DOC AIRBUS | AMM A320FInstallation of the LP Compressor Fan Blades [IAE]
TASK 72-31-11-400-010-C
Installation of the LP Compressor Fan Blades
This TASK is for V2500-A5 engines.
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 72-31-11-860-054-A ** ON A/C NOT FOR ALL
Subtask 72-31-11-420-093-A ** ON A/C NOT FOR ALL
(a) If you can push the PLASTIC STRIP easily, the rubber seal is in the correct position. Go to step (3).
(b) If you cannot push the PLASTIC STRIP easily, the rubber seal is possibly in the incorrect position. Go to step (2).
(2) Push the rubber seal into the correct position with the PLASTIC STRIP.
(3) Move the PLASTIC STRIP forward:
(a) If you can move the PLASTIC STRIP easily, the rubber seal is in the correct position. Continue to move forward and go to step (5).
(b) If the movement becomes difficult, the rubber seal is in the incorrect position. Correct the rubber seal position as given in step (4).
(4) Correct the position of the annulus filler rubber seal:
(b) Push the rubber seal in the inner direction with the PLASTIC STRIP to put the rubber seal in the correct position.
(5) Do steps (3) and (4) until the PLASTIC STRIP goes to the front end of the fan blade (31).
(6) Go to Para. 4.P.
Subtask 72-31-11-410-065-A ** ON A/C NOT FOR ALL
Subtask 72-31-11-942-074-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:44:45 UTC
Installation of the LP Compressor Fan Blades
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING:
DO NOT LET ENGINE OIL STAY ON YOUR SKIN FOR A LONG TIME. FLUSH THE OIL FROM YOUR SKIN WITH WATER. THE OIL IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY.
CAUTION:
BE CAREFUL DURING THE INSTALLATION OF THE FRONT BLADE RETAINING RING AND THE LP COMPRESSOR FAN BLADE. THEY EACH WEIGH APPROXIMATELY 10 LB (4.5 KG).
ZONE: 400
1. Reason for the JobThis TASK is for V2500-A5 engines.
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 | MAT - WORK |
| No specific | AR | PLASTIC STRIP |
| No specific | 1 | SCALE |
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 220 and 180 lbf.in (2.49 and 2.03 m.daN )  | |
| IAE1J12141 | 1 | BOLT-PUSHER |
| IAE1J12312 | 1 | PROGRAM, DISTRIBUTION - FAN BLADE |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V01-124) | Isopropyl Alcohol, Technical grade |
| (Material No.V02-099) | lint free cloth |
| (Material No.V06-069) | marker |
| (Material No.V10-038) | petroleum |
| (Material No.V10-041) | petrolatum, white |
| (Material No.V10-077) | lubricant (engine oil) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 70-23-11-911-013-A | General Torque Tightening Techniques |
| TASK 71-00-00-700-013-A | Procedure to Dry Out the High Pressure Turbine (HPT) after Oil Contamination |
| TASK 71-00-00-700-022-B | Test No.8 : Vibration Survey |
| TASK 71-00-00-710-018-A | Discontinued Start, Restart and Shutdown Procedures |
| TASK 71-00-00-710-043-A | Normal Engine Automatic-Start Procedure |
| TASK 71-00-00-710-047-A | Normal Engine Manual-Start Procedure |
| TASK 71-00-00-860-010-B | Engine Operation Limits, Guidelines and Special Procedures |
| TASK 72-31-11-000-010-B | Removal of the LP Compressor Fan Blades |
| TASK 72-31-11-200-010-B | Inspection of the Low Pressure (LP) Compressor Fan Blades |
| TASK 72-31-11-400-011-B | Installation of the Annulus Fillers |
| TASK 72-31-12-200-010-B | Inspection of the Stage 1 Fan Disk and the Rear Blade Retaining Ring |
| TASK 72-38-11-400-010-A | Installation of the Inlet Cone |
Selection of Balance Correction Method and Engine TestSubtask 72-31-11-860-054-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Put the ground support equipment in position.
(a) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position to give access to the engine intake.
(b) Put the MAT - WORK in position in the intake cowl.
Subtask 72-31-11-360-050-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Put the ground support equipment in position.
(a) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position to give access to the engine intake.
(b) Put the MAT - WORK in position in the intake cowl.
NOTE: Make sure that the red warning pennants on the MAT - WORK can be seen external to the aircraft.
NOTE: Make sure that the MAT - WORK has sufficient dimensions to give full protection to the lower half of the intake cowl.
B. Make sure that the dovetail slots of the LP Compressor Fan disk (Fan disk) have been inspected before the LP Compressor Fan Blades are installed (Fan blades) (Ref. AMM TASK 72-31-12-200-010).
Subtask 72-31-11-360-051-A ** ON A/C NOT FOR ALL C. Make sure that the LP Compressor Fan blades have been inspected before they are installed (Ref. AMM TASK 72-31-11-200-010)
4. ProcedureSubtask 72-31-11-420-093-A ** ON A/C NOT FOR ALL
A. Make a Selection of Which Fan Blade Installation Procedure is Necessary
(1) If the fan blade(s) to be installed is the original fan blade(s) and is to be replaced in the original fan disk slot position(s) and Moment Weight Difference (MWD) is unchanged, go to Para. 4.F. for individual fan blade(s) or go to Para. 4.G. for a full set of fan blades.
(2) If the fan blade(s) to be installed is not from the original set installed on the engine, make a selection of fan blade position and balance correction method.
Subtask 72-31-11-420-139-A ** ON A/C NOT FOR ALL (1) If the fan blade(s) to be installed is the original fan blade(s) and is to be replaced in the original fan disk slot position(s) and Moment Weight Difference (MWD) is unchanged, go to Para. 4.F. for individual fan blade(s) or go to Para. 4.G. for a full set of fan blades.
(2) If the fan blade(s) to be installed is not from the original set installed on the engine, make a selection of fan blade position and balance correction method.
B. Make a Selection of Which Balance Correction Procedure is Necessary.
(1) Get a replacement fan blade with a radial moment weight as near as possible to that of the removed fan blade. Record the moment weight of the replacement fan blades.
(2) Subtract the radial moment weight of the removed fan blade (A) from the radial moment weight of the replacement fan blade (B).
(3) Record the MWD, (B-A) together with the sign (+ or -).
(4) The balance correction is recommended to minimize vibration levels as follows:
(b) If the MWD is more than +/- 50 oz.in. and less than +/- 150 oz.in., you can correct the balance by Method 2. If you cannot use Method 2, use Method 3. If you use Method 3, go to Para. 4.E.
(c) If the MWD is greater than 150 oz.in., use Method 3 by Para. 4.E.
Subtask 72-31-11-970-065-A ** ON A/C NOT FOR ALL (1) Get a replacement fan blade with a radial moment weight as near as possible to that of the removed fan blade. Record the moment weight of the replacement fan blades.
(2) Subtract the radial moment weight of the removed fan blade (A) from the radial moment weight of the replacement fan blade (B).
(3) Record the MWD, (B-A) together with the sign (+ or -).
(4) The balance correction is recommended to minimize vibration levels as follows:
NOTE: When one or two fan blades are replaced, select the applicable method for each fan blade. If three or more fan blades are replaced, select balance correction Method 3.
(a) If the MWD is not more than +/- 50 oz.in., you can correct the balance by Method 1. If you use Method 1, go to Para. 4.C. If you can not use the Method 1, use Method 2, go to Para. 4.D. If you can not use the Method 2, use the Method 3, go to Para. 4.E. (b) If the MWD is more than +/- 50 oz.in. and less than +/- 150 oz.in., you can correct the balance by Method 2. If you cannot use Method 2, use Method 3. If you use Method 3, go to Para. 4.E.
(c) If the MWD is greater than 150 oz.in., use Method 3 by Para. 4.E.
C. Calculate the Balance Correction Distribution of the Trim Balance Weights (Method 1)
(2) Calculate the bolt positions where the trim balance weights (20) thru (23) are to be installed
The position must satisfy the following conditions:
(a) If the MWD is negative (-), the centre line of the weight set/pair is nearest to the angular position of the replacement fan blade.
(b) If the MWD is positive (+), the centre line of the weight set/pair is nearest to the diametrically opposite position of the replacement fan blade.
(c) The trim balance weights (20) thru (23) are installed at open bolt hole positions.
(d) Record the positions of the balance correction solution, and retain the solution for use when the front blade retaining ring (17) is installed.
(3) Go to para. 4.F.
Subtask 72-31-11-420-132-A ** ON A/C NOT FOR ALL NOTE: Install a weight set or weight pair of the trim balance weights (20) thru (23), to the 36 bolt hole flange of the front blade retaining ring (17) to correct the MWD by this method. The 36 bolt flange is the joint that attaches the front blade retaining ring to the fan disk (15).
(1) Find a weight set or a weight pair in Table 6 and Table 7. The difference between the balance effect value of the weight set/pair and the MWD must be within 4 oz.in. (2) Calculate the bolt positions where the trim balance weights (20) thru (23) are to be installed
The position must satisfy the following conditions:
(a) If the MWD is negative (-), the centre line of the weight set/pair is nearest to the angular position of the replacement fan blade.
(b) If the MWD is positive (+), the centre line of the weight set/pair is nearest to the diametrically opposite position of the replacement fan blade.
(c) The trim balance weights (20) thru (23) are installed at open bolt hole positions.
(d) Record the positions of the balance correction solution, and retain the solution for use when the front blade retaining ring (17) is installed.
(3) Go to para. 4.F.
D. Make a Selection of Matched Pairs of Fan Blades (Method 2)
(2) Select a pair of replacement fan blades for the opposite position from the spare stock. The pair of replacement blades must satisfy the following condition:
(a) MWD (at the opposite position) = MWD (at the damaged fan blade position) +/- 4 oz.in.
(3) Go to para. 4.F.
Subtask 72-31-11-420-133-A ** ON A/C NOT FOR ALL NOTE: This method removes the replacement of the damaged fan blade and the fan blade diametrically opposite.
NOTE: This method relies on the operator having sufficient stock of spare fan blades with a range of radial moment weights to be able to match a pair of fan blades.
(1) Remove the fan blade which is 180 degrees opposite to the damaged fan blade. (Ref. AMM TASK 72-31-11-000-010). (2) Select a pair of replacement fan blades for the opposite position from the spare stock. The pair of replacement blades must satisfy the following condition:
(a) MWD (at the opposite position) = MWD (at the damaged fan blade position) +/- 4 oz.in.
(3) Go to para. 4.F.
E. Change the Distribution of the 22 Fan Blades (Method 3)
(1) Change the distribution of the 22 fan blades.
(a) Select 22 fan blades to make up a full set.
(b) Record the following values that are written on the bottom face of the fan blade:
1 Radial moment weight
2 Axial moment weight
3 Tangential moment weight
4 Fan blade serial number
5 Mass weight (where marked).
(c) If the mass weights are not marked on the fan blade, weight each fan blade with a SCALE.
(e) Use marker (Material No.V06-069) to make temporary marks on the fan blades to show the fan blade position as derived from the optimized distribution pattern.
1 As an alternative to the marker (Material No.V06-069) , it is permitted to use a marker that is specified in IAE V2500 Standard Practices Manual (SPP-V2500-1IA) 70-09-01-400-501 - Procedure To Make Temporary Marks On Components And Assemblies.
(2) Go to para. 4.G
Subtask 72-31-11-420-134-A ** ON A/C NOT FOR ALL (1) Change the distribution of the 22 fan blades.
(a) Select 22 fan blades to make up a full set.
(b) Record the following values that are written on the bottom face of the fan blade:
1 Radial moment weight
2 Axial moment weight
3 Tangential moment weight
4 Fan blade serial number
5 Mass weight (where marked).
(c) If the mass weights are not marked on the fan blade, weight each fan blade with a SCALE.
NOTE: Weighing the mass of each fan blade will give a more accurate balance solution from the fan blade distribution program. If insufficient time or no access to a suitable mass weight scale use a nominal figure of 155 oz. in the program for fan blade mass.
(d) Input the data from steps (1)(b) and (1)(c) to the IAE1J12312 PROGRAM, DISTRIBUTION - FAN BLADE and calculate the optimized fan blade distribution pattern. (e) Use marker (Material No.V06-069) to make temporary marks on the fan blades to show the fan blade position as derived from the optimized distribution pattern.
1 As an alternative to the marker (Material No.V06-069) , it is permitted to use a marker that is specified in IAE V2500 Standard Practices Manual (SPP-V2500-1IA) 70-09-01-400-501 - Procedure To Make Temporary Marks On Components And Assemblies.
(2) Go to para. 4.G
F. Installation of an Individual Fan Blade
(2) Ensure that the adjacent fan blade (blade 'Y') that is counter-clockwise to the replacement fan blade (blade 'X') has been pulled forward such that the forward chock pad is disengaged from the fan disk dovetail slot.
(3) Apply the lubricant.
V10-041 petrolatum, white
(b) Apply petroleum (Material No.V10-038) orV10-041 petrolatum, white
(4) Install the replacement fan blade.
1 Align the three locating holes in the plate and clevis assembly (part of IAE1J12004 PULLER PUSHER) with the locating pins on the fan disk.
2 Attach the plate and clevis assembly to the fan disk with the nine screws (part of IAE1J12004 PULLER PUSHER). Tighten the screws.
3 Make sure that the stopper (part of IAE1J12004 PULLER PUSHER) and the two screws (part of IAE1J12004 PULLER PUSHER) are not installed on the plate and clevis assembly.
5 Install the handle and pusher assembly (part of IAE1J12004 PULLER PUSHER) to the plate and clevis assembly with the clevis bolt and the nut (part of IAE1J12004 PULLER PUSHER). Tighten the nut.
(b) Engage the fan blade root in the fan disk slot.
(c) Put the pad (part of IAE1J12004 PULLER PUSHER) and pusher (part of IAE1J12004 PULLER PUSHER) on the blade root through the hole of the support and set the pad.
(d) Turn the handle (part of IAE1J12004 PULLER PUSHER) in the direction D to push the blade (blade 'X') rearward fully.
(e) Repeat step (b) thru (d) for the adjacent fan blade (blade 'Y').
(f) Repeat to install the remaining replacement fan blades as required.
(g) Remove the IAE1J12004 PULLER PUSHER from the disk.
(5) Go to para. 4.H.
Subtask 72-31-11-420-135-A ** ON A/C NOT FOR ALL WARNING:
BE CAREFUL DURING THE REMOVAL OR INSTALLATION OF THE FAN BLADE. IT WEIGHS APPROXIMATELY 10 LB (4.5 KG). IF IT FALLS, IT CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
WARNING:
USE APPLICABLE GLOVES WHEN YOU TOUCH THE FAN BLADES.
THE LEADING EDGES OF THE FAN BLADES ARE SHARP AND CAN CAUSE INJURY.
CAUTION:
FAN BLADES MUST BE INSERTED INTO THE DISK IN THE DIRECTION INDICATED. BLADES THAT ARE NOT INSTALLED IN THE DIRECTION INDICATED MAY RESULT IN OUT OF BALANCE.
(1) Remove the replacement fan blade from the storage container. (2) Ensure that the adjacent fan blade (blade 'Y') that is counter-clockwise to the replacement fan blade (blade 'X') has been pulled forward such that the forward chock pad is disengaged from the fan disk dovetail slot.
(3) Apply the lubricant.
CAUTION:
DO NOT APPLY THE LUBRICANT TO THE BLADE DOVETAIL. UNWANTED MATERIAL CAN BE TRAPPED IN THE LUBRICANT APPLIED TO THE FAN BLADE DOVETAIL. THE UNWANTED MATERIAL CAN CAUSE DAMAGE TO THE FAN BLADE DOVETAIL AND THE FAN DISK SLOT WHEN YOU INSTALL THE FAN BLADE INTO THE FAN DISK.
(a) Apply petroleum (Material No.V10-038) or (b) Apply petroleum (Material No.V10-038) or
(4) Install the replacement fan blade.
CAUTION:
MAKE SURE THAT THE FAN BLADE DOES NOT TOUCH THE ADJACENT FAN BLADES WHILE YOU REMOVE/INSTALL IT. IF YOU LET THE FAN BLADES TOUCH EACH OTHER YOU CAN CAUSE DAMAGE TO THE FAN BLADE(S).
CAUTION:
BE CAREFUL WHEN YOU INSTALL THE FAN BLADE. IF YOU ARE NOT CAREFUL, YOU CAN CAUSE DAMAGE TO THE FAN BLADE AND THE PADS.
(a) Install the IAE1J12004 PULLER PUSHER 1 off on the disk. 1 Align the three locating holes in the plate and clevis assembly (part of IAE1J12004 PULLER PUSHER) with the locating pins on the fan disk.
2 Attach the plate and clevis assembly to the fan disk with the nine screws (part of IAE1J12004 PULLER PUSHER). Tighten the screws.
3 Make sure that the stopper (part of IAE1J12004 PULLER PUSHER) and the two screws (part of IAE1J12004 PULLER PUSHER) are not installed on the plate and clevis assembly.
NOTE: They were removed in subtask 72-31-11-020-073 of (Ref. AMM TASK 72-31-11-000-010).
4 Install the support (part of IAE1J12004 PULLER PUSHER) to the plate and clevis assembly with the two bolts (part of IAE1J12004 PULLER PUSHER). Tighten the bolt. 5 Install the handle and pusher assembly (part of IAE1J12004 PULLER PUSHER) to the plate and clevis assembly with the clevis bolt and the nut (part of IAE1J12004 PULLER PUSHER). Tighten the nut.
(b) Engage the fan blade root in the fan disk slot.
(c) Put the pad (part of IAE1J12004 PULLER PUSHER) and pusher (part of IAE1J12004 PULLER PUSHER) on the blade root through the hole of the support and set the pad.
(d) Turn the handle (part of IAE1J12004 PULLER PUSHER) in the direction D to push the blade (blade 'X') rearward fully.
(e) Repeat step (b) thru (d) for the adjacent fan blade (blade 'Y').
(f) Repeat to install the remaining replacement fan blades as required.
(g) Remove the IAE1J12004 PULLER PUSHER from the disk.
(5) Go to para. 4.H.
G. Installation of the Full Set of 22 Fan Blades
(a) Align the three locating holes in the plate and clevis assembly (part of IAE1J12004 PULLER PUSHER) with the locating pins on the fan disk.
(b) Attach the plate and clevis assembly to the fan disk with the nine screws (part of IAE1J12004 PULLER PUSHER). Tighten the screws.
(c) Make sure that the stopper (part of IAE1J12004 PULLER PUSHER) and the two screws (part of IAE1J12004 PULLER PUSHER) are not installed on the plate and clevis assembly.
(e) Install the handle and pusher assembly (part of IAE1J12004 PULLER PUSHER) to the plate and clevis assembly with the clevis bolt and the nut (part of IAE1J12004 PULLER PUSHER). Tighten the nut.
(2) Install the No.1 fan blade.
(a) Find the No. 1 slot of the fan disk (15).
(b) Apply petroleum (Material No.V10-038) orV10-041 petrolatum, white
(c) Apply petroleum (Material No.V10-038) orV10-041 petrolatum, white
(d) Engage the No.1 fan blade root in the No.1 fan disk slot. Take care to prevent the contact between the fan blade tip and the fan case acoustic panels or the fan track lining.
(e) Put the pad (part of IAE1J12004 PULLER PUSHER) and pusher (part of IAE1J12004 PULLER PUSHER) on the blade root through the hole of the support and set the pad.
(f) Turn the handle (part of IAE1J12004 PULLER PUSHER) in the direction D to push the blade rearward fully.
(3) Repeat the step (2) for the next 19 fan blades in the sequence 22, 21, 20, 19, to 4.
V10-041 petrolatum, white
(b) Apply petroleum (Material No.V10-038) orV10-041 petrolatum, white
(c) Engage the No.3 fan blade root in the No.3 fan disk slot. Take care to prevent contact between the fan blade tip and the fan case acoustic panels or the fan track lining.
(d) Put the pad (part of IAE1J12004 PULLER PUSHER) and pusher (part of IAE1J12004 PULLER PUSHER) on the blade root through the hole of the support and set the pad.
(e) Turn the handle (part of IAE1J12004 PULLER PUSHER) in the direction D to push the blade rearward, but do not engage the blade fully.
(f) Apply petroleum (Material No.V10-038) orV10-041 petrolatum, white
(g) Engage the No.2 fan blade root in the No.2 fan disk slot. Take care to prevent contact between the fan blade tip and the fan case acoustic panels or the fan track lining.
(h) Put the pad (part of IAE1J12004 PULLER PUSHER) and pusher (part of IAE1J12004 PULLER PUSHER) on the No.2 blade root through the hole of the support and set the pad.
(i) Turn the handle (part of IAE1J12004 PULLER PUSHER) in the direction D to push the blade rearward fully.
(j) Put the pad (part of IAE1J12004 PULLER PUSHER) and pusher (part of IAE1J12004 PULLER PUSHER) on the No.3 fan blade root through the hole of the support and set the pad.
(k) Turn the handle (part of IAE1J12004 PULLER PUSHER) in the direction D to push the blade rearward fully.
(l) Remove the IAE1J12004 PULLER PUSHER from the disk.
Subtask 72-31-11-420-136-A ** ON A/C NOT FOR ALL WARNING:
BE CAREFUL DURING THE REMOVAL OR INSTALLATION OF THE FAN BLADE. IT WEIGHS APPROXIMATELY 10 LB (4.5 KG). IF IT FALLS, IT CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
WARNING:
USE APPLICABLE GLOVES WHEN YOU TOUCH THE FAN BLADES.
THE LEADING EDGES OF THE FAN BLADES ARE SHARP AND CAN CAUSE INJURY.
(1) Install the IAE1J12004 PULLER PUSHER 1 off on the disk. (a) Align the three locating holes in the plate and clevis assembly (part of IAE1J12004 PULLER PUSHER) with the locating pins on the fan disk.
(b) Attach the plate and clevis assembly to the fan disk with the nine screws (part of IAE1J12004 PULLER PUSHER). Tighten the screws.
(c) Make sure that the stopper (part of IAE1J12004 PULLER PUSHER) and the two screws (part of IAE1J12004 PULLER PUSHER) are not installed on the plate and clevis assembly.
NOTE: They were removed in subtask 72-31-11-020-072 of (Ref. AMM TASK 72-31-11-000-010).
(d) Install the support (part of IAE1J12004 PULLER PUSHER) to the plate and clevis assembly with the two bolts (part of IAE1J12004 PULLER PUSHER). Tighten the bolt. (e) Install the handle and pusher assembly (part of IAE1J12004 PULLER PUSHER) to the plate and clevis assembly with the clevis bolt and the nut (part of IAE1J12004 PULLER PUSHER). Tighten the nut.
(2) Install the No.1 fan blade.
(a) Find the No. 1 slot of the fan disk (15).
(b) Apply petroleum (Material No.V10-038) or
(c) Apply petroleum (Material No.V10-038) or
(d) Engage the No.1 fan blade root in the No.1 fan disk slot. Take care to prevent the contact between the fan blade tip and the fan case acoustic panels or the fan track lining.
(e) Put the pad (part of IAE1J12004 PULLER PUSHER) and pusher (part of IAE1J12004 PULLER PUSHER) on the blade root through the hole of the support and set the pad.
(f) Turn the handle (part of IAE1J12004 PULLER PUSHER) in the direction D to push the blade rearward fully.
(3) Repeat the step (2) for the next 19 fan blades in the sequence 22, 21, 20, 19, to 4.
NOTE: The fan blades must be installed in the clockwise direction, looking rearward from the front of engine, to prevent damage due to contact between the leading and trailing edges of the fan blades as they are installed.
(4) Install the No.3 fan blade and the No.2 fan blade. CAUTION:
MAKE SURE THAT THE FAN BLADE DOES NOT TOUCH THE ADJACENT FAN BLADES WHILE YOU REMOVE/INSTALL IT. IF YOU LET THE FAN BLADES TOUCH EACH OTHER YOU CAN CAUSE DAMAGE TO THE FAN BLADE(S).
CAUTION:
BE CAREFUL WHEN YOU INSTALL THE FAN BLADE. IF YOU ARE NOT CAREFUL, YOU CAN CAUSE DAMAGE TO THE FAN BLADE AND THE PADS.
(a) Apply petroleum (Material No.V10-038) or (b) Apply petroleum (Material No.V10-038) or
(c) Engage the No.3 fan blade root in the No.3 fan disk slot. Take care to prevent contact between the fan blade tip and the fan case acoustic panels or the fan track lining.
(d) Put the pad (part of IAE1J12004 PULLER PUSHER) and pusher (part of IAE1J12004 PULLER PUSHER) on the blade root through the hole of the support and set the pad.
(e) Turn the handle (part of IAE1J12004 PULLER PUSHER) in the direction D to push the blade rearward, but do not engage the blade fully.
(f) Apply petroleum (Material No.V10-038) or
(g) Engage the No.2 fan blade root in the No.2 fan disk slot. Take care to prevent contact between the fan blade tip and the fan case acoustic panels or the fan track lining.
(h) Put the pad (part of IAE1J12004 PULLER PUSHER) and pusher (part of IAE1J12004 PULLER PUSHER) on the No.2 blade root through the hole of the support and set the pad.
(i) Turn the handle (part of IAE1J12004 PULLER PUSHER) in the direction D to push the blade rearward fully.
(j) Put the pad (part of IAE1J12004 PULLER PUSHER) and pusher (part of IAE1J12004 PULLER PUSHER) on the No.3 fan blade root through the hole of the support and set the pad.
(k) Turn the handle (part of IAE1J12004 PULLER PUSHER) in the direction D to push the blade rearward fully.
(l) Remove the IAE1J12004 PULLER PUSHER from the disk.
H. Installation of the Annulus Filler(s)
(1) Install the annulus fillers (13) (Ref. AMM TASK 72-31-11-400-011).
Subtask 72-31-11-420-137-A ** ON A/C NOT FOR ALL (1) Install the annulus fillers (13) (Ref. AMM TASK 72-31-11-400-011).
I. Installation of the Front Blade Retaining Ring
(2) Align the three locating holes in the front blade retaining ring (17) with the three headless pins (16) attached to the fan disk (15).
(3) Install the four pusher bolts (part of IAE1J12141 BOLT-PUSHER) set 1 off.
(a) Carefully turn each pusher bolt at 90 degrees apart from each other in increments to apply the same pressure in turn to the front blade retaining ring (17).
(4) Remove the four pusher bolts (part of IAE1J12141 BOLT-PUSHER) from the front blade retaining ring (17).
Subtask 72-31-11-420-138-A ** ON A/C NOT FOR ALL WARNING:
BE CAREFUL DURING THE REMOVAL OR INSTALLATION OF THE FRONT BLADE RETAINING RING. IT WEIGHS APPROXIMATELY 10 LB (4.5 KG). IF IT FALLS, IT CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
(1) Identify the correlation mark on the front blade retaining ring (17) signified by mark '1' or '*' and align this mark with the No.1 fan blade. (2) Align the three locating holes in the front blade retaining ring (17) with the three headless pins (16) attached to the fan disk (15).
(3) Install the four pusher bolts (part of IAE1J12141 BOLT-PUSHER) set 1 off.
(a) Carefully turn each pusher bolt at 90 degrees apart from each other in increments to apply the same pressure in turn to the front blade retaining ring (17).
NOTE: Hold a fan blade when you turn the pusher bolts. This prevents rotation of the LP-Compressor Fan rotor.
(b) Continue to turn each pusher bolt (part of IAE1J12141 BOLT-PUSHER) in turn until each locating hole (12) in the front blade retaining ring (17) engages correctly with the locating pins (14). (4) Remove the four pusher bolts (part of IAE1J12141 BOLT-PUSHER) from the front blade retaining ring (17).
J. Installation of the Bolts (24) and the Trim Balance Weights
(1) Lubricate the threads of the 36 bolts (24) withV10-077 lubricant (engine oil)
(2) If Method 3 was not used, do the following steps:
(a) Install the bolts (24) with the trim balance weights (20) thru (23), which were removed, (Ref. AMM TASK 72-31-11-000-010) to the initial positions.
(b) If Method 1 was used, install the bolts (24) with the additional trim balance weights (20) thru (23) to the positions that were calculated in para. 4.C.
(c) Install the remaining bolts (24), which were not installed in step (2)(a) and (b), to the 36 bolt holes.
(d) Go to the step (4).
(3) If Method 3 was used, do the following steps:
(a) Install the bolts (24) to the 36 bolt holes.
(4) TORQUE the bolts (24) to between 220 and 180 lbf.in (2.49 and 2.03 m.daN ) (Ref. AMM TASK 70-23-11-911-013), in the sequence.
(5) Torque the bolts (24) in the sequence again to make sure that the bolts are at the correct torque value.
Subtask 72-31-11-110-093-A ** ON A/C NOT FOR ALL (1) Lubricate the threads of the 36 bolts (24) with
(2) If Method 3 was not used, do the following steps:
(a) Install the bolts (24) with the trim balance weights (20) thru (23), which were removed, (Ref. AMM TASK 72-31-11-000-010) to the initial positions.
(b) If Method 1 was used, install the bolts (24) with the additional trim balance weights (20) thru (23) to the positions that were calculated in para. 4.C.
(c) Install the remaining bolts (24), which were not installed in step (2)(a) and (b), to the 36 bolt holes.
(d) Go to the step (4).
(3) If Method 3 was used, do the following steps:
(a) Install the bolts (24) to the 36 bolt holes.
NOTE: Do not install the trim balance weights (20) thru (23) which were removed (Ref. AMM TASK 72-31-11-000-010).
(b) Go to the step (4). (4) TORQUE the bolts (24) to between 220 and 180 lbf.in (2.49 and 2.03 m.daN )
(Ref. AMM TASK 70-23-11-911-013), in the sequence. (5) Torque the bolts (24) in the sequence again to make sure that the bolts are at the correct torque value.
K. Cleaning of the Temporary Marks
V01-124 Isopropyl Alcohol, Technical grade
(a) The annulus fillers (13) and the fan blades (31)
(b) The balance weights (20) thru (23) and the fan blade holes on the front blade retaining ring (17).
Subtask 72-31-11-420-095-A ** ON A/C NOT FOR ALL NOTE: The removal of the temporary marks is optional.
(1) Make a clean lint free cloth (Material No.V02-099) moist with the (a) The annulus fillers (13) and the fan blades (31)
(b) The balance weights (20) thru (23) and the fan blade holes on the front blade retaining ring (17).
L. Secure the 22 Annulus Fillers with the Bolts
(1) Lubricate the threads of the 22 bolts (11) with clean approvedV10-077 lubricant (engine oil)
(2) Install the bolts (11).
(3) TORQUE the bolts (11) to between 220 and 180 lbf.in (2.49 and 2.03 m.daN ) (Ref. AMM TASK 70-23-11-911-013), in the sequence shown.
(4) Torque the bolts (11) in sequence again to make sure the bolts are at the correct torque value.
Subtask 72-31-11-280-068-A ** ON A/C NOT FOR ALL (1) Lubricate the threads of the 22 bolts (11) with clean approved
(2) Install the bolts (11).
(3) TORQUE the bolts (11) to between 220 and 180 lbf.in (2.49 and 2.03 m.daN )
(Ref. AMM TASK 70-23-11-911-013), in the sequence shown. (4) Torque the bolts (11) in sequence again to make sure the bolts are at the correct torque value.
CAUTION:
DO NOT USE A PLASTIC STRIP WITH A ROUGH SURFACE OR EDGES. THE PLASTIC STRIP CAN CAUSE DAMAGE TO THE RUBBER SEAL.
CAUTION:
DO NOT BREAK THE PLASTIC STRIP AND DO NOT LEAVE PIECES OF IT IN THE FAN. THE PIECES CAN CAUSE DAMAGE TO THE RUBBER SEAL.
M. Make sure that the annulus filler rubber seal is in the correct position.NOTE: Do this subtask for both sides of all the 22 fan blades. The rubber seal of the annulus fillers (13) can move to an incorrect position when you install the front blade retaining ring (17).
(1) Push the PLASTIC STRIP between the annulus filler (13) and the blade at the rear end:(a) If you can push the PLASTIC STRIP easily, the rubber seal is in the correct position. Go to step (3).
(b) If you cannot push the PLASTIC STRIP easily, the rubber seal is possibly in the incorrect position. Go to step (2).
(2) Push the rubber seal into the correct position with the PLASTIC STRIP.
(3) Move the PLASTIC STRIP forward:
(a) If you can move the PLASTIC STRIP easily, the rubber seal is in the correct position. Continue to move forward and go to step (5).
(b) If the movement becomes difficult, the rubber seal is in the incorrect position. Correct the rubber seal position as given in step (4).
(4) Correct the position of the annulus filler rubber seal:
CAUTION:
IF A RUBBER SEAL IS IN POSITION, DO NOT PUSH THE SEAL FORWARD WITH THE PLASTIC. THIS CAN CAUSE DAMAGE TO THE RUBBER SEAL.
(a) Pull the PLASTIC STRIP out of the annulus filler (13). (b) Push the rubber seal in the inner direction with the PLASTIC STRIP to put the rubber seal in the correct position.
(5) Do steps (3) and (4) until the PLASTIC STRIP goes to the front end of the fan blade (31).
(6) Go to Para. 4.P.
N. Installation of the Inlet Cone
(a) Install the inlet cone with the trim balance weights (1) thru (5) which were removed (Ref. AMM TASK 72-31-11-000-010), to the initial positions (Ref. AMM TASK 72-38-11-400-010).
(2) If Method 3 was used, do the following step:
(a) Install the inlet cone. (Ref. AMM TASK 72-38-11-400-010).
(a) Install the inlet cone with the trim balance weights (1) thru (5) which were removed (Ref. AMM TASK 72-31-11-000-010), to the initial positions (Ref. AMM TASK 72-38-11-400-010).
Subtask 72-31-11-410-066-A ** ON A/C NOT FOR ALL 5. Close-upCAUTION:
READ ALL THE INSTRUCTIONS IN THIS SUBTASK BEFORE YOU INSTALL THE INLET CONE. IF YOU DO NOT, DAMAGE TO THE ENGINE CAN OCCUR.
(1) If Method 1 or 2 was used, do the following step: (a) Install the inlet cone with the trim balance weights (1) thru (5) which were removed (Ref. AMM TASK 72-31-11-000-010), to the initial positions (Ref. AMM TASK 72-38-11-400-010).
(2) If Method 3 was used, do the following step:
(a) Install the inlet cone. (Ref. AMM TASK 72-38-11-400-010).
NOTE: Do not install the trim balance weights (1) thru (5) if removed (Ref. AMM TASK 72-31-11-000-010).
(3) If the balance correction procedure (Method 1, 2 or 3) is not required, do the following step: (a) Install the inlet cone with the trim balance weights (1) thru (5) which were removed (Ref. AMM TASK 72-31-11-000-010), to the initial positions (Ref. AMM TASK 72-38-11-400-010).
Subtask 72-31-11-942-074-A ** ON A/C NOT FOR ALL
A. Remove the Ground Support Equipment
(1) Remove the workmat from the intake cowl.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
Subtask 72-31-11-710-050-A ** ON A/C NOT FOR ALL (1) Remove the workmat from the intake cowl.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
B. Dry-Out High Pressure Turbine
(1) Perform the dry-out procedure for the High Pressure Turbine (Ref. AMM TASK 71-00-00-700-013).
Subtask 72-31-11-750-053-A ** ON A/C NOT FOR ALL (1) Perform the dry-out procedure for the High Pressure Turbine (Ref. AMM TASK 71-00-00-700-013).
C. Make a selection of which Test Method is necessary.
(1) If you used Method 1 or Method 2, go to Para. 5.D.
(2) If you used Method 3 go to Para. 5.E.
(3) If original fan blade(s) is installed in original position with MWD unchanged and original balance weight, no vibration testing is required.
Subtask 72-31-11-750-058-A ** ON A/C NOT FOR ALL (1) If you used Method 1 or Method 2, go to Para. 5.D.
(2) If you used Method 3 go to Para. 5.E.
(3) If original fan blade(s) is installed in original position with MWD unchanged and original balance weight, no vibration testing is required.
D. Engine Vibration Test
(2) Make sure that the indications of operation are in the operation limits.
(3) Operate the engine at MIN IDLE for five minutes.
(4) Slowly increase the power of the engine that is not being tested, to 1.08 EPR minimum.
(5) Slowly increase the power of the test engine to 1.25 EPR for three minutes to let the test engine become thermally stable.
(6) Slowly increase the power of the test engine to 85 percent N1. If 85 percent N1 is prevented by noise control, increase to highest N1 allowed.
(7) Let the engine become stable for one minute and decrease to MIN IDLE.
(8) Decrease power of the engine that is not being tested to MIN IDLE.
(9) Keep both engines at MIN IDLE for five minutes.
(10) Do a shutdown by the Discontinued Start, Restart and Shutdown Procedure. (Ref. AMM TASK 71-00-00-710-018)
(11) Make sure that the vibration is within the limits listed in Engine Operation Limits, Guidelines and Special Procedures, section "Vibration Limits and Fan Trim Balance Vibration Guidelines" (Ref. AMM TASK 71-00-00-860-010).
Subtask 72-31-11-750-059-A ** ON A/C NOT FOR ALL CAUTION:
DURING GROUND RUNNING, CONCERN FOR FAN BLADE INTEGRITY PROHIBITS STABILISED ENGINE OPERATION IN THE FOLLOWING SPEED RANGE:
(1) Start both engines by the Normal Engine Automatic Start Procedure (Ref. AMM TASK 71-00-00-710-043) or Normal Engine Manual Start Procedure (Ref. AMM TASK 71-00-00-710-047). - FOR PRE-SCN17/V A/C: DO NOT STABILISE THE ENGINE BETWEEN 61% TO 74% N1 SPEED RANGE
- FOR POST-SCN17/V A/C: STABILISED OPERATION OF THE ENGINE BETWEEN APPROXIMATELY 60% TO 74% N1 SPEED RANGE (LIMITS ARE A FUNCTION OF OUTSIDE TEMPERATURE) WILL BE PROHIBITED BY THE EEC, AS THE SOFTWARE INCLUDES THE KEEP-OUT-ZONE FOR ON-GROUND, STATIC OPERATION.
(2) Make sure that the indications of operation are in the operation limits.
(3) Operate the engine at MIN IDLE for five minutes.
(4) Slowly increase the power of the engine that is not being tested, to 1.08 EPR minimum.
(5) Slowly increase the power of the test engine to 1.25 EPR for three minutes to let the test engine become thermally stable.
(6) Slowly increase the power of the test engine to 85 percent N1. If 85 percent N1 is prevented by noise control, increase to highest N1 allowed.
(7) Let the engine become stable for one minute and decrease to MIN IDLE.
(8) Decrease power of the engine that is not being tested to MIN IDLE.
(9) Keep both engines at MIN IDLE for five minutes.
(10) Do a shutdown by the Discontinued Start, Restart and Shutdown Procedure. (Ref. AMM TASK 71-00-00-710-018)
(11) Make sure that the vibration is within the limits listed in Engine Operation Limits, Guidelines and Special Procedures, section "Vibration Limits and Fan Trim Balance Vibration Guidelines" (Ref. AMM TASK 71-00-00-860-010).