(4)
Put a warning notice on the GRAVITY GEAR EXTN handle (panel 110VU) to tell persons not to operate the landing gear.
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R R R R (5) On the panel 400VU: - make sure that the landing-gear control-lever 6GA is in the DOWN position - put a warning notice in position to tell persons not to operate the landing gear.
(6) Put a warning notice in position to tell persons not to pressurize the Yellow and Green hydraulic systems.
Subtask 32-30-00-860-055
B. Aircraft Maintenance Configuration
(1) Make sure that the Yellow and Green hydraulic systems are de-pressurized (Ref. TASK 29-00-00-864-001) and (Ref. TASK 29-10-00-864-002).
(2) Disconnect the isolation coupling of the PTU (Ref. TASK 29-23-00-860-001).
Subtask 32-30-00-582-052
C. Lift the Aircraft
(1) Lift the aircraft on jacks (Ref. TASK 07-11-00-581-001).
Subtask 32-30-00-869-057
D. Flight Configuration Precautions
(1) If the electrical power is not necessary for other maintenance tasks, de-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002). Then, it is not necessary to operate the LGCIU circuit breakers.
(2) If the electrical power is necessary, do the precautions for flight configuration (Ref. TASK 32-00-00-860-001) before you open the LGCIU circuit breakers.
Subtask 32-30-00-010-053
E. Get Access
(1) Open the NLG doors (Ref. TASK 32-22-00-010-001).
R (2) Make sure that a SAFETY PIN - NLG DOOR (98D32203502000) is installed in each NLG door (Ref. TASK 32-00-00-481-002).
(3) Open the MLG doors (Ref. TASK 32-12-00-010-001).
(4) Make sure that the GROUND LOCK SLEEVE (460005835) is on each MLG door actuating cylinder (Ref. TASK 32-00-00-481-002).
Subtask 32-30-00-860-058
F. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
(2) Connect the ground hydraulic cart to the Green and the Yellow hydraulic systems (Ref. TASK 29-10-00-863-001). Do not pressurize the systems.
4. Procedure_________
Subtask 32-30-00-867-053
R A. Retraction of the Landing Gear for Maintenance
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE LANDING GEAR ARE CLEAR._______
R R R CAUTION : REMOVE THE SAFETY STAY BEFORE YOU DO THE LANDING GEAR EXTENSION_______ AND RETRACTION TESTS. DAMAGE TO THE FUSELAGE CAN OCCUR IF THE AIRCRAFT MOVES DURING THE TESTS.
R (1) Remove the safety stay at FR73/74.
R (2) Remove the safety lock(s) from the landing gear(s) that is(are) to be retracted: - for the NLG, remove the PIN-NLG DOWNLOCK SAFETY (D23080000) - for the MLG, remove the GROUND LOCK SLEEVE (460005833) or the GROUNDLOCK SLEEVE (460007280).
R (3) On the panel 400VU, move the landing-gear control-lever 6GA to the UP position. On the panel 402VU: - the green lights stay on - the red lights come on.
NOTE : In the paragraphs that follow, only the lights that change are____ given.
R (4) Use the handpump on the hydraulic cart to retract the applicable
landing gear(s):
-
the related green light(s) go(es) off
-
the red lights stay on.
R (5) When the applicable landing gear(s) is(are) retracted:
-the related red light(s) go(es) off.
NOTE : If more than one landing gear is to be retracted, you can use
____ the electric pump on the hydraulic cart.
5. Close-up
________
Subtask 32-30-00-860-053
A. Aircraft Configuration
(1)
Depressurize the Green hydraulic system
(Ref. TASK 29-10-00-864-001).
(2)
De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
Subtask 32-30-00-865-050
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------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
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Extension of the Landing Gear after Maintenance
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
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