DOC AIRBUS | AMM A320FInstallation of the Lock Fitting Components
TASK 52-31-32-400-001-A
Installation of the Lock Fitting Components
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 52-31-32-860-051-A
Subtask 52-31-32-420-050-A
Subtask 52-31-32-865-052-A
[Rev.10 from 2021]
2026.04.01 01:41:49 UTC
Installation of the Lock Fitting Components
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03JCA9) | Silicone base Grease-Mechanisms and Seals - - |
| (Material No.06AAB1) | Polysulfide Sealant-General Purpose Fillet - |
| (Material No.12ABE2) | Corrosion Preventive Compound-Water Displacing Oily Film System |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 825AR |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 1 | NEW COTTER PIN | AIPC 52-31-32-01-040 |
| 1 | COTTER PIN | AIPC 52-31-82-80-050 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 52-30-00-860-001-A | Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
| TASK 52-30-00-860-002-A | Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
| TASK 52-31-11-820-001-A | Adjustment of the FWD Cargo-Compartment Door |
Lock Fitting ComponentsSubtask 52-31-32-860-051-A
A. Aircraft Maintenance Configuration
(1) Make sure that the FWD cargo-compartment door (referred to as cargo door) is opened and safetied with the actuator safety locks (Ref. AMM TASK 52-30-00-860-001).
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position below the opened cargo door.
(3) Make sure that the access panel 825AR is removed from the cargo door.
Subtask 52-31-32-865-051-A (1) Make sure that the FWD cargo-compartment door (referred to as cargo door) is opened and safetied with the actuator safety locks (Ref. AMM TASK 52-30-00-860-001).
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position below the opened cargo door.
(3) Make sure that the access panel 825AR is removed from the cargo door.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 52-31-32-910-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 122VU | DOORS/CARGO | 1MJ | T12 |
C. Preparation for Installation
(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Clean the component interfaces and the adjacent area.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Apply Silicone base Grease-Mechanisms and Seals - - (Material No.03JCA9) to the roller (7), the adjusting bush (5), the eccentric bush (6), the eccentric bolt (9) and the special bolts (12).
(5) Apply Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the contact area of the serrated plates (4),(8).
4. Procedure(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Clean the component interfaces and the adjacent area.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Apply Silicone base Grease-Mechanisms and Seals - - (Material No.03JCA9) to the roller (7), the adjusting bush (5), the eccentric bush (6), the eccentric bolt (9) and the special bolts (12).
(5) Apply Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the contact area of the serrated plates (4),(8).
Subtask 52-31-32-420-050-A
A. Installation of the Lock Fitting Components
(1) Put the eccentric bush (6) into the roller (7).
(3) Engage the serrated plate (4) with the adjusting bush (5).
(4) Put the roller (7) with the eccentric bush (6) into the door frame fitting (13).
(6) Install the serrated plates (8) to the eccentric bolt (9).
(7) Align the slot of the serrated plates (4),(8) with the special bolts (12) of the door frame fitting (13).
(8) Attach the serrated plates (4),(8) with the special bolts (12), the washers (11) and the nuts (10). Do not tighten the nuts at this stage.
(9) Install the washer (3) and the nut (2) on the eccentric bolt (9), but do not tighten at this stage.
Subtask 52-31-32-820-050-A (1) Put the eccentric bush (6) into the roller (7).
NOTE: Make sure that the color marks or the center punches are aligned after the assembly.
(2) Install the adjusting bush (5) into the door frame fitting (13). (3) Engage the serrated plate (4) with the adjusting bush (5).
(4) Put the roller (7) with the eccentric bush (6) into the door frame fitting (13).
NOTE: Make sure that the slot of the eccentric bush (6) engages with the pin of the adjusting bush (5) correctly.
(5) Install the eccentric bolt (9) with the serrated plate (8) into the door frame fitting (13). (6) Install the serrated plates (8) to the eccentric bolt (9).
(7) Align the slot of the serrated plates (4),(8) with the special bolts (12) of the door frame fitting (13).
(8) Attach the serrated plates (4),(8) with the special bolts (12), the washers (11) and the nuts (10). Do not tighten the nuts at this stage.
(9) Install the washer (3) and the nut (2) on the eccentric bolt (9), but do not tighten at this stage.
B. Adjustment Procedure
(1) Remove the actuator safety locks and close the FWD cargo door (Ref. AMM TASK 52-30-00-860-002).
(2) Adjust the eccentric bushes (6) and the eccentric bolts (9) to make sure that the skin offset is correct (Ref. AMM TASK 52-31-11-820-001).
Subtask 52-31-32-420-051-A (1) Remove the actuator safety locks and close the FWD cargo door (Ref. AMM TASK 52-30-00-860-002).
(2) Adjust the eccentric bushes (6) and the eccentric bolts (9) to make sure that the skin offset is correct (Ref. AMM TASK 52-31-11-820-001).
C. Final Installation of the Lock fitting Components
(1) Open the FWD and/or AFT cargo-compartment door(s) (Ref. AMM TASK 52-30-00-860-001).
(2) TORQUE the nuts (10) to between 0.4 and 0.3 m.daN (35.40 and 26.55 lbf.in )
.
(3) TORQUE the nut (2) to between 3.0 and 2.0 m.daN (22.12 and 14.75 lbf.ft ) and loosen it to the next cotter pin hole.
(4) Safety the nut (2) with the AIPC 52-31-32-01-040 NEW COTTER PIN (1) or AIPC 52-31-82-80-050 COTTER PIN (1).
(5) Apply a bead of Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) around the serrated plates (4) or (8).
(6) Apply Corrosion Preventive Compound-Water Displacing Oily Film System (Material No.12ABE2) to the metal surfaces of the new installed components which have no other surface protection.
5. Close-up(1) Open the FWD and/or AFT cargo-compartment door(s) (Ref. AMM TASK 52-30-00-860-001).
(2) TORQUE the nuts (10) to between 0.4 and 0.3 m.daN (35.40 and 26.55 lbf.in )
. (3) TORQUE the nut (2) to between 3.0 and 2.0 m.daN (22.12 and 14.75 lbf.ft )
and loosen it to the next cotter pin hole. (4) Safety the nut (2) with the AIPC 52-31-32-01-040 NEW COTTER PIN (1) or AIPC 52-31-82-80-050 COTTER PIN (1).
(5) Apply a bead of Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) around the serrated plates (4) or (8).
(6) Apply Corrosion Preventive Compound-Water Displacing Oily Film System (Material No.12ABE2) to the metal surfaces of the new installed components which have no other surface protection.
Subtask 52-31-32-865-052-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 52-31-32-410-052-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 122VU | DOORS/CARGO | 1MJ | T12 |
B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the FWD cargo door (Ref. AMM TASK 52-30-00-860-002).
(3) Install the access panel 825AR on the closed cargo door.
(4) Remove the access platform(s).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the FWD cargo door (Ref. AMM TASK 52-30-00-860-002).
(3) Install the access panel 825AR on the closed cargo door.
(4) Remove the access platform(s).