Check of Elevator Neutral Position and Servo Control Installation

TASK 27-34-00-200-003-A
Check of Elevator Neutral Position and Servo Control Installation

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.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE 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: 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.

WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

ZONE: 334
ZONE: 344
FIN: 34CE1
FIN: 34CE2
FIN: 34CE3
FIN: 34CE4

1. Reason for the Job
Refer to the MPD TASK: 273400-06
CHECK OF ELEVATOR NEUTRAL POSITION AND SERVO CONTROLS INSTALLATION
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	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	1	ACCESS PLATFORM 6M (20 FT) - ADJUSTABLE
No specific	AR	PIN - THREADED
No specific	AR	WARNING NOTICE(S)
0U190360	1	PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER
98D27309006000	1	GAUGE-ELEVATOR NEUTRAL SETTING
98D27309009003	1	COLLAR-DEPTH ACTUATOR
98D27309009004	1	COLLAR-DEPTH ACTUATOR
98D27903500000	2	PIN-SIDE STICK LOCKING

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
334	THS TRAILING EDGE
344	THS TRAILING EDGE
312AR, 334DB, 344DB, 822

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 27-34-00-820-003-B	Adjustment of the Elevator and Hydraulic Actuation to 0.5 Degrees Nose-Up with the Gauge-Elevator Neutral Setting (98D27309006000)
TASK 27-34-00-820-003-B-01	Adjustment of the Elevator and Hydraulic Actuation to 0.5 Degrees Nose-Up with the Gauge-Elevator Neutral Setting (98D27309002000)
TASK 27-34-51-000-009-A	Removal of the Servo Control Actuator Eye-End
TASK 27-34-51-200-001-A	In Service Wear Limits of the Elevator Servo-Control Attach-Fittings
TASK 27-34-51-400-001-A	Installation of the Elevator Servo Control
TASK 27-34-51-400-006-A	Installation of the Servo Control Actuator Eye-End
TASK 29-10-00-863-003-A	Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A-01	Pressurize the Blue Hydraulic System with the Blue Electric Pump
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 29-23-00-863-001-A	Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
TASK 29-23-00-864-001-A	Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
TASK 29-24-00-863-001-A	Pressurize the Yellow Hydraulic System with the Electric Pump
TASK 29-24-00-864-001-A	Depressurize the Yellow Hydraulic System
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access
TASK 55-13-11-000-001-A	Remove/Open of the Trimmable Horizontal Stabilizer (THS) Trailing-Edge Access-Panels
TASK 55-13-11-400-001-A	Install/Close of the Trimmable Horizontal Stabilizer (THS) Trailing-Edge Access-Panels
Elevator Eye-end Correct Installation
Installation of the Pin-rigging
Installation of the Elevator Neutral Setting Gauge
Installation of the Yoke
Elevator Position Transducer Unit

3. Job Set-up
Subtask 27-34-00-010-068-A

A. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position in zone 312.
(2) Put the ACCESS PLATFORM 6M (20 FT) - ADJUSTABLE in position in these zones:
(a) 334 for the left elevator.
(b) 344 for the right elevator.
(3) Open the access door 312AR.
(4) Open the THS trailing-edge access-panels (Ref. AMM TASK 55-13-11-000-001):
(a) 334DB for the left elevator.
(b) 344DB for the right elevator.
(5) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 822.
(6) Open the access door 822 (Ref. AMM TASK 52-41-00-010-002).
(7) On the battery power center 105VU:

loosen the two screws and remove the protective cover.

Subtask 27-34-00-865-064-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

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/SEC1/NORM/SPLY	21CE1	B08
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
49VU	FLIGHT CONTROLS/FCDC1/SPLY	20CE1	B05
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	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
121VU	FLIGHT CONTROLS/FCDC2/SPLY	20CE2	Q20
121VU	FLIGHT CONTROLS/SEC2/SPLY	21CE2	Q18
121VU	FLIGHT CONTROLS/ELAC2/NORM/SPLY	15CE2	R20

Subtask 27-34-00-860-076-A

C. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) On the overhead panel 20VU:

make sure that the three OFF/NAV/ATT selector switches are in the OFF position.

(3) 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).
(4) On the center pedestal, make sure that the pitch-trim control wheels are set to 0.
(5) Put a WARNING NOTICE(S) on the pitch-trim control wheels to tell persons not to move the THS.
(6) Safety the CAPT and F/O side sticks with the 98D27903500000 PIN-SIDE STICK LOCKING.
(7) Put WARNING NOTICE(S) on the CAPT and F/O side sticks to tell persons not to move the side sticks.
(8) Make sure that there is no warning related to the LGCIUs on the upper ECAM display unit.

4. Procedure
Subtask 27-34-00-200-050-A

A. Check of the Installation of the Servo Controls (34CE1, 34CE2, 34CE3, 34CE4)

Elevator Eye-end Correct Installation

(1) Move the elevator by hand to the upper position and install the 98D27309009003 COLLAR-DEPTH ACTUATOR or 98D27309009004 COLLAR-DEPTH ACTUATOR on the servo control.

NOTE: Only the last version of the 98D27309009003 COLLAR-DEPTH ACTUATOR is applicable to the servo control with a roller bearing.

(2) Make sure that the installation of the servo-control actuator eye-end is correct:

Make sure that the key washer (3) is fully engaged on the servo control fitting (4).
Make sure that the face serrations of the locking washer (2) and the key washer (3) are fully engaged.
Make sure that the torque value of the lock nut (1) is between 3 m.daN (22.12 lbf.ft) and 3.5 m.daN (25.81 lbf.ft).

(a) If one of the above points is not correct, do these steps:
1 Remove the servo-control actuator eye-end (Ref. AMM TASK 27-34-51-000-009).
2 Do an inspection of the threads of the eye-end for wear, marks and scratches.
3 Do an inspection of the locking washer (2) and the key washer (3) for wear on the face serrations.
a If an item is not correct, send the full unit to workshop for repair.
b If all items are correct, install the servo-control actuator eye-end (Ref. AMM TASK 27-34-51-400-006).

Subtask 27-34-00-420-052-A

B. Check of the Attachment Torque Values of the Servo Controls (34CE1, 34CE2, 34CE3, 34CE4)
(1) Make sure that the torque values of the servo-control attachments are correct (Ref. AMM TASK 27-34-51-400-001).
(a) If the torque values are not correct, do a check of the servo-control attachments (Ref. AMM TASK 27-34-51-200-001).
(b) Make sure that the torque values of the servo-control attachments are correct (Ref. AMM TASK 27-34-51-400-001).
(2) Remove the 98D27309009003 COLLAR-DEPTH ACTUATOR or 98D27309009004 COLLAR-DEPTH ACTUATOR.

Subtask 27-34-00-480-061-A

C. Installation of the Tools

Installation of the Pin-rigging

Installation of the Elevator Neutral Setting Gauge

Installation of the Yoke

(1) Install the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER (5) on the screwjack of the THS actuator (6).
(2) Install the 98D27309006000 GAUGE-ELEVATOR NEUTRAL SETTING on the right side:
(a) Remove the screw (12) and the protector (13) from the setting bar (10).
(b) Remove the other protectors from the setting bar.
(c) Remove the two screws (7) from the access panel.
(d) Install the yoke (8) on the THS.
To keep a good contact between the yoke and the THS, you must not TORQUE the PIN - THREADED.
(e) Install the two PIN - THREADED (9) on the yoke (8).
(f) Install the setting bar (10) on the yoke (8).

Subtask 27-34-00-860-078-A

D. Preparation for the Adjustment

CAUTION: MAKE SURE THAT YOU REMOVE THE "COLLAR-ELEVATOR SERVO CONTROL SAFETY" BEFORE YOU PRESSURIZE THE ELEVATOR SERVO CONTROL. IF YOU DO NOT REMOVE THE COLLAR, YOU CAN CAUSE DAMAGE TO THE ELEVATOR SERVO CONTROL.

(1) Pressurize the aircraft hydraulic systems
(Ref. AMM TASK 29-23-00-863-001) (Ref. AMM TASK 29-24-00-863-001) (Ref. AMM TASK 29-10-00-863-003).
(2) On the overhead panel 23VU:

release the FLT CTL/ELAC 1 and FLT CTL/SEC 1 pushbutton switches (the OFF legends come on).

(3) On the overhead panel 24VU:

make sure that the FLT CTL/ELAC 2 and FLT CTL/SEC 2 pushbutton switches are pushed (the FAULT and OFF legends are off).

(4) On the upper ECAM display unit:

make sure that the F/CTL ELAC 2 FAULT or F/CTL ELAC 2 PITCH FAULT warning is not shown.

(5) On the maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/G, B and Y pushbutton switches are pushed (the OFF legends are off).

Subtask 27-34-00-820-071-A

E. Check of the Adjustment of the Elevator Servocontrol

Installation of the Elevator Neutral Setting Gauge

Installation of the Yoke

Elevator Position Transducer Unit

NOTE: At this step, the right inboard servocontrol (Yellow) is in the active mode. The right outboard servocontrol (Blue) is in the damping mode.

(1) Push with your hands on the front and on the middle of the setting bar and make sure that the contact of the setting bar (10) between the yoke (8) and the THS surface is correct.
(2) Make sure that the gap between the upper surface of the elevator and the end part of the 98D27309006000 GAUGE-ELEVATOR NEUTRAL SETTING (10) is in the limits of the feeler gauge (11).
(3) Make sure that you can easily engage/disengage the rigging pin into/from the elevator position transducer-unit (14).
(4) If the servocontrol or the transducer unit is not adjusted, do this procedure (Ref. AMM TASK 27-34-00-820-003).
(5) On the overhead panel 24VU, release the FLT CTL/ELAC 2 and FLT CTL/SEC 2 pushbutton switches (the OFF legends come on).
(6) On the overhead panel 23VU, push the FLT CTL/ELAC 1 and FLT CTL/SEC 1 pushbutton switches (the OFF legends go off).
(7) Make sure that the F/CTL ELAC 1 FAULT or F/CTL ELAC 1 PITCH FAULT warning is not shown on the upper ECAM display unit.

NOTE: At this step, the right inboard servocontrol (Yellow) is in the damping mode. The right outboard servocontrol (Blue) is in the active mode.

(8) Do steps (1) thru (4) again for the right outboard servocontrol.
(9) Remove the 98D27309006000 GAUGE-ELEVATOR NEUTRAL SETTING from the upper surface of the right elevator.
(10) Install the 98D27309006000 GAUGE-ELEVATOR NEUTRAL SETTING on the upper surface of the left elevator.
(11) On the overhead panel 24VU, push the FLT CTL/ELAC 2 and FLT CTL/SEC 2 pushbutton switches (the OFF legends go off).
(12) Make sure that the F/CTL ELAC 2 FAULT or F/CTL ELAC 2 PITCH FAULT warning is not shown on the upper ECAM display unit.
(13) On the overhead panel 23VU, release the FLT CTL/ELAC 1 and FLT CTL/SEC 1 pushbutton switches (the OFF legends come on).

NOTE: At this step, the left inboard servocontrol (Green) is in the active mode. The left outboard servocontrol (Blue) is in the damping mode.

(14) Do steps (1) thru (4) again for the left inboard servocontrol.
(15) On the overhead panel 24VU, release the FLT CTL/ELAC 2 and FLT CTL/SEC 2 pushbutton switches (the OFF legends come on).
(16) On the overhead panel 23VU, push the FLT CTL/ELAC 1 and FLT CTL/SEC 1 pushbutton switches (the OFF legends go off).
(17) Make sure that the F/CTL ELAC 1 FAULT or F/CTL ELAC 1 PITCH FAULT warning is not shown on the upper ECAM display unit.

NOTE: At this step, the left inboard servocontrol (Green) is in the damping mode. The left outboard servocontrol (Blue) is in the active mode.

(18) Do steps (1) thru (4) again for the left outboard servocontrol.
(19) On the overhead panel 24VU, push the FLT CTL/ELAC 2 and FLT CTL/SEC 2 pushbutton switches (the OFF legends go off).

5. Close-up
Subtask 27-34-00-080-055-A

A. Removal of the Tools

Installation of the Pin-rigging

Installation of the Elevator Neutral Setting Gauge

(1) Remove the 98D27309006000 GAUGE-ELEVATOR NEUTRAL SETTING from the upper surface of the left elevator.
(a) Remove the setting bar (10) from the yoke (8).
(b) Remove the two threaded pins (9) and the yoke.
(c) Install the two screws (7) on the access panel.
(d) Install the protector (13) and the screw (12) on the setting bar (10).
(e) Install the other protectors on the setting bar.
(2) Remove the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER (5) from the screwjack of the THS actuator (6).
(3) Remove the 98D27903500000 PIN-SIDE STICK LOCKING from the CAPT and F/O side sticks.

Subtask 27-34-00-860-077-A

B. Put the aircraft back to its initial configuration.
(1) Depressurize the aircraft hydraulic systems
(Ref. AMM TASK 29-23-00-864-001) (Ref. AMM TASK 29-24-00-864-001) (Ref. AMM TASK 29-10-00-864-003).
(2) Remove the WARNING NOTICE(S).
(3) Make sure that the work area is clean and clear of tools and other items.
(4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 27-34-00-410-066-A

C. Close Access
(1) Close the access door 312AR.
(2) Close the THS trailing-edge access-panels (Ref. AMM TASK 55-13-11-400-001):
(a) 334DB for the left elevator.
(b) 344DB for the right elevator.
(3) Install the protective cover on the battery power center 105VU.
(4) Tighten the two screws.
(5) Close the access door 822 (Ref. AMM TASK 52-41-00-410-002).
(6) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 23:50:16 UTC