DOC AIRBUS | AMM A320FInstallation of the Rudder Travel-Limitation Unit
TASK 27-23-51-400-001-A
Installation of the Rudder Travel-Limitation Unit
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 27-23-51-860-054-A
Subtask 27-23-51-910-050-B
Subtask 27-23-51-410-050-A
[Rev.10 from 2021]
2026.03.31 23:49:12 UTC
Installation 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:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
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:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
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 10M (33 FT) - ADJUSTABLE |
| No specific | AR | WARNING NOTICE(S) |
| 98D27207545000 | 3 | PIN-RIGGING |
| 98D27207546000 | 1 | PIN-RIGGING |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.05ABF1) | Retaining adhesive-Cylindrical fitting Medium strength Low viscosity - |
| (Material No.06AAC1) | Polysulfide Sealant-General Purpose Interfay - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 325 | VERTICAL STABILIZER TRAILING EDGE |
| 325DL, 325DR |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 13 | COTTER PINS | AIPC 27-21-47-01-210 |
| 22 | TABWASHERS | AIPC 27-23-04-01-505 |
| 22 | TABWASHERS | AIPC 27-23-84-01-350 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 22-61-00-710-001-A | Operational Test of the Rudder-Travel Limiting Function |
| 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 |
Rudder Travel Limitation Unit 4CCSubtask 27-23-51-860-054-A
A. 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) Make sure that the aircraft electrical circuits are de-energized (Ref. AMM TASK 24-41-00-862-002).
(3) Make sure that the WARNING NOTICE(S) are in position.
(4) Make sure that the rudder pedals are in the neutral position.
(5) Make sure that the RUD TRIM indicator on the panel 110VU of the center pedestal shows zero.
(6) Make sure that the FLT CTL/FAC 1 pushbutton switch on the overhead panel 23VU is released.
(7) Make sure that the FLT CTL/FAC 2 pushbutton switch on the overhead panel 24VU is released.
(8) Make sure that the ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE is in position at zone 325.
(9) Make sure that the access panels 325DL 325DR at the trailing edge of the vertical stabilizer (1) are open.
(10) Make sure that the 98D27207545000 PIN-RIGGING (32) is installed in the bellcrank assembly (4) for the travel limitation unit 4CC.
(11) Make sure that the 98D27207546000 PIN-RIGGING (33) is installed in the bellcrank assembly for the servo actuator 1025GM.
Subtask 27-23-51-865-052-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) Make sure that the aircraft electrical circuits are de-energized (Ref. AMM TASK 24-41-00-862-002).
(3) Make sure that the WARNING NOTICE(S) are in position.
(4) Make sure that the rudder pedals are in the neutral position.
(5) Make sure that the RUD TRIM indicator on the panel 110VU of the center pedestal shows zero.
(6) Make sure that the FLT CTL/FAC 1 pushbutton switch on the overhead panel 23VU is released.
(7) Make sure that the FLT CTL/FAC 2 pushbutton switch on the overhead panel 24VU is released.
(8) Make sure that the ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE is in position at zone 325.
(9) Make sure that the access panels 325DL 325DR at the trailing edge of the vertical stabilizer (1) are open.
(10) Make sure that the 98D27207545000 PIN-RIGGING (32) is installed in the bellcrank assembly (4) for the travel limitation unit 4CC.
(11) Make sure that the 98D27207546000 PIN-RIGGING (33) is installed in the bellcrank assembly for the servo actuator 1025GM.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| 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 |
Subtask 27-23-51-910-050-B
A. Preparation for Installation
(1) Clean the interface of the support bracket (19) with Non Aqueous Cleaner-General - - (Material No.08BAA9) and let it dry.
(2) Make sure that the bellcrank assy (4), the control rods (14),(15) and the support bracket (19) are in the correct condition.
(3) Make sure that the bonding strap (18) is in the correct condition.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Make sure that the bolts (7),(21),(24),the bushes (8),(9),(10) and the nuts (12) are clean and in a good condition.
Subtask 27-23-51-560-050-B (1) Clean the interface of the support bracket (19) with Non Aqueous Cleaner-General - - (Material No.08BAA9) and let it dry.
(2) Make sure that the bellcrank assy (4), the control rods (14),(15) and the support bracket (19) are in the correct condition.
(3) Make sure that the bonding strap (18) is in the correct condition.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Make sure that the bolts (7),(21),(24),the bushes (8),(9),(10) and the nuts (12) are clean and in a good condition.
B. Preparation of the Replacement Component
(1) Make sure that the 98D27207545000 PIN-RIGGING and the 98D27207545000 PIN-RIGGING (32) are installed in the levers (6) and (16) of the replacement travel limitation unit (5).
(2) Apply Polysulfide Sealant-General Purpose Interfay - (Material No.06AAC1) to the component interface of the rudder travel limitation unit (5), the bracket (20) and the support bracket (19).
Subtask 27-23-51-420-050-B (1) Make sure that the 98D27207545000 PIN-RIGGING and the 98D27207545000 PIN-RIGGING (32) are installed in the levers (6) and (16) of the replacement travel limitation unit (5).
(2) Apply Polysulfide Sealant-General Purpose Interfay - (Material No.06AAC1) to the component interface of the rudder travel limitation unit (5), the bracket (20) and the support bracket (19).
NOTE: Make sure that the bonding area of the bracket (20) stays clean.
C. Installation of the Rudder Travel-Limitation Unit 4CC
(1) Install the rudder travel-limitation unit (5) on the bracket (20) as follows:
(a) Put the rudder travel-limitation unit (5) in position at the bracket (20). Attach it with the bolts (24) and the washers (23).
(b) Tighten the bolts (24).
(c) Remove the Polysulfide Sealant-General Purpose Interfay - (Material No.06AAC1) that has come out at the connection of the travel limitation unit (5) and the bracket (20).
(2) Install the rudder travel-limitation unit (5) on the support bracket (19) as follows:
(a) Put the rudder travel-limitation unit (5) with the bracket (20) in position at the support bracket (19). Attach it with the bolts (21) and the new tabwashers (22).
(b) Tighten the bolts (21).
(c) Safety the bolts (21) with the AIPC 27-23-04-01-505 TABWASHERS (22) or AIPC 27-23-84-01-350 TABWASHERS (22).
(d) Remove the Polysulfide Sealant-General Purpose Interfay - (Material No.06AAC1) that has come out at the connection of the bracket (20) and the support bracket (19).
(e) Install the bonding strap (18) with the bolt (30) and the nut (31).
(f) Make sure that the bonding strap (18) is correctly installed (Ref. AMM TASK 20-28-00-912-802).
(3) Connect the control rods (14) and (15) to the travel-limitation unit (5) as follows:
(a) Make sure that the bushes (8) and (9) are tight in the levers (6) and (16).
(b) Apply the Retaining adhesive-Cylindrical fitting Medium strength Low viscosity - (Material No.05ABF1) to the bushes (8) and (9) and safety them in the levers (6) and (16) if necessary.
(c) Put the bush (10) into the bush (9) at the levers (6) and (16).
(d) Put the control rods (14) and (15) in position at the levers (6) and (16).
(e) Install the bolts (7), the washers (11) and the nuts (12).
(f) Make sure that the bushes (8), (9) and (10) are correctly installed in the levers (6) and (16).
(g) Tighten the nuts (12).
(h) Safety the nuts (12) with the AIPC 27-21-47-01-210 COTTER PINS (13).
(4) Connect the electrical connectors (17):
(a) Make sure that all the electrical connections are clean and in the correct condition.
(b) Remove the blanking caps and connect the electrical connectors (17). Do this on the bottom of the rudder travel limitation unit (5).
Subtask 27-23-51-080-050-A (1) Install the rudder travel-limitation unit (5) on the bracket (20) as follows:
(a) Put the rudder travel-limitation unit (5) in position at the bracket (20). Attach it with the bolts (24) and the washers (23).
(b) Tighten the bolts (24).
(c) Remove the Polysulfide Sealant-General Purpose Interfay - (Material No.06AAC1) that has come out at the connection of the travel limitation unit (5) and the bracket (20).
(2) Install the rudder travel-limitation unit (5) on the support bracket (19) as follows:
(a) Put the rudder travel-limitation unit (5) with the bracket (20) in position at the support bracket (19). Attach it with the bolts (21) and the new tabwashers (22).
(b) Tighten the bolts (21).
(c) Safety the bolts (21) with the AIPC 27-23-04-01-505 TABWASHERS (22) or AIPC 27-23-84-01-350 TABWASHERS (22).
(d) Remove the Polysulfide Sealant-General Purpose Interfay - (Material No.06AAC1) that has come out at the connection of the bracket (20) and the support bracket (19).
(e) Install the bonding strap (18) with the bolt (30) and the nut (31).
(f) Make sure that the bonding strap (18) is correctly installed (Ref. AMM TASK 20-28-00-912-802).
(3) Connect the control rods (14) and (15) to the travel-limitation unit (5) as follows:
(a) Make sure that the bushes (8) and (9) are tight in the levers (6) and (16).
(b) Apply the Retaining adhesive-Cylindrical fitting Medium strength Low viscosity - (Material No.05ABF1) to the bushes (8) and (9) and safety them in the levers (6) and (16) if necessary.
(c) Put the bush (10) into the bush (9) at the levers (6) and (16).
(d) Put the control rods (14) and (15) in position at the levers (6) and (16).
(e) Install the bolts (7), the washers (11) and the nuts (12).
(f) Make sure that the bushes (8), (9) and (10) are correctly installed in the levers (6) and (16).
(g) Tighten the nuts (12).
(h) Safety the nuts (12) with the AIPC 27-21-47-01-210 COTTER PINS (13).
(4) Connect the electrical connectors (17):
(a) Make sure that all the electrical connections are clean and in the correct condition.
(b) Remove the blanking caps and connect the electrical connectors (17). Do this on the bottom of the rudder travel limitation unit (5).
D. Removal of the Rigging Pins
(1) Remove the 98D27207545000 PIN-RIGGING (32) from the bellcrank assy (4).
(2) Remove the 98D27207545000 PIN-RIGGING (32) from the levers (6),(16) of the travel limitation unit 4CC (5).
(3) Remove the 98D27207546000 PIN-RIGGING (33) from the bellcrank assembly of the servo actuator 1025GM.
Subtask 27-23-51-865-051-A (1) Remove the 98D27207545000 PIN-RIGGING (32) from the bellcrank assy (4).
(2) Remove the 98D27207545000 PIN-RIGGING (32) from the levers (6),(16) of the travel limitation unit 4CC (5).
(3) Remove the 98D27207546000 PIN-RIGGING (33) from the bellcrank assembly of the servo actuator 1025GM.
E. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 27-23-51-860-055-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 |
F. Preparation for the Test
(1) Make sure that the travel range of the rudder (2), the rudder travel limitation unit (5) is clear of tools and other items.
(2) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(3) On the overhead panel 23VU, push the FLT CTL/FAC 1 pushbutton switch and the OFF legend goes off.
(4) On the overhead panel 24VU, push the FLT CTL/FAC 2 pushbutton switch and the OFF legend goes off.
Subtask 27-23-51-710-050-A (1) Make sure that the travel range of the rudder (2), the rudder travel limitation unit (5) is clear of tools and other items.
(2) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(3) On the overhead panel 23VU, push the FLT CTL/FAC 1 pushbutton switch and the OFF legend goes off.
(4) On the overhead panel 24VU, push the FLT CTL/FAC 2 pushbutton switch and the OFF legend goes off.
G. Test
(1) Do the operational test of the rudder travel limiting function (Ref. AMM TASK 22-61-00-710-001).
5. Close-up(1) Do the operational test of the rudder travel limiting function (Ref. AMM TASK 22-61-00-710-001).
Subtask 27-23-51-410-050-A