W DOC AIRBUS | AMM A320F

Installation of the Engine-Pump Case-Drain Filter Assembly

TASK 29-13-43-400-804-A
Installation of the Engine-Pump Case-Drain Filter Assembly

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
WARNING: DO NOT TOUCH THE HYDRAULIC SYSTEM COMPONENTS FOR A SHORT TIME AFTER THE ENGINE IS SHUTDOWN. THE ENGINE COMPONENTS STAY HOT FOR SOME TIME AND CAN CAUSE INJURY.
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.
ZONE: 445
FIN: 3084GM
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)-ADJUSTABLE
No specific
AR
CAP - PROTECTION
No specific
1
CONTAINER 5 L (1.32 USGAL)
No specific
AR
WARNING NOTICE(S)
No specific
AR
WRENCH - STANDARD
No specific
Torque wrench: range to between 164.6 and 149.6 lbf.in (1.86 and 1.69 m.daN ) T
No specific
Torque wrench: range to between 7.5 and 6.5 m.N (66.37 and 57.52 lbf.in ) T
No specific
Torque wrench: range to between 33.9 and 28.2 m.N (25.00 and 20.80 lbf.ft ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.02ABA1)
Phosphate Ester Hydraulic Fluid-General Power - -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
445
FAN AND ACCESSORY GEARBOX
195BB, 198CB
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
3
PACKING
EIPC 29-11-49-05-090
5
PACKING
EIPC 29-11-49-05-090
 E. Referenced Information
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
F Engine-Pump Case-Drain Filter Assembly
3. Job Set-up
Subtask 29-13-43-860-071-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 29-13-43-941-072-A
B. Safety Precautions
   (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.
   (2) Make sure that a WARNING NOTICE(S) is in position to tell persons not to pressurize the Yellow hydraulic system:
  • On the HYD section of panel 40VU
  • On the ground service panel of the Yellow hydraulic system.
   (3) Make sure that a WARNING NOTICE(S) is in position on access door 195BB to tell persons not to pressurize the reservoir 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 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.
   (5) On the ENG section of maintenance panel 50VU:
  • 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).
Subtask 29-13-43-010-069-A
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
   (2) Make sure that an ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE is in position at the engine.
4. Procedure
Subtask 29-13-43-420-059-B
A. Installation of the Case-Drain Filter Assembly
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.
THIS PREVENTS DAMAGE TO THE 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) Make sure that a CONTAINER 5 L (1.32 USGAL) is in position below the filter assembly (8).
   (5) Put the filter assembly (8) in position on the filter case-drain bracket (9).
   (6) Install the four bolts (4).
   (7) TORQUE the bolts (4) to between 7.5 and 6.5 m.N (66.37 and 57.52 lbf.in ) T.
   (8) 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 EIPC 29-11-49-05-090 PACKING (5) and on the threads of the union (7).
     (b) Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) on the threads of the coupling nut of the case drain hose (6).
   (9) Remove the CAP - PROTECTION from the ports of the filter assembly (8).
   (10) Put the new packing (5) on the union (7) and install the union (7) in the port of the filter assembly (8).
   (11) TORQUE the union (7) to between 33.9 and 28.2 m.N (25.00 and 20.80 lbf.ft ) T.
Use the triple torque procedure as follows:
     (a) Torque to the specified value.
     (b) Loosen until it is free.
     (c) Torque to the specified value.
     (d) Torque to the specified value again.
   (12) Remove the PLUG-BLANKING from each disconnected line end.
   (13) Connect the case drain hose (6) to the union (7) with your hand.
   (14) Hold the union (7) with a WRENCH - STANDARD and TORQUE the coupling nut of the case drain hose (6) to between 164.6 and 149.6 lbf.in (1.86 and 1.69 m.daN ) T.
   (15) 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 EIPC 29-11-49-05-090 PACKING (3) and on the threads of the union (2).
     (b) Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) on the threads of the coupling nut of the case drain tube (1).
   (16) Put the new packing (3) on the union (2) and install the union (2) in the port of the filter assembly (8).
   (17) TORQUE the union (2) to between 33.9 and 28.2 m.N (25.00 and 20.80 lbf.ft ) T.
Use the triple torque procedure as follows:
     (a) Torque to the specified value.
     (b) Loosen until it is free.
     (c) Torque to the specified value.
     (d) Torque to the specified value again.
   (18) Connect the case drain tube (1) to the union (2) with your hand.
   (19) Hold the union (2) with a WRENCH - STANDARD and TORQUE the coupling nut of the case drain tube (1) to between 164.6 and 149.6 lbf.in (1.86 and 1.69 m.daN ) T.
   (20) Identify the tightened union nuts with a red line
(Ref. AMM TASK 20-23-22-910-001).
Subtask 29-13-43-710-061-A
B. Operational Test
   (1) Do an operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002).
   (2) After the dry motoring, make sure that there were no leak from the filter assembly (8) and from the hydraulic connections.
   (3) Make sure that the level of the hydraulic fluid in the Yellow reservoir is correct. If necessary, fill the reservoir (Ref. AMM TASK 12-12-29-611-001).
5. Close-up
Subtask 29-13-43-942-063-A
A. Remove the Safety Precautions
   (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 29-13-43-410-066-A
B. Close Access
   (1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
     (a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
   (2) Close access doors 198CB and 195BB.
   (3) Remove the access platform(s).
[Rev.10 from 2021] 2026.04.01 00:21:44 UTC
"Aviabrain" 2025