W DOC AIRBUS | AMM A320F

Removal of the NLG-Door Ground-Opening Control-Unit

TASK 32-22-17-000-001-A
Removal of the NLG-Door Ground-Opening Control-Unit

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
WARNING: MAKE SURE THAT THE SAFETY DEVICES AND THE WARNING NOTICES ARE IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
2
ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific
AR
SAFETY BARRIER(S)
No specific
AR
WARNING NOTICE(S)
98A32301000000
1
RIGGING PIN
98A32301013000
1
RIGGING PIN
 B. Referenced Information
REFERENCE
DESIGNATION
TASK 24-42-00-861-001-A
Energize the Ground Service Network from the External Power
TASK 29-00-00-864-001-A
Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 32-00-00-481-001-A
Installation of the Safety Devices on the Landing Gears
TASK 32-00-00-481-002-A
Installation of the Safety Devices on the Landing Gear Doors
TASK 32-22-00-010-001-A
Nose Gear Doors - Ground Doors Opening
TASK 32-31-41-000-001-A
Removal of the NLG main door control rod
TASK 53-12-13-000-001-A
Removal of the avionics compartment floor panels
F NLG-Door Ground-Opening Control-Unit
3. Job Set-up
Subtask 32-22-17-861-050-A
A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
Subtask 32-22-17-941-050-A
B. Safety Precautions
   (1) In the cockpit, on the right-center instrument panel 400VU:
  • Make sure that the landing-gear normal control-lever (6GA) is in the DOWN position.
  • Put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear.
   (2) Make sure that the safety devices are installed:
   (3) Depressurize the Green hydraulic system
(Ref. AMM TASK 29-00-00-864-001).
   (4) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system:
  • In the cockpit, on the HYD section of the panel 40VU
  • On the ground service panel of the Green hydraulic system, access door 197CB.
   (5) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
Subtask 32-22-17-010-050-D
C. Get Access
   (1) Open the Nose Landing Gear (NLG) doors (Ref. AMM TASK 32-22-00-010-001).
   (2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the control unit, in zone 123.
   (3) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the access door 811.
   (4) Open the access door 811.
   (5) In the avionics compartment, at the rear of the nose gear well, remove the floor panel 127BG (Ref. AMM TASK 53-12-13-000-001).
Subtask 32-22-17-865-050-A
D. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUL/G/LGCIU/SYS1/NORM1GAC09
121VUHYDRAULIC/LGCIU/SYS22GAQ35
121VUHYDRAULIC/LGCIU/SYS1/GRND SPLY52GAQ34
Subtask 32-22-17-020-051-A
E. Disconnection of the Control Rod
   (1) Disconnect the lower attachment of the control rod (Ref. AMM TASK 32-31-41-000-001).
   (2) Put the ground door-opening handle in the CLOSED position.
Subtask 32-22-17-480-050-A
F. Installation of the Rigging Pins on the NLG-Door Ground-Opening Control-Unit
F NLG-Door Ground-Opening Control-Unit
WARNING: MAKE SURE THAT THE NLG DOWNLOCK SAFETY PIN AND THE TWO DOOR SAFETY PINS ARE INSTALLED.
   (1) Install the 98A32301013000 RIGGING PIN (1) on the NLG-door ground-opening bypass-valve (2533GM).
   (2) Install the 98A32301000000 RIGGING PIN (2) on the NLG door uplock-assembly (2534GM).
4. Procedure
Subtask 32-22-17-020-050-A
A. Removal of the NLG-Door Ground-Opening Control-Unit
NOTE: Two persons are necessary for this procedure.
   (1) Remove and discard the cotter pin (14). Remove the nut (15) and the washer (16).
   (2) Remove the bolt (19) and the bush (18) and disconnect the rod (5) from the bellcrank (17).
   (3) Remove and discard the cotter pin (22). Remove the nut (23) and the washer (21).
   (4) Remove the bolt (45) and the bush (44) and disconnect the rod (20) from the bellcrank (43).
   (5) Remove and discard the cotter pin (28). Remove the nut (29) and the washer (27).
   (6) Remove the bolt (24) and the bush (25) and disconnect the rod (31) from the bellcrank (26).
   (7) Remove and discard the cotter pin (33). Remove the nut (34) and the washer (32).
   (8) Remove the bolt (41) and the bush (42) and disconnect the rod (31) from the handle (39).
   (9) Removal of the Ground Door-Opening Handle
NOTE: Two persons are necessary to remove the ground door-opening handle (39), one in the nose gear well, one in the avionics compartment.
     (a) Remove and discard the three cotter pins (35). Remove the three nuts (36) and the three washers (37).
     (b) Remove the three bolts (40).
     (c) Remove the ground door-opening handle (39).
   (10) Remove and discard the locking nut (13).
   (11) Remove the bolt (10) and the washer (9).
   (12) Remove and discard the two locking nuts (7).
   (13) Remove the two bolts (12) and the two half clamps (8).
   (14) Remove and discard the cotter pin (50). Remove the nut (49) and the washer (48).
   (15) Removal of the Bearing Assemblies (30)
     (a) On each side of the torque tube assembly (6):
       1 Remove and discard the three locking nuts (51).
       2 Remove the three bolts (52) and the bearing assembly (30).
   (16) Remove the torque tube assembly (6).
[Rev.10 from 2021] 2026.04.01 00:43:29 UTC
"Aviabrain" 2025