W DOC AIRBUS | AMM A320F

Removal of the Self Sealing Half-Coupling of the Green Pump Suction

TASK 29-11-39-000-809-A
Removal of the Self Sealing Half-Coupling of the Green Pump Suction

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND THE RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
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: 413
FIN: 1700GM
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 3M (10 FT)- ADJUSTABLE
No specific
AR
CAP - PROTECTION
No specific
1
CONTAINER 20L (5 USGAL)
No specific
AR
PLUG - BLANKING
No specific
AR
WARNING NOTICE(S)
98D27803000000
1
LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
413
UPPER FWD PYLON
195BB, 197CB
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 27-00-00-480-002-A
Installation of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 27-50-00-866-009-A-01
Retraction of the Flaps/Slats on the Ground
TASK 29-10-00-864-001-A
Depressurize 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 78-30-00-040-807-A
Deactivation of the Thrust Reverser System for Nacelle Maintenance (ICU)
F Self Sealing Half-Coupling of the Green Pump Suction
3. Job Set-up
Subtask 29-11-39-860-065-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)
   (3) Make sure that the slats are in the fully retracted position (Ref. AMM TASK 27-50-00-866-009).
Subtask 29-11-39-941-062-A
B. Safety Precautions
   (1) On AIR COND panel 30VU:
  • Make sure that the APU BLEED pushbutton switch is released (ON legend off).
  • Put a WARNING NOTICE(S) in position to tell persons not to operate the APU BLEED pushbutton switch.
   (2) Open access door 197CB.
     (a) On the ground service panel, put WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system.
   (3) On the HYD section of panel 40VU:
     (a) Put WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system.
   (4) Open access door 195BB.
     (a) Put WARNING NOTICE(S) in position to tell persons not to pressurize the reservoir of the Green 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).
   (7) On FLAPS panel 114VU:
  • Install the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION on the flap/slat control lever (Ref. AMM TASK 27-00-00-480-002).
  • Put a WARNING NOTICE(S) on the flap/slat control lever to tell persons not to operate the flap/slat controls.
Subtask 29-11-39-010-061-A
C. Get Access
   (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
Subtask 29-11-39-040-052-A
D. Deactivation of the Thrust Reverser for Maintenance
WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
   (1) Do the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-807).
Subtask 29-11-39-010-062-A
E. Get Access
   (1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at the pylon.
4. Procedure
Subtask 29-11-39-020-057-A
A. Removal of the Self Sealing Half-Coupling of the Green Pump Suction
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 the CONTAINER 20L (5 USGAL) in position below the self sealing half-coupling (2) to collect the remaining fluid.
   (2) Disconnect the self sealing half-coupling (1) from the self sealing half-coupling (2).
   (3) Remove the self sealing half-coupling (2) from the hydraulic receptacle (4).
   (4) Remove and discard the packing (3).
   (5) Put the PLUG-BLANKING in each disconnected line end.
   (6) Put the CAP - PROTECTION on the two ends of the self sealing half-coupling (2).
[Rev.10 from 2021] 2026.04.01 00:15:43 UTC
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