DOC AIRBUS | AMM A320FInstallation of the Anti Leak Valve [CFML]
TASK 79-21-05-400-805-A
Installation of the Anti Leak Valve
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 79-21-05-941-065-A
Subtask 79-21-05-420-057-A
Subtask 79-21-05-410-057-A
[Rev.10 from 2021]
2026.04.01 03:42:59 UTC
Installation of the Anti Leak Valve
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
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 | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 120.7 and 109.3 lbf.in (1.36 and 1.24 m.daN )  |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2442) | engine oil |
| (Material No.CP5070) | vaseline |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1) | |
| 437AL, 438AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2) | |
| 447AL, 448AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 4 | GASKET | EIPC 79-21-05-01-180 |
| 5 | RETAINING RING | EIPC 79-21-05-10-100 |
| 7 | O-RING | EIPC 79-21-05-10-120 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-13-79-610-805-A | Check of the Oil Level and Replenishing |
| TASK 71-00-00-710-815-A | Idle Leak Check |
| TASK 71-13-00-010-803-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-803-A | Closing of the Fan Cowl Doors |
Anti Leak ValveSubtask 79-21-05-941-065-A
A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
Subtask 79-21-05-010-063-A (1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate:
- The ENG/MODE selector switch and
- The ENG/MASTER 1(2) control switch.
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR.
4. Procedure(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR.
Subtask 79-21-05-420-057-A
A. Installation of the Anti Leak Valve
(2) Make sure that the mating surfaces are clean and clear of unwanted materials.
(3) Lubricate the threads of the bolts (3) with the engine oil (Material No.CP2442) .
(4) Lubricate the new EIPC 79-21-05-10-120 O-RING (7) with vaseline (Material No.CP5070) .
(5) Install the new O-ring (7) in the grooves of the anti leak valve (6).
(6) Install the anti leak valve (6) in the lubrication unit (2).
(7) Install a new EIPC 79-21-05-10-100 RETAINING RING (5) in the groove of the lubrication unit (2) to secure the anti leak valve (6).
(8) Install a new EIPC 79-21-05-01-180 GASKET (4) and the oil tube (1) on the lubrication unit (2).
(9) Install the bolts (3), tighten by hand.
(10) TORQUE the bolts (3) to between 120.7 and 109.3 lbf.in (1.36 and 1.24 m.daN ).
(11) Fill the oil tank (Ref. AMM TASK 12-13-79-610-805).
Subtask 79-21-05-790-050-A 5. Close-upWARNING:
BEFORE YOU START THE PROCEDURE, PUT A WIDE DRIP PAN ON THE GROUND TO COLLECT THE OIL THAT CAN FLOW DURING THE OPERATION. OIL ON THE FLOOR CAN CAUSE YOU TO SLIP AND FALL.
WARNING:
USE PERSONAL PROTECTION EQUIPMENT. USE THE ENGINE OIL IN A WELL-VENTILATED AREA. ENGINE OIL IS TOXIC.
(1) Remove all the CAP - PROTECTION and COVER - PROTECTION from the openings, tubes and hoses.(2) Make sure that the mating surfaces are clean and clear of unwanted materials.
(3) Lubricate the threads of the bolts (3) with the engine oil (Material No.CP2442) .
(4) Lubricate the new EIPC 79-21-05-10-120 O-RING (7) with vaseline (Material No.CP5070) .
(5) Install the new O-ring (7) in the grooves of the anti leak valve (6).
(6) Install the anti leak valve (6) in the lubrication unit (2).
(7) Install a new EIPC 79-21-05-10-100 RETAINING RING (5) in the groove of the lubrication unit (2) to secure the anti leak valve (6).
(8) Install a new EIPC 79-21-05-01-180 GASKET (4) and the oil tube (1) on the lubrication unit (2).
(9) Install the bolts (3), tighten by hand.
(10) TORQUE the bolts (3) to between 120.7 and 109.3 lbf.in (1.36 and 1.24 m.daN )
.(11) Fill the oil tank (Ref. AMM TASK 12-13-79-610-805).
Subtask 79-21-05-410-057-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR.
(3) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR.
(3) Remove the WARNING NOTICE(S).