-
the pressure in the Green hydraulic system is 3.5 bar (51 psi) (Reservoir Pressure).

In the main landing gear compartment:

-
the PTU starts to operate because thepriority valve is open at 140 +0 -5bar (2030 +0 -72.5 psi).

 On the lower ECAM DU:

 -
the pressure in the Yellow hydraulic system is approximately 160 bar (2325 psi),

 -
the pressure in the Green hydraulic system is no more than 14 bar (200 psi) less than the pressure in the Yellow hydraulic system.

In the main landing gear compartment:

-
the PTU stops when the priority valvecloses (between 144 bar and 127 bar(2088 psi and 1842 psi)).

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 -------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
11. On the hydraulic ground supply:
 -pressurize the Blue hydraulic system to 135 bar (1960 psi).
 NOTE : You must start at 135 bar
____ (1960 psi), because this is the min. pressure for the CSM/G to operate.
 12. On the overhead panel 21VU:
-lift the guard, and press and hold the EMER GEN TEST pushbutton.
13. On the overhead panel 21VU:
 -release the EMER GEN TEST pushbutton, and let the guard go back to its initial position.
 14. On the hydraulic ground supply:
 -slowly increase the supply pressure to the Blue hydraulic system to 160 bar (2325 psi).
 15. On the overhead panel 21VU:
-lift the guard, and press and hold the EMER GEN TEST pushbutton.
16. On the hydraulic ground supply:
-slowly decrease the supply pressure to the Blue hydraulic system to 125 bar (1800 psi).
On the hydraulic ground supply:
 -depressurize the Blue hydraulic system (Ref. TASK 29-10-00-864-003).
On the lower ECAM DU:
-
the ELEC page replaces the HYD page.

In the main landing gear compartment:

 -
the Constant Speed Motor/Generator (CSM/G) does not operate, because the priority valve is closed at 130 +0 -3 bar (1885 +0 -43.5 psi).

In the main landing gear compartment:
-
the CSM/G starts to operate becausethe priority valve is open at 140 +0-5 bar (2030 +0 -72.5 psi).

In the main landing gear compartment:

-
the CSM/G stops when the priorityvalve closes (between 144 bar and 127bar (2088 psi and 1842 psi).

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 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
17. On the overhead panel 21VU:
 -release the EMER GEN TEST
 pushbutton, and let the guard
 go back to its initial
 position.

 5. Close-up
________
 Subtask 29-10-00-860-077
 A. Put the aircraft back to the serviceable condition.
 (1)
 Disconnect the hydraulic ground supply from the ground service panel of the Blue hydraulic system (Ref. TASK 29-10-00-864-003).

 (2)
 De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).

 Subtask 29-10-00-410-063
 B. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Close the access panels 197CB, 197EB, 198CB.

 Subtask 29-10-00-865-064
 C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 4PE, 3801GX, 3802GX, 3803GX, 2701GJ, 2702GJ.
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 MAIN HYDRAULIC POWER - INSPECTION/CHECK
_______________________________________ TASK 29-10-00-200-001 R Check Fluid Level on Reservoir Indicators WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
 GEAR.

 1.
 Reason for the Job

__________________
 Refer to the MPD TASK: 291000-01

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
 No specific warning notices

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
　
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