DOC AIRBUS | AMM A320FInstallation of the Torque Tube Assembly-MLG
TASK 32-33-17-400-001-A
Installation of the Torque Tube Assembly-MLG
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Expendable Parts
D. Referenced Information
3. Job Set-up
Subtask 32-33-17-941-051-A
Subtask 32-33-17-420-050-A
Subtask 32-33-17-410-050-A
[Rev.10 from 2021]
2026.04.01 00:46:45 UTC
Installation of the Torque Tube Assembly-MLG
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
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.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | SAFETY BARRIER(S) |
| No specific | 1 | WARNING NOTICE(S) |
| 98DNSA20208060 | 1 | RIGGING PIN |
| 98DNSA20208150 | 1 | RIGGING PIN |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.06LCG9) | Non Hardening Jointing Putty-Medium Temp. Area - - |
| (Material No.12ACB1) | Corrosion Preventive Compound-Heavy Duty Hard Film - |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 11 | COTTER PINS | AIPC 32-33-03-01-170 |
| 11 | COTTER PINS | AIPC 32-33-83-01-020 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
| TASK 24-42-00-862-001-A | De-energize the Ground Service Network Supplied from the External Power |
| TASK 25-21-41-400-001-A | Installation of the Passenger Seats |
| TASK 25-28-41-400-001-A | Installation of the Textile Floor Covering |
| TASK 32-00-00-481-001-A | Installation of the Safety Devices on the Landing Gears |
| TASK 32-12-00-010-001-A | Open the Main Gear Doors for Access |
| TASK 32-12-00-410-001-A | Close the Main Gear Doors after Access |
| TASK 32-33-00-200-001-A | Functional Check of Free-fall Mechanism Cable Tension |
| TASK 32-33-00-720-001-A | Functional Check of Free-Fall Extension |
| TASK 32-33-00-820-003-A | Adjustment of the MLG Free-Fall Extension Cable System |
| TASK 32-33-16-000-001-A | Removal of the NLG Free-Fall Extension Cables |
| TASK 53-32-12-400-002-A | Installation of the Cabin Floor Panels |
Torque Tube AssemblySubtask 32-33-17-941-051-A
A. Safety Precautions
(1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the ground safety locks are on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On the panel 400VU:
Subtask 32-33-17-860-050-A (1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the ground safety locks are on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On the panel 400VU:
- Make sure that the landing-gear control-lever 6GA is in the DOWN position.
- Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the landing gear.
B. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized from the external power (Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the MLG doors are opened (Ref. AMM TASK 32-12-00-010-001).
(3) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable main gear door actuator.
Subtask 32-33-17-865-050-A (1) Make sure that the ground service network is energized from the external power (Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the MLG doors are opened (Ref. AMM TASK 32-12-00-010-001).
(3) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable main gear door actuator.
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | L/G/LGCIU/SYS1/NORM | 1GA | C09 |
| 121VU | HYDRAULIC/LGCIU/SYS2 | 2GA | Q35 |
| 121VU | HYDRAULIC/LGCIU/SYS1/GRND SPLY | 52GA | Q34 |
Subtask 32-33-17-420-050-A
A. Installation of the Torque Tube Assembly
(1) Do an inspection of the component interfaces and the adjacent area.
(2) Make sure that the surfaces of the flange (13) and the brackets (14) and (18) are in the correct condition.
(3) Put the torque tube assembly (21) in position.
(4) At view E:
(a) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) :
(c) Apply Corrosion Preventive Compound-Heavy Duty Hard Film - (Material No.12ACB1) on the bolts (20) and the nuts (19).
(5) At view F:
(a) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) :
(c) Apply Corrosion Preventive Compound-Heavy Duty Hard Film - (Material No.12ACB1) on the bolts (12) and the nuts (15).
(6) At views C and D:
(a) Put the control rods (5) and (16) in postion.
(b) Install the bushes (8), the bolts (7), the washers (9) and the castellated nuts (10).
(c) Safety the castellated nuts (10) with the new AIPC 32-33-03-01-170 COTTER PINS (11) or AIPC 32-33-83-01-020 COTTER PINS (11).
Subtask 32-33-17-480-051-A (1) Do an inspection of the component interfaces and the adjacent area.
(2) Make sure that the surfaces of the flange (13) and the brackets (14) and (18) are in the correct condition.
(3) Put the torque tube assembly (21) in position.
(4) At view E:
(a) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) :
- To the shanks and threads of the bolts (20)
- Below the heads of the bolts (20)
- To the threads of the nuts (19).
(c) Apply Corrosion Preventive Compound-Heavy Duty Hard Film - (Material No.12ACB1) on the bolts (20) and the nuts (19).
(5) At view F:
(a) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) :
- To the shanks and threads of the bolts (12)
- Below the heads of the bolts (12)
- To the threads of the nuts (15).
(c) Apply Corrosion Preventive Compound-Heavy Duty Hard Film - (Material No.12ACB1) on the bolts (12) and the nuts (15).
(6) At views C and D:
(a) Put the control rods (5) and (16) in postion.
(b) Install the bushes (8), the bolts (7), the washers (9) and the castellated nuts (10).
(c) Safety the castellated nuts (10) with the new AIPC 32-33-03-01-170 COTTER PINS (11) or AIPC 32-33-83-01-020 COTTER PINS (11).
B. Installation of the Rigging Pins (Ref. AMM TASK 32-33-16-000-001)
(1) For the pulley at frame 47:
Subtask 32-33-17-820-050-A (1) For the pulley at frame 47:
- Put a 98DNSA20208150 RIGGING PIN in the position Pin 2.
- Put a 98DNSA20208060 RIGGING PIN in the applicable position Pin 3.
C. Install the MLG Free-Fall Extension Cables
(1) Put the free-fall extension cables (1) and (2) in position at the torque tube assembly (21).
(2) Connect each cable to its related cable with the turnbuckles (4).
(3) Temporarily attach the locking pins (3).
(4) Adjust the free-fall extension cables that were loosened (Ref. AMM TASK 32-33-00-820-003).
(5) Do a cable tension check on the free-fall extension cables that were loosened (Ref. AMM TASK 32-33-00-200-001).
Subtask 32-33-17-865-051-A (1) Put the free-fall extension cables (1) and (2) in position at the torque tube assembly (21).
(2) Connect each cable to its related cable with the turnbuckles (4).
(3) Temporarily attach the locking pins (3).
(4) Adjust the free-fall extension cables that were loosened (Ref. AMM TASK 32-33-00-820-003).
(5) Do a cable tension check on the free-fall extension cables that were loosened (Ref. AMM TASK 32-33-00-200-001).
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 32-33-17-720-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | L/G/LGCIU/SYS1/NORM | 1GA | C09 |
| 121VU | HYDRAULIC/LGCIU/SYS2 | 2GA | Q35 |
| 121VU | HYDRAULIC/LGCIU/SYS1/GRND SPLY | 52GA | Q34 |
E. Test
(1) Make sure that all the rigging pins are removed.
(2) Remove the ground safety locks and close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
(3) Do a functional check of the free-fall extension system. (Ref. AMM TASK 32-33-00-720-001)
5. Close-up(1) Make sure that all the rigging pins are removed.
(2) Remove the ground safety locks and close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
(3) Do a functional check of the free-fall extension system. (Ref. AMM TASK 32-33-00-720-001)
Subtask 32-33-17-410-050-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the cabin floor panels 241LF, 242LF and 242FF (Ref. AMM TASK 53-32-12-400-002).
(3) Install the cabin floor covering that was removed (Ref. AMM TASK 25-28-41-400-001).
(4) Install the passenger seats that were removed (Ref. AMM TASK 25-21-41-400-001).
(5) Remove the access platform(s).
(6) Remove the WARNING NOTICE(S).
Subtask 32-33-17-862-050-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the cabin floor panels 241LF, 242LF and 242FF (Ref. AMM TASK 53-32-12-400-002).
(3) Install the cabin floor covering that was removed (Ref. AMM TASK 25-28-41-400-001).
(4) Install the passenger seats that were removed (Ref. AMM TASK 25-21-41-400-001).
(5) Remove the access platform(s).
(6) Remove the WARNING NOTICE(S).