(3)
Fill the Blue reservoir until the fluid is at the upper limit on the visual indicator.
(4)
Close the valve V1.
(5)
Close the depressurization valve of the Blue reservoir.
(6)
Pressurize the Blue hydraulic reservoir (Ref. TASK 29-14-00-614-002).
(7)
Disconnect the outboard air supply.
4. Procedure
_________ Subtask 12-36-29-611-070
A. Replacement of the Hydraulic Fluid NOTE : Obey the fluid level of the Blue reservoir during the procedure.
____ Adjust the fluid level with the valve V1 when it decreases.
(1) Replacement of the Fluid in the Suction, Pressure and Case Drain Lines of the Blue Electric Pump (2075GJ).
(a)
Start the hydraulic ground power supply.
(b)
On the TOOL - HYDRAULIC FLUID CHANGE (DH0501):
-make sure that the valve V1 is open.
(c)
On the overhead panel 40VU:
-push the BLUE ELEC PUMP pushbutton switch.
(d)
On the maintenance panel 50VU:
-push and release the BLUE PUMP OVRD pushbutton switch:
-
the ON legend comes on,
-
the electric pump starts.
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(e)
On the TOOL - HYDRAULIC FLUID CHANGE (DH0501):
- open the valve V2 until you collect 4 liters of fluid.
(f)
Close the valve V2.
(g)
On the maintenance panel 50VU:
-push and release the BLUE PUMP OVRD pushbutton switch:
-
the ON legend goes off,
-
the electric pump stops.
(h)
Stop the hydraulic ground power supply.
(2) Replacement of the Fluid in the Supply and Return Lines of the Primary Servocontrols.
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.
(a)
Start the hydraulic ground power supply. NOTE : Increase the rate of flow and the pressure as necessary.
____
(b)
On the overhead maintenance panel 50VU, push the LEAK MEASUREMENT VALVES/B pushbutton switch (the OFF legend is off).
(c)
On the TOOL - HYDRAULIC FLUID CHANGE (DH0501) open the valve V1 and keep it open during the full procedure.
(d)
Pressurize the Blue hydraulic system with the E-pump (Ref. TASK 29-10-00-863-003). Make sure that the system pressure shown on the ECAM SD and the pressure gauge of the system accumulator is correct.
(e)
In the cockpit, operate the flight controls.
(f)
On the panel 11VU, move the GND SPLRS ARMED lever to the FULL position and then to the RET position. Do this step 3 times.
NOTE : The spoilers 3 LH and RH operate.
____
(g) On the panel 18VU or 19VU, move the side stick fully to the left and then fully to the right. Do this step 3 times.
NOTE : The ailerons and spoilers 3 LH and RH operate.
____
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(h) On the panel 18VU or 19VU, move the side stick fully forward and then fully rearward. Do this step 3 times.
NOTE : The elevators operate.
____
(i) At the captain or first officer position, push the LH pedal fully forward and then the RH pedal fully forward. Do this step 3 times.
NOTE : The rudder operates.
____
(j) On the panel 114VU, move the flap/slat lever to the FULL position and then to the 0 deg position. Do this step 2 times.
NOTE : The slats operate.
____
(k)
Stop the hydraulic ground power supply.
(l)
Depressurize the Blue hydraulic system (Ref. TASK 29-10-00-864-003).
5. Close-up
________ Subtask 12-36-29-610-071
A. Replace the filter elements of these hydraulic filters:
-LP filter (2002GM) (Ref. TASK 29-12-44-610-001).
-Case drain filter (2084GM) (Ref. TASK 29-12-43-610-001). Subtask 12-36-29-860-129
B. Aircraft Maintenance Configuration
(1)
On the overhead maintenance panel 50VU, make sure that the LEAK MEASUREMENT VALVES/B pushbutton switch is set to off (the OFF legend is on).
(2)
On the Blue HP manifold (2011GM), remove the plug type E0052R8B3APNE from the pressure switches (2151GN) and (10CE1) and connect the pressure switches (2151GN) and (10CE1).
(3)
Close the valves V1 and V2 on the TOOL - HYDRAULIC FLUID CHANGE (DH0501).
(4) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM SERVICING 2(145)
