DOC AIRBUS | AMM A320FVisual Inspection of the Impeller Rotation [CFMB]
TASK 73-11-10-210-002-A
Visual Inspection of the Impeller Rotation
1. Reason for the Job
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 73-11-10-941-057-A ** ON A/C NOT FOR ALL
Subtask 73-11-10-210-052-A ** ON A/C NOT FOR ALL
Subtask 73-11-10-410-060-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:57:34 UTC
Visual Inspection of the Impeller Rotation
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ADAPTER 0,75 IN (19,05 MM) - SQUARE DRIVE |
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )  |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2442) | engine oil |
| (Material No.CP8001) | lockwire 0.032 in. (0.8 mm) dia. |
| (Material No.CP8002) | lockwire 0.032 in. (0.8 mm) dia |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR, 461AL, 462AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 20 | O-RING | AIPC 73-11-10-01-160 |
| 30 | PACKING | AIPC 73-11-10-01-165 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-00-00-710-006-B | Minimum Idle Check |
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-040-B | Closing of the Fan Cowl Doors |
| TASK 72-63-00-000-002-A | Removal of the Handcranking Drive Cover |
| TASK 72-63-00-400-002-A | Installation of the Handcranking Drive Cover |
| TASK 73-11-10-000-003-A | Removal of the Fuel Pump and Filter Assembly |
| TASK 73-11-10-400-003-A | Installation of the Fuel Pump and Filter Assembly |
| TASK 78-30-00-081-041-B | Make the Thrust Reverser Serviceable after Maintenance |
| TASK 78-30-00-481-041-B | Make the Thrust Reverser Unserviceable for Maintenance |
| TASK 78-36-00-010-040-B | Opening of the Thrust Reverser Doors |
| TASK 78-36-00-410-040-B | Closing of the Thrust Reverser Doors |
Check of Impeller RotationSubtask 73-11-10-941-057-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 73-11-10-010-063-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
B. Get Access
(1) Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 73-11-10-040-052-A ** ON A/C NOT FOR ALL Subtask 73-11-10-010-064-A ** ON A/C NOT FOR ALL (1) Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
D. Open the thrust reverser doors: (Ref. AMM TASK 78-36-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR
4. Procedure(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 73-11-10-210-052-A ** ON A/C NOT FOR ALL
A. Inspection of the Impeller Rotation
(1) Remove the cover from the handcranking drive pad (Ref. AMM TASK 72-63-00-000-002)
(2) Engage a ADAPTER 0,75 IN (19,05 MM) - SQUARE DRIVE, fitted with shear neck, in the handcranking drive shaft.
(3) Remove inspection plug (10) (lube flow screen) from the fuel pump as follows:
(a) Cut and remove lockwire.
(b) Remove plug (10) from pump cover assembly.
(c) Remove and discard preformed packings (20 and 30) from plug (10).
(4) Manually turn the handcranking drive shaft.
(5) Through plug (10) orifice, check that LP pump impeller turns correctly.
(a) If so, reinstall the removed parts.
(b) If not, replace the pump (Ref. AMM TASK 73-11-10-000-003) and (Ref. AMM TASK 73-11-10-400-003).
(6) Install the handcrancking drive pad cover (Ref. AMM TASK 72-63-00-400-002). the cover.
(7) Apply a thin layer of engine oil (Material No.CP2442) to the new AIPC 73-11-10-01-160 O-RING (20) and the new AIPC 73-11-10-01-165 PACKING (30) and install them in the grooves of plug (10).
(a) Install plug (10). TORQUE to between 110 and 90 lbf.in (1.24 and 1.02 m.daN ) and wirelock with CP8001 lockwire 0.032 in. (0.8 mm) dia. CP8002 lockwire 0.032 in. (0.8 mm) dia
Subtask 73-11-10-410-059-A ** ON A/C NOT FOR ALL (1) Remove the cover from the handcranking drive pad (Ref. AMM TASK 72-63-00-000-002)
(2) Engage a ADAPTER 0,75 IN (19,05 MM) - SQUARE DRIVE, fitted with shear neck, in the handcranking drive shaft.
(3) Remove inspection plug (10) (lube flow screen) from the fuel pump as follows:
(a) Cut and remove lockwire.
(b) Remove plug (10) from pump cover assembly.
(c) Remove and discard preformed packings (20 and 30) from plug (10).
(4) Manually turn the handcranking drive shaft.
(5) Through plug (10) orifice, check that LP pump impeller turns correctly.
(a) If so, reinstall the removed parts.
(b) If not, replace the pump (Ref. AMM TASK 73-11-10-000-003) and (Ref. AMM TASK 73-11-10-400-003).
(6) Install the handcrancking drive pad cover (Ref. AMM TASK 72-63-00-400-002). the cover.
(7) Apply a thin layer of engine oil (Material No.CP2442) to the new AIPC 73-11-10-01-160 O-RING (20) and the new AIPC 73-11-10-01-165 PACKING (30) and install them in the grooves of plug (10).
(a) Install plug (10). TORQUE to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )
and wirelock with B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors: (Ref. AMM TASK 78-36-00-410-040).
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(3) Remove the WARNING NOTICE(S).
Subtask 73-11-10-440-052-A ** ON A/C NOT FOR ALL Subtask 73-11-10-710-055-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors: (Ref. AMM TASK 78-36-00-410-040).
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(3) Remove the WARNING NOTICE(S).
D. Do a minimum idle check and check for leaks . No leakage permitted (Ref. AMM TASK 71-00-00-710-006).
5. Close-upSubtask 73-11-10-410-060-A ** ON A/C NOT FOR ALL