DOC AIRBUS | AMM A320FInstallation of the Oil-Cooler Outlet-Duct (131-9(A))
TASK 49-52-41-400-003-A
Installation of the Oil-Cooler Outlet-Duct (131-9(A))
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 49-52-41-860-057-A ** ON A/C NOT FOR ALL
Subtask 49-52-41-210-055-A ** ON A/C NOT FOR ALL
Subtask 49-52-41-410-055-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 01:31:27 UTC
Installation of the Oil-Cooler Outlet-Duct (131-9(A))
WARNING:
DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).
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
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.06LCG9) | Non Hardening Jointing Putty-Medium Temp. Area - - |
| (Material No.06LDG2) | Non Hardening Jointing Putty-High Temp. Area - Structure |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 315AL, 316AR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
| TASK 24-42-00-862-001-A | De-energize the Ground Service Network Supplied from the External Power |
| TASK 29-00-00-864-001-A | Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action |
| TASK 49-00-00-710-010-A | Operational Test of the APU |
| 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 52-41-21-400-001-A | Installation of APU Access Door 315AL |
Oil-Cooler Outlet-DuctSubtask 49-52-41-860-057-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) On the panel 25VU, make sure that the APU MASTER SW p/bsw is OFF.
(3) Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).
(5) Make sure that the access platform is in position below the APU compartment.
(6) Make sure that the APU access doors 315AL and 316AR are open (Ref. AMM TASK 52-41-00-010-001).
(7) Make sure that the LIGHT SW is set to the ON position.
Subtask 49-52-41-865-057-A ** ON A/C NOT FOR ALL (1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) On the panel 25VU, make sure that the APU MASTER SW p/bsw is OFF.
(3) Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).
(5) Make sure that the access platform is in position below the APU compartment.
(6) Make sure that the APU access doors 315AL and 316AR are open (Ref. AMM TASK 52-41-00-010-001).
(7) Make sure that the LIGHT SW is set to the ON position.
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 49-52-41-210-055-A ** ON A/C NOT FOR ALL
A. Make an inspection of the bellows (2), the pipe (4) and the support for damage, chafing marks, dents or cracks. Replace the damaged items.
(1) Make an inspection of the duct seal on the outlet-duct (16) at the APU access door 315AL. Replace the seal, if necessary (Ref. AMM TASK 52-41-21-400-001).
(2) Make an inspection of the stiffeners (10).
(3) If the stiffeners are damaged, do a structural repair.
Subtask 49-52-41-420-054-A ** ON A/C NOT FOR ALL (1) Make an inspection of the duct seal on the outlet-duct (16) at the APU access door 315AL. Replace the seal, if necessary (Ref. AMM TASK 52-41-21-400-001).
(2) Make an inspection of the stiffeners (10).
(3) If the stiffeners are damaged, do a structural repair.
B. Installation of the Oil-Cooler Outlet-Duct
(1) Remove the protective cover from the oil cooler outlet.
(2) Put the pipe (4) on the support and close the clamps (5). Do not fully tighten the clamps (5) at this time.
(3) Put the bellows (2) on to the pipe (4) and install the clamp (3). Do not fully tighten the clamp (3) at this time.
(4) 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 and to the bolt (6), the washers (7) and (8), and the nut (9).
(5) Put the oil-cooler outlet-duct in position and install the screws (6), the washers (7), (8) and the nuts (9). Do not fully tighten the nuts (5) at this time.
(6) Connect the bellows (2) to the oil cooler outlet and install the clamp (1).
(7) TORQUE the clamp (1) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )
.
(8) Close the APU access door 315AL.
(9) TORQUE the nuts (9) to to between 0.495 and 0.405 m.daN (43.81 and 35.84 lbf.in ).
(10) Adjust the pipe (4) to get a precompression of between 1.3 mm (0.0512 in.) and 1.7 mm (0.0669 in.) of the seal between the flanges of the pipe (4) and the outlet-duct (16) at the APU access door 315AL.
(12) Open the APU access door 315AL.
(13) Connect the bonding strap (15) to the structure with the bolt (13), the washers (11), (14) and the nut (12) (Ref. AMM TASK 20-28-00-912-802).
Subtask 49-52-41-420-054-B ** ON A/C NOT FOR ALL (1) Remove the protective cover from the oil cooler outlet.
(2) Put the pipe (4) on the support and close the clamps (5). Do not fully tighten the clamps (5) at this time.
(3) Put the bellows (2) on to the pipe (4) and install the clamp (3). Do not fully tighten the clamp (3) at this time.
(4) 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 and to the bolt (6), the washers (7) and (8), and the nut (9).
(5) Put the oil-cooler outlet-duct in position and install the screws (6), the washers (7), (8) and the nuts (9). Do not fully tighten the nuts (5) at this time.
(6) Connect the bellows (2) to the oil cooler outlet and install the clamp (1).
(7) TORQUE the clamp (1) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )
. (8) Close the APU access door 315AL.
(9) TORQUE the nuts (9) to to between 0.495 and 0.405 m.daN (43.81 and 35.84 lbf.in )
. (10) Adjust the pipe (4) to get a precompression of between 1.3 mm (0.0512 in.) and 1.7 mm (0.0669 in.) of the seal between the flanges of the pipe (4) and the outlet-duct (16) at the APU access door 315AL.
NOTE: The adjustment range C is 10 mm (0.3937 in.).
(11) Tighten the clamps (5) and the clamp (3). (12) Open the APU access door 315AL.
(13) Connect the bonding strap (15) to the structure with the bolt (13), the washers (11), (14) and the nut (12) (Ref. AMM TASK 20-28-00-912-802).
B. Installation of the Oil-Cooler Outlet-Duct
(1) Remove the protective cover from the oil cooler outlet.
(2) Put the pipe (4) on the support and close the clamps (5). Do not fully tighten the clamps (5) at this time.
(3) Put the bellows (2) on to the pipe (4) and install the clamp (3). Do not fully tighten the clamp (3) at this time.
(4) Apply Non Hardening Jointing Putty-High Temp. Area - Structure (Material No.06LDG2) to all mating surfaces and to the bolt (6), the washers (7) and (8), and the nut (9).
(5) Put the oil-cooler outlet-duct in position and install the screws (6), the washers (7), (8) and the nuts (9). Do not fully tighten the nuts (5) at this time.
(6) Connect the bellows (2) to the oil cooler outlet and install the clamp (1).
(7) TORQUE the clamp (1) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in ).
(8) Close the APU access door 315AL.
(9) TORQUE the nuts (9) to to between 0.495 and 0.405 m.daN (43.81 and 35.84 lbf.in ).
(10) Adjust the pipe (4) to get a precompression of between 1.3 mm (0.0512 in.) and 1.7 mm (0.0669 in.) of the seal between the flanges of the pipe (4) and the outlet-duct (16) at the APU access door 315AL.
(12) Open the APU access door 315AL.
(13) Connect the bonding strap (15) to the structure with the bolt (13), the washers (11), (14) and the nut (12) (Ref. AMM TASK 20-28-00-912-802).
Subtask 49-52-41-865-058-A ** ON A/C NOT FOR ALL (1) Remove the protective cover from the oil cooler outlet.
(2) Put the pipe (4) on the support and close the clamps (5). Do not fully tighten the clamps (5) at this time.
(3) Put the bellows (2) on to the pipe (4) and install the clamp (3). Do not fully tighten the clamp (3) at this time.
(4) Apply Non Hardening Jointing Putty-High Temp. Area - Structure (Material No.06LDG2) to all mating surfaces and to the bolt (6), the washers (7) and (8), and the nut (9).
(5) Put the oil-cooler outlet-duct in position and install the screws (6), the washers (7), (8) and the nuts (9). Do not fully tighten the nuts (5) at this time.
(6) Connect the bellows (2) to the oil cooler outlet and install the clamp (1).
(7) TORQUE the clamp (1) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )
. (8) Close the APU access door 315AL.
(9) TORQUE the nuts (9) to to between 0.495 and 0.405 m.daN (43.81 and 35.84 lbf.in )
. (10) Adjust the pipe (4) to get a precompression of between 1.3 mm (0.0512 in.) and 1.7 mm (0.0669 in.) of the seal between the flanges of the pipe (4) and the outlet-duct (16) at the APU access door 315AL.
NOTE: The adjustment range C is 10 mm (0.3937 in.).
(11) Tighten the clamps (5) and the clamp (3). (12) Open the APU access door 315AL.
(13) Connect the bonding strap (15) to the structure with the bolt (13), the washers (11), (14) and the nut (12) (Ref. AMM TASK 20-28-00-912-802).
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 49-52-41-710-054-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 |
D. Test
(1) Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-010).
(2) Operate the APU for min. five minutes and examine the joints of the duct for leaks.
5. Close-up(1) Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-010).
(2) Operate the APU for min. five minutes and examine the joints of the duct for leaks.
NOTE: Leaks are not permitted.
Subtask 49-52-41-410-055-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 control SW to the OFF position.
(3) Close the APU access door 315AL (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).
Subtask 49-52-41-860-058-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 control SW to the OFF position.
(3) Close the APU access door 315AL (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).
B. Aircraft Maintenance Configuration
(1) Put the related hydraulic system in the pressurized configuration (Ref. AMM TASK 29-00-00-864-001).
(2) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
(3) Remove the WARNING NOTICE(S).
(1) Put the related hydraulic system in the pressurized configuration (Ref. AMM TASK 29-00-00-864-001).
(2) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
(3) Remove the WARNING NOTICE(S).