(2)
Open one of the main doors of the main landing gear (Ref. TASK 32-12-00-010-001).
NOTE : You can open any one of the two doors, but access is better
____
from the right side.
(3)
Disconnect the PTU isolation coupling (Ref. TASK 29-23-00-860-001). NOTE : If necessary, you can now pressurize the Yellow hydraulic
____
system.
(4)
Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. TASK 31-60-00-860-001).
(5)
On the ECAM control panel on the center pedestal, push the HYD pushbutton switch (P/BSW) . Make sure that the lower (system) display shows the HYD page.
4. Procedure
_________
**ON A/C 001-049, 051-058, 101-101,
Subtask 29-10-00-864-051
A. Depressurization
(1) Refer to the ECAM indication of the GREEN system pressure and make sure that it shows 0.
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS ARE
_______ CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE.
(2) If the ECAM indication of the GREEN system pressure does not show 0, operate the rudder to reduce the pressure to zero.
R **ON A/C 059-099, 102-149, 151-199, 201-299, 301-399, 401-499,
Subtask 29-10-00-864-051-A
A. Depressurization NOTE : When the hydraulic pressure supply stops, the pressure decreases
____ quickly to approximately 700 psi / 50 bar. From this value the pressure decreases very slowly to zero (approximately 15 minutes).
R R (1) Refer to the ECAM indication of the GREEN system pressure and make sure that it shows 0.
R R R WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS ARE_______ CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE.
R R (2) If the ECAM indication of the GREEN system pressure does not show 0, operate the rudder to reduce the pressure to zero.
R **ON A/C ALL
5. Close-up________
Subtask 29-10-00-860-051
A. Put the aircraft back to the serviceable condition.
(1) Do the EIS stop procedure (Ref. TASK 31-60-00-860-002).
(2) Connect the PTU isolation coupling (Ref. TASK 29-23-00-860-002).
(3) Close the main door of the main landing gear (Ref. TASK 32-12-00-410-001).
TASK 29-10-00-864-002
Depressurize the Yellow Hydraulic System
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______ CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
1. Reason for the Job
__________________
To make sure that the Yellow hydraulic system is depressurized before work is done on the system.
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-23-00-860-001 Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU) 29-23-00-860-002 Connection of the Isolation Coupling of the Power
Transfer Unit (PTU) 31-60-00-860-001 EIS Start Procedure 31-60-00-860-002 EIS Stop Procedure 32-12-00-010-001 Open the Main Gear Doors for Access 32-12-00-410-001 Close the Main Gear Doors after Access
1EFF : ALL 1 29-10-00Page 204 1 1 May 01/01R 1 1 1CES 1
3. Job Set-up
__________ Subtask 29-10-00-860-052
A. Aircraft Maintenance Configuration
(1)
Stop any supply of hydraulic power to the Yellow and Green hydraulic systems through the ground connections.
(2)
If the Yellow electric pump is in operation:
-in the flight compartment (on section 40VU of the overhead panel) push and release the YELLOW ELEC PUMP pushbutton switch.
(3)
Make sure that the ON legend goes off.
(4)
Open one of the main doors of the main landing gear (Ref. TASK 32-12-00-010-001).
