Subtask 29-10-00-865-065
C. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
49VU HYD/HYD PWR/B WARN/& CTL R 106VU ESS TR/SPLY R
121VU HYDRAULIC/HYD POWER/Y 123VU B HYD/ELEC PUMP 123VU Y HYD/ELEC/PUMP 123VU Y HYD/ELEC/ELEC PUMP/NORM
Subtask 29-10-00-010-063
D. Open these access panels: 197CB, 197EB, 198CB
4. Procedure
_________
Subtask 29-10-00-720-050
A. Do this test:
2702GJ C12 4PE C01
3803GX N302701GJ AB093802GX AB063801GX AB03
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES
_______ ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the hydraulic ground supply:
-pressurize the Green hydraulic system to 125 bar (1800 psi).
2. On the overhead panel 40VU:
-push the PTU P/BSW.
On the overhead panel 40VU:
-
the PTU P/BSW OFF light goes off.
In the main landing gear compartment:
-
the PTU does not operate, because the priority valve closes at 130 +0 -3 bar (1885 +0 -43.5 psi).
On the lower ECAM DU:
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
R R
3. On the hydraulic ground supply:
-slowly increase the supply pressure to the Green hydraulic system to 160 bar (2325 psi).
4. On the hydraulic ground supply:
-slowly decrease the supply pressure to the Green hydraulic system to 125 bar (1800 psi).
R
R
R 5. On the hydraulic ground supply:
R - depressurize the Green
R hydraulic system (Ref. TASK 29-
R 10-00-864-001).
R 6. On the hydraulic ground supply:
R - disconnect the hydraulic ground
R supply from the ground service
R panel of the Green hydraulic
R system,
R - connect the hydraulic ground
R supply to the connections on
-
the pressure in the Green hydraulic system is 125 bar (1800 psi),
-
the pressure in the Yellow hydraulic system is 3.5 bar (51 psi) (Reservoir Pressure).
In the main landing gear compartment:
-
the PTU starts to operate, becausethe priority valve opens at 140 +0 -5bar (2030 +0 -72.5 psi).
On the lower ECAM DU:
-
the pressure in the Green hydraulic system is approximately 160 bar (2325 psi).
-
the pressure in the Yellow hydraulic system is no more than 14 bar (200 psi) less than the pressure in the Green 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)).
On the lower ECAM DU:
-
the pressure in the Green hydraulic system is 125 bar (1800 psi)
-
the pressure in the Yellow hydraulic system is 3.5 bar (51 psi) (Reservoir Pressure).
In the main landing gear compartment:
-
the PTU does not operate, because the priority valve closes at 130 +0 -3 bar (1885 +0 -43.5 psi).
-------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
the ground service panel of the Yellow hydraulic system (Ref. TASK 29-10-00-863-002).
7. On the hydraulic ground supply:
-pressurize the Yellow hydraulic system to 125 bar (1800 psi).
8. On the hydraulic ground supply:
-slowly increase the supply pressure to the Yellow hydraulic system to 160 bar (2325 psi).
9. On the hydraulic ground supply:
-slowly decrease the supply pressure to the Yellow hydraulic system to 125 bar (1800 psi).
10. On the hydraulic ground supply:
-depressurize the Yellow hydraulic system (Ref. TASK 29-10-00-864-002),
-disconnect the hydraulic ground supply from the ground service panel of the Yellow hydraulic system,
-connect the hydraulic ground supply to the connections on the ground service panel of the Blue hydraulic system (Ref. TASK 29-10-00-863-003).
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本文链接地址：A320飞机维护手册 AMM HYDRAULIC POWER 液压1(116)
