DOC AIRBUS | AMM A320FInstallation of the P3B Line [CFML]
TASK 73-21-70-400-803-A
Installation of the P3B Line
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 73-21-70-941-055-A
Subtask 73-21-70-420-054-A
Subtask 73-21-70-410-056-A
[Rev.10 from 2021]
2026.04.01 13:03:44 UTC
Installation of the P3B Line
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
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2442) | engine oil |
| (Material No.CP8006) | safety cable 0.032 in. (0.8 mm) dia. |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 436 | FAN AND ACCESSORY GEARBOX |
| 446 | FAN AND ACCESSORY GEARBOX |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1) | |
| 437AL, 438AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| 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 |
P3B LineSubtask 73-21-70-941-055-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) are 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 73-21-70-010-061-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) are in position to tell persons not to operate:
- The ENG/MODE selector switch
- 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 73-21-70-420-054-A
A. Installation of the P3B Line
(1) Remove the COVER - PROTECTION and the CAP - PROTECTION from all the openings, tubes, hoses and connectors.
(2) Lubrication of the coupling nut threads
(3) Install the six clamps (5), (8), (11), (13), (15) and (17) on the P3B line (1).
(4) Install the P3B line (1) in the correct position.
(5) Install the bolt (4) and the nut (3) on the clamp (5) and tighten them with your hand.
(6) Install the bolt (7) and the nut (6) on the clamp (8) and tighten them with your hand.
(7) Install the bolt (10) and the nut (9) on the clamp (11) and tighten them with your hand.
(8) Install the bolt (12) on the clamp (13) and tighten it with your hand.
(9) Install the bolt (14) on the clamp (15) and tighten it with your hand.
(10) Install the bolt (16) on the clamp (17) and tighten it with your hand.
(11) Connect the coupling nut (2) of the P3B line (1) to the pressure sub-system box-nipple (19) and tighten it with your hand.
(12) Connect the coupling nut (2) of the PS3 line (1) to the air duct (18) and tighten it with your hand.
(13) Tightening of the coupling nuts
.
(14) Safety the coupling nuts (2).
CP8006 safety cable 0.032 in. (0.8 mm) dia.
(b) Attach the second coupling nut (2) to the air duct (18) with theCP8006 safety cable 0.032 in. (0.8 mm) dia.
(15) TORQUE the three bolts (12), (14) and (16) to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN ).
(16) TORQUE the three nuts (3), (6) and (9) to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN ).
5. Close-up(1) Remove the COVER - PROTECTION and the CAP - PROTECTION from all the openings, tubes, hoses and connectors.
(2) Lubrication of the coupling nut threads
WARNING:
USE PERSONAL PROTECTION EQUIPMENT. USE THE ENGINE OIL IN A WELL-VENTILATED AREA. ENGINE OIL IS TOXIC.
(a) Lubricate the threads of the two coupling nuts (2) of the P3B line (1) with engine oil (Material No.CP2442) . (3) Install the six clamps (5), (8), (11), (13), (15) and (17) on the P3B line (1).
(4) Install the P3B line (1) in the correct position.
(5) Install the bolt (4) and the nut (3) on the clamp (5) and tighten them with your hand.
(6) Install the bolt (7) and the nut (6) on the clamp (8) and tighten them with your hand.
(7) Install the bolt (10) and the nut (9) on the clamp (11) and tighten them with your hand.
(8) Install the bolt (12) on the clamp (13) and tighten it with your hand.
(9) Install the bolt (14) on the clamp (15) and tighten it with your hand.
(10) Install the bolt (16) on the clamp (17) and tighten it with your hand.
(11) Connect the coupling nut (2) of the P3B line (1) to the pressure sub-system box-nipple (19) and tighten it with your hand.
(12) Connect the coupling nut (2) of the PS3 line (1) to the air duct (18) and tighten it with your hand.
(13) Tightening of the coupling nuts
CAUTION:
USE TWO WRENCHES TO LOOSEN OR TIGHTEN THE COUPLING NUT. USE ONE WRENCH TO HOLD THE FITTING AND THE OTHER TO LOOSEN OR TIGHTEN THE COUPLING NUT. IF YOU DO NOT USE TWO WRENCHES, DAMAGE TO THE EQUIPMENT CAN OCCUR.
(a) TORQUE the two coupling nuts (2) to between 300 and 270 lbf.in (3.39 and 3.05 m.daN ) . (14) Safety the coupling nuts (2).
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(a) Attach the first coupling nut (2) to the pressure sub-system box (19) with the (b) Attach the second coupling nut (2) to the air duct (18) with the
(15) TORQUE the three bolts (12), (14) and (16) to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN )
. (16) TORQUE the three nuts (3), (6) and (9) to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN )
. Subtask 73-21-70-410-056-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).