DOC AIRBUS | AMM A320FRemoval of the Thrust Reverser Hydraulic Filter Assembly [CFMB]
TASK 78-37-51-000-004-A
Removal of the Thrust Reverser Hydraulic Filter Assembly
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 78-37-51-941-070-A ** ON A/C NOT FOR ALL
Subtask 78-37-51-020-061-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:26:51 UTC
Removal of the Thrust Reverser Hydraulic Filter Assembly
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING:
WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.
CAUTION:
MAKE SURE THERE IS NO UNWANTED MATERIAL IN THE PORTS AND ORIFICES OR DAMAGE CAN OCCUR.
CAUTION:
YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS LUBRICANT.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | CLOTH - PROTECTIVE |
| No specific | 1 | CONTAINER 10 L(2 1/2 USGAL) |
| No specific | AR | PLUG - BLANKING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 29-14-00-614-001-A | Depressurization of the Hydraulic Reservoirs |
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
Thrust Reverser Hydraulic Filter AssemblySubtask 78-37-51-941-070-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) in position to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).
Subtask 78-37-51-010-086-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) in position to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).
B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Put an ACCESS PLATFORM 1M(3 FT) in position on the left side of the engine.
Subtask 78-37-51-865-063-A ** ON A/C NOT FOR ALL (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Put an ACCESS PLATFORM 1M(3 FT) in position on the left side of the engine.
C. Open, safety and tag this(these) circuit breaker(s):
Subtask 78-37-51-614-068-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENG2/REV/LOCK | 1EG2 | N45 |
| 121VU | ENG1/REV/LOCK | 1EG1 | N44 |
D. Depressurization of the Hydraulic Reservoirs
(1) For engine 1:
4. Procedure(1) For engine 1:
- Depressurize the reservoir of the Green hydraulic system
(Ref. AMM TASK 29-14-00-614-001)
- Depressurize the reservoir of the Yellow hydraulic system.
(Ref. AMM TASK 29-14-00-614-001)
Subtask 78-37-51-020-061-A ** ON A/C NOT FOR ALL
A. Removal of the Thrust Reverser Hydraulic Filter Assembly
(1) Remove the bolt (5), the washer (10) and the clamp (15).
(2) Disconnect the hydraulic tubing as follows:
(b) Disconnect the pressure supply tube (20) from the hydraulic filter (30) and let the hydraulic fluid drain into the container.
(c) Disconnect and remove the pressure supply tube (25) (located between the filter (30) and the isolation valve (35)).
(d) Remove the container and put a CLOTH - PROTECTIVE below the isolation valve.
(e) Put PLUG - BLANKING on the disconnected line ends and the valve and filter ports.
(3) Remove the four bolts (40) and the four washers (45), that attach the filter (30) to the support plate (50).
(4) Remove the filter (30) from the support plate (50).
(5) Remove the protective cloth from the engine.
(1) Remove the bolt (5), the washer (10) and the clamp (15).
(2) Disconnect the hydraulic tubing as follows:
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION:
USE A SECOND WRENCH TO APPLY COUNTER TORQUE TO THE NIPPLE WHEN YOU DISCONNECT/CONNECT HYDRAULIC LINES ON NIPPLES.
(a) Put a CONTAINER 10 L(2 1/2 USGAL) below the hydraulic tubes. (b) Disconnect the pressure supply tube (20) from the hydraulic filter (30) and let the hydraulic fluid drain into the container.
(c) Disconnect and remove the pressure supply tube (25) (located between the filter (30) and the isolation valve (35)).
(d) Remove the container and put a CLOTH - PROTECTIVE below the isolation valve.
(e) Put PLUG - BLANKING on the disconnected line ends and the valve and filter ports.
(3) Remove the four bolts (40) and the four washers (45), that attach the filter (30) to the support plate (50).
(4) Remove the filter (30) from the support plate (50).
(5) Remove the protective cloth from the engine.