DOC AIRBUS | AMM A320FRemoval of the Elevator Servocontrol Actuator Servovalve
TASK 27-34-51-000-008-A
Removal of the Elevator Servocontrol Actuator Servovalve
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 27-34-51-860-068-A
Subtask 27-34-51-020-057-A
(2) Hold the servovalve (6) and remove the bolts (4) and the washers (5) that hold the servovalve (6) on the servocontrol actuator.
(3) Disconnect the servovalve (6) from the electrical sockets (1) to release it from the body of the servocontrol actuator.
(4) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(5) Remove and discard the O-rings (2) and (3).
[Rev.10 from 2021]
2026.04.01 06:51:52 UTC
Removal of the Elevator Servocontrol Actuator Servovalve
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:
MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
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:
YOU MUST PUT ON AND ATTACH A SAFETY HARNESS BEFORE YOU START WORK:
- ON THE THS OR IN THE REAR FUSELAGE
- ON TOP OF THE WINGS OR PYLONS.
CAUTION:
DO NOT CAUSE DAMAGE TO THE SURFACES. THE COMPONENTS ARE MADE OF CARBONFIBER REINFORCED PLASTIC.
NOTE: The removal of the elevator servocontrol actuator 34CE1 servovalve is given. The removal of the servocontrol actuator 34CE2, 34CE3 and 34CE4 servovalves are the same.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE |
| No specific | AR | CAP - BLANKING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| 98D27309001000 | 1 | NEUTRAL SETTING TOOL - ELEVATOR |
| 98D27903500000 | 2 | PIN-SIDE STICK LOCKING |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 29-10-00-864-001-A | Depressurize the Green Hydraulic System |
| TASK 29-10-00-864-002-A | Depressurize the Yellow Hydraulic System |
| TASK 29-10-00-864-003-A | Depressurize the Blue Hydraulic System |
| TASK 29-14-00-614-001-A | Depressurization of the Hydraulic Reservoirs |
| TASK 55-13-11-000-001-A | Remove/Open of the Trimmable Horizontal Stabilizer (THS) Trailing-Edge Access-Panels |
Servocontrol Elevator - Installation of the Tool-Elevator Neutral SettingSubtask 27-34-51-860-068-A
A. Aircraft Maintenance Configuration
(1) Make sure that the elevator and the horizontal stabilizer controls are set to the neutral position.
(Ref. AMM TASK 29-10-00-864-001), (Ref. AMM TASK 29-10-00-864-002) and (Ref. AMM TASK 29-10-00-864-003).
(3) Make sure that the hydraulic reservoirs are depressurized (Ref. AMM TASK 29-14-00-614-001).
Subtask 27-34-51-865-062-A (1) Make sure that the elevator and the horizontal stabilizer controls are set to the neutral position.
NOTE: The use of the Neutral Setting Tool (98D27309001000) is optional. You can use any other tool to align the elevator to neutral position during the removal of the Servovalve.
(2) Make sure that the hydraulic systems are depressurized(Ref. AMM TASK 29-10-00-864-001), (Ref. AMM TASK 29-10-00-864-002) and (Ref. AMM TASK 29-10-00-864-003).
(3) Make sure that the hydraulic reservoirs are depressurized (Ref. AMM TASK 29-14-00-614-001).
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 27-34-51-481-053-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/ELAC1/NORM/SPLY | 15CE1 | B11 |
| 49VU | FLIGHT CONTROLS/FCDC1/SPLY | 20CE1 | B10 |
| 49VU | FLIGHT CONTROLS/THS/ACTR/MOT2 | 19CE2 | B09 |
| 49VU | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B08 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/ELAC1/NORM/SPLY | 15CE1 | B06 |
| 49VU | FLIGHT CONTROLS/FCDC1/SPLY | 20CE1 | B05 |
| 49VU | FLIGHT CONTROLS/THS/ACTR/MOT2 | 19CE2 | B04 |
| 49VU | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B03 |
| ** ON A/C ALL | |||
| 105VU | FLIGHT CONTROLS/ELAC2/STBY SPLY | 16CE2 | A02 |
| 105VU | FLT CTL/ELAC1/STBY SPLY | 16CE1 | A01 |
| 105VU | FLT CTL/SEC1/STBY SPLY | 22CE | B01 |
| 121VU | FLIGHT CONTROLS/FCDC2/SPLY | 20CE2 | Q20 |
| 121VU | FLIGHT CONTROLS/SEC2/SPLY | 21CE2 | Q18 |
| 121VU | FLIGHT CONTROLS/THS ACTR/MOT3 | 19CE3 | Q17 |
| 121VU | FLIGHT CONTROLS/THS ACTR/MOT1 | 19CE1 | Q16 |
| 121VU | FLIGHT CONTROLS/ELAC2/NORM/SPLY | 15CE2 | R20 |
C. Install Locking Devices
(1) Put the 98D27903500000 PIN-SIDE STICK LOCKING in the CAPT and F/O side stick controllers.
(2) Install the 98D27309001000 NEUTRAL SETTING TOOL - ELEVATOR on the elevator:
(a) Remove the cover from the THS hoisting point RIB11.
(b) Release the wing nut (6).
(c) Push the plate assembly (5) on the THS trailing edge. Make sure that the center plate (7) and the forward plate (8) rest on the THS surface.
(d) Remove the T-handle screw (1) and the washer (2) from the stowage on the center plate (7).
(e) Install the T-handle screw (1) and the washer (2) through the center plate (7) and the THS hoisting point.
(f) Make sure that:
Subtask 27-34-51-941-057-A (1) Put the 98D27903500000 PIN-SIDE STICK LOCKING in the CAPT and F/O side stick controllers.
(2) Install the 98D27309001000 NEUTRAL SETTING TOOL - ELEVATOR on the elevator:
(a) Remove the cover from the THS hoisting point RIB11.
(b) Release the wing nut (6).
(c) Push the plate assembly (5) on the THS trailing edge. Make sure that the center plate (7) and the forward plate (8) rest on the THS surface.
(d) Remove the T-handle screw (1) and the washer (2) from the stowage on the center plate (7).
(e) Install the T-handle screw (1) and the washer (2) through the center plate (7) and the THS hoisting point.
(f) Make sure that:
- The forward plate (8) is on the line of the rivets that attach the THS leading edge to the THS front spar.
- The bars (3) follow the line of the RIB11.
- The THS trailing edge is correctly positioned between the two parts of the plate assembly (5).
D. Safety Precautions
(1) Put the WARNING NOTICE(S) in the flight compartment to tell persons not to operate the flight controls.
(2) Put the WARNING NOTICE(S) in position to tell persons not to operate the hydraulic systems.
(3) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position at zones 334 (for the left-hand trailing-edge access-panels) and 344 (for the right-hand trailing-edge access-panels).
Subtask 27-34-51-010-057-A 4. Procedure(1) Put the WARNING NOTICE(S) in the flight compartment to tell persons not to operate the flight controls.
(2) Put the WARNING NOTICE(S) in position to tell persons not to operate the hydraulic systems.
(3) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position at zones 334 (for the left-hand trailing-edge access-panels) and 344 (for the right-hand trailing-edge access-panels).
Subtask 27-34-51-020-057-A
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
A. Removal of the Servovalve NOTE: Make sure that the servocontrol is in the neutral position to prevent damage to the servovalve feedback ball-probe.
(1) Cut and discard the lockwire between the bolts (4) and the servovalve (6). (2) Hold the servovalve (6) and remove the bolts (4) and the washers (5) that hold the servovalve (6) on the servocontrol actuator.
(3) Disconnect the servovalve (6) from the electrical sockets (1) to release it from the body of the servocontrol actuator.
(4) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(5) Remove and discard the O-rings (2) and (3).