DOC AIRBUS | AMM A320FRemoval of the Oil Filter Differential Pressure Switch [CFMB]
TASK 79-35-15-000-003-A
Removal of the Oil Filter Differential Pressure Switch
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 79-35-15-941-050-A ** ON A/C NOT FOR ALL
Subtask 79-35-15-020-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:39:53 UTC
Removal of the Oil Filter Differential Pressure Switch
FIN: 4001EN ** 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 | CONTAINER 5 L (1.32 USGAL) |
| No specific | AR | PLIERS - CONNECTOR, JAW, SOFT |
| 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 |
Oil Filter Differential-Pressure-SwitchSubtask 79-35-15-941-050-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 79-35-15-010-050-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 79-35-15-020-050-A ** ON A/C NOT FOR ALL
A. Removal of the Differential Pressure Switch
(1) Disconnect the HJ7 harness connector (10) from the differential pressure switch (20). Use PLIERS - CONNECTOR, JAW, SOFT only if necessary.
(2) Remove the bolts (50) which attach the differential pressure switch (20) to the lubrication unit.
(3) Put a CONTAINER 5 L (1.32 USGAL) below the differential pressure switch.
(4) Remove the differential pressure switch (20) from the lubrication unit.
(5) Remove and discard the O-rings (30) and (40).
(6) Put CAP - BLANKING on the disconnected parts and orifice.
(1) Disconnect the HJ7 harness connector (10) from the differential pressure switch (20). Use PLIERS - CONNECTOR, JAW, SOFT only if necessary.
(2) Remove the bolts (50) which attach the differential pressure switch (20) to the lubrication unit.
(3) Put a CONTAINER 5 L (1.32 USGAL) below the differential pressure switch.
(4) Remove the differential pressure switch (20) from the lubrication unit.
(5) Remove and discard the O-rings (30) and (40).
(6) Put CAP - BLANKING on the disconnected parts and orifice.