DOC AIRBUS | AMM A320FInstallation of the Dampers of the New-Generation Side Stick Unit (SSU)
TASK 27-92-41-400-805-A
Installation of the Dampers of the New-Generation Side Stick Unit (SSU)
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 27-92-41-860-070-A
Subtask 27-92-41-420-067-A
Subtask 27-92-41-410-082-A
[Rev.10 from 2021]
2026.03.31 23:59:07 UTC
Installation of the Dampers of the New-Generation Side Stick Unit (SSU)
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION:
MAKE SURE THAT THE SIDE-STICK UNIT STAYS IN VERTICAL POSITION DURING THE MAINTENANCE PROCEDURE.
THIS IS TO PREVENT DAMPER FLUID LEAKAGE WHICH CAN CAUSE DAMAGE TO THE UNIT.
NOTE: This task is applicable only for the new-generation Side Stick Units (SSUs). For the other SSU assemblies, refer to the procedure (Ref. AMM TASK 27-92-41-400-003). To know if the SSU installed on the aircraft is a new-generation SSU, refer to the procedure (Ref. AMM TASK 27-92-41-860-801).
1. Reason for the JobSelf Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | Torque wrench: range to between 0.06 and 0.05 m.daN (5.31 and 4.42 lbf.in )  | |
| 62902FE39201000 | 1 | SMALL POSITION-ADJUSTMENT PIN |
| 98D27903500000 | 1 | PIN-SIDE STICK LOCKING |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03GEE1) | Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 211 | COCKPIT |
| 212 | COCKPIT |
| 822 |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 1 | SCREWS | AIPC 27-92-41-03-070 |
| 2 | WASHERS | AIPC 27-92-41-03-080 |
| 3 | WASHER | AIPC 27-92-41-03-160 |
| 8 | WASHER | AIPC 27-92-41-03-160 |
| 2 | COTTER PIN | AIPC 27-92-41-03-170 |
| 7 | COTTER PIN | AIPC 27-92-41-03-170 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
| TASK 27-92-41-400-802-A | Installation of the New-Generation Side Stick Unit (SSU) |
Damper KitSubtask 27-92-41-860-070-A
A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized (Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the access door 822.
(3) Make sure that the access door 822 is open.
(4) On the battery power center 105VU:
4. Procedure(1) Make sure that the ground service network is energized (Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the access door 822.
(3) Make sure that the access door 822 is open.
(4) On the battery power center 105VU:
- Make sure that the protective cover is removed.
Subtask 27-92-41-420-067-A
A. Installation of the Pitch Damper
(a) Remove the strap (3).
(b) Pull the seal (1).
(2) Install the pitch damper as follows
(a) Clean the component interfaces and the adjacent area.
(b) Do an inspection of the component interfaces and the adjacent area.
(c) Install the pitch damper (10) on the SSU. Make sure that the rod end points up.
(e) Apply Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated - (Material No.03GEE1) on the mating surfaces of the damper shaft (9).
(f) Install the damper shaft (9), a new AIPC 27-92-41-03-160 WASHER (8) and a new AIPC 27-92-41-03-170 COTTER PIN (7) on the bed assembly side (top of the damper).
(g) Bend the cotter pin (7) as a marine anchor.
(h) Hold the control handle and remove the 98D27903500000 PIN-SIDE STICK LOCKING (6).
(i) Apply Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated - (Material No.03GEE1) on the mating surfaces of the damper shaft (9).
(j) Install the damper shaft (9), a new AIPC 27-92-41-03-160 WASHER (8) and a new AIPC 27-92-41-03-170 COTTER PIN (7) on the bottom of the plate assembly (the bottom of the damper).
(k) Bend the cotter pin (7) as a marine anchor.
Subtask 27-92-41-420-068-A CAUTION:
FOR THE DAMPER KIT, BE CAREFUL NOT TO CAUSE DAMAGE TO THE THERMOSHRINKABLE SLEEVE INSTALLED ON THE DAMPER ROD END WHEN YOU REMOVE THE SEAL ASSEMBLY.
(1) Disassemble the damper kit (a) Remove the strap (3).
(b) Pull the seal (1).
CAUTION:
AFTER YOU REMOVED THE TRANSPORT STRAP AND THE SEAL ASSEMBLY, HOLD THE DAMPER IN THE VERTICAL POSITION UNTIL YOU INSTALL IT ON THE SIDE STICK UNIT. IF YOU DO NOT HOLD IT IN THE VERTICAL POSITION, HYDRAULIC FLUID CAN FLOW FROM THE DAMPER.
1 Pull the seal (1) to remove it from the damper (2). (2) Install the pitch damper as follows
(a) Clean the component interfaces and the adjacent area.
(b) Do an inspection of the component interfaces and the adjacent area.
(c) Install the pitch damper (10) on the SSU. Make sure that the rod end points up.
NOTE: You can manually move the control handle for easy access to the top fitting.
(d) Put the control handle in the nose-down position and install the 98D27903500000 PIN-SIDE STICK LOCKING (6). (e) Apply Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated - (Material No.03GEE1) on the mating surfaces of the damper shaft (9).
(f) Install the damper shaft (9), a new AIPC 27-92-41-03-160 WASHER (8) and a new AIPC 27-92-41-03-170 COTTER PIN (7) on the bed assembly side (top of the damper).
(g) Bend the cotter pin (7) as a marine anchor.
(h) Hold the control handle and remove the 98D27903500000 PIN-SIDE STICK LOCKING (6).
(i) Apply Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated - (Material No.03GEE1) on the mating surfaces of the damper shaft (9).
(j) Install the damper shaft (9), a new AIPC 27-92-41-03-160 WASHER (8) and a new AIPC 27-92-41-03-170 COTTER PIN (7) on the bottom of the plate assembly (the bottom of the damper).
(k) Bend the cotter pin (7) as a marine anchor.
B. Installation of the Roll Damper
(a) Remove the strap (3).
(b) Pull the seal (1).
(2) Install the roll damper as follows
(a) Clean the component interfaces and the adjacent area.
(b) Do an inspection of the component interfaces and the adjacent area.
(c) Install the roll damper (5) on the SSU. Make sure that the rod end points up.
(d) Put the control handle in the inboard position and install the 62902FE39201000 SMALL POSITION-ADJUSTMENT PIN (1).
(e) Apply Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated - (Material No.03GEE1) on the mating surfaces of the damper shaft (4).
(f) Install the damper shaft (4), a new AIPC 27-92-41-03-160 WASHER (3) and a new AIPC 27-92-41-03-170 COTTER PIN (2) on the bed assembly side (the top of the damper).
(g) Bend the cotter pin (2) as a marine anchor.
(h) Hold the control handle and remove the 62902FE39201000 SMALL POSITION-ADJUSTMENT PIN (1).
(i) Apply Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated - (Material No.03GEE1) on the mating surfaces of the damper shaft (4).
(j) Install the damper shaft (4), a new AIPC 27-92-41-03-160 WASHER (3) and a new AIPC 27-92-41-03-170 COTTER PIN (2) on the bottom of the plate assembly (the bottom of the damper).
(k) Bend the cotter pin (2) as a marine anchor.
Subtask 27-92-41-700-050-A CAUTION:
FOR THE DAMPER KIT, BE CAREFUL NOT TO CAUSE DAMAGE TO THE THERMOSHRINKABLE SLEEVE INSTALLED ON THE DAMPER ROD END WHEN YOU REMOVE THE SEAL ASSEMBLY.
(1) Disassemble the damper kit (a) Remove the strap (3).
(b) Pull the seal (1).
CAUTION:
AFTER YOU REMOVED THE TRANSPORT STRAP AND THE SEAL ASSEMBLY, HOLD THE DAMPER IN THE VERTICAL POSITION UNTIL YOU INSTALL IT ON THE SIDE STICK UNIT. IF YOU DO NOT HOLD IT IN THE VERTICAL POSITION, HYDRAULIC FLUID CAN FLOW FROM THE DAMPER.
1 Pull the seal (1) to remove it from the damper (2). (2) Install the roll damper as follows
(a) Clean the component interfaces and the adjacent area.
(b) Do an inspection of the component interfaces and the adjacent area.
(c) Install the roll damper (5) on the SSU. Make sure that the rod end points up.
(d) Put the control handle in the inboard position and install the 62902FE39201000 SMALL POSITION-ADJUSTMENT PIN (1).
(e) Apply Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated - (Material No.03GEE1) on the mating surfaces of the damper shaft (4).
(f) Install the damper shaft (4), a new AIPC 27-92-41-03-160 WASHER (3) and a new AIPC 27-92-41-03-170 COTTER PIN (2) on the bed assembly side (the top of the damper).
(g) Bend the cotter pin (2) as a marine anchor.
(h) Hold the control handle and remove the 62902FE39201000 SMALL POSITION-ADJUSTMENT PIN (1).
(i) Apply Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated - (Material No.03GEE1) on the mating surfaces of the damper shaft (4).
(j) Install the damper shaft (4), a new AIPC 27-92-41-03-160 WASHER (3) and a new AIPC 27-92-41-03-170 COTTER PIN (2) on the bottom of the plate assembly (the bottom of the damper).
(k) Bend the cotter pin (2) as a marine anchor.
C. Test of Damping
(1) Push/pull the control-handle in each axis to the mechanical stops (Pitch, Roll and combined Pitch/Roll axis) to make sure that there is no interference at full stroke.
(2) Pull the control-handle to the nose-up stop (pitch), then release the handle: make sure that there is no oscillation and jerk when the control-handle comes back to the neutral position.
(3) Pull the control-handle to the outboard stop (roll), then release the handle: make sure that there is no oscillation and jerk when the control-handle comes back to the neutral position.
Subtask 27-92-41-410-083-A (1) Push/pull the control-handle in each axis to the mechanical stops (Pitch, Roll and combined Pitch/Roll axis) to make sure that there is no interference at full stroke.
(2) Pull the control-handle to the nose-up stop (pitch), then release the handle: make sure that there is no oscillation and jerk when the control-handle comes back to the neutral position.
(3) Pull the control-handle to the outboard stop (roll), then release the handle: make sure that there is no oscillation and jerk when the control-handle comes back to the neutral position.
D. Installation of the Covers
(1) Clean the component interfaces and the adjacent area.
(a) Make sure that there are no unwanted parts in the side stick unit.
(b) Make sure that no harness was damaged during the replacement of the dampers.
(2) Make sure that the four damper shafts are correctly safetied with four split pins.
(3) Put the covers (3) and (6) in position.
(4) Install the cover (4) with new AIPC 27-92-41-03-070 SCREWS (1) and new AIPC 27-92-41-03-080 WASHERS (2).
(5) Torque the screws (1) to between 0.06 and 0.05 m.daN (5.31 and 4.42 lbf.in ).
(6) Install the cover (5) with new AIPC 27-92-41-03-070 SCREWS (1) and new AIPC 27-92-41-03-080 WASHERS (2).
(7) Torque the screws (1) to between 0.06 and 0.05 m.daN (5.31 and 4.42 lbf.in ).
(8) Make sure that the heads of the screws (1) are in contact and that the washers (2) cannot turn.
5. Close-up(1) Clean the component interfaces and the adjacent area.
(a) Make sure that there are no unwanted parts in the side stick unit.
(b) Make sure that no harness was damaged during the replacement of the dampers.
(2) Make sure that the four damper shafts are correctly safetied with four split pins.
(3) Put the covers (3) and (6) in position.
(4) Install the cover (4) with new AIPC 27-92-41-03-070 SCREWS (1) and new AIPC 27-92-41-03-080 WASHERS (2).
(5) Torque the screws (1) to between 0.06 and 0.05 m.daN (5.31 and 4.42 lbf.in )
. (6) Install the cover (5) with new AIPC 27-92-41-03-070 SCREWS (1) and new AIPC 27-92-41-03-080 WASHERS (2).
(7) Torque the screws (1) to between 0.06 and 0.05 m.daN (5.31 and 4.42 lbf.in )
. (8) Make sure that the heads of the screws (1) are in contact and that the washers (2) cannot turn.
Subtask 27-92-41-410-082-A