DOC AIRBUS | AMM A320FInstallation of the Steady Bearing
TASK 27-84-44-400-004-A
Installation of the Steady Bearing
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 27-84-44-941-065-A
Subtask 27-84-44-420-063-A
Subtask 27-84-44-942-053-A
[Rev.10 from 2021]
2026.04.01 07:08:14 UTC
Installation of the Steady Bearing
WARNING:
MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.
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:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
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 | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.06AEA1) | Polysulfide Sealant-Low Adhesion Brushable - |
| (Material No.06AEB2) | Polysulfide Sealant-Low Adhesion Fillet Structure |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.12ACC1) | Corrosion Preventive Compound-Heavy Duty Soft Film - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 27-50-00-400-003-A | Installation of the Lock-Torque Shaft - Flaps and Slats (98D27504030001) |
| TASK 27-84-00-710-001-A | Operational Test of the Slat System |
| TASK 27-84-45-400-010-A | Installation of the Torque Shaft |
Subtask 27-84-44-941-065-A
A. Safety Precautions
(1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the WARNING NOTICE(S) is in the cockpit to tell persons not to operate the slat controls.
(3) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS is on the flap/slat control lever.
Subtask 27-84-44-860-053-A (1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the WARNING NOTICE(S) is in the cockpit to tell persons not to operate the slat controls.
(3) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS is on the flap/slat control lever.
B. Aircraft Maintenance Configuration
(1) Make sure that the access platform is in position below the applicable zone 521 (621).
(2) Make sure that the applicable access panel 521AT (621AT) is removed.
(3) Make sure that a 98D27504030001 LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT is installed (Ref. AMM TASK 27-50-00-400-003) as follows:
Subtask 27-84-44-865-053-A (1) Make sure that the access platform is in position below the applicable zone 521 (621).
(2) Make sure that the applicable access panel 521AT (621AT) is removed.
(3) Make sure that a 98D27504030001 LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT is installed (Ref. AMM TASK 27-50-00-400-003) as follows:
- on the torque shaft, inboard of the applicable component
- on the torque shaft, outboard of the applicable component.
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
Subtask 27-84-44-420-063-A
A. Preparation for Installation
(1) Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the component interface and/or the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Apply a layer of Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) or Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) to the:
Subtask 27-84-44-420-064-A (1) Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the component interface and/or the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Apply a layer of Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) or Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) to the:
- mating faces of the steady bearing (30) and the steady bearing bracket (28)
- shanks of the bolts (27).
B. Installation of the Steady Bearing FIN 6023CM (6073CM)
(1) Attach the steady bearing (30) to the torque shaft (29) and the steady bearing bracket (28) with the bolts (27).
(2) Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the bolts (27) and the flange of the steady bearing (30).
Subtask 27-84-44-410-053-A (1) Attach the steady bearing (30) to the torque shaft (29) and the steady bearing bracket (28) with the bolts (27).
(2) Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the bolts (27) and the flange of the steady bearing (30).
C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable torque shaft (31) (Ref. AMM TASK 27-84-45-400-010):
(a) FOR [6023CM] (SLAT STEADY BEARING)
install the torque shaft FIN 6022CM
(b) FOR [6073CM] (SLAT STEADY BEARING)
install the torque shaft FIN 6072CM.
(3) Install the applicable access panels 521AT (621AT).
Subtask 27-84-44-865-060-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable torque shaft (31) (Ref. AMM TASK 27-84-45-400-010):
(a) FOR [6023CM] (SLAT STEADY BEARING)
install the torque shaft FIN 6022CM
(b) FOR [6073CM] (SLAT STEADY BEARING)
install the torque shaft FIN 6072CM.
(3) Install the applicable access panels 521AT (621AT).
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 27-84-44-710-053-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
E. Test
(1) Do an operational test of the slat power-transmission system (Ref. AMM TASK 27-84-00-710-001).
5. Close-up(1) Do an operational test of the slat power-transmission system (Ref. AMM TASK 27-84-00-710-001).
Subtask 27-84-44-942-053-A
A. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.