DOC AIRBUS | AMM A320FRemoval of the LP Compressor (Fan) Module [IAE]
TASK 72-31-00-000-010-B
Removal of the LP Compressor (Fan) Module
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 72-31-00-941-061-A ** ON A/C NOT FOR ALL
Subtask 72-31-00-020-057-A ** ON A/C NOT FOR ALL Subtask 72-31-00-020-058-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 13:00:54 UTC
Removal of the LP Compressor (Fan) Module
WARNING:
BE CAREFUL DURING THE REMOVAL/INSTALLATION OF THE LP COMPRESSOR (FAN) MODULE. IT WEIGHS APPROXIMATELY 395lb (179kg).
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | AR | WARNING NOTICE(S) |
| IAE1J12016 | 2 | WRENCH-SPECIAL |
| IAE1J12017 | 1 | WRENCH-SPECIAL |
| IAE1J12019 | 1 | STAND - TRANSPORT |
| IAE1J12100 | 1 | SLING-CANTILEVER |
| IAE1J12104 | 1 | ADAPTER-SLING |
| IAE1J12106 | 1 | PIN-ALIGNING |
| IAE1J12110 | 1 | STAND-STORAGE |
| IAE1J12180 | 1 | PROTECTOR-HUB |
| IAE1J12181 | 1 | COVER-PROTECTION |
| IAE1J12182 | 1 | PROTECTOR-RETAINING |
| IAE1J12183 | 1 | COVER-PROTECTION |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-11-11-000-010-B | Removal of the Air Intake Cowl |
| TASK 71-13-00-010-010-A | Opening of the Fan Cowls 437AL(447AL),438AR(448AR) |
| TASK 71-13-00-410-010-A | Closing of the Fan Cowls 437AL(447AL),438AR(448AR) |
| TASK 72-38-11-000-010-A | Removal of the Inlet Cone |
LP Compressor (Fan) Module and Attaching PartsSubtask 72-31-00-941-061-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 72-31-00-010-067-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. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(4) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in to position to give access to the engine for the removal and installation of the fan module.
Subtask 72-31-00-020-056-A ** ON A/C NOT FOR ALL Subtask 72-31-00-410-069-A ** ON A/C NOT FOR ALL (1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(4) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in to position to give access to the engine for the removal and installation of the fan module.
D. Close the fan cowls (Ref. AMM TASK 71-13-00-410-010)
(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 72-31-00-020-057-A ** ON A/C NOT FOR ALL Subtask 72-31-00-020-058-A ** ON A/C NOT FOR ALL
B. Loosen and remove the curvic coupling bolts
(2) Install the locating ring and the adapter ring on to the front blade retaining ring.
(a) Install the locating ring (part of the IAE1J12017 WRENCH-SPECIAL) on to the front blade retaining ring with the four screws.
(b) Tighten the screws.
(c) Install the adapter ring (part of the IAE1J12017 WRENCH-SPECIAL on to the locating ring with the four nuts.
(d) Tighten the nuts lightly.
(e) Adjust the position of the adapter ring so that the 24 holes in the ring are aligned with the curvic coupling bolts.
(f) Tighten the nuts.
(3) Make sure that the spigot (part of the special wrench, IAE 1J12017) is attached to the arm with the four bolts (part of the special wrench, IAE 1J12017).
(4) Hold the fan blades and loosen the curvic coupling bolts (1) by approximately 1/4 of a turn to break the torque of the bolts.
(a) Make sure that the socket (part of the special wrench, IAE 1J12017) is attached to the arm.
(b) Put the arm in position so that:
(d) Hold the fan blades and apply torque to the wrench to loosen the curvic coupling bolt.
(e) Do steps (a) thru (d) for each curvic coupling bolt.
(5) Remove all the parts of the IAE1J12017 WRENCH-SPECIAL, from the engine.
(6) Remove three of the curvic coupling bolts, 120 degrees apart, one at a time and replace each one with an IAE1J12106 PIN-ALIGNING.
(a) Remove the curvic coupling bolt with the IAE1J12016 WRENCH-SPECIAL.
(b) Install the aligning pin in to position so that the "F" mark line on the pin is aligned with the washer face.
(7) Keep the three curvic coupling bolts adjacent to the three guide pins of the stub shaft in position and remove the other 18 bolts.
(8) Remove the hub protector, IAE 1J12180, from the stage 1 disk hub.
Subtask 72-31-00-480-056-A ** ON A/C NOT FOR ALL WARNING:
USE APPLICABLE GLOVES WHEN YOU TOUCH THE FAN BLADES.
THE LEADING EDGES OF THE FAN BLADES ARE SHARP AND CAN CAUSE INJURY.
CAUTION:
DO NOT TOUCH THE STAGE 1 FAN DISK WITH TOOLS WHEN YOU LOOSEN OR REMOVE THE CURVIC COUPLING BOLTS.
CAUTION:
THERE ARE TWENTY-FOUR CURVIC COUPLING BOLTS (1) WHICH ATTACH THE FAN MODULE TO THE LP COMPRESSOR/INTERMEDIATE CASE MODULE. DURING REMOVAL OF THE FAN MODULE, KEEP THREE OF THE BOLTS IN POSITION UNTIL AFTER THE INSTALLATION OF THE SUPPORT AND SLINGING TOOLS.
(1) Install the IAE1J12180 PROTECTOR-HUB, in to the stage 1 hub disk. (2) Install the locating ring and the adapter ring on to the front blade retaining ring.
(a) Install the locating ring (part of the IAE1J12017 WRENCH-SPECIAL) on to the front blade retaining ring with the four screws.
(b) Tighten the screws.
(c) Install the adapter ring (part of the IAE1J12017 WRENCH-SPECIAL on to the locating ring with the four nuts.
(d) Tighten the nuts lightly.
(e) Adjust the position of the adapter ring so that the 24 holes in the ring are aligned with the curvic coupling bolts.
(f) Tighten the nuts.
(3) Make sure that the spigot (part of the special wrench, IAE 1J12017) is attached to the arm with the four bolts (part of the special wrench, IAE 1J12017).
(4) Hold the fan blades and loosen the curvic coupling bolts (1) by approximately 1/4 of a turn to break the torque of the bolts.
(a) Make sure that the socket (part of the special wrench, IAE 1J12017) is attached to the arm.
(b) Put the arm in position so that:
- the spigot is engaged with the hole in the adapter ring
- the socket is installed on the curvic coupling bolt.
(d) Hold the fan blades and apply torque to the wrench to loosen the curvic coupling bolt.
(e) Do steps (a) thru (d) for each curvic coupling bolt.
(5) Remove all the parts of the IAE1J12017 WRENCH-SPECIAL, from the engine.
(6) Remove three of the curvic coupling bolts, 120 degrees apart, one at a time and replace each one with an IAE1J12106 PIN-ALIGNING.
(a) Remove the curvic coupling bolt with the IAE1J12016 WRENCH-SPECIAL.
(b) Install the aligning pin in to position so that the "F" mark line on the pin is aligned with the washer face.
(7) Keep the three curvic coupling bolts adjacent to the three guide pins of the stub shaft in position and remove the other 18 bolts.
(8) Remove the hub protector, IAE 1J12180, from the stage 1 disk hub.
C. Install the support and slinging tools
(2) Move the sling adapter, IAE1J12104, on to the work bench and remove the first hoist.
(3) Attach the second hoist to the shackle of the IAE1J12100 SLING-CANTILEVER.
(4) Lift the IAE1J12100 SLING-CANTILEVER and attach it to the IAE1J12104 ADAPTER-SLING. Safety them together with the quick release pin.
(5) Turn the adjustment handle to align the witness hole in the side plate with the S1-mark on the IAE1J12100 SLING-CANTILEVER beam.
(6) Lock the adjustment handle in position.
(7) Attach the first hoist to the lifting ring of the IAE1J12100 SLING-CANTILEVER, and make the hoist rope/chains tight.
(8) Remove the second hoist from the shackle of the IAE1J12100 SLING-CANTILEVER.
(9) Attach the second hoist to the link of the IAE1J12104 ADAPTER-SLING, and make the hoist rope/chains tight.
(10) Adjust the two hoists to turn the assembled slinging tools to the horizontal position. Then, remove the second hoist.
(11) Use the first hoist to lift the assembled slinging tools and move the assembly adjacent to the forward flange of the fan module.
(12) Install the assembled slinging tools to the fan module.
(13) Attach the flange of the IAE1J12104 ADAPTER-SLING, to the forward flange of the fan module with 12 bolts. Tighten the bolts.
(14) Turn the adjustment handle to align the witness hole in the side plate with the S2-mark on the IAE1J12100 SLING-CANTILEVER, beam.
(15) Lock the adjustment handle in position.
Subtask 72-31-00-020-059-A ** ON A/C NOT FOR ALL WARNING:
BE CAREFUL DURING THE INSTALLATION OF THE CANTILEVER SLING, IAE1J12100, AND THE SLING ADAPTER, IAE1J12104. THE SLING WEIGHS 165 LB (75 KG) AND THE ADAPTER WEIGHS 74 LB (34 KG). IF THEY FALL, THEY CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
(1) Attach the first hoist to the link of the IAE1J12104 ADAPTER-SLING and lift the adapter. (2) Move the sling adapter, IAE1J12104, on to the work bench and remove the first hoist.
(3) Attach the second hoist to the shackle of the IAE1J12100 SLING-CANTILEVER.
(4) Lift the IAE1J12100 SLING-CANTILEVER and attach it to the IAE1J12104 ADAPTER-SLING. Safety them together with the quick release pin.
(5) Turn the adjustment handle to align the witness hole in the side plate with the S1-mark on the IAE1J12100 SLING-CANTILEVER beam.
(6) Lock the adjustment handle in position.
(7) Attach the first hoist to the lifting ring of the IAE1J12100 SLING-CANTILEVER, and make the hoist rope/chains tight.
(8) Remove the second hoist from the shackle of the IAE1J12100 SLING-CANTILEVER.
(9) Attach the second hoist to the link of the IAE1J12104 ADAPTER-SLING, and make the hoist rope/chains tight.
(10) Adjust the two hoists to turn the assembled slinging tools to the horizontal position. Then, remove the second hoist.
(11) Use the first hoist to lift the assembled slinging tools and move the assembly adjacent to the forward flange of the fan module.
(12) Install the assembled slinging tools to the fan module.
(13) Attach the flange of the IAE1J12104 ADAPTER-SLING, to the forward flange of the fan module with 12 bolts. Tighten the bolts.
(14) Turn the adjustment handle to align the witness hole in the side plate with the S2-mark on the IAE1J12100 SLING-CANTILEVER, beam.
(15) Lock the adjustment handle in position.
D. Remove the fan module from the engine
(1) Remove the remaining three curvic coupling bolts (1) with the IAE1J12016 WRENCH-SPECIAL.
(2) Slowly move the fan module forward until it gets clear of the fan cowl.
(3) Lower the fan module.
Subtask 72-31-00-620-052-A ** ON A/C NOT FOR ALL (1) Remove the remaining three curvic coupling bolts (1) with the IAE1J12016 WRENCH-SPECIAL.
(2) Slowly move the fan module forward until it gets clear of the fan cowl.
(3) Lower the fan module.
E. If the IAE1J12110 STAND-STORAGE is to be used Install the IAE1J12181 COVER-PROTECTION, on to the curvic teeth of the stage 1 fan disk of the fan module. Install the three bolts (part of the protection cover) and the three washers. Tighten the bolts.
Subtask 72-31-00-550-058-A ** ON A/C NOT FOR ALL F. If the storage stand, IAE1J12110 is to be used, do the following:
(a) Put the IAE1J12110 STAND-STORAGE adjacent to the fan module.
(b) Remove the wing nut and the clamp from the IAE1J12110 STAND-STORAGE.
(c) Attach the first hoist to the link of the IAE1J12104 ADAPTER-SLING.
(d) Engage the quick release pin in to the inner holes in the bracket of the IAE1J12100 SLING-CANTILEVER.
(e) Adjust the two hoists to turn the fan module to the vertical position.
(f) Engage the quick release pin in to the outer holes in the bracket of the IAE1J12100 SLING-CANTILEVER, and hold the hoist rope/chains in the bracket.
(g) Disengage the quick release pin from the inner holes in the brackets of the cantilever sling and install the pin in the outer holes of the brackets.
(h) Lower the fan module on to the IAE1J12110 STAND-STORAGE.
Subtask 72-31-00-550-059-A ** ON A/C NOT FOR ALL CAUTION:
MAKE SURE THAT THE QUICK RELEASE PIN IS INSTALLED IN THE INNER HOLES IN THE BRACKET OF THE CANTILEVER SLING BEFORE YOU MOVE THE FAN MODULE/SLINGING TOOL ASSEMBLY.
CAUTION:
DO THIS OPERATION WITH TWO HOIST OPERATORS AND TWO PERSONS TO HELP.
(1) Install the fan module on to the storage stand (a) Put the IAE1J12110 STAND-STORAGE adjacent to the fan module.
(b) Remove the wing nut and the clamp from the IAE1J12110 STAND-STORAGE.
(c) Attach the first hoist to the link of the IAE1J12104 ADAPTER-SLING.
(d) Engage the quick release pin in to the inner holes in the bracket of the IAE1J12100 SLING-CANTILEVER.
(e) Adjust the two hoists to turn the fan module to the vertical position.
(f) Engage the quick release pin in to the outer holes in the bracket of the IAE1J12100 SLING-CANTILEVER, and hold the hoist rope/chains in the bracket.
(g) Disengage the quick release pin from the inner holes in the brackets of the cantilever sling and install the pin in the outer holes of the brackets.
(h) Lower the fan module on to the IAE1J12110 STAND-STORAGE.
G. If the storage stand, IAE1J12019 is to be used, do the following:
(1) Install the fan module on to the storage stand
(a) Put the IAE1J12019 STAND - TRANSPORT adjacent to the fan module.
(b) Move the fan module.
(c) Install the stage 1 fan disk on to the support of the storage stand, IAE1J12019, with the three screws. The screws must be 120 degrees apart from each other.
(d) Tighten the screws lightly.
(e) Turn the adjustment handle to align the witness hole in the side plate with the S/-mark on the cantilever sling, IAE1J12100, beam.
(f) Lock the adjustment handle in position.
(g) Remove the 12 bolts that attach the sling adapter, IAE1J12104, to the forward flange of the fan module.
(h) Install the IAE1J12180 PROTECTOR-HUB, in the stage 1 fan disk.
(i) Install and tighten the remaining screws.
2 Tighten the 24 screws.
(j) Remove the hub protector, IAE1J12180, from the stage 1 fan disk.
Subtask 72-31-00-080-053-A ** ON A/C NOT FOR ALL (1) Install the fan module on to the storage stand
(a) Put the IAE1J12019 STAND - TRANSPORT adjacent to the fan module.
(b) Move the fan module.
CAUTION:
MOVE THE FAN MODULE CAREFULLY. MAKE SURE THAT THE MODULE DOES NOT HIT THE STORAGE STAND.
1 Slowly move the fan module to the storage stand, IAE1J12019. (c) Install the stage 1 fan disk on to the support of the storage stand, IAE1J12019, with the three screws. The screws must be 120 degrees apart from each other.
(d) Tighten the screws lightly.
(e) Turn the adjustment handle to align the witness hole in the side plate with the S/-mark on the cantilever sling, IAE1J12100, beam.
(f) Lock the adjustment handle in position.
(g) Remove the 12 bolts that attach the sling adapter, IAE1J12104, to the forward flange of the fan module.
(h) Install the IAE1J12180 PROTECTOR-HUB, in the stage 1 fan disk.
(i) Install and tighten the remaining screws.
CAUTION:
CAREFULLY USE THE SPECIAL WRENCH TO PREVENT DAMAGE TO THE STAGE 1 FAN DISK WHEN YOU INSTALL/REMOVE AND TIGHTEN/LOOSEN THE SCREWS.
1 Install the remaining 21 screws with the IAE1J12016 WRENCH-SPECIAL. 2 Tighten the 24 screws.
(j) Remove the hub protector, IAE1J12180, from the stage 1 fan disk.
H. Remove the slinging tools from the fan module
(1) Remove the twelve bolts which attach the sling adapter, IAE1J12104, to the forward flange of the fan module.
(2) Operate the two hoists to release the slinging tools from the fan module.
(3) Lift the slinging tools until clear of the storage stand, IAE1J12110 or IAE1J12019.
(4) Lower the assembled slinging tools on to the work bench.
(5) Disengage the quick release pin which attaches the cantilever sling, IAE1J12100, to the sling adapter, IAE1J12104.
(6) Remove the second hoist from the link of the cantilever sling, IAE1J12100, and install it to the shackle of the cantilever sling, IAE1J12100.
(7) Disengage the quick release pin from the outer holes in the bracket of the cantilever sling, IAE1J12100, and engage it to the inner holes of the bracket.
(8) Remove the first hoist from the cantilever sling, IAE1J12100.
(9) Disengage the quick release pin which attaches the cantilever sling, IAE1J12100, to the sling adapter, IAE1J12104.
(10) Lift the cantilever sling, IAE1J12100, with the second hoist to release the sling adapter, IAE1J12104.
Subtask 72-31-00-550-060-A ** ON A/C NOT FOR ALL (1) Remove the twelve bolts which attach the sling adapter, IAE1J12104, to the forward flange of the fan module.
(2) Operate the two hoists to release the slinging tools from the fan module.
(3) Lift the slinging tools until clear of the storage stand, IAE1J12110 or IAE1J12019.
(4) Lower the assembled slinging tools on to the work bench.
(5) Disengage the quick release pin which attaches the cantilever sling, IAE1J12100, to the sling adapter, IAE1J12104.
(6) Remove the second hoist from the link of the cantilever sling, IAE1J12100, and install it to the shackle of the cantilever sling, IAE1J12100.
(7) Disengage the quick release pin from the outer holes in the bracket of the cantilever sling, IAE1J12100, and engage it to the inner holes of the bracket.
(8) Remove the first hoist from the cantilever sling, IAE1J12100.
(9) Disengage the quick release pin which attaches the cantilever sling, IAE1J12100, to the sling adapter, IAE1J12104.
(10) Lift the cantilever sling, IAE1J12100, with the second hoist to release the sling adapter, IAE1J12104.
I. If the storage stand, IAE1J12110, was used, install the clamp and wing nut
(1) Install the clamp of the storage stand, IAE1J12110, on the front hub of the stage 1 fan disk.
(2) Safety the clamp with the wing nut of the storage stand, IAE1J12110.
Subtask 72-31-00-620-053-A ** ON A/C NOT FOR ALL (1) Install the clamp of the storage stand, IAE1J12110, on the front hub of the stage 1 fan disk.
(2) Safety the clamp with the wing nut of the storage stand, IAE1J12110.
J. Install the IAE1J12182 PROTECTOR-RETAINING and the IAE1J12183 COVER-PROTECTION
(1) Remove the three aligning pins, IAE1J12106, from the stub shaft.
(2) Align the three guide pin holes in the retaining protector, IAE1J12182, with the three guide pins of the stub shaft.
(3) Install the retaining protector, IAE1J12182, to the front face of the stubshaft.
(4) Install the three bolts (part of the retaining protector).
(5) Tighten the bolts.
(6) Install the protection cover, IAE1J12183, on to the fan case of the LP compressor.
(1) Remove the three aligning pins, IAE1J12106, from the stub shaft.
(2) Align the three guide pin holes in the retaining protector, IAE1J12182, with the three guide pins of the stub shaft.
(3) Install the retaining protector, IAE1J12182, to the front face of the stubshaft.
(4) Install the three bolts (part of the retaining protector).
(5) Tighten the bolts.
(6) Install the protection cover, IAE1J12183, on to the fan case of the LP compressor.
NOTE: Install the protection cover, IAE1J12183, when the fan module is removed from the engine.