DOC AIRBUS | AMM A320FRemoval of the N2 Speed Sensor . [CFMB]
TASK 77-11-20-000-002-A
Removal of the N2 Speed Sensor .
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 77-11-20-941-051-A ** ON A/C NOT FOR ALL
Subtask 77-11-20-020-051-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 13:00:24 UTC
Removal of the N2 Speed Sensor .
FIN: 4001EV ** 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 | AR | CAP - BLANKING |
| No specific | AR | PLIERS - CONNECTOR, JAW, SOFT |
| No specific | AR | PLUG - BLANKING |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
N2 Speed SensorSubtask 77-11-20-941-051-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 77-11-20-010-051-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. Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
4. Procedure(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 77-11-20-020-051-A ** ON A/C NOT FOR ALL
A. Removal of the N2 Speed Sensor:
(1) Put a container below the N2 speed sensor.
(2) Disconnect the electrical cables from the N2 speed sensor. Use PLIERS - CONNECTOR, JAW, SOFT only if necessary.
(3) Put CAP - BLANKING on the cable connectors and on the sensor receptacles.
(4) Remove the two bolts (10) which attach the sensor to the pad of the accessory gearbox (AGB).
(5) Remove the N2 speed sensor from its recess.
(6) Remove the O-ring (20) from the sensor housing. Discard the O-ring (20).
(7) Put a CAP - BLANKING on the sensor probe.
(8) Put a PLUG - BLANKING in the AGB pad recess.
(1) Put a container below the N2 speed sensor.
(2) Disconnect the electrical cables from the N2 speed sensor. Use PLIERS - CONNECTOR, JAW, SOFT only if necessary.
(3) Put CAP - BLANKING on the cable connectors and on the sensor receptacles.
(4) Remove the two bolts (10) which attach the sensor to the pad of the accessory gearbox (AGB).
(5) Remove the N2 speed sensor from its recess.
(6) Remove the O-ring (20) from the sensor housing. Discard the O-ring (20).
(7) Put a CAP - BLANKING on the sensor probe.
(8) Put a PLUG - BLANKING in the AGB pad recess.