G. Pressurize the Hydraulic System WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES
_______ ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
(1) Pressurize the Green hydraulic system
(Ref. TASK 29-10-00-863-001).
Subtask 32-33-00-860-066
H. Aircraft Maintenance Configuration
(1)
Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. TASK 31-60-00-860-001).
(2)
On the ECAM CP, push (in) the WHEEL pushbutton switch (PBS/W) and make sure that the WHEEL page shows on the ECAM lower DU.
(3)
Make sure that the ECAM lower DU shows:
-
the L/G extended and locked
-
the L/G doors closed and locked.
(4)
Make sure that the three green triangles on the L/G annunciator panel 402VU are on.
(5)
Remove the Safety Equipment 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.
(a) Remove the safety stay at FR73/74.
(6) Retract the landing gear WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE LANDING GEAR ARE
_______
CLEAR.
(a) On the panel 400VU, move the landing-gear control-lever 6GA to the UP position.
1EFF : ALL 1 32-33-00Page 505 1 1 Feb 01/98 1 1 1CES 1 Subtask 32-33-00-210-052
J. Visually Inspect the L/G During the Extension and Retraction
(1) Make sure that:
-
the L/G doors open
-
the L/G retracts
-
the L/G doors close and lock
-
the ECAM lower DU shows the L/G is up and locked and the L/G doors are closed and locked
-
the three green triangles on the L/G annunciator panel 402VU go off.
NOTE : During the extension and the retraction of the L/G:
____
-
the red UNLK legend comes on when the L/G is not in the same position as the selector lever
-
the ECAM lower DU shows the change in the L/G position and the amber L/G CTL indication.
4. Procedure
_________
(Ref. Fig. 501/TASK 32-33-00-991-001)
Subtask 32-33-00-720-050
R A. Functional Check of the Free-Fall Extension
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE LANDING GEAR ARE CLEAR.
_______
CAUTION : DO NOT TURN THE GRAVITY GEAR EXTENSION HANDLE MORE THAN 3 FULL
_______ TURNS. THIS CAN CAUSE DAMAGE TO THE FREE FALL EXTENSION SYSTEM.
(1) L/G Free-Fall Extension Check:
(a)
On the panel 110VU, move the GRAVITY GEAR EXTN handle from the folded position.
(b)
Connect a spring balance 5.0 daN (12 lbf) to the end of the GRAVITY GEAR EXTN handle.
NOTE : When you use the spring balance, it must:
____
-be pulled at 90 DEG to the radius of the GRAVITY GEAR EXTN handle at a rate of one full turn each 5 seconds
-show a force of between 0.5 daN (1.12 lbf) and 2 daN
(4.5 lbf).
1EFF : ALL 1 32-33-00Page 506 1 1 Feb 01/05 1 1 1CES 1 NOTE : During the procedure, record the time taken for each L/G
____ to extend and downlock. This is the time taken between release from the uplock to when the lock stay goes fully over-center. All three L/G's operate at the same time.
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the panel 110VU: On the aircraft:
-turn the GRAVITY GEAR EXTN - at the end of the second turn the L/G
handle clockwise two full turns doors have released and started to open.
-if the NLG doors do not fully
open, help them to fully open
with your hand.
NOTE : There are no aerodynamic
____
effects on the doors
during this test. This is
why the doors do not
always fully open.
-
make sure that all the L/G - at the end of the third turn the L/G doors are fully open, then turn has unlocked and started to extend. the GRAVITY GEAR EXTN handle clockwise one full turn (to release each leg from its uplock)
-
make sure that the GRAVITY GEAR
EXTN handle will not turn more
than 3 turns. Do not use a
force of more than 2 daN
(4.4961 lbf) when you turn the
GRAVITY GEAR EXTN handle.
On the aircraft: On the aircraft: R - record the time taken for each - the time taken must be 11.5 +/- 5 R of the L/G to extend. seconds for the NLG and 23 +/- 7 R seconds for the MLG. 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320飛機維護手冊 AMM LANDING GEAR 起落架5(97)
