W DOC AIRBUS | AMM A320F

Removal of the Engine-Pump Case-Drain Filter Assembly

TASK 29-13-43-000-804-A
Removal 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.
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
PLUG - BLANKING
No specific
AR
WARNING NOTICE(S)
No specific
AR
WRENCH - STANDARD
 B. 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
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 29-10-00-864-002-A
Depressurize 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
F Engine-Pump Case-Drain Filter Assembly
3. Job Set-up
Subtask 29-13-43-860-070-A
A. Aircraft Maintenance Configuration
   (1) Make sure that the Yellow hydraulic system is depressurized.
(Ref. AMM TASK 29-10-00-864-002)
   (2) Depressurize the reservoir of the Yellow hydraulic system.
(Ref. AMM TASK 29-14-00-614-001)
Subtask 29-13-43-941-071-A
B. Safety Precautions
   (1) On AIR COND panel 30VU:
  • Make sure that the APU BLEED pushbutton switch is released (the ON legend is off).
  • Put a WARNING NOTICE(S) in position to tell persons not to operate this pushbutton switch.
   (2) Open access door 198CB.
     (a) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic system on the ground service panel.
   (3) On the HYD section of panel 40VU:
     (a) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic system.
   (4) Open access door 195BB:
     (a) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the reservoir of the Yellow hydraulic system.
   (5) 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.
   (6) 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.
  • Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
Subtask 29-13-43-010-068-A
C. Get Access
   (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
     (a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
   (2) Put an ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position at the engine.
4. Procedure
Subtask 29-13-43-020-059-A
A. Removal 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) Put a CONTAINER 5 L (1.32 USGAL) below the filter assembly (8).
   (2) Hold the union (7) with a WRENCH - STANDARD and disconnect the case drain hose (6).
   (3) Drain the hydraulic fluid from the case drain hose (6) into the container.
   (4) Put the PLUG-BLANKING in each disconnected line end.
   (5) Remove the union (7) from the filter assembly (8).
   (6) Remove and discard the packing (5).
   (7) Hold the union (2) with a WRENCH - STANDARD and disconnect the case drain tube (1).
   (8) Drain the hydraulic fluid from the case drain tube (1) into the container.
   (9) Put the PLUG-BLANKING in each disconnected line end.
   (10) Remove the union (2) from the filter assembly (8).
   (11) Remove and discard the packing (3).
   (12) Put CAP - PROTECTION on the ports of the filter assembly (8).
   (13) Remove the four bolts (4) that attach the filter assembly (8) to the filter case-drain bracket (9).
   (14) Remove the filter assembly (8) from the filter case-drain bracket (9).
[Rev.10 from 2021] 2026.04.01 00:21:42 UTC
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