DOC AIRBUS | AMM A320FDetailed Inspection and Relubrication of Fan Blade Dovetails, Midspan Shrouds, Retainers, Spacers, Dampers and Fan Disk Dovetail Slots [CFMI]
TASK 72-21-00-210-004-A
Detailed Inspection and Relubrication of Fan Blade Dovetails, Midspan Shrouds, Retainers, Spacers, Dampers and Fan Disk Dovetail Slots
Refer to the MPD TASK: 722000-C2
DETAILED INSPECTION AND RELUBRICATION OF FAN BLADE DOVETAILS, MIDSPAN SHROUDS, RETAINERS, SPACERS, DAMPERS AND FAN DISC DOVETAIL SLOTS
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 72-21-00-941-066-A ** ON A/C NOT FOR ALL
Subtask 72-21-00-210-054-A ** ON A/C NOT FOR ALL
Subtask 72-21-00-640-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:33:40 UTC
Detailed Inspection and Relubrication of Fan Blade Dovetails, Midspan Shrouds, Retainers, Spacers, Dampers and Fan Disk Dovetail Slots
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobRefer to the MPD TASK: 722000-C2
DETAILED INSPECTION AND RELUBRICATION OF FAN BLADE DOVETAILS, MIDSPAN SHROUDS, RETAINERS, SPACERS, DAMPERS AND FAN DISC DOVETAIL SLOTS
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | BRUSH - BRISTLED, SOFT |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP1039) | acetone |
| (Material No.CP1041) | isopropyl alcohol |
| (Material No.CP2011) | stoddard solvent |
| (Material No.CP2171) | Molykote U-n |
| (Material No.CP2470) | TURCO 5948 DPM |
| (Material No.CP2559) | ardrox 552 |
| (Material No.CP2560) | turco ind 79 |
| (Material No.CP2566) | mag-chem teksol |
| (Material No.CP2584) | degreasol 99 R |
| (Material No.CP2656) | mag-chem skysol |
| (Material No.CP5062) | MoS_2 dry film lubricant |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 72-21-00-000-003-A | Removal of the Fan Rotor Blades |
| TASK 72-21-00-210-002-A | Inspect Fan Rotor Blades Removed from the Fan Disk |
| TASK 72-21-00-210-003-A | Inspection/Check of the Stage 1 Booster Vane, Fan Disk, Fan Blade Spacers, Retainers and Dampers and Shims |
| TASK 72-21-00-400-003-A | Installation of the Fan Rotor Blades |
Fan Blade and Disk Areas to be Inspected after Cleaning for Removal of Lubricant from Pressure FacesSubtask 72-21-00-941-066-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 72-21-00-020-054-A ** ON A/C NOT FOR ALL Subtask 72-21-00-110-052-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).
C. Clean fan blade dovetails:
(1) Clean the fan blade dovetails and midspan shroud, retainers, spacers, dampers and the fan disk dovetail slots with isopropyl alcohol (Material No.CP1041) or acetone (Material No.CP1039) or stoddard solvent (Material No.CP2011) or TURCO 5948 DPM (Material No.CP2470) or ardrox 552 (Material No.CP2559) or turco ind 79 (Material No.CP2560) or mag-chem teksol (Material No.CP2566) or degreasol 99 R (Material No.CP2584) or mag-chem skysol (Material No.CP2656) . A BRUSH - BRISTLED, SOFT must be used if necessary to remove dirt built up.
4. Procedure(1) Clean the fan blade dovetails and midspan shroud, retainers, spacers, dampers and the fan disk dovetail slots with isopropyl alcohol (Material No.CP1041) or acetone (Material No.CP1039) or stoddard solvent (Material No.CP2011) or TURCO 5948 DPM (Material No.CP2470) or ardrox 552 (Material No.CP2559) or turco ind 79 (Material No.CP2560) or mag-chem teksol (Material No.CP2566) or degreasol 99 R (Material No.CP2584) or mag-chem skysol (Material No.CP2656) . A BRUSH - BRISTLED, SOFT must be used if necessary to remove dirt built up.
Subtask 72-21-00-210-054-A ** ON A/C NOT FOR ALL
A. Inspect the fan blade dovetail and midspan shrouds hard coatings and the fan disk slots (Ref. AMM TASK 72-21-00-210-002) and (Ref. AMM TASK 72-21-00-210-003).
5. Close-upSubtask 72-21-00-640-050-A ** ON A/C NOT FOR ALL
A. Apply MoS_2 dry film lubricant (Material No.CP5062) or Molykote U-n (Material No.CP2171) on the disk slots, spacers, retainers, dampers, blade dovetails and midspan shrouds before the re-installion of blades. Lubricant should be applied liberally to all dovetail and slot pressure faces. Brush application is preferred. Allow the lubricant to dry to a dull opaque finish before installation of blades in disk slots.
Subtask 72-21-00-420-060-A ** ON A/C NOT FOR ALL Subtask 72-21-00-410-059-A ** ON A/C NOT FOR ALL C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).