DOC AIRBUS | AMM A320FInstallation of the FWD LH Tie-Rods and Vibration Isolator (APS 3200)
TASK 49-12-51-400-002-A
Installation of the FWD LH Tie-Rods and Vibration Isolator (APS 3200)
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 49-12-51-860-052-A ** ON A/C NOT FOR ALL
Subtask 49-12-51-210-053-A ** ON A/C NOT FOR ALL
Subtask 49-12-51-410-051-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 01:27:03 UTC
Installation of the FWD LH Tie-Rods and Vibration Isolator (APS 3200)
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
FIN: 4035KM ** ON A/C NOT FOR ALL
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 3M (10 FT) |
| No specific | AR | BRUSH - BRISTLED, FIBER, MEDIUM |
| No specific | Torque wrench: range to between 0.26 and 0.22 m.daN (23.01 and 19.47 lbf.in )  | |
| No specific | Torque wrench: range to between 0.35 and 0.3 m.daN (30.97 and 26.55 lbf.in ) | |
| No specific | Torque wrench: range to between 0.75 and 0.55 m.daN (66.37 and 48.67 lbf.in ) | |
| No specific | Torque wrench: range to between 3.1 and 2.5 m.daN (22.86 and 18.44 lbf.ft ) | |
| 98A49107504001 | 1 | PROTECTOR-THREADS,APU MOUNTING BOLTS |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.06LCG9) | Non Hardening Jointing Putty-Medium Temp. Area - - |
| (Material No.06LDG2) | Non Hardening Jointing Putty-High Temp. Area - Structure |
| (Material No.08ABC1) | Aqueous Cleaner-Aircraft Exterior Pressure Spraying - |
| (Material No.12ABE2) | Corrosion Preventive Compound-Water Displacing Oily Film System |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 315AL, 316AR |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 1 | COTTER PINS | AIPC 49-12-04-02-110 |
| 18 | COTTER PIN | AIPC 49-12-04-02-110 |
| 7 | COTTER PINS | AIPC 49-12-04-02-120 |
| 1 | COTTER PIN | AIPC 49-12-84-41-070 |
| 18 | COTTER PIN | AIPC 49-12-84-41-070 |
| 7 | COTTER PINS | AIPC 49-12-84-41-080 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| 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 49-00-00-080-001-A | Removal of the APU Hoist Tool |
| TASK 52-41-00-010-001-A | Open the APU Doors for Access |
| TASK 52-41-00-410-001-A | Close the APU Doors after Access |
| TASK 52-41-21-000-001-A | Removal of APU Access Door 315AL |
| TASK 52-41-22-000-001-A | Removal of the APU Access Door and the related Door Mechanism |
FWD LH Tie-Rods and Vibration IsolatorSubtask 49-12-51-860-052-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Make sure that the warning notices is on panel 25VU to tell persons not to start the APU.
(2) Make sure that the ground service network is energized (Ref. AMM TASK 24-41-00-861-002).
(3) Make sure that the hydraulic systems are depressurized (Ref. AMM TASK 29-00-00-864-001).
(4) Make sure that the ACCESS PLATFORM 3M (10 FT) is in position below the access doors 315AL and 316AR.
(5) Make sure that the APU access doors 315AL, 316AR are open (Ref. AMM TASK 52-41-00-010-001) or removed (Ref. AMM TASK 52-41-21-000-001) and (Ref. AMM TASK 52-41-22-000-001).
(6) Make sure that the light switch 11LJ is set to on.
Subtask 49-12-51-865-054-A ** ON A/C NOT FOR ALL (1) Make sure that the warning notices is on panel 25VU to tell persons not to start the APU.
(2) Make sure that the ground service network is energized (Ref. AMM TASK 24-41-00-861-002).
(3) Make sure that the hydraulic systems are depressurized (Ref. AMM TASK 29-00-00-864-001).
(4) Make sure that the ACCESS PLATFORM 3M (10 FT) is in position below the access doors 315AL and 316AR.
(5) Make sure that the APU access doors 315AL, 316AR are open (Ref. AMM TASK 52-41-00-010-001) or removed (Ref. AMM TASK 52-41-21-000-001) and (Ref. AMM TASK 52-41-22-000-001).
(6) Make sure that the light switch 11LJ is set to on.
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 | |||
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/ECB/SPLY | 1KD | L41 |
Subtask 49-12-51-210-053-A ** ON A/C NOT FOR ALL
A. Preparation for Installation
(1) Clean the tie-rods (5), (10) and (11) and the vibration isolator (12) with solvent Aqueous Cleaner-Aircraft Exterior Pressure Spraying - (Material No.08ABC1) and a BRUSH - BRISTLED, FIBER, MEDIUM. condition.
(2) Do a check and make sure that the tie-rods (5), (10) and (11) are in correct condition.
(3) If the tie-rods and/or the vibration isolator are damaged, replace them if necessary.
(4) Clean and examine the attachment brackets, the APU mount-bracket (14) and the structure for damage and replace if nescessary.
Subtask 49-12-51-420-051-B ** ON A/C NOT FOR ALL (1) Clean the tie-rods (5), (10) and (11) and the vibration isolator (12) with solvent Aqueous Cleaner-Aircraft Exterior Pressure Spraying - (Material No.08ABC1) and a BRUSH - BRISTLED, FIBER, MEDIUM. condition.
(2) Do a check and make sure that the tie-rods (5), (10) and (11) are in correct condition.
(3) If the tie-rods and/or the vibration isolator are damaged, replace them if necessary.
(4) Clean and examine the attachment brackets, the APU mount-bracket (14) and the structure for damage and replace if nescessary.
B. Installation of the Vibration Isolator
(a) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) or Non Hardening Jointing Putty-High Temp. Area - Structure (Material No.06LDG2) to all mating surfaces. Do not apply it to the bonding straps.
(2) If removed, install the tie-rods (5), (10) and (11).
(a) Install the tie-rods (5), (10) and (11) at the brackets.
(b) Install the bolts (15), the washers (16) and the castle nuts (17).
(c) Tighten and TORQUE the castle nuts (17) to between to between 0.75 and 0.55 m.daN (66.37 and 48.67 lbf.in ) and safety them with the new AIPC 49-12-04-02-110 COTTER PIN (18) or AIPC 49-12-84-41-070 COTTER PIN (18).
(d) Connect the bonding strap (20) at bonding bracket (Ref. AMM TASK 20-28-00-912-802).
(e) Install the clamps (27) and (28) at the tie-rod (11) with the screws (26), the washers (25) and the nuts (23).
(f) Install the screws (22), the washers (21) and the nuts (19).
(g) Tighten and TORQUE the nuts (19) to between to between 0.26 and 0.22 m.daN (23.01 and 19.47 lbf.in ).
(3) Install the vibration isolator 4035KM (12) on the APU mount-bracket (14).
(4) Install the tie-rods (5), (10) and (11) at the vibration isolator (12).
(5) Install the bolts (4), and (9), the washers (3) and (8) and the castle nuts (2), and (6).
(6) Tighten and TORQUE the castle nuts (6) to between 0.35 and 0.3 m.daN (30.97 and 26.55 lbf.in ) and safety them with the AIPC 49-12-04-02-120 COTTER PINS (7) or AIPC 49-12-84-41-080 COTTER PINS (7).
(7) Tighten and TORQUE the castle nuts (2) to between 0.75 and 0.55 m.daN (66.37 and 48.67 lbf.in ) and safety them with the new AIPC 49-12-04-02-110 COTTER PINS (1) or AIPC 49-12-84-41-070 COTTER PIN (1).
(8) Remove the 98A49107504001 PROTECTOR-THREADS,APU MOUNTING BOLTS and install the nut (13).
(9) Tighten and TORQUE the nut (13) to between 3.1 and 2.5 m.daN (22.86 and 18.44 lbf.ft )
(10) Put a mark on the nut (13) with red locking varnish to identify the torqued position.
Subtask 49-12-51-080-051-A ** ON A/C NOT FOR ALL Subtask 49-12-51-420-052-A ** ON A/C NOT FOR ALL CAUTION:
WHEN YOU REMOVE (INSTALL) THE APU, DISENGAGE (ENGAGE) ALL THE VIBRATION ISOLATORS AT THE SAME TIME FROM THE APU MOUNT BRACKETS. IF YOU DISENGAGE (ENGAGE) THEM ONE AFTER THE OTHER, THE LOADS WILL NOT BE EQUAL. THIS WILL CAUSE DAMAGE TO THE TIE RODS.
(1) Protective Treatment (a) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) or Non Hardening Jointing Putty-High Temp. Area - Structure (Material No.06LDG2) to all mating surfaces. Do not apply it to the bonding straps.
(2) If removed, install the tie-rods (5), (10) and (11).
(a) Install the tie-rods (5), (10) and (11) at the brackets.
(b) Install the bolts (15), the washers (16) and the castle nuts (17).
(c) Tighten and TORQUE the castle nuts (17) to between to between 0.75 and 0.55 m.daN (66.37 and 48.67 lbf.in )
and safety them with the new AIPC 49-12-04-02-110 COTTER PIN (18) or AIPC 49-12-84-41-070 COTTER PIN (18). (d) Connect the bonding strap (20) at bonding bracket (Ref. AMM TASK 20-28-00-912-802).
(e) Install the clamps (27) and (28) at the tie-rod (11) with the screws (26), the washers (25) and the nuts (23).
(f) Install the screws (22), the washers (21) and the nuts (19).
(g) Tighten and TORQUE the nuts (19) to between to between 0.26 and 0.22 m.daN (23.01 and 19.47 lbf.in )
. (3) Install the vibration isolator 4035KM (12) on the APU mount-bracket (14).
(4) Install the tie-rods (5), (10) and (11) at the vibration isolator (12).
(5) Install the bolts (4), and (9), the washers (3) and (8) and the castle nuts (2), and (6).
(6) Tighten and TORQUE the castle nuts (6) to between 0.35 and 0.3 m.daN (30.97 and 26.55 lbf.in )
and safety them with the AIPC 49-12-04-02-120 COTTER PINS (7) or AIPC 49-12-84-41-080 COTTER PINS (7). (7) Tighten and TORQUE the castle nuts (2) to between 0.75 and 0.55 m.daN (66.37 and 48.67 lbf.in )
and safety them with the new AIPC 49-12-04-02-110 COTTER PINS (1) or AIPC 49-12-84-41-070 COTTER PIN (1). (8) Remove the 98A49107504001 PROTECTOR-THREADS,APU MOUNTING BOLTS and install the nut (13).
(9) Tighten and TORQUE the nut (13) to between 3.1 and 2.5 m.daN (22.86 and 18.44 lbf.ft )
(10) Put a mark on the nut (13) with red locking varnish to identify the torqued position.
D. Apply a thin layer of Corrosion Preventive Compound-Water Displacing Oily Film System (Material No.12ABE2) to the vibration isolator (12), the tie-rod, the suspension structural brackets and the APU mount-bracket.
5. Close-upSubtask 49-12-51-410-051-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Set the light switch 11LJ to off.
(3) Close the APU access doors 316AR 315AL (Ref. AMM TASK 52-41-00-410-001) .
(4) Remove the access platform(s).
Subtask 49-12-51-865-055-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Set the light switch 11LJ to off.
(3) Close the APU access doors 316AR 315AL (Ref. AMM TASK 52-41-00-410-001) .
(4) Remove the access platform(s).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 49-12-51-860-053-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/ECB/SPLY | 1KD | L41 |
C. Aircraft Maintenance Configuration.
(1) De-energize the ground service network (Ref. AMM TASK 24-41-00-862-002)
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) De-energize the ground service network (Ref. AMM TASK 24-41-00-862-002)
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.