W DOC AIRBUS | AMM A320F

Replacement of the Clogging Indicator

TASK 29-12-44-960-001-A
Replacement of the Clogging Indicator

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
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.
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)
No specific
1
CONTAINER 1 L (1/4 USGAL)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
2
WARNING NOTICE(S)
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.02ABA1)
Phosphate Ester Hydraulic Fluid-General Power - -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
197FB
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
7
PACKINGS
AIPC 29-12-44-01-050
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 12-12-29-611-001-A
Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 29-00-00-864-001-A
Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-00-00-910-002-A
Safety Procedures of the Hydraulic System
TASK 29-10-00-863-003-A
Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A-01
Pressurize the Blue Hydraulic System with the Blue Electric Pump
TASK 29-10-00-864-003-A
Depressurize the Blue Hydraulic System
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)
F LP Filter
3. Job Set-up
Subtask 29-12-44-865-052-A
A. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUHYD/HYD PWR/B WARN/& CTL2702GJC12
123VUB HYD/ELEC PUMP2701GJAB09
Subtask 29-12-44-010-052-A
B. Get Access
   (1) Open the access panel 197FB.
Subtask 29-12-44-860-053-A
C. Aircraft Maintenance Configuration
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
   (1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
   (2) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the Blue hydraulic system:
  • in the cockpit on the hydraulic section 40VU of the overhead panel
  • on the ground service panel of the Blue hydraulic system.
   (3) Make sure that the Blue hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001).
   (4) Depressurize the reservoir of the Blue hydraulic system (Ref. AMM TASK 29-14-00-614-001).
   (5) Put the ACCESS PLATFORM 3M (10 FT) in position.
   (6) Put the CONTAINER 1 L (1/4 USGAL) below the filter to collect the unwanted hydraulic fluid.
4. Procedure
Subtask 29-12-44-020-051-A
A. Removal of the Clogging Indicator
   (1) Loosen and remove the clogging indicator (5) from the filter head (1).
   (2) Remove and discard the packings (7) from the clogging indicator (5).
Subtask 29-12-44-560-051-A
B. Preparation for Installation
   (1) Lubricate the new AIPC 29-12-44-01-050 PACKINGS (7) with the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) and install them on the clogging indicator (5).
   (2) Lubricate the threads of the clogging indicator (5) with the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
Subtask 29-12-44-420-051-A
C. Installation of the Clogging Indicator
   (1) Clean the component interfaces and the adjacent area.
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Install the new clogging indicator (5) in the filter head (1).
Subtask 29-12-44-865-053-A
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUHYD/HYD PWR/B WARN/& CTL2702GJC12
123VUB HYD/ELEC PUMP2701GJAB09
Subtask 29-12-44-790-051-A
E. Test of the Filter Assembly
   (1) Remove the WARNING NOTICE(S).
   (2) Pressurize the reservoir of the Blue hydraulic system (Ref. AMM TASK 29-14-00-614-002).
   (3) Pressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-863-003).
   (4) Make sure that the clogging indicator stays in.
   (5) Make sure that no hydraulic fluid comes out of the filter assembly.
   (6) Make sure that the fluid level in the reservoir of the Blue hydraulic system is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001).
   (7) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003).
5. Close-up
Subtask 29-12-44-860-054-A
A. Put the aircraft back to the serviceable condition.
   (1) Remove the container from below the filter.
   (2) Make sure that the work area is clean and clear of tools and other items.
   (3) Remove the access platform(s).
Subtask 29-12-44-410-052-A
B. Close Access
   (1) Close the access panel 197FB.
[Rev.10 from 2021] 2026.04.01 07:54:23 UTC
"Aviabrain" 2025