DOC AIRBUS | AMM A320FRemoval of the Check Valve Restrictor Tubes (for Engine 2)
TASK 29-13-49-000-007-A
Removal of the Check Valve Restrictor Tubes (for Engine 2)
This task is effective post SB RA32178-1
This task is for the removal of the check valve restrictor tubes for engine 2 1000EM2. For the removal of the check valve restrictor tubes for engine 1 1000EM1 (Ref.Task 29-11-49-000-00700).
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 29-13-49-860-081-A ** ON A/C NOT FOR ALL
Subtask 29-13-49-020-068-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 00:22:39 UTC
Removal of the Check Valve Restrictor Tubes (for Engine 2)
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.
1. Reason for the JobThis task is effective post SB RA32178-1
This task is for the removal of the check valve restrictor tubes for engine 2 1000EM2. For the removal of the check valve restrictor tubes for engine 1 1000EM1 (Ref.Task 29-11-49-000-00700).
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE |
| No specific | AR | CONTAINER 5 L (1.32 USGAL) |
| No specific | AR | COVER - PROTECTION |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 195BB, 447AL, 448AR |
| REFERENCE | DESIGNATION |
|---|---|
| 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 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
Check Valve Restrictor TubesSubtask 29-13-49-860-081-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(2) Depressurize the Yellow hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).
(3) Put WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic system:
Subtask 29-13-49-941-081-A ** ON A/C NOT FOR ALL (1) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(2) Depressurize the Yellow hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).
(3) Put WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic system:
- on the ground service panel 198CB.
B. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(3) Put WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic system:
(6) Put a CONTAINER 5 L (1.32 USGAL) below the tee fitting on the upper case drain tube.
Subtask 29-13-49-865-063-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
- put WARNING NOTICE(S) to tell persons not to start the engine 2.
(3) Put WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic system:
- in the cockpit, on the HYD section of the overhead panel 40VU.
- make sure that the ON legend of the ENG/FADEC GND PWR/2 pushbutton switch is off.
(6) Put a CONTAINER 5 L (1.32 USGAL) below the tee fitting on the upper case drain tube.
C. Open, safety and tag this(these) circuit breaker(s):
Subtask 29-13-49-010-069-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/Y HYD/PUMP ENG2/MONG | 3700GD | Q37 |
D. Get Access
(1) Open the fan-cowl doors:
- 447AL 448AR (Ref. AMM TASK 71-13-00-010-040).
(2) Open the access door 195BB.
(3) Put the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position at the engine.
4. Procedure(1) Open the fan-cowl doors:
- 447AL 448AR (Ref. AMM TASK 71-13-00-010-040).
(2) Open the access door 195BB.
(3) Put the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position at the engine.
Subtask 29-13-49-020-068-A ** ON A/C NOT FOR ALL
A. Removal of the Check Valve Restrictor Tubes
(1) Disconnect the tube (15) from the tee fitting on the upper case drain tube. Let the fluid drain into the container below the tee fitting.
(2) Remove the bolt (5), washer (20), nut (25), and clamp (10) that attach the tube (15) to the bracket at engine flange STA185 (B5).
(3) Remove the bolt (5), washer (20), nut (25), and clamp (10) that attach the tube (15) to the bracket at engine flange STA199 (A2).
(4) Disconnect the tube (30) from the tube (15).
(5) Remove the bolts (5), washers (20), nuts (25), and clamps (10) that attach the tube (30) to the brackets at engine flange STA199 (A2). (3 locations)
(6) Disconnect the tube (30) from the HCU.
(7) Put COVER - PROTECTION on the tubes, the HCU, and the tee fitting.
(8) Remove the tubes (15) and (30) from the engine.
(9) Remove the container from below the tee fitting.
(1) Disconnect the tube (15) from the tee fitting on the upper case drain tube. Let the fluid drain into the container below the tee fitting.
(2) Remove the bolt (5), washer (20), nut (25), and clamp (10) that attach the tube (15) to the bracket at engine flange STA185 (B5).
(3) Remove the bolt (5), washer (20), nut (25), and clamp (10) that attach the tube (15) to the bracket at engine flange STA199 (A2).
(4) Disconnect the tube (30) from the tube (15).
(5) Remove the bolts (5), washers (20), nuts (25), and clamps (10) that attach the tube (30) to the brackets at engine flange STA199 (A2). (3 locations)
(6) Disconnect the tube (30) from the HCU.
(7) Put COVER - PROTECTION on the tubes, the HCU, and the tee fitting.
(8) Remove the tubes (15) and (30) from the engine.
(9) Remove the container from below the tee fitting.