D. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU L/G/LGCIU/SYS1/NORM 1GA C09 121VU HYDRAULIC/LGCIU/SYS2 2GA Q35 121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34
 Subtask 32-31-46-860-056
 E. Aircraft Maintenance Configuration
 (1)
 Connect a GROUND POWER UNIT - HYDRAULIC to the aircraft (Ref. TASK 29-10-00-863-001). Do not pressurize the Green hydraulic system until told to do so in Paragraph 4.A.

 (2)
 Energize the electrical circuits from the external power (Ref. TASK 24-41-00-861-002).

 (3)
 Open the MLG doors (Ref. TASK 32-12-00-010-001).

 (4)
 Install a GROUND LOCK SLEEVE (460005835) on each MLG door (Ref. TASK 32-00-00-481-002).

 (5)
 Open the NLG doors (Ref. TASK 32-22-00-010-001).

 (6)
 Install a SAFETY PIN - NLG DOOR (98D32203502000) in each NLG door (Ref. TASK 32-00-00-481-002).

 (7)
 Install the PIN-NLG DOWNLOCK SAFETY (D23080000) in the NLG lock stay (Ref. TASK 32-00-00-481-001).

 (8)
 Remove the ground safety lock from the applicable MLG.

 (9)
 Remove the safety stay from FR73/74.

 (10) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only) (Ref. TASK 31-60-00-860-001).
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 4. Procedure
_________ Subtask 32-31-46-870-051
 A. Bleeding MLG Actuating Cylinder WARNING : MAKE SURE THAT THE CONTROLS AGREE WITH THE POSITION OF THE
_______ ITEMS THEY OPERATE BEFORE YOU PRESSURIZE A HYDRAULIC SYSTEM.
 WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE LANDING GEAR ARE CLEAR.
_______
 WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES

_______ ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
 NOTE : It is necessary to have two persons for this procedure. One person
____ must be in the cockpit to operate the lever 6GA. One person must be at the MLG to operate the GROUND POWER UNIT - HYDRAULIC and to monitor the movement of the MLG. The two persons must be able to speak to each other.
 NOTE : During this procedure, make sure that the necessary minimum flow
____ capacity from the GROUND POWER UNIT - HYDRAULIC is 140 l.min (36.9837 USgal.mn).
 NOTE : The GROUND POWER UNIT - HYDRAULIC must be started in the No-Load
____ Position and No-Flow must come from the hydraulic rig.
 (1)
 Start the GROUND POWER UNIT - HYDRAULIC without pressurizing the Green hydraulic system.

 (2)
 On the panel 400VU:

 -move the landing-gear control-lever 6GA to the UP position. NOTE : Be careful when you open the flow control valve on the GROUND
____ POWER UNIT - HYDRAULIC. The rate of retraction of the landing gear is controlled by the position of the flow control valve.
 (3)
 At the GROUND POWER UNIT - HYDRAULIC:

 -slowly open the flow control valve to make the landing gear retract to between 20 and 30 degrees from the vertical.

 (4)
 At the GROUND POWER UNIT - HYDRAULIC:

 -when the applicable MLG is set to between 20 and 30 degrees from the vertical, close the flow control valve (on the GROUND POWER UNIT - HYDRAULIC). This will stop the movement of the MLG.
 1EFF : ALL 1 32-31-46Page 304 1 1 May 01/04 1 1 1CES 1

 (5) On the panel 400VU:
 -move the landing-gear control-lever 6GA to the DOWN position. NOTE : Be careful when you open the flow control valve on the GROUND
____ POWER UNIT - HYDRAULIC. The rate of extension of the landing gear is controlled by the position of the flow control valve.
 (6)
 At the GROUND POWER UNIT - HYDRAULIC:

 -slowly open the flow control valve to extend the MLG.

 (7)
 In the cockpit:

 -make sure the applicable MLG is in the indicated locked down position.

 (8)
 At the GROUND POWER UNIT - HYDRAULIC:

 -fully close the flow control valve.

 (9)
 Do the steps (3) thru (8) again. Do a minimum of ten cycles of the MLG to fully bleed the system.

 5. Close-up
________ Subtask 32-31-46-860-055
 A. Aircraft Maintenance Configuration
 (1)
 Do the EIS stop procedure (Ref. TASK 31-60-00-860-002)

 (2)
 Depressurize the Green hydraulic system (Ref. TASK 29-10-00-864-001).

 (3)
 Install the ground safety lock on the applicable MLG.
　
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