DOC AIRBUS | AMM A320FInstallation of the HP Manifold of the Yellow Hydraulic System
TASK 29-13-14-400-001-A
Installation of the HP Manifold of the Yellow Hydraulic System
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 29-13-14-860-053-A
Subtask 29-13-14-560-050-B
Subtask 29-13-14-860-052-A
[Rev.10 from 2021]
2026.04.01 00:19:54 UTC
Installation of the HP Manifold of the Yellow Hydraulic System
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:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
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.02ABA1) | Phosphate Ester Hydraulic Fluid-General Power - - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 196BB, 198CB |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 24 | O-RING | AIPC 29-13-14-02-080 |
| 56 | O-RINGS | AIPC 29-13-14-02-140 |
| 57 | O-RINGS | AIPC 29-13-14-02-140 |
| 55 | BACK-UP RINGS | AIPC 29-13-14-02-150 |
| 58 | BACKUP-RINGS | AIPC 29-13-14-02-150 |
| 38 | BACKUP-RINGS | AIPC 29-13-14-02-160 |
| 54 | BACK-UP RINGS | AIPC 29-13-14-02-160 |
| 15 | SQUARE-SECTION SEALS | AIPC 29-13-14-02-170 |
| 40 | SQUARE-SECTION SEALS | AIPC 29-13-14-02-170 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-12-29-611-001-A | Fill the Hydraulic Fluid Reservoir with a Hand Pump |
| TASK 20-23-21-911-001-A | Removal/Installation of the Bobbins from their Housings and Installation of O-rings, Square Seals, and Back-up Rings on the Bobbins |
| TASK 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| TASK 24-41-00-861-002-A-01 | Energize the Aircraft Electrical Circuits from the APU |
| TASK 24-41-00-861-002-A-02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| TASK 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| TASK 24-41-00-862-002-A-01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| TASK 24-41-00-862-002-A-02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| TASK 27-92-17-000-002-A | Removal of the Flight Control Pressure Switch |
| TASK 27-92-17-400-002-A | Installation of the Flight Control Pressure Switch |
| 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 29-10-00-863-002-A | Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart |
| TASK 29-10-00-864-002-A | Depressurize the Yellow Hydraulic System |
| TASK 29-13-32-000-001-A | Removal of the Pressure Relief Valve of the Yellow Hydraulic System |
| TASK 29-13-32-400-001-A | Installation of the Pressure Relief Valve of the Yellow Hydraulic System |
| TASK 29-13-34-000-001-A | Removal of the Fluid Sampling Valve of the Yellow Hydraulic System |
| TASK 29-13-34-400-001-A | Installation of the Fluid Sampling Valve of 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) |
| TASK 29-23-00-860-001-A | Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU) |
| TASK 29-23-00-860-002-A | Connection of the Isolation Coupling of the Power Transfer Unit (PTU) |
| TASK 29-32-11-000-003-A | Removal of the Hydraulic Pressure Transducer |
| TASK 29-32-11-400-003-A | Installation of the Hydraulic Pressure Transducer |
| TASK 29-32-12-000-003-A | Removal of the System Pressure Switch |
| TASK 29-32-12-400-003-A | Installation of the System Pressure Switch |
| TASK 31-60-00-860-001-A | EIS Start Procedure |
| TASK 31-60-00-860-002-A | EIS Stop Procedure |
HP Manifold with P/N series 1553A9900Subtask 29-13-14-860-053-A
A. Aircraft Maintenance Configuration
(2) Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001).
(3) Make sure that the reservoir of the Yellow hydraulic system is depressurized.
(Ref. AMM TASK 29-14-00-614-001).
(4) Make sure that the WARNING NOTICE(S) are in position to tell persons not to pressurize the Yellow hydraulic system:
(6) Make sure that the access door 196BB is open.
(7) Make sure that the isolation coupling of the Power Transfer Unit (PTU) is disconnected (Ref. AMM TASK 29-23-00-860-001).
(8) Make sure that the CONTAINER 5 L (1.32 USGAL) is in position below the location of the HP manifold.
Subtask 29-13-14-865-051-A WARNING:
OBEY THE HYDRAULIC SAFETY PROCEDURES.
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002). (2) Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001).
(3) Make sure that the reservoir of the Yellow hydraulic system is depressurized.
(Ref. AMM TASK 29-14-00-614-001).
(4) Make sure that the WARNING NOTICE(S) are in position to tell persons not to pressurize the Yellow hydraulic system:
- In the cockpit on the hydraulic section 40VU of the overhead panel
- On the ground service panel of the Yellow hydraulic system.
(6) Make sure that the access door 196BB is open.
(7) Make sure that the isolation coupling of the Power Transfer Unit (PTU) is disconnected (Ref. AMM TASK 29-23-00-860-001).
(8) Make sure that the CONTAINER 5 L (1.32 USGAL) is in position below the location of the HP manifold.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | HYD/HYD/PRESS/XMTR | 1841GN | C11 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| ** ON A/C ALL | |||
| 121VU | HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST | 1881GP | N35 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N31 |
| ** ON A/C ALL | |||
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
Subtask 29-13-14-560-050-B
A. Preparation of the Replacement Component
(1) Remove the components which are attached to the removed HP manifold as follows:
1 Hold the HP filter 3048GM and remove the bolts (35), (36) and the washers (37).
2 Remove the HP filter 3048GM from the manifold (17).
(b) Remove the relief valve 3063GM (Ref. AMM TASK 29-13-32-000-001).
(c) Remove the hydraulic pressure transducer 3065GN (Ref. AMM TASK 29-32-11-000-003).
(d) Remove the system pressure switch 3151GN (Ref. AMM TASK 29-32-12-000-003).
(e) Remove the flight-control pressure switch 10CE3 (Ref. AMM TASK 27-92-17-000-002).
(f) Remove the fluid sampling valve 3187GM (Ref. AMM TASK 29-13-34-000-001).
(g) Remove the check valve 3022GM as follows:
1 Loosen the check valve 3022GM and remove it with the O-ring (24).
2 Remove and discard the O-ring (24).
(h) Remove the four bobbins (14) and (39) from the manifold (17) (Ref. AMM TASK 20-23-21-911-001).
(j) Remove and discard these items from the bobbins:
(l) Install blanking plugs in the open ports of all of the removed components.
(2) Install the removed components onto the replacement manifold (17) as follows:
(a) Make sure that the threaded inserts (18) and cylindrical pin (16) are installed in the ports of the manifold (17). If not, install them in the manifold (17) (Ref. AMM TASK 20-23-21-911-001).
(b) Remove the blanking plugs from the ports of the manifold (17) and the components.
(c) Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new O-rings, back-up rings, square-section seals and the threads of the unions.
(d) Put the two new AIPC 29-13-14-02-160 BACK-UP RINGS (54) in position on the sides of the bobbins (14) without the identification grooves (equipment side).
(e) Put the two new AIPC 29-13-14-02-170 SQUARE-SECTION SEALS (15) in position on the sides of the bobbins (14) without the identification grooves (equipment side).
(f) Put the two new AIPC 29-13-14-02-150 BACK-UP RINGS (55) in position on the sides of the bobbins (14) with the identification grooves (manifold side).
(g) Put the two new AIPC 29-13-14-02-140 O-RINGS (56) in position on the sides of the bobbins (14) with the identification grooves (manifold side).
(h) Install the two bobbins (14) with the identification grooves in the ports of the manifold (17) (Ref. AMM TASK 20-23-21-911-001).
(i) Put the two new AIPC 29-13-14-02-160 BACKUP-RINGS (38) in position on the sides of the bobbins (39) without the identification grooves (equipment side).
(j) Put the two new AIPC 29-13-14-02-170 SQUARE-SECTION SEALS (40) in position on the sides of the bobbins (39) without the identification grooves (equipment side).
(k) Put the two new AIPC 29-13-14-02-150 BACKUP-RINGS (58) in position on the sides of the bobbins (39) with the identification grooves (manifold side).
(l) Put the two new AIPC 29-13-14-02-140 O-RINGS (57) in position on the sides of the bobbins (39) with the identification grooves (manifold side).
(m) Install the two bobbins (39) with the identification grooves in the port of the manifold (17) (Ref. AMM TASK 20-23-21-911-001).
(n) Install the HP filter 3048GM as follows:
1 Put the HP filter 3048GM in the installation position on the manifold (17).
2 Install the four washers (37) and the four bolts (35) and (36).
3 TORQUE the four bolts (35) and (36) to between 1.8 and 1.6 m.daN (13.27 and 11.80 lbf.ft )
.
(o) Install the check valve 3022GM as follows:
1 Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new AIPC 29-13-14-02-080 O-RING (24).
2 Put the new O-ring (24) in position on the check valve 3022GM.
3 Install the check valve 3022GM in port E of the manifold (17).
4 Torque the check valve 3022GM as follows:
a TORQUE the check valve 3022GM to between 14.2 and 12.9 m.daN (104.72 and 95.13 lbf.ft ).
(p) Install the fluid sampling valve 3187GM (Ref. AMM TASK 29-13-34-400-001).
(q) Install the system pressure switch 3151GN (Ref. AMM TASK 29-32-12-400-003).
(r) Install the flight-control pressure switch 10CE3 (Ref. AMM TASK 27-92-17-400-002).
(s) Install the hydraulic pressure transducer 3065GN (Ref. AMM TASK 29-32-11-400-003).
(t) Install the relief valve 3063GM (Ref. AMM TASK 29-13-32-400-001).
Subtask 29-13-14-420-050-B (1) Remove the components which are attached to the removed HP manifold as follows:
NOTE: These components are hydraulically attached to the HP manifold with bobbins:
(a) Remove the HP filter 3048GM as follows: - The HP filter 3048GM
- The relief valve 3063GM
1 Hold the HP filter 3048GM and remove the bolts (35), (36) and the washers (37).
2 Remove the HP filter 3048GM from the manifold (17).
(b) Remove the relief valve 3063GM (Ref. AMM TASK 29-13-32-000-001).
(c) Remove the hydraulic pressure transducer 3065GN (Ref. AMM TASK 29-32-11-000-003).
(d) Remove the system pressure switch 3151GN (Ref. AMM TASK 29-32-12-000-003).
(e) Remove the flight-control pressure switch 10CE3 (Ref. AMM TASK 27-92-17-000-002).
(f) Remove the fluid sampling valve 3187GM (Ref. AMM TASK 29-13-34-000-001).
(g) Remove the check valve 3022GM as follows:
1 Loosen the check valve 3022GM and remove it with the O-ring (24).
2 Remove and discard the O-ring (24).
(h) Remove the four bobbins (14) and (39) from the manifold (17) (Ref. AMM TASK 20-23-21-911-001).
NOTE: There is one size of bobbins.
(i) Install a PLUG - BLANKING in the open ports of the manifold (17). (j) Remove and discard these items from the bobbins:
- The square section seals (15) and (40)
- The O-rings (56) and (57)
- The back-up rings (54), (55), (58) and (38).
(l) Install blanking plugs in the open ports of all of the removed components.
(2) Install the removed components onto the replacement manifold (17) as follows:
(a) Make sure that the threaded inserts (18) and cylindrical pin (16) are installed in the ports of the manifold (17). If not, install them in the manifold (17) (Ref. AMM TASK 20-23-21-911-001).
(b) Remove the blanking plugs from the ports of the manifold (17) and the components.
(c) Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new O-rings, back-up rings, square-section seals and the threads of the unions.
(d) Put the two new AIPC 29-13-14-02-160 BACK-UP RINGS (54) in position on the sides of the bobbins (14) without the identification grooves (equipment side).
(e) Put the two new AIPC 29-13-14-02-170 SQUARE-SECTION SEALS (15) in position on the sides of the bobbins (14) without the identification grooves (equipment side).
(f) Put the two new AIPC 29-13-14-02-150 BACK-UP RINGS (55) in position on the sides of the bobbins (14) with the identification grooves (manifold side).
(g) Put the two new AIPC 29-13-14-02-140 O-RINGS (56) in position on the sides of the bobbins (14) with the identification grooves (manifold side).
(h) Install the two bobbins (14) with the identification grooves in the ports of the manifold (17) (Ref. AMM TASK 20-23-21-911-001).
(i) Put the two new AIPC 29-13-14-02-160 BACKUP-RINGS (38) in position on the sides of the bobbins (39) without the identification grooves (equipment side).
(j) Put the two new AIPC 29-13-14-02-170 SQUARE-SECTION SEALS (40) in position on the sides of the bobbins (39) without the identification grooves (equipment side).
(k) Put the two new AIPC 29-13-14-02-150 BACKUP-RINGS (58) in position on the sides of the bobbins (39) with the identification grooves (manifold side).
(l) Put the two new AIPC 29-13-14-02-140 O-RINGS (57) in position on the sides of the bobbins (39) with the identification grooves (manifold side).
(m) Install the two bobbins (39) with the identification grooves in the port of the manifold (17) (Ref. AMM TASK 20-23-21-911-001).
(n) Install the HP filter 3048GM as follows:
1 Put the HP filter 3048GM in the installation position on the manifold (17).
2 Install the four washers (37) and the four bolts (35) and (36).
3 TORQUE the four bolts (35) and (36) to between 1.8 and 1.6 m.daN (13.27 and 11.80 lbf.ft )
. (o) Install the check valve 3022GM as follows:
1 Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new AIPC 29-13-14-02-080 O-RING (24).
2 Put the new O-ring (24) in position on the check valve 3022GM.
3 Install the check valve 3022GM in port E of the manifold (17).
4 Torque the check valve 3022GM as follows:
a TORQUE the check valve 3022GM to between 14.2 and 12.9 m.daN (104.72 and 95.13 lbf.ft )
. (p) Install the fluid sampling valve 3187GM (Ref. AMM TASK 29-13-34-400-001).
(q) Install the system pressure switch 3151GN (Ref. AMM TASK 29-32-12-400-003).
(r) Install the flight-control pressure switch 10CE3 (Ref. AMM TASK 27-92-17-400-002).
(s) Install the hydraulic pressure transducer 3065GN (Ref. AMM TASK 29-32-11-400-003).
(t) Install the relief valve 3063GM (Ref. AMM TASK 29-13-32-400-001).
B. Installation of the HP Manifold
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking plugs from the pipe connections.
(4) Make sure that the hydraulic line end-fittings are serviceable.
(5) Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the line end-fittings.
(6) Put the manifold (17) in position on the aircraft and at the same time install the five distance pieces (21). Hold the manifold (17) and distance pieces (21) in position.
(7) Install the five bolts (19) and the washers (20).
(8) Tighten the bolts (19).
(9) Connect the tee-connector (1) to the union (3).
(10) TORQUE the pipe end-fitting (2) to between 14.2 and 12.9 m.daN (104.72 and 95.13 lbf.ft ).
(11) Connect the pipe (25) to the union (27).
(12) TORQUE the pipe end-fitting (26) to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft ).
(13) If the pipe end-fitting (26) leaks during pressure testing, you can loosen the pipe end-fitting (26), and TORQUE it to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft ) in one step.
(14) Connect the pipe (22) to the check valve 3022GM.
(15) TORQUE the pipe end-fitting (23) to between 8.9 and 8.1 m.daN (65.63 and 59.73 lbf.ft ).
(16) Connect the pipe (29) to the union (31).
(17) TORQUE the pipe end-fitting (30) to between 8.3 and 7.5 m.daN (61.21 and 55.31 lbf.ft ).
(18) Install the pipe (46) between the tee-connector (44) and the union (48).
(19) Torque the pipe end-fittings as follows:
(a) TORQUE the pipe end-fittings (47) and (45) to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft ).
(20) Remove the blanking caps from the electrical connectors.
(21) Make sure that all the electrical connections are clean and in the correct condition.
Subtask 29-13-14-865-052-A CAUTION:
USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL LOOSEN OR TIGHTEN THE UNION TOO MUCH.
CAUTION:
YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS LUBRICANT.
(1) Clean the component interfaces and the adjacent area.(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking plugs from the pipe connections.
(4) Make sure that the hydraulic line end-fittings are serviceable.
(5) Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the line end-fittings.
(6) Put the manifold (17) in position on the aircraft and at the same time install the five distance pieces (21). Hold the manifold (17) and distance pieces (21) in position.
(7) Install the five bolts (19) and the washers (20).
(8) Tighten the bolts (19).
(9) Connect the tee-connector (1) to the union (3).
(10) TORQUE the pipe end-fitting (2) to between 14.2 and 12.9 m.daN (104.72 and 95.13 lbf.ft )
. (11) Connect the pipe (25) to the union (27).
(12) TORQUE the pipe end-fitting (26) to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft )
. (13) If the pipe end-fitting (26) leaks during pressure testing, you can loosen the pipe end-fitting (26), and TORQUE it to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft )
in one step. (14) Connect the pipe (22) to the check valve 3022GM.
(15) TORQUE the pipe end-fitting (23) to between 8.9 and 8.1 m.daN (65.63 and 59.73 lbf.ft )
. (16) Connect the pipe (29) to the union (31).
(17) TORQUE the pipe end-fitting (30) to between 8.3 and 7.5 m.daN (61.21 and 55.31 lbf.ft )
. (18) Install the pipe (46) between the tee-connector (44) and the union (48).
(19) Torque the pipe end-fittings as follows:
(a) TORQUE the pipe end-fittings (47) and (45) to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft )
. (20) Remove the blanking caps from the electrical connectors.
(21) Make sure that all the electrical connections are clean and in the correct condition.
CAUTION:
MAKE SURE THAT THE BONDING STRAP(S) IS(ARE) CONNECTED BEFORE YOU CONNECT THE ELECTRICAL CONNECTOR(S).
(22) Connect the electrical connectors (5), (41), (42) and (43) to the receptacles on the manifold (17). C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 29-13-14-860-051-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | HYD/HYD/PRESS/XMTR | 1841GN | C11 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| ** ON A/C ALL | |||
| 121VU | HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST | 1881GP | N35 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N31 |
| ** ON A/C ALL | |||
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
D. Preparation for the Test
(1) Pressurize the reservoir of the Yellow hydraulic system (Ref. AMM TASK 29-14-00-614-002).
(2) Make sure that the fluid level in the reservoir of the Yellow hydraulic system is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001).
(3) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(4) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(5) On the ECAM control panel on the center pedestal, push the HYD pushbutton. Make sure that the HYD page on the system (lower) display comes on.
Subtask 29-13-14-710-050-A (1) Pressurize the reservoir of the Yellow hydraulic system (Ref. AMM TASK 29-14-00-614-002).
(2) Make sure that the fluid level in the reservoir of the Yellow hydraulic system is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001).
(3) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(4) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(5) On the ECAM control panel on the center pedestal, push the HYD pushbutton. Make sure that the HYD page on the system (lower) display comes on.
E. Do this test:
5. Close-up| ACTION | RESULT |
|---|---|
| 1.Pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002). | |
| 2.Examine the HP manifold and the pipe connections for leaks. | No leaks. |
| 3.Compare the hydraulic pressure indication on the ECAM system (lower) display with the indication on the pressure gage 3072GM of the Yellow power accumulator. | The digital pressure indication agrees with the indication on the pressure gage 3072GM. |
4.On the panel 50VU:
| On the panel 50VU:
|
5.On the panel 50VU:
| On the panel 50VU:
|
| 6.Control the hydraulic supply to reduce the Yellow system pressure. Compare the indication of the ECAM system display with the indication on the pressure gage 3072GM. | The ECAM pressure indication agrees with the indication on the pressure gage 3072GM. |
Subtask 29-13-14-860-052-A
A. Put the aircraft back to the serviceable condition.
(1) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(2) Make sure that the reservoir of the Yellow hydraulic system is pressurized (Ref. AMM TASK 29-14-00-614-002).
(3) Make sure that the fluid level in the Yellow hydraulic system is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001).
(4) Connect the isolation coupling of the Power Transfer Unit (PTU) (Ref. AMM TASK 29-23-00-860-002).
(5) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(6) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(7) Remove the container from below the HP manifold.
(8) Remove the warning notices from the cockpit and the ground service panel.
(9) Make sure that the work area is clean and clear of tools and other items.
(10) Close the access door 196BB.
(11) Close the access door 198CB.
Subtask 29-13-14-865-053-A (1) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(2) Make sure that the reservoir of the Yellow hydraulic system is pressurized (Ref. AMM TASK 29-14-00-614-002).
(3) Make sure that the fluid level in the Yellow hydraulic system is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001).
(4) Connect the isolation coupling of the Power Transfer Unit (PTU) (Ref. AMM TASK 29-23-00-860-002).
(5) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(6) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(7) Remove the container from below the HP manifold.
(8) Remove the warning notices from the cockpit and the ground service panel.
(9) Make sure that the work area is clean and clear of tools and other items.
(10) Close the access door 196BB.
(11) Close the access door 198CB.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | HYD/HYD/PRESS/XMTR | 1841GN | C11 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| ** ON A/C ALL | |||
| 121VU | HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST | 1881GP | N35 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N31 |
| ** ON A/C ALL | |||
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |