DOC AIRBUS | AMM A320FDisconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 29-23-00-860-001-A
Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 29-23-00-860-050-A
Subtask 29-23-00-020-050-A
Subtask 29-23-00-860-056-A
[Rev.10 from 2021]
2026.04.01 00:26:38 UTC
Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
FIN: 3701GM
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 2 | PLUG - BLANKING, PLASTIC |
| 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 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 |
Isolation CouplingSubtask 29-23-00-860-050-A
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(3) Make sure that both hydraulic systems Yellow and Green are depressurized (Refer to the ECAM indication of the Green and Yellow system pressures and make sure that they show 0 psi).
(4) On the panel 40VU, make sure that the YELLOW ELEC PUMP P/B SW is set to off.
(5) Open the main doors of the main gear (Ref. AMM TASK 32-12-00-010-001).
4. Procedure(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(3) Make sure that both hydraulic systems Yellow and Green are depressurized (Refer to the ECAM indication of the Green and Yellow system pressures and make sure that they show 0 psi).
(4) On the panel 40VU, make sure that the YELLOW ELEC PUMP P/B SW is set to off.
(5) Open the main doors of the main gear (Ref. AMM TASK 32-12-00-010-001).
Subtask 29-23-00-020-050-A
A. Disconnection of the isolation coupling of the PTU.
(1) Retract the coupling sleeve and turn the coupling mechanism until the coupling is disengaged.
(2) Install the PLUG - BLANKING, PLASTIC.
5. Close-up(1) Retract the coupling sleeve and turn the coupling mechanism until the coupling is disengaged.
(2) Install the PLUG - BLANKING, PLASTIC.
NOTE: You can use the plastic shipping plugs.
Subtask 29-23-00-860-056-A
A. Put the aircraft back to the serviceable condition.
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).