DOC AIRBUS | AMM A320FInstallation of the Fan Cowl Oil Tank Access Door Latch [PW11]
TASK 71-13-12-400-805-A
Installation of the Fan Cowl Oil Tank Access Door Latch
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 71-13-12-941-062-A ** ON A/C NOT FOR ALL
Subtask 71-13-12-942-054-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:32:41 UTC
Installation of the Fan Cowl Oil Tank Access Door Latch
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING:
WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 400
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.PU1-0001) | lint-free cotton cloth |
| (Material No.PU2-0001) | alcohol, isopropyl |
| (Material No.PU3-0004) | sealant |
| (Material No.PU3-0006) | adhesive, epoxy paste |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 437AL, 438AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 70-30-00-918-803-A | Consumable Materials Index for the Nacelle (UTC Aerospace Systems) |
| TASK 71-00-00-860-833-A | Procedure to Prevent Engine Motoring |
| TASK 71-13-00-010-802-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-802-A | Closing of the Fan Cowl Doors |
| TASK 71-13-61-400-801-A | Installation of the Fan Cowl Latch Proximity Sensor Harness |
| TASK 71-13-61-400-802-A | Installation of the Pylon Fan Cowl Latch Proximity Sensor Harness |
Oil Tank Access Door LatchSubtask 71-13-12-941-062-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring (Ref. AMM TASK 71-00-00-860-833).
Subtask 71-13-12-010-066-A ** ON A/C NOT FOR ALL (1) Make sure that you did the procedure to prevent engine motoring (Ref. AMM TASK 71-00-00-860-833).
B. Get Access
(1) If necessary, open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802).
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
(3) Make sure that the oil tank access door is opened.
4. Procedure(1) If necessary, open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802).
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
NOTE: You can usually install the oil tank access door latches (2) without the left fan cowl doors open.
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position. (3) Make sure that the oil tank access door is opened.
CAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 71-13-12-420-063-A ** ON A/C NOT FOR ALL A. Installation of the Oil Tank Access Door Latches
(1) Removal of the protection covers
PRE SB GRAA320NEO-A-71-13-0009-00001-930A-D
(2) Install the two oil tank access door latches (2) on the oil tank access door with the eight bolts (1), eight washers (3) and eight nuts (4).
(a) Tighten the eight nuts (4) with your hand. Do not torque the nuts (4) at this time.
END OF PRE SB GRAA320NEO-A-71-13-0009-00001-930A-D
POST SB GRAA320NEO-A-71-13-0009-00001-930A-D
(3) Install the two oil tank access door latches (12) on the oil tank access door with the eight pins (11) and eight nuts (13).
(a) Tighten the eight nuts (13) with your hand. Do not torque the nuts (13) at this time.
END OF POST SB GRAA320NEO-A-71-13-0009-00001-930A-D
(4) Measure the distance between the surface of the oil tank access door and the surface of the buttons on the oil tank access door latches.
(5) Make sure that the two surfaces are flush within 0.025 in. (0.63 mm) of each other.
(6) Remove the two oil tank access door latches and the attaching fasteners.
(7) If the distance between the surfaces that you measured at step 4.A.(4) is more than 0.025 in. (0.63 mm), install a shim on the oil tank access door latches as follows:
(a) Remove the shim material from the faying surface of the oil tank access door with a SCRAPER - NON METALLIC, if necessary.
(b) If you need to add 0.03 in. (0.76 mm) or less, usePU3-0006 adhesive, epoxy paste
1 Apply a layer of thePU3-0006 adhesive, epoxy paste
(c) If you need to add more than 0.03 in. (0.76 mm) but less than 0.09 in. (2.29 mm), use a laminated shim andPU3-0006 adhesive, epoxy paste
2 Put a layer ofPU3-0006 adhesive, epoxy paste
(d) Put the oil tank access door latch with the shim on the oil tank access door. Push on the oil tank access door latch until there is no air in the layer ofPU3-0006 adhesive, epoxy paste
PRE SB GRAA320NEO-A-71-13-0009-00001-930A-D
(e) Install the oil tank access door latch (2) and the shim, if necessary, on the oil tank access door with the eight bolts (1), eight washers (3) and eight nuts (4). Do not torque the nuts (4) at this time.
END OF PRE SB GRAA320NEO-A-71-13-0009-00001-930A-D
POST SB GRAA320NEO-A-71-13-0009-00001-930A-D
(f) Install the two oil tank access door latches (12) and the shim, if necessary, on the oil tank access door with the eight pins (11) and eight nuts (13). Do not torque the nuts (13) at this time.
END OF POST SB GRAA320NEO-A-71-13-0009-00001-930A-D
(g) IfPU3-0006 adhesive, epoxy paste PU2-0001 alcohol, isopropyl
(h) Let thePU3-0006 adhesive, epoxy paste
(i) Remove the fasteners and wet install them with sealant (Material No.PU3-0004) or equivalent (Ref. AMM TASK 70-30-00-918-803).
PRE SB GRAA320NEO-A-71-13-0009-00001-930A-D
(8) Tightening of the nuts
.
END OF PRE SB GRAA320NEO-A-71-13-0009-00001-930A-D
POST SB GRAA320NEO-A-71-13-0009-00001-930A-D
(9) Tightening of the nuts
.
END OF POST SB GRAA320NEO-A-71-13-0009-00001-930A-D
(10) Measure and adjust the force required to close the oil tank access door latches (2). Refer to (Ref. AMM TASK 71-13-61-400-802) or (Ref. AMM TASK 71-13-61-400-801).
5. Close-up(1) Removal of the protection covers
CAUTION:
REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.
(a) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine. PRE SB GRAA320NEO-A-71-13-0009-00001-930A-D
(2) Install the two oil tank access door latches (2) on the oil tank access door with the eight bolts (1), eight washers (3) and eight nuts (4).
(a) Tighten the eight nuts (4) with your hand. Do not torque the nuts (4) at this time.
END OF PRE SB GRAA320NEO-A-71-13-0009-00001-930A-D
POST SB GRAA320NEO-A-71-13-0009-00001-930A-D
(3) Install the two oil tank access door latches (12) on the oil tank access door with the eight pins (11) and eight nuts (13).
(a) Tighten the eight nuts (13) with your hand. Do not torque the nuts (13) at this time.
END OF POST SB GRAA320NEO-A-71-13-0009-00001-930A-D
(4) Measure the distance between the surface of the oil tank access door and the surface of the buttons on the oil tank access door latches.
(5) Make sure that the two surfaces are flush within 0.025 in. (0.63 mm) of each other.
(6) Remove the two oil tank access door latches and the attaching fasteners.
(7) If the distance between the surfaces that you measured at step 4.A.(4) is more than 0.025 in. (0.63 mm), install a shim on the oil tank access door latches as follows:
(a) Remove the shim material from the faying surface of the oil tank access door with a SCRAPER - NON METALLIC, if necessary.
(b) If you need to add 0.03 in. (0.76 mm) or less, use
1 Apply a layer of the
(c) If you need to add more than 0.03 in. (0.76 mm) but less than 0.09 in. (2.29 mm), use a laminated shim and
NOTE: If you need to add more than 0.09 in. (2.29 mm) of shim, contact United Technologies Aerospace Systems (UTAS) for instructions.
1 Make a laminated shim fit the faying surface under the oil tank access door latch. Adjust the thickness of the shim to approximately the distance that you measured at step 4.A.(4). 2 Put a layer of
(d) Put the oil tank access door latch with the shim on the oil tank access door. Push on the oil tank access door latch until there is no air in the layer of
PRE SB GRAA320NEO-A-71-13-0009-00001-930A-D
(e) Install the oil tank access door latch (2) and the shim, if necessary, on the oil tank access door with the eight bolts (1), eight washers (3) and eight nuts (4). Do not torque the nuts (4) at this time.
END OF PRE SB GRAA320NEO-A-71-13-0009-00001-930A-D
POST SB GRAA320NEO-A-71-13-0009-00001-930A-D
(f) Install the two oil tank access door latches (12) and the shim, if necessary, on the oil tank access door with the eight pins (11) and eight nuts (13). Do not torque the nuts (13) at this time.
END OF POST SB GRAA320NEO-A-71-13-0009-00001-930A-D
(g) If
(h) Let the
(i) Remove the fasteners and wet install them with sealant (Material No.PU3-0004) or equivalent (Ref. AMM TASK 70-30-00-918-803).
PRE SB GRAA320NEO-A-71-13-0009-00001-930A-D
(8) Tightening of the nuts
CAUTION:
DO NOT TIGHTEN THE NUTS MORE THAN THE MAXIMUM TORQUE OF 8 LBF-IN (0.090 M.daN). IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO EQUIPMENT CAN OCCUR.
(a) TORQUE the nuts (4) to between 8 and 6 lbf.in (0.09 and 0.07 m.daN ) . END OF PRE SB GRAA320NEO-A-71-13-0009-00001-930A-D
POST SB GRAA320NEO-A-71-13-0009-00001-930A-D
(9) Tightening of the nuts
CAUTION:
DO NOT TIGHTEN THE NUTS MORE THAN THE MAXIMUM TORQUE OF 20 LBF-IN (0.225 M.daN). IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO EQUIPMENT CAN OCCUR.
(a) TORQUE the nuts (13) to between 20 and 17 lbf.in (0.23 and 0.19 m.daN ) . END OF POST SB GRAA320NEO-A-71-13-0009-00001-930A-D
(10) Measure and adjust the force required to close the oil tank access door latches (2). Refer to (Ref. AMM TASK 71-13-61-400-802) or (Ref. AMM TASK 71-13-61-400-801).
Subtask 71-13-12-942-054-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) Close the oil tank access door.
(3) Remove the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE.
(4) If necessary, close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802).
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
(5) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the oil tank access door.
(3) Remove the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE.
(4) If necessary, close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802).
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
(5) Remove the WARNING NOTICE(S).