-
the PTU stops
-
the pressure in the Green hydraulic system is between 2900 and 3100 psi
On the panel 40VU:
-
the PTU P/BSW OFF light comes onOn the panel 40VU:
-
the YELLOW/ENG 2 PUMP OFF light comeson
On the panel 40VU:
-the PTU P/BSW OFF light goes off
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ACTION RESULT -------------------------------------------------------------------------------
10. Push the left rudder pedal (on one of the two rudder pedal pairs) and then the right rudder pedal not less than five times fully forward to operate the rudder The PTU starts to transfer hydraulic power from the Green to the Yellow hydraulic system
The ECAM lower DU shows:
-the pressure in the Yellow hydraulic system is between 2200 and 3150 psi
NOTE : When the PTU starts, the
____ pressure in the Green hydraulic system could decrease to 2000 psi for a short time.
-
the PTU stops when the pressure in the Yellow hydraulic system is between 2800 and 3150 psi
-
the PTU starts again when the pressure in the Yellow hydraulic system is between 2200 and 2850 psi
NOTE : The PTU operates intermittently
____ between the given limits.
NOTE : The PTU delivery pressure in the
____ Yellow hydraulic system fluctuates in low flow conditions. The difference in pressure between the stop and the start of the PTU is 200 psi minimum.
NOTE : If the PTU runs continuously, do
____ a leakage check of the Yellow hydraulic system (Ref. TASK 29-00-00-280-003).
On the ECAM lower DU:
-the pressure in the Yellow hydraulicsystem is between 2200 and 3150 psi
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11. Put the rudder pedals to the neutral position 12. On the panel 40VU: - press the YELLOW/ENG 2 PUMP P/BSW
R R R R R 13. Make sure, that the parking brake is set to "OFF" and the towing lever is not in the towing position. 14. Stop the left engine to depressurize the Green hydraulic system (Ref. TASK 71-00-00-710-028)
R 15. On the panel 40VU: - push the PTU P/BSW
R 16. Stop the right engine to depressurize the Yellow hydraulic system (Ref. TASK 71-00-00-710-028)
On the panel 40VU:
-
the YELLOW/ENG 2 PUMP ON light comeson
-
the PTU stops
On the ECAM lower DU:
-
the pressure in the Yellow hydraulic system is between 2900 and 3100 psi
-
the PTU starts and pressurizes theGreen hydraulic system
On the ECAM lower DU:
-
the pressure in the Green hydraulic system is between 2200 and 3150 psi
On the panel 40VU:
-
the OFF light of the PTU P/BSW comes on
On the ECAM lower DU:
-
the display shows the PTU set to OFF.
-
the pressure in the Green hydraulic system is 0 psi
On the ECAM lower DU:
-
the pressure in the Yellow hydraulicsystem is 0 psi
5. Close-up
________ Subtask 29-23-00-860-063
A. Put the aircraft back to the serviceable condition.
(1)
Put the PTU P/BSW on the panel 40VU in the AUTO position (OFF light not on).
(2)
Do the EIS stop procedure
(Ref. TASK 31-60-00-860-002).
(3)
De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
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POWER TRANSFER UNIT - (PTU) GREEN/ YELLOW (1088GM) - REMOVAL/INSTALLATION
_________________________________________________________________________
TASK 29-23-41-000-001
Removal of the Green/Yellow Power Transfer Unit 1088GM
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
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
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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