DOC AIRBUS | AMM A320FInstallation of the Spring Rod
TASK 27-21-49-400-001-A
Installation of the Spring Rod
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 27-21-49-860-053-B
Subtask 27-21-49-910-050-A
Subtask 27-21-49-860-055-A
[Rev.10 from 2021]
2026.03.31 23:48:39 UTC
Installation of the Spring Rod
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.
ZONE: 325
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 | 1 | PIN-RIGGING |
| 98D27207546000 | 1 | PIN-RIGGING |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03GBD1) | Synthetic Oil base Grease-General Purpose Lithium Thickened - |
| (Material No.03HBD9) | Synthetic Ester base Grease-General Purpose Low Temp - |
| (Material No.05ABF1) | Retaining adhesive-Cylindrical fitting Medium strength Low viscosity - |
| (Material No.06LCG9) | Non Hardening Jointing Putty-Medium Temp. Area - - |
| (Material No.12ABE2) | Corrosion Preventive Compound-Water Displacing Oily Film System |
| No specific | lockwire corrosion-resistant steel 0.8 mm (0.032 in.) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 325 | VERTICAL STABILIZER TRAILING EDGE |
| 325CR, 325DR |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 11 | COTTER PIN | AIPC 27-21-04-08-050 |
| 18 | COTTER PIN | AIPC 27-21-04-08-050 |
| 11 | COTTER PIN | AIPC 27-21-84-11-010 |
| 18 | COTTER PIN | AIPC 27-21-84-11-010 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 27-24-00-710-002-A | Operational Test of the Rudder Servocontrols with Individual Hydraulic System |
| TASK 27-24-51-400-001-A | Installation of the Rudder Servo Control |
| TASK 29-00-00-864-001-A | Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action |
| TASK 55-33-13-010-002-A | Opening/Removal of the Trailing Edge Access-Panels of the Vertical Stabilizer |
| TASK 55-33-13-410-002-A | Closing/Installation of the Trailing Edge Access-Panels of the Vertical Stabilizer |
Spring RodSubtask 27-21-49-860-053-B
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 WARNING NOTICE(S) are in position.
(3) Make sure that the rudder pedals are in the neutral position.
(4) Make sure that the RUD TRIM indicator on the panel 110VU of the center pedestal shows zero.
(5) Make sure that the FLT CTL/FAC 1 pushbutton switch on the overhead panel 23VU is released and the OFF legend is on.
(6) Make sure that the FLT CTL/FAC 2 pushbutton switch on the overhead panel 24VU is released and the OFF legend is on.
(7) Make sure that the ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE is in position at zone 325.
(8) Make sure that the access panel 325CR is open (Ref. AMM TASK 55-33-13-010-002).
(9) Make sure that the access panel 325DR is removed (Ref. AMM TASK 55-33-13-010-002).
(10) Make sure that the 98D27207546000 PIN-RIGGING (22) is in the bellcrank assembly of the servo control 1025GM (1).
(11) Make sure that the 98D27207545000 PIN-RIGGING (21) is in the bellcrank assembly of the travel limitation unit 4CC.
Subtask 27-21-49-865-051-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 WARNING NOTICE(S) are in position.
(3) Make sure that the rudder pedals are in the neutral position.
(4) Make sure that the RUD TRIM indicator on the panel 110VU of the center pedestal shows zero.
(5) Make sure that the FLT CTL/FAC 1 pushbutton switch on the overhead panel 23VU is released and the OFF legend is on.
(6) Make sure that the FLT CTL/FAC 2 pushbutton switch on the overhead panel 24VU is released and the OFF legend is on.
(7) Make sure that the ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE is in position at zone 325.
(8) Make sure that the access panel 325CR is open (Ref. AMM TASK 55-33-13-010-002).
(9) Make sure that the access panel 325DR is removed (Ref. AMM TASK 55-33-13-010-002).
(10) Make sure that the 98D27207546000 PIN-RIGGING (22) is in the bellcrank assembly of the servo control 1025GM (1).
(11) Make sure that the 98D27207545000 PIN-RIGGING (21) is in the bellcrank assembly of the travel limitation unit 4CC.
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 27-21-49-910-050-A
A. Preparation for the Installation
(1) Make sure that the structure, the paintwork, the servo controls (1) and the lever shafts (4) are clean and show no damage.
(2) Make sure that the bolts (5),(12), the bushes (6),(13) and the nuts (10),(17) are clean and show no damage.
(3) Make sure that the bushes (7),(8),(14),(15) are not damaged and are tight in the input lever (2) and in the lever shaft (4).
(5) Examine the replacement spring rod (3) to make sure that the drainage holes and the thread inspection holes are clean.
(6) Apply Synthetic Oil base Grease-General Purpose Lithium Thickened - (Material No.03GBD1) or Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) to the threads of the bolts (5),(12) and to the bushes (6),(13).
(7) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the shafts of the bolts (5),(12).
Subtask 27-21-49-420-050-A (1) Make sure that the structure, the paintwork, the servo controls (1) and the lever shafts (4) are clean and show no damage.
(2) Make sure that the bolts (5),(12), the bushes (6),(13) and the nuts (10),(17) are clean and show no damage.
(3) Make sure that the bushes (7),(8),(14),(15) are not damaged and are tight in the input lever (2) and in the lever shaft (4).
NOTE: Safety the bushes (7),(8),(14),(15) in the input lever (2) and the lever shaft (4) with Retaining adhesive-Cylindrical fitting Medium strength Low viscosity - (Material No.05ABF1) , if necessary.
(4) Do a check of the replacement spring rod (3) to make sure that the specified length of 232.0 mm (9.1339 in.) and the break-out load of 15.0 +2.0 daN or -2.0 daN (33.7213 +4.4962 lbf or -4.4962 lbf) is correct. (5) Examine the replacement spring rod (3) to make sure that the drainage holes and the thread inspection holes are clean.
(6) Apply Synthetic Oil base Grease-General Purpose Lithium Thickened - (Material No.03GBD1) or Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) to the threads of the bolts (5),(12) and to the bushes (6),(13).
(7) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the shafts of the bolts (5),(12).
B. Installation of the Spring Rod
(1) Attach the spring rod (3) on the lever shaft (4) as follows:
(a) Move the bush (13) in the bush (14) of the lever shaft (4).
(b) Put the rod end of the spring rod (3) in the arm of the lever shaft (4).
(2) Install the spring rod (3) to the input lever (2) as follows:
(a) Move the bush (6) in the bush (7) of the input lever (2).
(b) Put the rod end of the spring rod (3) in the input lever (2) and install the bolt (5).
(3) If you can not install the bolt (5) adjust the length of the spring rod (3) as follows:
(a) Release the locknut (19) of the spring rod (3).
(b) Turn the body of the spring rod (3) until you can install the bolt (5).
(c) Make sure that the inspection holes are blocked by the threads of the rod end.
(d) Tighten the locknuts (19) and safety them to the safety washers (20) with lockwire corrosion-resistant steel 0.8 mm (0.032 in.).
(4) Install the washer (9) and the nut (10) on the bolt (5).
(5) Tighten the nuts (10) and (17) and then loosen them, if necessary, to the next cotter pin hole.
(6) Safety the nut (10) with a new AIPC 27-21-04-08-050 COTTER PIN (11) or AIPC 27-21-84-11-010 COTTER PIN (11).
(7) Safety the nut (17) with a new AIPC 27-21-04-08-050 COTTER PIN (18) or AIPC 27-21-84-11-010 COTTER PIN (18).
Subtask 27-21-49-080-050-A (1) Attach the spring rod (3) on the lever shaft (4) as follows:
(a) Move the bush (13) in the bush (14) of the lever shaft (4).
(b) Put the rod end of the spring rod (3) in the arm of the lever shaft (4).
NOTE: Make sure that the spring rod (3) is installed in the direction identified during the removal.
(c) Attach the spring rod (3) to the lever shaft (4) with the bolt (12) the washer (16) and the nut (17). (2) Install the spring rod (3) to the input lever (2) as follows:
(a) Move the bush (6) in the bush (7) of the input lever (2).
(b) Put the rod end of the spring rod (3) in the input lever (2) and install the bolt (5).
(3) If you can not install the bolt (5) adjust the length of the spring rod (3) as follows:
(a) Release the locknut (19) of the spring rod (3).
(b) Turn the body of the spring rod (3) until you can install the bolt (5).
(c) Make sure that the inspection holes are blocked by the threads of the rod end.
(d) Tighten the locknuts (19) and safety them to the safety washers (20) with lockwire corrosion-resistant steel 0.8 mm (0.032 in.).
(4) Install the washer (9) and the nut (10) on the bolt (5).
(5) Tighten the nuts (10) and (17) and then loosen them, if necessary, to the next cotter pin hole.
(6) Safety the nut (10) with a new AIPC 27-21-04-08-050 COTTER PIN (11) or AIPC 27-21-84-11-010 COTTER PIN (11).
(7) Safety the nut (17) with a new AIPC 27-21-04-08-050 COTTER PIN (18) or AIPC 27-21-84-11-010 COTTER PIN (18).
C. Removal of the Rigging Pins
(1) Remove the 98D27207545000 PIN-RIGGING (21) from the bellcrank assembly of the travel limitation unit 4CC.
(2) Remove the 98D27207546000 PIN-RIGGING (22) from the bellcrank assembly of the servo control 1025GM.
Subtask 27-21-49-865-052-A (1) Remove the 98D27207545000 PIN-RIGGING (21) from the bellcrank assembly of the travel limitation unit 4CC.
(2) Remove the 98D27207546000 PIN-RIGGING (22) from the bellcrank assembly of the servo control 1025GM.
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 27-21-49-860-054-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. Preparation for the Test
(1) Push the FLT CTL/FAC 1 pushbutton switch on the overhead panel 23VU and the OFF legend goes off.
(2) Push the FLT CTL/FAC 2 pushbutton switch on the overhead panel 24VU and the OFF legend goes off.
Subtask 27-21-49-710-050-A Subtask 27-21-49-820-050-A 5. Close-up(1) Push the FLT CTL/FAC 1 pushbutton switch on the overhead panel 23VU and the OFF legend goes off.
(2) Push the FLT CTL/FAC 2 pushbutton switch on the overhead panel 24VU and the OFF legend goes off.
Subtask 27-21-49-860-055-A
A. Put the aircraft back to the serviceable condition.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Apply a layer of Corrosion Preventive Compound-Water Displacing Oily Film System (Material No.12ABE2) to the adjacent structure.
(3) Make sure that the drain holes in the adjacent structure are not blocked.
Subtask 27-21-49-410-050-B (1) Make sure that the work area is clean and clear of tools and other items.
(2) Apply a layer of Corrosion Preventive Compound-Water Displacing Oily Film System (Material No.12ABE2) to the adjacent structure.
(3) Make sure that the drain holes in the adjacent structure are not blocked.
B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access panel 325CR and install the access panel 325DR (Ref. AMM TASK 55-33-13-410-002).
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access panel 325CR and install the access panel 325DR (Ref. AMM TASK 55-33-13-410-002).
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).