (1) with a WRENCH - STANDARD and TORQUE the union nut of the hydraulic pressure hose (2) to between 95 and 85 m.N (840.71 and 75.22 lbf.in )
. Use the triple torque procedure as follows:
(a) Torque to specified value.
(b) Loosen the nut.
(c) Torque to specified value.
(d) Torque to specified value again.
(15) Identify the tightened union nuts with a red line
(Ref. AMM TASK 20-23-22-910-001).
B. Operational Test
(1) Remove the container.
(2) Do the operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002).
(3) After the dry-motoring, make sure that there were no leaks from the hydraulic connections.
(4) Make sure that the level of the hydraulic fluid in the Yellow reservoir is correct. If necessary, fill the hydraulic reservoir (Ref. AMM TASK 12-12-29-611-001).
5. Close-up(1) Remove the container.
(2) Do the operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002).
(3) After the dry-motoring, make sure that there were no leaks from the hydraulic connections.
(4) Make sure that the level of the hydraulic fluid in the Yellow reservoir is correct. If necessary, fill the hydraulic reservoir (Ref. AMM TASK 12-12-29-611-001).
Subtask 29-13-46-410-054-A