DOC AIRBUS | AMM A320FRemoval of the Rudder Travel Limitation Unit
TASK 27-23-51-000-001-A
Removal of the Rudder Travel Limitation Unit
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 27-23-51-861-050-A Subtask 27-23-51-865-055-A
Subtask 27-23-51-020-050-B
[Rev.10 from 2021]
2026.03.31 23:49:11 UTC
Removal of the Rudder Travel Limitation Unit
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
1. Reason for the Job- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE |
| No specific | AR | CAP - BLANKING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| 98D27207545000 | 3 | PIN-RIGGING |
| 98D27207546000 | 1 | PIN-RIGGING |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 325 | VERTICAL STABILIZER TRAILING EDGE |
| 325DL, 325DR |
| 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 29-00-00-864-001-A | Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action |
| 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 29-10-00-864-003-A | Depressurize the Blue Hydraulic System |
Rudder Travel Limitation Unit 4CCSubtask 27-23-51-861-050-A Subtask 27-23-51-865-055-A
B. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 27-23-51-860-051-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AUTO FLT/FAC1/28VDC | 5CC1 | B04 |
| 49VU | AUTO FLT/FAC1/26VAC | 14CC1 | B03 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | AUTO FLT/FAC1/28VDC | 5CC1 | H10 |
| 49VU | AUTO FLT/FAC1/26VAC | 14CC1 | H09 |
| ** ON A/C ALL | |||
| 121VU | AUTO FLT/RUDDER/TRIM/IND | 15CC | M20 |
| 121VU | AUTO FLT/FAC2/28VDC | 5CC2 | M19 |
| 121VU | AUTO FLT/FAC2/26VAC | 14CC2 | M18 |
C. Aircraft Maintenance Configuration
(2) Put the rudder pedals in the neutral position.
(3) Make sure that the RUD TRIM indicator on the panel 110VU of the center pedestal shows zero.
(4) Release the FLT CTL/FAC 1 pushbutton switch on the overhead panel 23VU and the OFF legend comes on.
(5) Release the FLT CTL/FAC 2 pushbutton switch on the overhead panel 24VU and the OFF legend comes on.
(6) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003).
Subtask 27-23-51-865-050-A 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.
(1) Pressurize the Blue hydraulic system with the electric pump. (Ref. AMM TASK 29-10-00-863-003)(2) Put the rudder pedals in the neutral position.
(3) Make sure that the RUD TRIM indicator on the panel 110VU of the center pedestal shows zero.
(4) Release the FLT CTL/FAC 1 pushbutton switch on the overhead panel 23VU and the OFF legend comes on.
(5) Release the FLT CTL/FAC 2 pushbutton switch on the overhead panel 24VU and the OFF legend comes on.
(6) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003).
D. Open, safety and tag this(these) circuit breaker(s):
Subtask 27-23-51-860-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AUTO FLT/FAC1/28VDC | 5CC1 | B04 |
| 49VU | AUTO FLT/FAC1/26VAC | 14CC1 | B03 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | AUTO FLT/FAC1/28VDC | 5CC1 | H10 |
| 49VU | AUTO FLT/FAC1/26VAC | 14CC1 | H09 |
| ** ON A/C ALL | |||
| 121VU | AUTO FLT/RUDDER/TRIM/IND | 15CC | M20 |
| 121VU | AUTO FLT/FAC2/28VDC | 5CC2 | M19 |
| 121VU | AUTO FLT/FAC2/26VAC | 14CC2 | M18 |
E. Aircraft Maintenance Configuration
(1) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001)
(2) De-energize the aircraft electrical circuits. (Ref. AMM TASK 24-41-00-862-002)
(3) Put the WARNING NOTICE(S) in the flight compartment to tell persons not to operate the flight controls.
Subtask 27-23-51-010-050-A (1) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001)
(2) De-energize the aircraft electrical circuits. (Ref. AMM TASK 24-41-00-862-002)
(3) Put the WARNING NOTICE(S) in the flight compartment to tell persons not to operate the flight controls.
F. Get Access
(1) Put the ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE in position at zone 325.
(2) Open the access panels 325DL 325DR at the trailing edge of the vertical stabilizer (1).
Subtask 27-23-51-480-050-A (1) Put the ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE in position at zone 325.
(2) Open the access panels 325DL 325DR at the trailing edge of the vertical stabilizer (1).
G. Installation of the Rigging Pins
(1) Put the 98D27207545000 PIN-RIGGING (32) in the bellcrank assembly (4) for the travel limitation unit 4CC (5).
(2) Put the 98D27207545000 PIN-RIGGING and the 98D27207545000 PIN-RIGGING (32) through the levers (6),(16) of the travel limitation unit 4CC (5).
(3) Put the 98D27207546000 PIN-RIGGING (33) in the bellcrank assembly for the servo actuator 1025GM.
4. Procedure(1) Put the 98D27207545000 PIN-RIGGING (32) in the bellcrank assembly (4) for the travel limitation unit 4CC (5).
(2) Put the 98D27207545000 PIN-RIGGING and the 98D27207545000 PIN-RIGGING (32) through the levers (6),(16) of the travel limitation unit 4CC (5).
(3) Put the 98D27207546000 PIN-RIGGING (33) in the bellcrank assembly for the servo actuator 1025GM.
Subtask 27-23-51-020-050-B
A. Removal of the Rudder Travel Limitation Unit 4CC
(1) Remove the electrical connectors (17) as follows:
(a) Disconnect the electrical connectors (17) from the plugs on the bottom of the travel limitation unit 4CC (5).
(b) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(2) Disconnect the control rods (14) and (15) from the rudder travel limitation unit (5) as follows:
(a) Remove and discard the cotter pins (13).
(b) Remove the nuts (12), the washers (11) and the bolts (7).
(c) Move the control rods (14),(15) clear of the levers (6),(16).
(d) Remove the bush (10) from the levers (6),(16).
(4) Remove the rudder travel limitation unit (5) from the support bracket (19) as follows:
(a) Release the tabwashers (22).
(b) Hold the rudder travel limitation unit (5) and remove the bolts (21) with the tabwashers (22).
(c) Remove the rudder travel limitation unit (5) from the support bracket (19).
(d) Discard the tabwashers (22).
(5) Remove the rudder travel limitation unit (5) from the bracket (20) as follows:
(a) Remove the bolts (24) and the washers (23).
(b) Hold the rudder travel limitation unit (5) and remove the bracket (20).
(c) Make sure that the levers (6) and (16) of the travel limitation unit (5) are safetied with the pins (32), to protect the component during the storage.
(1) Remove the electrical connectors (17) as follows:
(a) Disconnect the electrical connectors (17) from the plugs on the bottom of the travel limitation unit 4CC (5).
(b) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(2) Disconnect the control rods (14) and (15) from the rudder travel limitation unit (5) as follows:
(a) Remove and discard the cotter pins (13).
(b) Remove the nuts (12), the washers (11) and the bolts (7).
(c) Move the control rods (14),(15) clear of the levers (6),(16).
(d) Remove the bush (10) from the levers (6),(16).
NOTE: Do not remove the bushes (8),(9) from the levers (6),(16). The bushes (8),(9) are safetied in the levers (6),(16) with Loctite.
(3) Remove the bolt (30), the nut (31) and the bonding strap (18). (4) Remove the rudder travel limitation unit (5) from the support bracket (19) as follows:
(a) Release the tabwashers (22).
(b) Hold the rudder travel limitation unit (5) and remove the bolts (21) with the tabwashers (22).
(c) Remove the rudder travel limitation unit (5) from the support bracket (19).
(d) Discard the tabwashers (22).
(5) Remove the rudder travel limitation unit (5) from the bracket (20) as follows:
(a) Remove the bolts (24) and the washers (23).
(b) Hold the rudder travel limitation unit (5) and remove the bracket (20).
(c) Make sure that the levers (6) and (16) of the travel limitation unit (5) are safetied with the pins (32), to protect the component during the storage.