DOC AIRBUS | AMM A320FShimming Procedure for Lavatory Installation
TASK 25-40-00-820-002-A
Shimming Procedure for Lavatory Installation
If the lavatories are installed on the aircraft floor structure which is not level, it is possible the lavatories will not align with the adjacent cabin lining clearance-system. This data gives the procedure of shim plate installation below the lavatory floor.
2. Job Set-up Information
A. Consumable Materials
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 25-40-00-861-053-A
Subtask 25-40-00-820-052-A
Subtask 25-40-00-862-054-A
[Rev.10 from 2021]
2026.03.31 23:34:46 UTC
Shimming Procedure for Lavatory Installation
ZONE: 200
1. Reason for the JobIf the lavatories are installed on the aircraft floor structure which is not level, it is possible the lavatories will not align with the adjacent cabin lining clearance-system. This data gives the procedure of shim plate installation below the lavatory floor.
2. Job Set-up Information
A. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.05NCA2) | Adhesive Transfer Tape-Non Textile Floor - - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 200 | UPPER HALF FUSELAGE |
| 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 |
Shim - Lavatory Installation (Hardpoint Attachment)Subtask 25-40-00-861-053-A
A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
4. Procedure(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
Subtask 25-40-00-820-052-A
A. Installation of Lavatory Shim Plates
(2) Measure the distance between the aircraft floor structure and the lavatory floor. If the distance is more than 2.50 mm (0.10 in.), install the shim plates (2) as follows:
(3) Measure the lavatory floor to make sure it is level in the lavatory door area, if the lavatory floor is not level, install the shim plates as follows:
(a) Position the straight edge on the lavatory floor.
(b) Measure and note the distance between the straight edge and the lavatory floor.
(c) Remove the applicable lavatory assembly.
(d) Install the applicable shim plates (3) to make the lavatory floor level (Refer to Section B-B).
(5) Do Step (3) again.
(6) Remove the applicable lavatory assembly.
(7) Note the shims installed at each location and remove the shims plates (2) and (3).
(8) Install the Adhesive Transfer Tape-Non Textile Floor - - (Material No.05NCA2) (4) to the aircraft floor structure.
(9) Install the applicable shim plates (2) with Adhesive Transfer Tape-Non Textile Floor - - (Material No.05NCA2) between each shim plate.
5. Close-upNOTE: The shim plate installation procedure for the lavatory hardpoint attachments and the lavatory seat rail attachments are almost the same.
(1) Put the applicable lavatory assembly in position. (2) Measure the distance between the aircraft floor structure and the lavatory floor. If the distance is more than 2.50 mm (0.10 in.), install the shim plates (2) as follows:
NOTE: The maximum step from each shim plate must not be more than 0.5 mm (0.02 in.).
(a) Install the shim plates (2). (3) Measure the lavatory floor to make sure it is level in the lavatory door area, if the lavatory floor is not level, install the shim plates as follows:
(a) Position the straight edge on the lavatory floor.
(b) Measure and note the distance between the straight edge and the lavatory floor.
(c) Remove the applicable lavatory assembly.
(d) Install the applicable shim plates (3) to make the lavatory floor level (Refer to Section B-B).
NOTE: The maximum step from each shim plate must not be more than 0.5 mm (0.02 in.).
(4) Put the lavatory assembly in position. (5) Do Step (3) again.
(6) Remove the applicable lavatory assembly.
(7) Note the shims installed at each location and remove the shims plates (2) and (3).
(8) Install the Adhesive Transfer Tape-Non Textile Floor - - (Material No.05NCA2) (4) to the aircraft floor structure.
(9) Install the applicable shim plates (2) with Adhesive Transfer Tape-Non Textile Floor - - (Material No.05NCA2) between each shim plate.
NOTE: The maximum step from each shim plate must not be more than 0.5 mm (0.02 in.).
(10) Install the applicable shim plates (3) with Adhesive Transfer Tape-Non Textile Floor - - (Material No.05NCA2) between each shim plate. NOTE: The maximum step from each shim plate must not be more than 0.5 mm (0.02 in.).
(11) Put the applicable lavatory assembly in position and make sure it is vertical to the aircraft floor structure. Subtask 25-40-00-862-054-A