DOC AIRBUS | AMM A320FFunctional Check to Monitor Internal Leak Rate of Yellow and Green Hydraulic Systems
TASK 29-10-00-220-001-A
Functional Check to Monitor Internal Leak Rate of Yellow and Green Hydraulic Systems
To prevent damage to the anti-ice heat elements:
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 29-10-00-010-085-A ** ON A/C NOT FOR ALL
Subtask 29-10-00-220-050-A ** ON A/C NOT FOR ALL
Subtask 29-10-00-860-067-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 00:14:17 UTC
Functional Check to Monitor Internal Leak Rate of Yellow and Green Hydraulic Systems
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
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.
1. Reason for the JobTo prevent damage to the anti-ice heat elements:
- When the LGCIU 1 or LGCIU 2 circuit breakers are open
or - When the A/C is lifted on jacks.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 2 | FLOWMETER 20.00 L.MN (5.2833 US GAL.MN) |
| No specific | 1 | PLUG - BLANKING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| 610007AB | 1 | TOOL-MEASURE,HYDRAULIC FLOW |
| 61007010-01 | 1 | USF FIRMWARE FOR SA |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 147 | MAIN GEAR WELL AND HYDRAULIC COMPARTMENT |
| 190 | BELLY FAIR, AIR CONDITIONING & HYD COMPT |
| 196 | HYDRAULIC COMPT AND FAIRINGS |
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| 196BB, 197CB, 198CB |
| REFERENCE | DESIGNATION |
|---|---|
| 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 29-00-00-280-001-A | Check of the Internal Leakage of the Green Hydraulic System |
| TASK 29-00-00-280-003-A | Check of the Internal Leakage of the Yellow Hydraulic System |
| TASK 29-00-00-280-004-A | Check of the Internal Leakage of the Power Transfer Unit (PTU) |
| TASK 29-10-00-863-001-A | Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart |
| TASK 29-10-00-863-002-A | Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart |
| TASK 29-10-00-864-001-A | Depressurize the Green Hydraulic System |
| TASK 29-10-00-864-002-A | Depressurize the Yellow Hydraulic System |
| 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 29-23-00-863-001-A | Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump |
| TASK 29-23-00-864-001-A | Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU |
| TASK 29-24-00-863-001-A | Pressurize the Yellow Hydraulic System with the Electric Pump |
| TASK 29-24-00-864-001-A | Depressurize the Yellow Hydraulic System |
| TASK 31-60-00-860-001-A | EIS Start Procedure |
| TASK 31-60-00-860-002-A | EIS Stop Procedure |
| TASK 32-12-00-010-001-A | Open the Main Gear Doors for Access |
| TASK 32-12-00-410-001-A | Close the Main Gear Doors after Access |
| TASK 32-31-00-710-005-A | Operational Check to Ensure Safety Valve Closes at 260 Knots |
| TASK 32-31-00-710-005-A-01 | Operational Check to Ensure Safety Valve Closes at 260 Knots |
| TASK 32-31-00-710-005-A-02 | Operational Check to Ensure Safety Valve Closes at 260 Knots |
Green Hydraulic System - Complete SectionSubtask 29-10-00-010-085-A ** ON A/C NOT FOR ALL
A. Get Access to the Green Hydraulic System
(1) Open the right door of the main gear (Ref. AMM TASK 32-12-00-010-001).
Subtask 29-10-00-010-086-A ** ON A/C NOT FOR ALL Subtask 29-10-00-860-113-A ** ON A/C NOT FOR ALL (1) Open the right door of the main gear (Ref. AMM TASK 32-12-00-010-001).
C. The Subtask that follows shows the circuit breaker table for the Green hydraulic system.
Subtask 29-10-00-865-097-A D. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 29-10-00-860-114-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/ELAC1/NORM/SPLY | 15CE1 | B11 |
| 49VU | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B08 |
| 49VU | AUTO FLT/FAC1/28VDC | 5CC1 | B04 |
| 49VU | AUTO FLT/FAC1/26VAC | 14CC1 | B03 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/ELAC1/NORM/SPLY | 15CE1 | B06 |
| 49VU | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B03 |
| 49VU | AUTO FLT/FAC1/28VDC | 5CC1 | H10 |
| 49VU | AUTO FLT/FAC1/26VAC | 14CC1 | H09 |
| ** ON A/C ALL | |||
| 105VU | FLIGHT CONTROLS/ELAC2/STBY SPLY | 16CE2 | A02 |
| 105VU | FLT CTL/ELAC1/STBY SPLY | 16CE1 | A01 |
| 105VU | FLT CTL/SEC1/STBY SPLY | 22CE | B01 |
| 121VU | HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST | 1881GP | N35 |
| 121VU | HYDRAULIC/SOL VALVES/G/Y/PTU | 1801GL | N34 |
| 121VU | FLIGHT CONTROLS/SEC3/SPLY | 21CE3 | Q19 |
| 121VU | FLIGHT CONTROLS/SEC2/SPLY | 21CE2 | Q18 |
| 121VU | FLIGHT CONTROLS/ELAC2/NORM/SPLY | 15CE2 | R20 |
E. The subtask that follows shows the circuit breaker table for the Yellow hydraulic system.
Subtask 29-10-00-865-098-A F. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 29-10-00-860-115-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/ELAC1/NORM/SPLY | 15CE1 | B11 |
| 49VU | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B08 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/ELAC1/NORM/SPLY | 15CE1 | B06 |
| 49VU | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B03 |
| ** ON A/C ALL | |||
| 105VU | FLIGHT CONTROLS/ELAC2/STBY SPLY | 16CE2 | A02 |
| 105VU | FLT CTL/ELAC1/STBY SPLY | 16CE1 | A01 |
| 105VU | FLT CTL/SEC1/STBY SPLY | 22CE | B01 |
| 121VU | AUTO FLT/FAC2/28VDC | 5CC2 | M19 |
| 121VU | AUTO FLT/FAC2/26VAC | 14CC2 | M18 |
| 121VU | HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST | 1881GP | N35 |
| 121VU | HYDRAULIC/SOL VALVES/G/Y/PTU | 1801GL | N34 |
| 121VU | FLIGHT CONTROLS/SEC3/SPLY | 21CE3 | Q19 |
| 121VU | FLIGHT CONTROLS/SEC2/SPLY | 21CE2 | Q18 |
| 121VU | FLIGHT CONTROLS/ELAC2/NORM/SPLY | 15CE2 | R20 |
G. The subtask that follows shows the circuit breaker table for the Green hydraulic system.
Subtask 29-10-00-865-099-A H. Open, safety and tag this(these) circuit breaker(s):
Subtask 29-10-00-860-066-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | L/G/LGCIU/SYS1/NORM | 1GA | C09 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | HYDRAULIC/G HYD/PUMP ENG1/CTL | 1701GK | H12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/CTL | 1701GK | R35 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R34 |
| ** ON A/C ALL | |||
| 121VU | HYDRAULIC/LGCIU/SYS2 | 2GA | Q35 |
| 121VU | HYDRAULIC/LGCIU/SYS1/GRND SPLY | 52GA | Q34 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |
I. Aircraft Maintenance Configuration
(1) Make sure that the aircraft is in this configuration:
Subtask 29-10-00-860-109-A ** ON A/C NOT FOR ALL (1) Make sure that the aircraft is in this configuration:
- The spoilers 1 thru 5 retracted
- All servo controls in their neutral positions.
J. Aircraft Maintenance Configuration for the Green Hydraulic System
(1) Disconnect connector 49GA-A from safety valve 49GA to de-energize safety valve 49GA (valve closed).
(2) Install a PLUG - BLANKING on the disconnected electrical connector.
(3) Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
1GA, 2GA, 52GA, 1701GK, 1702GK.
(4) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(5) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(6) On the ECAM control panel on the center pedestal, push the F/CTL pushbutton (P/B). Make sure that the lower display unit (DU) shows the F/CTL page.
(7) Pressurize the Green hydraulic system from the Yellow hydraulic system through the PTU with the Yellow electric pump (Ref. AMM TASK 29-23-00-863-001).
(8) On overhead panel 23VU, make sure that the ELAC 1, SEC 1 and FAC 1 pushbutton switches (P/BSW) are set to on (the OFF and FAULT lights are off).
(9) On overhead panel 24VU, make sure that the ELAC 2, SEC 2 and SEC3 (P/BSW) are set to on (the OFF and FAULT lights are off).
(10) On overhead panel 40VU, set the PTU P/BSW to AUTO (the OFF and FAULT lights are off).
(11) Operate the flight control surfaces.
(b) Keep all of the control surfaces stopped in the 0 deg. (retracted) position during measurement of internal leakage.
(c) Do the checks for the internal leakage with the hydraulic fluid at its usual working temperature of between 20 deg.C (68.00 deg.F) and 60 deg.C (140.00 deg.F).
Subtask 29-10-00-860-110-A ** ON A/C NOT FOR ALL (1) Disconnect connector 49GA-A from safety valve 49GA to de-energize safety valve 49GA (valve closed).
(2) Install a PLUG - BLANKING on the disconnected electrical connector.
(3) Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
1GA, 2GA, 52GA, 1701GK, 1702GK.
(4) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(5) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(6) On the ECAM control panel on the center pedestal, push the F/CTL pushbutton (P/B). Make sure that the lower display unit (DU) shows the F/CTL page.
(7) Pressurize the Green hydraulic system from the Yellow hydraulic system through the PTU with the Yellow electric pump (Ref. AMM TASK 29-23-00-863-001).
(8) On overhead panel 23VU, make sure that the ELAC 1, SEC 1 and FAC 1 pushbutton switches (P/BSW) are set to on (the OFF and FAULT lights are off).
(9) On overhead panel 24VU, make sure that the ELAC 2, SEC 2 and SEC3 (P/BSW) are set to on (the OFF and FAULT lights are off).
(10) On overhead panel 40VU, set the PTU P/BSW to AUTO (the OFF and FAULT lights are off).
(11) Operate the flight control surfaces.
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.
(a) Operate the sidestick and the rudder pedals to put the control surfaces in the 0 deg. position (spoilers retracted). (b) Keep all of the control surfaces stopped in the 0 deg. (retracted) position during measurement of internal leakage.
(c) Do the checks for the internal leakage with the hydraulic fluid at its usual working temperature of between 20 deg.C (68.00 deg.F) and 60 deg.C (140.00 deg.F).
K. Aircraft Maintenance Configuration for the Yellow Hydraulic System
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) In the main landing gear compartment, disconnect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-001).
(3) Set the ECAM system to on (Ref. AMM TASK 31-60-00-860-001).
(4) On the ECAM control panel on the center pedestal, push the F/CTL pushbutton (P/B). Make sure the lower display unit (DU) shows the F/CTL page.
(5) Pressurize the Yellow hydraulic system with the electric pump (Ref. AMM TASK 29-24-00-863-001).
(6) On overhead panel 23VU, make sure that the ELAC 1 and SEC 1 pushbutton switches P/BSW are set to ON (the OFF and FAULT lights are off).
(7) On overhead panel 24VU, make sure that the ELAC 2, SEC 2, SEC 3 and FAC 2 P/BSW are set to ON (the OFF and FAULT lights are off).
(8) On overhead panel 40VU set the PTU P/BSW to OFF (the OFF light comes on).
(10) Keep all of the control surfaces stopped in the 0 deg (retracted) position during measurement of internal leakage.
(11) Do the checks of internal leakage with the hydraulic fluid at its usual working temperature of between 20 deg.C (68.00 deg.F) and 60 deg.C (140.00 deg.F).
4. Procedure(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) In the main landing gear compartment, disconnect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-001).
(3) Set the ECAM system to on (Ref. AMM TASK 31-60-00-860-001).
(4) On the ECAM control panel on the center pedestal, push the F/CTL pushbutton (P/B). Make sure the lower display unit (DU) shows the F/CTL page.
(5) Pressurize the Yellow hydraulic system with the electric pump (Ref. AMM TASK 29-24-00-863-001).
(6) On overhead panel 23VU, make sure that the ELAC 1 and SEC 1 pushbutton switches P/BSW are set to ON (the OFF and FAULT lights are off).
(7) On overhead panel 24VU, make sure that the ELAC 2, SEC 2, SEC 3 and FAC 2 P/BSW are set to ON (the OFF and FAULT lights are off).
(8) On overhead panel 40VU set the PTU P/BSW to OFF (the OFF light comes on).
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.
(9) Operate the sidestick and rudder pedals to put the control surfaces in the 0 deg position (spoilers retracted). (10) Keep all of the control surfaces stopped in the 0 deg (retracted) position during measurement of internal leakage.
(11) Do the checks of internal leakage with the hydraulic fluid at its usual working temperature of between 20 deg.C (68.00 deg.F) and 60 deg.C (140.00 deg.F).
Subtask 29-10-00-220-050-A ** ON A/C NOT FOR ALL
A. Do this Functional Test for the Green Hydraulic System
(1) Use a ground service cart with a FLOWMETER 20.00 L.MN (5.2833 US GAL.MN), calibrated to +/- 1.5% over full range, to pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001).
(2) Make a record of the flow rate.
(3) Make sure that the flow rate is not more than 9 l (2.3775 USgal)/minute.
(4) If the flow rate is too high, do the full check of internal leakage to find the cause (Ref. AMM TASK 29-00-00-280-001) (Ref. AMM TASK 29-00-00-280-004).
(5) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001).
Subtask 29-10-00-220-052-A ** ON A/C NOT FOR ALL (1) Use a ground service cart with a FLOWMETER 20.00 L.MN (5.2833 US GAL.MN), calibrated to +/- 1.5% over full range, to pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001).
(2) Make a record of the flow rate.
(3) Make sure that the flow rate is not more than 9 l (2.3775 USgal)/minute.
(4) If the flow rate is too high, do the full check of internal leakage to find the cause (Ref. AMM TASK 29-00-00-280-001) (Ref. AMM TASK 29-00-00-280-004).
(5) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001).
B. Do this Functional Test for the Yellow Hydraulic System
(1) Use a ground service cart with a FLOWMETER 20.00 L.MN (5.2833 US GAL.MN), calibrated to +/- 1.5% over full range, to pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002).
(2) Make a record of the flow rate.
(3) Make sure that the flow rate is not more than 10 l (2.6417 USgal)/minute.
(4) If the flow rate is too high, do the full check of internal leakage to find the cause (Ref. AMM TASK 29-00-00-280-003) (Ref. AMM TASK 29-00-00-280-004).
(5) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
Subtask 29-10-00-220-050-B ** ON A/C NOT FOR ALL (1) Use a ground service cart with a FLOWMETER 20.00 L.MN (5.2833 US GAL.MN), calibrated to +/- 1.5% over full range, to pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002).
(2) Make a record of the flow rate.
(3) Make sure that the flow rate is not more than 10 l (2.6417 USgal)/minute.
(4) If the flow rate is too high, do the full check of internal leakage to find the cause (Ref. AMM TASK 29-00-00-280-003) (Ref. AMM TASK 29-00-00-280-004).
(5) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
C. Do this functional test for the Green hydraulic system:
(a) In the main gear compartment, disconnect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-001).
(b) On the overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/G P/BSW is set to ON (the OFF light is off).
(c) On the overhead panel 40VU, set the PTU P/BSW to OFF (the OFF light comes on).
(d) Open access door 197CB.
(e) Connect a ground service cart with the FLOWMETER 20.00 L.MN (5.2833 US GAL.MN), calibrated to +/- 1.5% over full range, to pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001).
(f) Monitor the flow shown on the ground supply flow meter.
(g) Make sure that the flow rate is not more than 9 l.min (2.3775 USgal.mn).
(h) If the internal leakage is too much:
1 Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001).
2 Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
3 Disconnect the ground supply from the aircraft ground test connections.
4 Install the blanking caps on the ground test connections.
5 Pressurize the Green hydraulic system from Yellow hydraulic system through the PTU with the Yellow electric pump (Ref. AMM TASK 29-23-00-863-001).
6 Close access door 197CB.
7 Do the leakage check of all sections of the Green hydraulic system to find the cause of high leakage (Ref. AMM TASK 29-00-00-280-001).
(2) Measurement of the Green hydraulic system (complete section) internal leakage with the USF:
(a) On overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/G P/BSW is set to on (the OFF light is off).
(b) Refer to the lower DU of the ECAM (HYD page) to make sure that the solenoid valve operation is correct (the flow arrow of the Green hydraulic system is green and the system name is white).
(c) On overhead panel 40VU, make sure that the PTU P/BSW is set to AUTO (the OFF and FAULT lights are off).
(d) Refer to the ground instruction manual of the USF to make sure that the 61007010-01 USF FIRMWARE FOR SA is installed.
(e) Clean the tube (1) between the identification tapes (2) with a Textile-Lint free Cotton - (Material No.14SBA1) .
(f) Do not use detergents to clean the leakage transducer (5). Remove traces of acoustic coupling compound from the leakage transducer (5) and clean the leakage transducer (5) with a Textile-Lint free Cotton - (Material No.14SBA1) .
(g) Apply a thin layer of the acoustic coupling compound (part of USF FLUXUS GST 6108, 610007AB TOOL-MEASURE,HYDRAULIC FLOW) to the contact surfaces of the leakage transducer (5).
(h) Install the leakage transducer (5) between the identification tapes (2) on the pipe (1):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to the stop.
2 Put the leakage transducer (5) in position on the pipe (1) between the identification tapes (2) and push it tightly on the pipe (1).
3 Push the knurled screw (6) in and attach the fastener strap (4) around the pipe (1) with the threaded element (3).
4 Put the fastener strap (4) through the upper slot of the strap clamp (7) and then through the lower one.
5 Make sure that the fastener strap (4) has the correct tension. And make sure that the knurled screw (6) is pushed in up to the stop.
6 Tighten the knurled screw (6) to attach the leakage transducer (5) to the pipe (1).
(i) Connect the leakage transducer cable (8) to the transmitter (9).
(j) Refer to the ground instruction manual of the USF to set:
(l) Monitor the flow on the USF display. It must not be more than 9.0 l.min (2.38 USgal.mn).
(m) Make a record of the flow rate.
(n) If the internal leakage is more than 9.0 l.min (2.38 USgal.mn) do the measurements of internal leakage to find the cause (s) of the high internal leakage (Ref. AMM TASK 29-00-00-280-001) (Ref. AMM TASK 29-00-00-280-004).
(o) Remove the leakage transducer (5):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to disconnect the leakage transducer (5) from the pipe (1).
2 Push the knurled screw (6) in and disconnect the fastener strap (4) from the strap clamp (7).
3 Remove the leakage transducer (5) from the pipe (1).
(p) Disconnect the leakage transducer cable (8) from the transmitter (9).
(3) Open, safety and tag this(these) circuit breaker(s):
1GA, 2GA, 52GA, 1701GK, 1702GK.
(4) Remove the blanking plug from electrical connector 49GA-A.
(5) Connect electrical connector 49GA-A to safety valve 49GA.
Subtask 29-10-00-220-052-B ** ON A/C NOT FOR ALL NOTE: You can do this test with or without an Ultrasonic Flowmeter (USF). If the internal leakage is out of limits then the USF must be used to prevent an Aircraft On Ground (AOG) condition.
(1) Measure the internal leakage of the Green hydraulic system (complete) without a USF: (a) In the main gear compartment, disconnect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-001).
(b) On the overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/G P/BSW is set to ON (the OFF light is off).
(c) On the overhead panel 40VU, set the PTU P/BSW to OFF (the OFF light comes on).
(d) Open access door 197CB.
(e) Connect a ground service cart with the FLOWMETER 20.00 L.MN (5.2833 US GAL.MN), calibrated to +/- 1.5% over full range, to pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001).
(f) Monitor the flow shown on the ground supply flow meter.
(g) Make sure that the flow rate is not more than 9 l.min (2.3775 USgal.mn).
(h) If the internal leakage is too much:
1 Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001).
2 Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
3 Disconnect the ground supply from the aircraft ground test connections.
4 Install the blanking caps on the ground test connections.
5 Pressurize the Green hydraulic system from Yellow hydraulic system through the PTU with the Yellow electric pump (Ref. AMM TASK 29-23-00-863-001).
6 Close access door 197CB.
7 Do the leakage check of all sections of the Green hydraulic system to find the cause of high leakage (Ref. AMM TASK 29-00-00-280-001).
(2) Measurement of the Green hydraulic system (complete section) internal leakage with the USF:
(a) On overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/G P/BSW is set to on (the OFF light is off).
(b) Refer to the lower DU of the ECAM (HYD page) to make sure that the solenoid valve operation is correct (the flow arrow of the Green hydraulic system is green and the system name is white).
(c) On overhead panel 40VU, make sure that the PTU P/BSW is set to AUTO (the OFF and FAULT lights are off).
(d) Refer to the ground instruction manual of the USF to make sure that the 61007010-01 USF FIRMWARE FOR SA is installed.
(e) Clean the tube (1) between the identification tapes (2) with a Textile-Lint free Cotton - (Material No.14SBA1) .
(f) Do not use detergents to clean the leakage transducer (5). Remove traces of acoustic coupling compound from the leakage transducer (5) and clean the leakage transducer (5) with a Textile-Lint free Cotton - (Material No.14SBA1) .
(g) Apply a thin layer of the acoustic coupling compound (part of USF FLUXUS GST 6108, 610007AB TOOL-MEASURE,HYDRAULIC FLOW) to the contact surfaces of the leakage transducer (5).
(h) Install the leakage transducer (5) between the identification tapes (2) on the pipe (1):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to the stop.
2 Put the leakage transducer (5) in position on the pipe (1) between the identification tapes (2) and push it tightly on the pipe (1).
3 Push the knurled screw (6) in and attach the fastener strap (4) around the pipe (1) with the threaded element (3).
4 Put the fastener strap (4) through the upper slot of the strap clamp (7) and then through the lower one.
5 Make sure that the fastener strap (4) has the correct tension. And make sure that the knurled screw (6) is pushed in up to the stop.
6 Tighten the knurled screw (6) to attach the leakage transducer (5) to the pipe (1).
(i) Connect the leakage transducer cable (8) to the transmitter (9).
(j) Refer to the ground instruction manual of the USF to set:
- The serial number of the aircraft
- The input location code on the USF to numeric code: 26780443 (Green complete section).
(l) Monitor the flow on the USF display. It must not be more than 9.0 l.min (2.38 USgal.mn).
(m) Make a record of the flow rate.
(n) If the internal leakage is more than 9.0 l.min (2.38 USgal.mn) do the measurements of internal leakage to find the cause (s) of the high internal leakage (Ref. AMM TASK 29-00-00-280-001) (Ref. AMM TASK 29-00-00-280-004).
(o) Remove the leakage transducer (5):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to disconnect the leakage transducer (5) from the pipe (1).
2 Push the knurled screw (6) in and disconnect the fastener strap (4) from the strap clamp (7).
3 Remove the leakage transducer (5) from the pipe (1).
(p) Disconnect the leakage transducer cable (8) from the transmitter (9).
(3) Open, safety and tag this(these) circuit breaker(s):
1GA, 2GA, 52GA, 1701GK, 1702GK.
(4) Remove the blanking plug from electrical connector 49GA-A.
(5) Connect electrical connector 49GA-A to safety valve 49GA.
D. Do this functional test for the Yellow hydraulic system:
(a) On the overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/Y P/BSW is set to ON (the OFF light is off).
(b) On the overhead panel 40VU, make sure that the PTU P/BSW is set to OFF (the OFF light is on).
(c) Open access door 198CB.
(d) Connect a ground service cart with the FLOWMETER 20.00 L.MN (5.2833 US GAL.MN), calibrated to +/- 1.5% over full range, to pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002).
(e) Monitor the flow shown on the ground supply flow meter.
(f) Make sure that the flow rate is not more than 10 l.min (2.6417 USgal.mn).
(g) If the internal leakage is too much:
1 Depressurize the Yellow hydraulic system
(Ref. AMM TASK 29-10-00-864-002).
2 Disconnect the ground supply from the aircraft ground test connections.
3 Install the blanking caps on the ground test connections.
4 Pressurize the Yellow hydraulic system with the Yellow electric pump (Ref. AMM TASK 29-24-00-863-001).
5 Close access door 198CB.
6 Do the leakage check of all sections of the Yellow hydraulic system to find the cause of high leakage (Ref. AMM TASK 29-00-00-280-003).
(2) Measure the Yellow hydraulic system (complete section) internal leakage with the USF:
(a) On overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/Y P/BSW is set to on (the OFF light is off).
(b) Refer to the lower DU of the ECAM (HYD page) to make sure that the solenoid valve operation is correct (the flow arrow of the Yellow hydraulic system is green and the system name is white).
(c) On overhead panel 40VU, make sure that the PTU P/BSW is set to OFF (the OFF light is on).
(d) Refer to the ground instruction manual of the USF to make sure that the 61007010-01 USF FIRMWARE FOR SA is installed.
(e) Clean the tube (1) between the identification tapes (2) with a Textile-Lint free Cotton - (Material No.14SBA1) .
(f) Do not use detergents to clean the leakage transducer (5). Remove traces of acoustic coupling compound from the leakage transducer (5) and clean it with a Textile-Lint free Cotton - (Material No.14SBA1) .
(g) Apply a thin layer of the acoustic coupling compound (part of USF FLUXUS GST 6108, 610007AB TOOL-MEASURE,HYDRAULIC FLOW) to the contact surfaces of the leakage transducer (5).
(h) Install the leakage transducer (5) between the identification tapes (2) on the pipe (1):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to the stop.
2 Put the leakage transducer (5) in position on the pipe (1) between the identification tapes (2) and push it tightly on the pipe (1).
3 Push the knurled screw (6) in and attach the fastener strap (4) around the pipe (1) with the threaded element (3).
4 Put the fastener strap (4) through the upper slot of the strap clamp (7) and then through the lower one.
5 Make sure that the fastener strap (4) has the correct tension. And make sure that the knurled screw (6) is pushed in up to the stop.
6 Tighten the knurled screw (6) to attach the leakage transducer (5) to the pipe (1).
(i) Connect the leakage transducer cable (8) to the transmitter (9).
(j) Refer to the ground instruction manual of the USF to set:
(l) Monitor the flow on the USF display. It must not be more than 7.3 l.min (1.93 USgal.mn).
(m) Make a record of the flow rate.
(n) If the internal leakage is more than 7.3 l.min (1.93 USgal.mn) do the measurements of internal leakage to find the cause (s) of the high internal leakage (Ref. AMM TASK 29-00-00-280-003) (Ref. AMM TASK 29-00-00-280-004).
(o) Remove the leakage transducer (5):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to disconnect the leakage transducer (5) from the pipe (1).
2 Push the knurled screw (6) in and disconnect the fastener strap (4) from the strap clamp (7).
3 Remove the leakage transducer (5) from the pipe (1).
(p) Disconnect the leakage transducer cable (8) from the transmitter (9).
Subtask 29-10-00-220-050-C ** ON A/C NOT FOR ALL NOTE: You can do this test with or without an Ultrasonic Flowmeter (USF). If the internal leakage is out of limits then the USF must be used to prevent an Aircraft On Ground (AOG) condition.
(1) Measure the internal leakage of the Yellow hydraulic system (complete) without a USF: (a) On the overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/Y P/BSW is set to ON (the OFF light is off).
(b) On the overhead panel 40VU, make sure that the PTU P/BSW is set to OFF (the OFF light is on).
(c) Open access door 198CB.
(d) Connect a ground service cart with the FLOWMETER 20.00 L.MN (5.2833 US GAL.MN), calibrated to +/- 1.5% over full range, to pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002).
(e) Monitor the flow shown on the ground supply flow meter.
(f) Make sure that the flow rate is not more than 10 l.min (2.6417 USgal.mn).
(g) If the internal leakage is too much:
1 Depressurize the Yellow hydraulic system
(Ref. AMM TASK 29-10-00-864-002).
2 Disconnect the ground supply from the aircraft ground test connections.
3 Install the blanking caps on the ground test connections.
4 Pressurize the Yellow hydraulic system with the Yellow electric pump (Ref. AMM TASK 29-24-00-863-001).
5 Close access door 198CB.
6 Do the leakage check of all sections of the Yellow hydraulic system to find the cause of high leakage (Ref. AMM TASK 29-00-00-280-003).
(2) Measure the Yellow hydraulic system (complete section) internal leakage with the USF:
(a) On overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/Y P/BSW is set to on (the OFF light is off).
(b) Refer to the lower DU of the ECAM (HYD page) to make sure that the solenoid valve operation is correct (the flow arrow of the Yellow hydraulic system is green and the system name is white).
(c) On overhead panel 40VU, make sure that the PTU P/BSW is set to OFF (the OFF light is on).
(d) Refer to the ground instruction manual of the USF to make sure that the 61007010-01 USF FIRMWARE FOR SA is installed.
(e) Clean the tube (1) between the identification tapes (2) with a Textile-Lint free Cotton - (Material No.14SBA1) .
(f) Do not use detergents to clean the leakage transducer (5). Remove traces of acoustic coupling compound from the leakage transducer (5) and clean it with a Textile-Lint free Cotton - (Material No.14SBA1) .
(g) Apply a thin layer of the acoustic coupling compound (part of USF FLUXUS GST 6108, 610007AB TOOL-MEASURE,HYDRAULIC FLOW) to the contact surfaces of the leakage transducer (5).
(h) Install the leakage transducer (5) between the identification tapes (2) on the pipe (1):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to the stop.
2 Put the leakage transducer (5) in position on the pipe (1) between the identification tapes (2) and push it tightly on the pipe (1).
3 Push the knurled screw (6) in and attach the fastener strap (4) around the pipe (1) with the threaded element (3).
4 Put the fastener strap (4) through the upper slot of the strap clamp (7) and then through the lower one.
5 Make sure that the fastener strap (4) has the correct tension. And make sure that the knurled screw (6) is pushed in up to the stop.
6 Tighten the knurled screw (6) to attach the leakage transducer (5) to the pipe (1).
(i) Connect the leakage transducer cable (8) to the transmitter (9).
(j) Refer to the ground instruction manual of the USF to set:
- The serial number of the aircraft
- The input location code on the USF to numeric code: 66558384 (Yellow complete section).
(l) Monitor the flow on the USF display. It must not be more than 7.3 l.min (1.93 USgal.mn).
(m) Make a record of the flow rate.
(n) If the internal leakage is more than 7.3 l.min (1.93 USgal.mn) do the measurements of internal leakage to find the cause (s) of the high internal leakage (Ref. AMM TASK 29-00-00-280-003) (Ref. AMM TASK 29-00-00-280-004).
(o) Remove the leakage transducer (5):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to disconnect the leakage transducer (5) from the pipe (1).
2 Push the knurled screw (6) in and disconnect the fastener strap (4) from the strap clamp (7).
3 Remove the leakage transducer (5) from the pipe (1).
(p) Disconnect the leakage transducer cable (8) from the transmitter (9).
E. Do this functional test for the Green hydraulic system:
(a) In the main gear compartment, disconnect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-001).
(b) On the overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/G P/BSW is set to ON (the OFF light is off).
(c) On the overhead panel 40VU, set the PTU P/BSW to OFF (the OFF light comes on).
(d) Open access door 197CB.
(e) Connect a ground service cart with the FLOWMETER 20.00 L.MN (5.2833 US GAL.MN), calibrated to +/- 1.5% over full range, to pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001).
(f) Monitor the flow shown on the ground supply flow meter.
(g) Make sure that the flow rate is not more than 7.2 l.min (1.90 USgal.mn).
(h) If the internal leakage is too much:
1 Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001).
2 Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
3 Disconnect the ground supply from the aircraft ground test connections.
4 Install the blanking caps on the ground test connections.
5 Pressurize the Green hydraulic system from Yellow hydraulic system through the PTU with the Yellow electric pump (Ref. AMM TASK 29-23-00-863-001).
6 Close access door 197CB.
7 Do the leakage check of all sections of the Green hydraulic system to find the cause of high leakage (Ref. AMM TASK 29-00-00-280-001).
(2) Measurement of the Green hydraulic system (complete section) internal leakage with the USF:
(a) On overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/G P/BSW is set to on (the OFF light is off).
(b) Refer to the lower DU of the ECAM (HYD page) to make sure that the solenoid valve operation is correct (the flow arrow of the Green hydraulic system is green and the system name is white).
(c) On overhead panel 40VU, make sure that the PTU P/BSW is set to AUTO (the OFF and FAULT lights are off).
(d) Refer to the ground instruction manual of the USF to make sure that the 61007010-01 USF FIRMWARE FOR SA is installed.
(e) Clean the tube (1) between the identification tapes (2) with a Textile-Lint free Cotton - (Material No.14SBA1) .
(f) Do not use detergents to clean the leakage transducer (5). Remove traces of acoustic coupling compound from the leakage transducer (5) and clean the leakage transducer (5) with a Textile-Lint free Cotton - (Material No.14SBA1) .
(g) Apply a thin layer of the acoustic coupling compound (part of USF FLUXUS GST 6108, 610007AB TOOL-MEASURE,HYDRAULIC FLOW) to the contact surfaces of the leakage transducer (5).
(h) Install the leakage transducer (5) between the identification tapes (2) on the pipe (1):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to the stop.
2 Put the leakage transducer (5) in position on the pipe (1) between the identification tapes (2) and push it tightly on the pipe (1).
3 Push the knurled screw (6) in and attach the fastener strap (4) around the pipe (1) with the threaded element (3).
4 Put the fastener strap (4) through the upper slot of the strap clamp (7) and then through the lower one.
5 Make sure that the fastener strap (4) has the correct tension. And make sure that the knurled screw (6) is pushed in up to the stop.
6 Tighten the knurled screw (6) to attach the leakage transducer (5) to the pipe (1).
(i) Connect the leakage transducer cable (8) to the transmitter (9).
(j) Refer to the ground instruction manual of the USF to set:
(l) Monitor the flow on the USF display. It must not be more than 7.2 l.min (1.90 USgal.mn).
(m) Make a record of the flow rate.
(n) If the internal leakage is more than 7.2 l.min (1.90 USgal.mn) do the measurements of internal leakage to find the cause (s) of the high internal leakage (Ref. AMM TASK 29-00-00-280-001) (Ref. AMM TASK 29-00-00-280-004).
(o) Remove the leakage transducer (5):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to disconnect the leakage transducer (5) from the pipe (1).
2 Push the knurled screw (6) in and disconnect the fastener strap (4) from the strap clamp (7).
3 Remove the leakage transducer (5) from the pipe (1).
(p) Disconnect the leakage transducer cable (8) from the transmitter (9).
(3) Open, safety and tag this(these) circuit breaker(s):
1GA, 2GA, 52GA, 1701GK, 1702GK.
(4) Remove the blanking plug from electrical connector 49GA-A.
(5) Connect electrical connector 49GA-A to safety valve 49GA.
Subtask 29-10-00-220-052-C ** ON A/C NOT FOR ALL NOTE: You can do this test with or without an Ultrasonic Flowmeter (USF). If the internal leakage is out of limits then the USF must be used to prevent an Aircraft On Ground (AOG) condition.
(1) Measure the internal leakage of the Green hydraulic system (complete) without a USF: (a) In the main gear compartment, disconnect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-001).
(b) On the overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/G P/BSW is set to ON (the OFF light is off).
(c) On the overhead panel 40VU, set the PTU P/BSW to OFF (the OFF light comes on).
(d) Open access door 197CB.
(e) Connect a ground service cart with the FLOWMETER 20.00 L.MN (5.2833 US GAL.MN), calibrated to +/- 1.5% over full range, to pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001).
(f) Monitor the flow shown on the ground supply flow meter.
(g) Make sure that the flow rate is not more than 7.2 l.min (1.90 USgal.mn).
(h) If the internal leakage is too much:
1 Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001).
2 Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
3 Disconnect the ground supply from the aircraft ground test connections.
4 Install the blanking caps on the ground test connections.
5 Pressurize the Green hydraulic system from Yellow hydraulic system through the PTU with the Yellow electric pump (Ref. AMM TASK 29-23-00-863-001).
6 Close access door 197CB.
7 Do the leakage check of all sections of the Green hydraulic system to find the cause of high leakage (Ref. AMM TASK 29-00-00-280-001).
(2) Measurement of the Green hydraulic system (complete section) internal leakage with the USF:
(a) On overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/G P/BSW is set to on (the OFF light is off).
(b) Refer to the lower DU of the ECAM (HYD page) to make sure that the solenoid valve operation is correct (the flow arrow of the Green hydraulic system is green and the system name is white).
(c) On overhead panel 40VU, make sure that the PTU P/BSW is set to AUTO (the OFF and FAULT lights are off).
(d) Refer to the ground instruction manual of the USF to make sure that the 61007010-01 USF FIRMWARE FOR SA is installed.
(e) Clean the tube (1) between the identification tapes (2) with a Textile-Lint free Cotton - (Material No.14SBA1) .
(f) Do not use detergents to clean the leakage transducer (5). Remove traces of acoustic coupling compound from the leakage transducer (5) and clean the leakage transducer (5) with a Textile-Lint free Cotton - (Material No.14SBA1) .
(g) Apply a thin layer of the acoustic coupling compound (part of USF FLUXUS GST 6108, 610007AB TOOL-MEASURE,HYDRAULIC FLOW) to the contact surfaces of the leakage transducer (5).
(h) Install the leakage transducer (5) between the identification tapes (2) on the pipe (1):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to the stop.
2 Put the leakage transducer (5) in position on the pipe (1) between the identification tapes (2) and push it tightly on the pipe (1).
3 Push the knurled screw (6) in and attach the fastener strap (4) around the pipe (1) with the threaded element (3).
4 Put the fastener strap (4) through the upper slot of the strap clamp (7) and then through the lower one.
5 Make sure that the fastener strap (4) has the correct tension. And make sure that the knurled screw (6) is pushed in up to the stop.
6 Tighten the knurled screw (6) to attach the leakage transducer (5) to the pipe (1).
(i) Connect the leakage transducer cable (8) to the transmitter (9).
(j) Refer to the ground instruction manual of the USF to set:
- The serial number of the aircraft
- The input location code on the USF to numeric code: 26780443 (Green complete section).
(l) Monitor the flow on the USF display. It must not be more than 7.2 l.min (1.90 USgal.mn).
(m) Make a record of the flow rate.
(n) If the internal leakage is more than 7.2 l.min (1.90 USgal.mn) do the measurements of internal leakage to find the cause (s) of the high internal leakage (Ref. AMM TASK 29-00-00-280-001) (Ref. AMM TASK 29-00-00-280-004).
(o) Remove the leakage transducer (5):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to disconnect the leakage transducer (5) from the pipe (1).
2 Push the knurled screw (6) in and disconnect the fastener strap (4) from the strap clamp (7).
3 Remove the leakage transducer (5) from the pipe (1).
(p) Disconnect the leakage transducer cable (8) from the transmitter (9).
(3) Open, safety and tag this(these) circuit breaker(s):
1GA, 2GA, 52GA, 1701GK, 1702GK.
(4) Remove the blanking plug from electrical connector 49GA-A.
(5) Connect electrical connector 49GA-A to safety valve 49GA.
F. Do this functional test for the Yellow hydraulic system:
(a) On the overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/Y P/BSW is set to ON (the OFF light is off).
(b) On the overhead panel 40VU, make sure that the PTU P/BSW is set to OFF (the OFF light is on).
(c) Open access door 198CB.
(d) Connect a ground service cart with the FLOWMETER 20.00 L.MN (5.2833 US GAL.MN), calibrated to +/- 1.5% over full range, to pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002).
(e) Monitor the flow shown on the ground supply flow meter.
(f) Make sure that the flow rate is not more than 7.2 l.min (1.90 USgal.mn).
(g) If the internal leakage is too much:
1 Depressurize the Yellow hydraulic system
(Ref. AMM TASK 29-10-00-864-002).
2 Disconnect the ground supply from the aircraft ground test connections.
3 Install the blanking caps on the ground test connections.
4 Pressurize the Yellow hydraulic system with the Yellow electric pump (Ref. AMM TASK 29-24-00-863-001).
5 Close access door 198CB.
6 Do the leakage check of all sections of the Yellow hydraulic system to find the cause of high leakage (Ref. AMM TASK 29-00-00-280-003).
(2) Measure the Yellow hydraulic system (complete section) internal leakage with the USF:
(a) On overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/Y P/BSW is set to on (the OFF light is off).
(b) Refer to the lower DU of the ECAM (HYD page) to make sure that the solenoid valve operation is correct (the flow arrow of the Yellow hydraulic system is green and the system name is white).
(c) On overhead panel 40VU, make sure that the PTU P/BSW is set to OFF (the OFF light is on).
(d) Refer to the ground instruction manual of the USF to make sure that the 61007010-01 USF FIRMWARE FOR SA is installed.
(e) Clean the tube (1) between the identification tapes (2) with a Textile-Lint free Cotton - (Material No.14SBA1) .
(f) Do not use detergents to clean the leakage transducer (5). Remove traces of acoustic coupling compound from the leakage transducer (5) and clean it with a Textile-Lint free Cotton - (Material No.14SBA1) .
(g) Apply a thin layer of the acoustic coupling compound (part of USF FLUXUS GST 6108, 610007AB TOOL-MEASURE,HYDRAULIC FLOW) to the contact surfaces of the leakage transducer (5).
(h) Install the leakage transducer (5) between the identification tapes (2) on the pipe (1):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to the stop.
2 Put the leakage transducer (5) in position on the pipe (1) between the identification tapes (2) and push it tightly on the pipe (1).
3 Push the knurled screw (6) in and attach the fastener strap (4) around the pipe (1) with the threaded element (3).
4 Put the fastener strap (4) through the upper slot of the strap clamp (7) and then through the lower one.
5 Make sure that the fastener strap (4) has the correct tension. And make sure that the knurled screw (6) is pushed in up to the stop.
6 Tighten the knurled screw (6) to attach the leakage transducer (5) to the pipe (1).
(i) Connect the leakage transducer cable (8) to the transmitter (9).
(j) Refer to the ground instruction manual of the USF to set:
(l) Monitor the flow on the USF display. It must not be more than 7.2 l.min (1.90 USgal.mn).
(m) Make a record of the flow rate.
(n) If the internal leakage is more than 7.2 l.min (1.90 USgal.mn) do the measurements of internal leakage to find the cause (s) of the high internal leakage (Ref. AMM TASK 29-00-00-280-003) (Ref. AMM TASK 29-00-00-280-004).
(o) Remove the leakage transducer (5):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to disconnect the leakage transducer (5) from the pipe (1).
2 Push the knurled screw (6) in and disconnect the fastener strap (4) from the strap clamp (7).
3 Remove the leakage transducer (5) from the pipe (1).
(p) Disconnect the leakage transducer cable (8) from the transmitter (9).
Subtask 29-10-00-860-117-A ** ON A/C NOT FOR ALL NOTE: You can do this test with or without an Ultrasonic Flowmeter (USF). If the internal leakage is out of limits then the USF must be used to prevent an Aircraft On Ground (AOG) condition.
(1) Measure the internal leakage of the Yellow hydraulic system (complete) without a USF: (a) On the overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/Y P/BSW is set to ON (the OFF light is off).
(b) On the overhead panel 40VU, make sure that the PTU P/BSW is set to OFF (the OFF light is on).
(c) Open access door 198CB.
(d) Connect a ground service cart with the FLOWMETER 20.00 L.MN (5.2833 US GAL.MN), calibrated to +/- 1.5% over full range, to pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002).
(e) Monitor the flow shown on the ground supply flow meter.
(f) Make sure that the flow rate is not more than 7.2 l.min (1.90 USgal.mn).
(g) If the internal leakage is too much:
1 Depressurize the Yellow hydraulic system
(Ref. AMM TASK 29-10-00-864-002).
2 Disconnect the ground supply from the aircraft ground test connections.
3 Install the blanking caps on the ground test connections.
4 Pressurize the Yellow hydraulic system with the Yellow electric pump (Ref. AMM TASK 29-24-00-863-001).
5 Close access door 198CB.
6 Do the leakage check of all sections of the Yellow hydraulic system to find the cause of high leakage (Ref. AMM TASK 29-00-00-280-003).
(2) Measure the Yellow hydraulic system (complete section) internal leakage with the USF:
(a) On overhead maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/Y P/BSW is set to on (the OFF light is off).
(b) Refer to the lower DU of the ECAM (HYD page) to make sure that the solenoid valve operation is correct (the flow arrow of the Yellow hydraulic system is green and the system name is white).
(c) On overhead panel 40VU, make sure that the PTU P/BSW is set to OFF (the OFF light is on).
(d) Refer to the ground instruction manual of the USF to make sure that the 61007010-01 USF FIRMWARE FOR SA is installed.
(e) Clean the tube (1) between the identification tapes (2) with a Textile-Lint free Cotton - (Material No.14SBA1) .
(f) Do not use detergents to clean the leakage transducer (5). Remove traces of acoustic coupling compound from the leakage transducer (5) and clean it with a Textile-Lint free Cotton - (Material No.14SBA1) .
(g) Apply a thin layer of the acoustic coupling compound (part of USF FLUXUS GST 6108, 610007AB TOOL-MEASURE,HYDRAULIC FLOW) to the contact surfaces of the leakage transducer (5).
(h) Install the leakage transducer (5) between the identification tapes (2) on the pipe (1):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to the stop.
2 Put the leakage transducer (5) in position on the pipe (1) between the identification tapes (2) and push it tightly on the pipe (1).
3 Push the knurled screw (6) in and attach the fastener strap (4) around the pipe (1) with the threaded element (3).
4 Put the fastener strap (4) through the upper slot of the strap clamp (7) and then through the lower one.
5 Make sure that the fastener strap (4) has the correct tension. And make sure that the knurled screw (6) is pushed in up to the stop.
6 Tighten the knurled screw (6) to attach the leakage transducer (5) to the pipe (1).
(i) Connect the leakage transducer cable (8) to the transmitter (9).
(j) Refer to the ground instruction manual of the USF to set:
- The serial number of the aircraft
- The input location code on the USF to numeric code: 66558384 (Yellow complete section).
(l) Monitor the flow on the USF display. It must not be more than 7.2 l.min (1.90 USgal.mn).
(m) Make a record of the flow rate.
(n) If the internal leakage is more than 7.2 l.min (1.90 USgal.mn) do the measurements of internal leakage to find the cause (s) of the high internal leakage (Ref. AMM TASK 29-00-00-280-003) (Ref. AMM TASK 29-00-00-280-004).
(o) Remove the leakage transducer (5):
1 Hold the leakage transducer (5) and turn the knurled screw (6) counterclockwise to disconnect the leakage transducer (5) from the pipe (1).
2 Push the knurled screw (6) in and disconnect the fastener strap (4) from the strap clamp (7).
3 Remove the leakage transducer (5) from the pipe (1).
(p) Disconnect the leakage transducer cable (8) from the transmitter (9).
G. The subtask that follows shows the circuit breaker table for the Green hydraulic system.
Subtask 29-10-00-865-101-A H. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 29-10-00-710-057-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | L/G/LGCIU/SYS1/NORM | 1GA | C09 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | HYDRAULIC/G HYD/PUMP ENG1/CTL | 1701GK | H12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/CTL | 1701GK | R35 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R34 |
| ** ON A/C ALL | |||
| 121VU | HYDRAULIC/LGCIU/SYS2 | 2GA | Q35 |
| 121VU | HYDRAULIC/LGCIU/SYS1/GRND SPLY | 52GA | Q34 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |
I. Test for the Green Hydraulic System
(1) Do an operational check to make sure that the safety valve closes at 260 kts (Ref. AMM TASK 32-31-00-710-005).
5. Close-up(1) Do an operational check to make sure that the safety valve closes at 260 kts (Ref. AMM TASK 32-31-00-710-005).
Subtask 29-10-00-860-067-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to the serviceable condition.
(1) Remove the ground service cart and the flow meter from the aircraft.
(2) Connect the isolation coupling of the Power Transfer Unit (PTU) (Ref. AMM TASK 29-23-00-860-002).
Subtask 29-10-00-860-111-A ** ON A/C NOT FOR ALL (1) Remove the ground service cart and the flow meter from the aircraft.
(2) Connect the isolation coupling of the Power Transfer Unit (PTU) (Ref. AMM TASK 29-23-00-860-002).
B. Put the aircraft back to the serviceable condition for the Green hydraulic system:
(1) On overhead panel 50VU, lift the guard and set the HYD/LEAK MEASUREMENT VALVES/G P/BSW to on. Make sure that the OFF light goes off.
(2) Refer to the lower DU of the ECAM (HYD page) and make sure that the solenoid valve operates correctly (the flow arrow of the Green hydraulic system is green and the system name is white).
(3) Depressurize the Green and Yellow hydraulic systems after operation of the PTU (Ref. AMM TASK 29-23-00-864-001).
(4) Make sure that the work area is clean and clear of tools and other items.
(5) Close the right door of the main gear (Ref. AMM TASK 32-12-00-410-001).
(6) On overhead panel 40VU, set the PTU P/BSW to AUTO (the OFF and FAULT lights are off).
(7) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(8) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
Subtask 29-10-00-860-112-A ** ON A/C NOT FOR ALL (1) On overhead panel 50VU, lift the guard and set the HYD/LEAK MEASUREMENT VALVES/G P/BSW to on. Make sure that the OFF light goes off.
(2) Refer to the lower DU of the ECAM (HYD page) and make sure that the solenoid valve operates correctly (the flow arrow of the Green hydraulic system is green and the system name is white).
(3) Depressurize the Green and Yellow hydraulic systems after operation of the PTU (Ref. AMM TASK 29-23-00-864-001).
(4) Make sure that the work area is clean and clear of tools and other items.
(5) Close the right door of the main gear (Ref. AMM TASK 32-12-00-410-001).
(6) On overhead panel 40VU, set the PTU P/BSW to AUTO (the OFF and FAULT lights are off).
(7) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(8) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
C. Put the aircraft back to the serviceable condition for the Yellow hydraulic system:
(1) On overhead maintenance panel 50VU, lift the guard and set the HYD/LEAK MEASUREMENT VALVES/Y P/BSW to on. Make sure that the OFF light goes off.
(2) Refer to the lower DU of the ECAM (HYD page) and make sure that the solenoid valve operates correctly (the flow arrow of the Yellow hydraulic system is green and the system name is white).
(3) On overhead panel 40VU, set the PTU P/BSW to AUTO (the OFF and FAULT lights are off).
(4) Depressurize the Yellow hydraulic system
(Ref. AMM TASK 29-24-00-864-001).
(5) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
(6) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(7) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
Subtask 29-10-00-410-085-A ** ON A/C NOT FOR ALL (1) On overhead maintenance panel 50VU, lift the guard and set the HYD/LEAK MEASUREMENT VALVES/Y P/BSW to on. Make sure that the OFF light goes off.
(2) Refer to the lower DU of the ECAM (HYD page) and make sure that the solenoid valve operates correctly (the flow arrow of the Yellow hydraulic system is green and the system name is white).
(3) On overhead panel 40VU, set the PTU P/BSW to AUTO (the OFF and FAULT lights are off).
(4) Depressurize the Yellow hydraulic system
(Ref. AMM TASK 29-24-00-864-001).
(5) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
(6) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(7) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
D. Close Access to the Green Hydraulic System
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the right door of the main gear (Ref. AMM TASK 32-12-00-410-001).
Subtask 29-10-00-410-086-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the right door of the main gear (Ref. AMM TASK 32-12-00-410-001).
E. Close Access to the Yellow Hydraulic System
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close access door 196BB.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close access door 196BB.