DOC AIRBUS | AMM A320FGeneral Cleaning of the APU after Oil Smell In Cabin (131-9(A))
TASK 49-00-00-100-806-A
General Cleaning of the APU after Oil Smell In Cabin (131-9(A))
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 49-00-00-860-222-A ** ON A/C NOT FOR ALL
Subtask 49-00-00-100-051-A ** ON A/C NOT FOR ALL
Subtask 49-00-00-410-106-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 01:26:20 UTC
General Cleaning of the APU after Oil Smell In Cabin (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
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 315AL, 316AR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 23-44-00-860-001-A | Operation of the Service Interphone System |
| 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 49-00-00-100-003-A | Cleaning of the APU Compartment with installed APU (131-9(A)) |
| TASK 49-00-00-100-807-A | Cleaning of the APU Engine and the APU Access Doors (131-9(A)) |
| TASK 49-16-00-100-005-A | Cleaning of the APU Air Intake (131-9(A)) |
| TASK 49-16-00-210-802-A | General Visual Inspection of APU Air Inlet Plenum and APU Air Intake (131-9(A)) |
| TASK 49-20-00-100-004-A | APU Load Compressor Cleaning because of fluid ingestion (131-9(A)) |
| 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 |
Subtask 49-00-00-860-222-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) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).
(3) Connect the service interphone to the aircraft (Ref. AMM TASK 23-44-00-860-001).
Subtask 49-00-00-865-216-A ** ON A/C NOT FOR ALL (1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).
(3) Connect the service interphone to the aircraft (Ref. AMM TASK 23-44-00-860-001).
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 49-00-00-010-112-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | APU/FIRE AND OVHT/DET/LOOP B | 2WG | L44 |
| 121VU | APU/FIRE AND OVHT/DET/LOOP A | 1WG | L43 |
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/ECB/SPLY | 1KD | L41 |
| 121VU | APU/FIRE/EXTIG/SQUIB/B | 2WF | L39 |
| 121VU | APU/FIRE/EXTIG/SQUIB/A | 1WF | L38 |
| 121VU | APU/FIRE/LP VALVE/NORM | 4WF | M42 |
| 121VU | APU/FIRE/LP VALVE/STBY | 3WF | M41 |
C. Get Access
(1) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE below the APU access doors 315AL and 316AR.
(2) Open the APU access doors 315AL and 316AR (Ref. AMM TASK 52-41-00-010-001).
(3) Set the light switch 11LJ to the ON position.
4. Procedure(1) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE below the APU access doors 315AL and 316AR.
(2) Open the APU access doors 315AL and 316AR (Ref. AMM TASK 52-41-00-010-001).
(3) Set the light switch 11LJ to the ON position.
Subtask 49-00-00-100-051-A ** ON A/C NOT FOR ALL
A. General Cleaning of the APU
(2) If the APU air intake and/or the air intake diffuser and elbow and/or doors are dirty, clean them (Ref. AMM TASK 49-16-00-100-005).
(3) If the APU inlet plenum is dirty, clean it (Ref. AMM TASK 49-16-00-210-802).
(4) If there are signs of oil ingestion by the APU and/or an internal leakage, clean the APU load compressor (Ref. AMM TASK 49-20-00-100-004).
(5) If the external surface of the APU is dirty, clean it (Ref. AMM TASK 49-00-00-100-807).
5. Close-upNOTE: Dirty is debris, dust, sand, oil, combustible residues, grease, fungus growth and/or other contaminations.
(1) If the APU compartment is dirty, clean it (Ref. AMM TASK 49-00-00-100-003). (2) If the APU air intake and/or the air intake diffuser and elbow and/or doors are dirty, clean them (Ref. AMM TASK 49-16-00-100-005).
(3) If the APU inlet plenum is dirty, clean it (Ref. AMM TASK 49-16-00-210-802).
(4) If there are signs of oil ingestion by the APU and/or an internal leakage, clean the APU load compressor (Ref. AMM TASK 49-20-00-100-004).
(5) If the external surface of the APU is dirty, clean it (Ref. AMM TASK 49-00-00-100-807).
Subtask 49-00-00-410-106-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 the OFF position.
(3) Close the APU access doors 315AL and 316AR (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).
Subtask 49-00-00-865-217-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 the OFF position.
(3) Close the APU access doors 315AL and 316AR (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 49-00-00-860-223-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | APU/FIRE AND OVHT/DET/LOOP B | 2WG | L44 |
| 121VU | APU/FIRE AND OVHT/DET/LOOP A | 1WG | L43 |
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/ECB/SPLY | 1KD | L41 |
| 121VU | APU/FIRE/EXTIG/SQUIB/B | 2WF | L39 |
| 121VU | APU/FIRE/EXTIG/SQUIB/A | 1WF | L38 |
| 121VU | APU/FIRE/LP VALVE/NORM | 4WF | M42 |
| 121VU | APU/FIRE/LP VALVE/STBY | 3WF | M41 |
C. 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).