DOC AIRBUS | AMM A320FInstallation of the Thrust Reverser Actuation System (TRAS) Filter Module [PW11]
TASK 78-31-02-400-801-A
Installation of the Thrust Reverser Actuation System (TRAS) Filter Module
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 78-31-02-941-052-A ** ON A/C NOT FOR ALL
Subtask 78-31-02-420-050-A ** ON A/C NOT FOR ALL
Subtask 78-31-02-863-051-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:31:07 UTC
Installation of the Thrust Reverser Actuation System (TRAS) Filter Module
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING:
ALWAYS USE APPLICABLE GLOVES TO TOUCH HOT PARTS. HOT PARTS CAN CAUSE INJURY TO PERSONS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.PU6-0003) | lubricant |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 471CL | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 482CR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 54-53-11-000-804-A | Removal of the Pylon-to-Wing Access Panels and Doors |
| TASK 54-53-11-400-804-A | Installation of the Pylon-to-Wing Access Panels and Doors |
| TASK 71-00-00-860-833-A | Procedure to Prevent Engine Motoring |
| TASK 78-30-00-040-805-A | Deactivation of the Thrust Reverser System for Ground Maintenance |
| TASK 78-30-00-440-805-A | Reactivation of the Thrust Reverser System after Ground Maintenance |
| TASK 78-31-00-710-805-A | Operational Test of Thrust Reverser with MCDU |
| TASK 78-31-00-710-805-A-01 | Thrust Reverser Cycling Test (Engine Running) |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 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 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) |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 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 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) |
Thrust Reverser Actuation System (TRAS) Filter ModuleSubtask 78-31-02-941-052-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833)
Subtask 78-31-02-864-052-A ** ON A/C NOT FOR ALL (1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833)
B. Depressurization of the Aircraft Hydraulic Systems
(1) Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the applicable system.
(a) On the HYD/FUEL panel 40VU of the overhead panel
(b) On the ground service panel of the applicable hydraulic system.
(2) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(a) Make sure that the Green hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-001).
(b) Make sure that the reservoir of the Green hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
(a) Make sure that the Yellow hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-002).
(b) Make sure that the reservoir of the Yellow hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).
Subtask 78-31-02-040-052-A ** ON A/C NOT FOR ALL (1) Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the applicable system.
(a) On the HYD/FUEL panel 40VU of the overhead panel
(b) On the ground service panel of the applicable hydraulic system.
(2) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(a) Make sure that the Green hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-001).
(b) Make sure that the reservoir of the Green hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
(a) Make sure that the Yellow hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-002).
(b) Make sure that the reservoir of the Yellow hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).
C. Deactivation of the Thrust Reverser System for Maintenance
Subtask 78-31-02-010-052-A ** ON A/C NOT FOR ALL 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) Make sure that you did the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-805). D. Get Access
(1) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(2) Make sure that the pylon access panel is removed (Ref. AMM TASK 54-53-11-000-804):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
471CL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
482CR
4. Procedure(1) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(2) Make sure that the pylon access panel is removed (Ref. AMM TASK 54-53-11-000-804):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
471CL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
482CR
Subtask 78-31-02-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the TRAS Filter Module
(2) Attach the filter module (1) to the filter bracket with the four bolts (2), four washers (3) and four nuts (4).
(3) TORQUE the bolts (2) to between 93.8 and 72.5 lbf.in (1.06 and 0.82 m.daN )
.
(4) Apply material as follows:
(5) Connect the inlet tube to the filter module (1).
(6) Tighten the connecting nut on the inlet tube finger tight.
(7) Connect the outlet tube to the filter module (1).
(8) Tighten the connecting nut on the outlet tube finger tight.
(9) TORQUE the connecting nuts on the inlet and outlet tubes to between 522 and 478 lbf.in (5.90 and 5.40 m.daN ).
5. Close-upCAUTION:
YOU MUST NOT LET HYDRAULIC FLUID FALL ON THE ENGINE. UNWANTED HYDRAULIC FLUID MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT- FREE CLOTH. THE HYDRAULIC FLUID CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND SOME PARTS.
CAUTION:
MAKE SURE THE FLOW ARROW ON THE FILTER MODULE POINTS FORWARD. IF THE FLOW ARROW POINTS IN THE INCORRECT DIRECTION, THE FILTER MODULE WILL NOT OPERATE CORRECTLY AND CAN CAUSE DAMAGE TO EQUIPMENT.
CAUTION:
USE A SECOND WRENCH TO HOLD THE MATING PARTS WHEN YOU LOOSEN OR TIGHTEN THE TUBE OR HOSE NUTS. IF YOU DO NOT OBEY THIS INSTRUCTION, YOU CAN TWIST THE TUBES OR HOSES OR CAUSE DAMAGE TO THEM.
(1) Removal of the protection covers CAUTION:
REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.
(a) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine. (2) Attach the filter module (1) to the filter bracket with the four bolts (2), four washers (3) and four nuts (4).
(3) TORQUE the bolts (2) to between 93.8 and 72.5 lbf.in (1.06 and 0.82 m.daN )
. (4) Apply material as follows:
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(a) Apply a thin layer of lubricant (Material No.PU6-0003) to the sleeve surfaces, conical sealing surfaces, and threads of the connecting nut on the inlet tube, outlet tube, and filter module (1). (5) Connect the inlet tube to the filter module (1).
(6) Tighten the connecting nut on the inlet tube finger tight.
(7) Connect the outlet tube to the filter module (1).
(8) Tighten the connecting nut on the outlet tube finger tight.
(9) TORQUE the connecting nuts on the inlet and outlet tubes to between 522 and 478 lbf.in (5.90 and 5.40 m.daN )
. Subtask 78-31-02-863-051-A ** ON A/C NOT FOR ALL
A. Pressurization of the Aircraft Hydraulic Systems
(1) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(a) Pressurize the reservoir of the Green hydraulic system (Ref. AMM TASK 29-14-00-614-002).
(2) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
(a) Pressurize the reservoir of the Yellow hydraulic system (Ref. AMM TASK 29-14-00-614-002).
Subtask 78-31-02-440-051-A ** ON A/C NOT FOR ALL (1) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(a) Pressurize the reservoir of the Green hydraulic system (Ref. AMM TASK 29-14-00-614-002).
(2) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
(a) Pressurize the reservoir of the Yellow hydraulic system (Ref. AMM TASK 29-14-00-614-002).
B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 78-31-02-710-051-A ** ON A/C NOT FOR ALL C. Do the operational test of the thrust reverser with the Multipurpose Control and Display Unit (MCDU) (bleeding) (Ref. AMM TASK 78-31-00-710-805).
Subtask 78-31-02-410-051-A ** ON A/C NOT FOR ALL D. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel on the pylon (Ref. AMM TASK 54-53-11-400-804):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
471CL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
482CR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel on the pylon (Ref. AMM TASK 54-53-11-400-804):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
471CL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
482CR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).