DOC AIRBUS | AMM A320FRepair the Stage 1 Fan Disk Touch up Coating - VRS1149 [IAE]
TASK 72-31-12-300-011-A
Repair the Stage 1 Fan Disk Touch up Coating - VRS1149
This TASK is for V2500-ALL engines.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 72-31-12-941-055-A ** ON A/C NOT FOR ALL
Subtask 72-31-12-020-053-B ** ON A/C NOT FOR ALL
Subtask 72-31-12-942-053-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:45:06 UTC
Repair the Stage 1 Fan Disk Touch up Coating - VRS1149
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobThis TASK is for V2500-ALL engines.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | MAT - WORK |
| No specific | AR | MIRROR - INSPECTION |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V01-031) | Acetone, Technical grade |
| (Material No.V01-124) | Isopropyl Alcohol, Technical grade |
| (Material No.V02-018) | brush |
| (Material No.V10-005) | high load dry lubricant |
| (Material No.V10-106) | bonded lubricant |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 72-31-11-000-010-B | Removal of the LP Compressor Fan Blades |
| TASK 72-31-11-400-010-C | Installation of the LP Compressor Fan Blades |
| TASK 72-31-12-300-011-A | Repair the Stage 1 Fan Disk Touch up Coating - VRS1149 |
Touch up Coating - Fan DiskSubtask 72-31-12-941-055-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).
(4) Put the support equipment into position
(a) Put the MAT - WORK in position in the air intake cowl
4. Procedure(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).
(4) Put the support equipment into position
(a) Put the MAT - WORK in position in the air intake cowl
NOTE: Make sure that the red warning pennants on the workmat can be seen external to the aircraft. Make sure that the workmat has sufficient dimensions to give full protection to the lower half of the air intake cowl.
Subtask 72-31-12-020-053-B ** ON A/C NOT FOR ALL
A. Remove the stage 1 fan blade from the stage 1 fan disk assembly (Ref. AMM TASK 72-31-11-000-010).
Subtask 72-31-12-350-051-A ** ON A/C NOT FOR ALL B. Clean the missing coat areas on the dovetail slot.
(1) Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist with cleanV01-031 Acetone, Technical grade V01-124 Isopropyl Alcohol, Technical grade
Subtask 72-31-12-370-050-A ** ON A/C NOT FOR ALL (1) Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist with clean
C. Apply the dry film lubricant on the dovetail slot of the disk.
(1) Touch up the dry film lubricant to the missing coat areas with a clean brush (Material No.V02-018) , use high load dry lubricant (Material No.V10-005) or bonded lubricant (Material No.V10-106) .
(2) Apply three coats of the dry lubricant to a total thickness of between 0.001 and 0.002 in. (0.025 and 0.051 mm) to surface BJ.
(3) Air dry as follows:
(a) If V10-005 multi purpose high load dry lubricant was used, dry for 20 minutes.
(b) If V10-106 bonded lubricant was used, dry for 30 minutes.
Subtask 72-31-12-220-051-A ** ON A/C NOT FOR ALL (1) Touch up the dry film lubricant to the missing coat areas with a clean brush (Material No.V02-018) , use high load dry lubricant (Material No.V10-005) or bonded lubricant (Material No.V10-106) .
(2) Apply three coats of the dry lubricant to a total thickness of between 0.001 and 0.002 in. (0.025 and 0.051 mm) to surface BJ.
(3) Air dry as follows:
(a) If V10-005 multi purpose high load dry lubricant was used, dry for 20 minutes.
(b) If V10-106 bonded lubricant was used, dry for 30 minutes.
D. Visually examine the dry film lubricant on the dovetail slot of the disk. Use a MIRROR - INSPECTION.
(1) The layer must be smooth and bonded correctly to the surface of the part.
(2) The layer must not have any cracks or flakes.
Subtask 72-31-12-420-053-B ** ON A/C NOT FOR ALL Subtask 72-31-12-350-052-A ** ON A/C NOT FOR ALL (1) The layer must be smooth and bonded correctly to the surface of the part.
(2) The layer must not have any cracks or flakes.
F. Identify the repair
(1) A log book entry is necessary when you have touched up the slot surface of over 50 percent. Write VRS1149 in the engine log book.
(2) At the next shop visit the disk must be repaired in accordance with VRS1149 (Ref. AMM TASK 72-31-12-300-011).
5. Close-up(1) A log book entry is necessary when you have touched up the slot surface of over 50 percent. Write VRS1149 in the engine log book.
(2) At the next shop visit the disk must be repaired in accordance with VRS1149 (Ref. AMM TASK 72-31-12-300-011).
Subtask 72-31-12-942-053-A ** ON A/C NOT FOR ALL
A. Remove the support equipment.
(1) Remove the workmat.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
(1) Remove the workmat.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).