DOC AIRBUS | AMM A320FInstallation of the Low Pressure Compressor (LPC) Stage 1 Inlet Guide Vane (IGV) [CFML]
TASK 72-21-21-400-801-A
Installation of the Low Pressure Compressor (LPC) Stage 1 Inlet Guide Vane (IGV)
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 72-21-21-941-051-A
Subtask 72-21-21-420-050-A
Subtask 72-21-21-410-050-A
[Rev.10 from 2021]
2026.04.01 02:51:48 UTC
Installation of the Low Pressure Compressor (LPC) Stage 1 Inlet Guide Vane (IGV)
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 | 1 | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 51.11 and 46.25 lbf.in (0.58 and 0.52 m.daN )  |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2101) | graphite grease |
| (Material No.CP2442) | engine oil |
| 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 | |
| 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 |
| TASK 72-21-02-400-802-A | Installation of the Flow Splitter |
LPC Stage 1 IGVSubtask 72-21-21-941-051-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 72-21-21-010-051-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,
- 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
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
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
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
Subtask 72-21-21-420-050-A
A. Installation of the LPC Stage 1 IGV
(1) Make sure that the mating surfaces are clean and clear of unwanted materials.
(2) Install the LPC stage 1 IGV (1) in the correct position on the stage 2 booster vane assembly (3).
(3) Align the holes of the LPC stage 1 IGV (1) and the stage 2 booster vane assembly (3).
(4) Install the 10 slave bolts (4) equally distributed in the holes of the LPC stage 1 IGV (1) on the stage 2 booster vane assembly (3).
(5) Lubricate the nuts:
(6) Install the 10 slave nuts (5) to attach the LPC stage 1 IGV (1) on the stage 2 booster vane assembly (3).
(7) Tighten the 10 slave nuts (5) until the flanges of the LPC stage 1 IGV (1) and the stage 2 booster vane assembly (3) are in contact.
(8) Make sure that the flanges of the LPC stage 1 IGV (1) and the stage 2 booster vane assembly (3) are not bent.
(9) Lubricate the threads of the three bolts (4) with the graphite grease (Material No.CP2101) .
(10) Install the three bolts (4) and the three nuts (5) to attach the LPC stage 1 IGV (1) on the stage 2 booster vane assembly (3) and tighten by hand.
(11) Torque the three bolts (4) to between 51.11 and 46.25 lbf.in (0.58 and 0.52 m.daN ).
(12) Loosen the 10 slave nuts (5) and remove the 10 slave bolts (4).
(13) Install the flow splitter (2) (Ref. AMM TASK 72-21-02-400-802).
POST SB 72-0080
(14) Install the ring rotating spacer (Ref. AMM D/O 72-21-25-40).
END OF POST SB 72-0080
5. Close-up(1) Make sure that the mating surfaces are clean and clear of unwanted materials.
(2) Install the LPC stage 1 IGV (1) in the correct position on the stage 2 booster vane assembly (3).
(3) Align the holes of the LPC stage 1 IGV (1) and the stage 2 booster vane assembly (3).
(4) Install the 10 slave bolts (4) equally distributed in the holes of the LPC stage 1 IGV (1) on the stage 2 booster vane assembly (3).
(5) Lubricate the nuts:
WARNING:
USE PERSONAL PROTECTION EQUIPMENT. USE THE ENGINE OIL IN A WELL-VENTILATED AREA. ENGINE OIL IS TOXIC.
(a) Lubricate 10 slave nuts (5) with the engine oil (Material No.CP2442) . (6) Install the 10 slave nuts (5) to attach the LPC stage 1 IGV (1) on the stage 2 booster vane assembly (3).
(7) Tighten the 10 slave nuts (5) until the flanges of the LPC stage 1 IGV (1) and the stage 2 booster vane assembly (3) are in contact.
(8) Make sure that the flanges of the LPC stage 1 IGV (1) and the stage 2 booster vane assembly (3) are not bent.
(9) Lubricate the threads of the three bolts (4) with the graphite grease (Material No.CP2101) .
(10) Install the three bolts (4) and the three nuts (5) to attach the LPC stage 1 IGV (1) on the stage 2 booster vane assembly (3) and tighten by hand.
(11) Torque the three bolts (4) to between 51.11 and 46.25 lbf.in (0.58 and 0.52 m.daN )
. (12) Loosen the 10 slave nuts (5) and remove the 10 slave bolts (4).
(13) Install the flow splitter (2) (Ref. AMM TASK 72-21-02-400-802).
POST SB 72-0080
(14) Install the ring rotating spacer (Ref. AMM D/O 72-21-25-40).
END OF POST SB 72-0080
Subtask 72-21-21-410-050-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 access platform(s).
(4) 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 access platform(s).
(4) Remove the WARNING NOTICE(S).