W DOC AIRBUS | AMM A320F

Installation of the Filters of the Valve Blocks

TASK 27-84-53-400-003-A
Installation of the Filters of the Valve Blocks

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
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.
NOTE: The installation procedure for the filter of the valve block 26CV is specified. The installation procedure for the filter of the valve block 25CV is almost the same. If there are differences in the procedures, they are specified.
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
1
CONTAINER - HYDRAULIC FLUID RESISTANT
No specific
1
WARNING NOTICE(S)
No specific
Torque wrench: range to between 4.5 and 4.0 m.daN (33.19 and 29.50 lbf.ft ) T
98D27803000000
1
LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.02ABA1)
Phosphate Ester Hydraulic Fluid-General Power - -
No specific
lockwire, corrosion-resistant steel dia 0.6 mm (0.24 in.)
 C. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
2
O-RING
AIPC 27-84-53-01-060
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 12-12-29-611-001-A
Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 12-12-29-611-002-A
Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart
TASK 27-00-00-080-002-A
Removal of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 27-00-00-480-002-A
Installation of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 27-84-00-710-001-A
Operational Test of the Slat System
TASK 29-00-00-864-001-A
Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-14-00-614-001-A
Depressurization of the Hydraulic Reservoirs
TASK 29-14-00-614-002-A
Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01
Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
TASK 32-12-00-410-001-A
Close the Main Gear Doors after Access
3. Job Set-up
Subtask 27-84-53-860-061-A
A. Aircraft Maintenance Configuration
   (1) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is installed (Ref. AMM TASK 27-00-00-480-002) on the slat/flap control lever.
   (2) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position at the opening of the main door of the main gear.
   (3) Make sure that the Green and the Blue hydraulic systems are depressurized and put them in the maintenance configuration (Ref. AMM TASK 29-00-00-864-001).
   (4) Make sure that the the reservoirs of the Green and the Blue hydraulic systems are depressurized (Ref. AMM TASK 29-14-00-614-001).
   (5) Make sure that the WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic systems.
   (6) Make sure that a CONTAINER - HYDRAULIC FLUID RESISTANT is in position below the Power Control Unit (PCU) (1).
Subtask 27-84-53-865-057-A
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB06
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB01
** ON A/C ALL
121VUFLIGHT CONTROLS/SLT/CTL/SYS27CVR21
4. Procedure
Subtask 27-84-53-420-052-A
A. Installation of the Filter
   (1) Clean the component interfaces and the adjacent area.
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new AIPC 27-84-53-01-060 O-RING (2) and to the threads of the filter (3).
   (4) Install the new O-ring (2) on the filter (3).
   (5) Install the filter (3) complete with the O-ring (2) in the valve block (1).
   (6) Torque the filter (3) to between 4.5 and 4.0 m.daN (33.19 and 29.50 lbf.ft ) T.
   (7) Safety the filter (3) with the lockwire, corrosion-resistant steel dia 0.6 mm (0.24 in.).
Subtask 27-84-53-860-063-A
B. Prepraration for the Test
   (1) Pressurize the reservoirs of the Green and the Blue hydraulic systems (Ref. AMM TASK 29-14-00-614-002).
   (2) Make sure that the level of the fluid in the relevant hydraulic reservoir is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).
   (3) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION (Ref. AMM TASK 27-00-00-080-002) from the slat/flap control lever.
   (4) Make sure that the work area is clean and clear of tools and other items.
   (5) Remove the WARNING NOTICE(S).
Subtask 27-84-53-865-058-A
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB06
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB01
** ON A/C ALL
121VUFLIGHT CONTROLS/SLT/CTL/SYS27CVR21
Subtask 27-84-53-710-052-A
D. Test
   (1) Do the operational test of the slat system (Ref. AMM TASK 27-84-00-710-001).
   (2) Examine the filter (3) and make sure that there are no leaks.
5. Close-up
Subtask 27-84-53-860-062-A
A. Put the aircraft back to the serviceable condition.
   (1) Make sure that the level of the fluid in the relevant hydraulic reservoir is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).
   (2) Remove the container from below the valve block (1).
   (3) Remove the access platform(s).
Subtask 27-84-53-410-052-A
B. Close the main doors of the main gear (Ref. AMM TASK 32-12-00-410-001).
[Rev.10 from 2021] 2026.03.31 23:57:48 UTC
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