DOC AIRBUS | AMM A320FRepair of the LP Compressor Fan Re-apply Coating - VRS1973 [IAE]
TASK 72-31-11-300-020-A
Repair of the LP Compressor Fan Re-apply Coating - VRS1973
This Task gives the procedure to re-apply the Dry Film Lubricant on the dovetails of the Low Pressure (LP) compressor fan blades.
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 72-31-11-941-087-A ** ON A/C NOT FOR ALL
Subtask 72-31-11-020-066-B ** ON A/C NOT FOR ALL
Subtask 72-31-11-942-084-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:45:02 UTC
Repair of the LP Compressor Fan Re-apply Coating - VRS1973
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobThis Task gives the procedure to re-apply the Dry Film Lubricant on the dovetails of the Low Pressure (LP) compressor fan blades.
NOTE: It is recommended to apply this task in conjunction with Re-apply the Dry Film Lubricant (VRS1974) on the Low Pressure (LP) compressor fan disk.
NOTE: The rapid re-lube system is the revised method of applying the dry film lubricant. A purpose-designed rapid re-lube kit contains the cleaning and applicator tools for the re-lubrication of one fan blade set and fan disk. The rapid re-lube kit is a disposable kit and must be disposed of accordingly after the fan blade set and fan disk have been re-lubricated.
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | MAT - WORK |
| 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.V01-338) | Cleaning solvent |
| (Material No.V02-099) | lint free cloth |
| (Material No.V04-016) | dry film lubricant |
| (Material No.V04-017) | rapid re-lube kit |
| REFERENCE | DESIGNATION |
|---|---|
| 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 72-31-11-300-019-A | Repair of the LP Compressor Fan Blade Chocking Pads - VRS1063 |
| TASK 72-31-11-400-010-C | Installation of the LP Compressor Fan Blades |
LP Compressor Fan BladesSubtask 72-31-11-941-087-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 ground support equipment into position.
(a) Put the ACCESS PLATFORM 1M(3 FT) in position to give access to the engine.
(b) 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 ground support equipment into position.
(a) Put the ACCESS PLATFORM 1M(3 FT) in position to give access to the engine.
(b) Put the MAT - WORK in position in the air intake cowl.
NOTE: Make sure that the red warning pennants of the workmat can be seen external of the aircraft.
NOTE: Make sure that the workmat has sufficient dimensions to give full protection to the lower half of the air intake cowl surface.
Subtask 72-31-11-020-066-B ** ON A/C NOT FOR ALL
A. Remove the LP compressor fan blade from the stage 1 fan disk assembly (Ref. AMM TASK 72-31-11-000-010).
Subtask 72-31-11-350-093-A ** ON A/C NOT FOR ALL Subtask 72-31-11-110-090-A ** ON A/C NOT FOR ALL C. Clean the dovetail of the fan blade.
V01-031 Acetone, Technical grade V01-124 Isopropyl Alcohol, Technical grade
(2) Remove the loose dry film lubricant (Material No.V04-016) . Use a rapid re-lube kit (Material No.V04-017) , fan blade cleaning pads. Regularly change the fan blade cleaning pad and use all 6 pads on a set of fan blades.
(3) Discard the used cleaning pads.
(4) Remove the grease. Use a lint free cloth (Material No.V02-099) made moist withV01-031 Acetone, Technical grade V01-124 Isopropyl Alcohol, Technical grade
Subtask 72-31-11-210-094-B ** ON A/C NOT FOR ALL CAUTION:
ONLY REMOVE THE LOOSE DRY FILM LUBRICANT. DO NOT REMOVE THE WELL-ADHERED DRY FILM LUBRICANT. ESPECIALLY, REMOVING IT MAY DAMAGE THE METCO COATING ON THE FAN BLADE ROOT IF THE FAN BLADE HAS THE COATING.
CAUTION:
DO NOT USE SCOTCHBRITE OR SIMILAR MATERIAL TO CLEAN THE FAN BLADE ROOT IF THE FAN BLADE HAS THE METCO COATING. IT WILL DAMAGE THE METCO COATING ON THE FAN BLADE ROOT.
(1) Remove the grease. Use a lint free cloth (Material No.V02-099) made moist with (2) Remove the loose dry film lubricant (Material No.V04-016) . Use a rapid re-lube kit (Material No.V04-017) , fan blade cleaning pads. Regularly change the fan blade cleaning pad and use all 6 pads on a set of fan blades.
(3) Discard the used cleaning pads.
(4) Remove the grease. Use a lint free cloth (Material No.V02-099) made moist with
D. Examine the root of the fan blade
(1) Do a visual inspection of the part (Ref. AMM TASK 72-31-11-200-010).
Subtask 72-31-11-350-094-A ** ON A/C NOT FOR ALL (1) Do a visual inspection of the part (Ref. AMM TASK 72-31-11-200-010).
E. Apply the dry film lubricant (Material No.V04-016)
(1) Assemble the fan blade applicator
(a) Use a rapid re-lube kit (Material No.V04-017) , fan blade applicator handle and paint pads. Remove the excess fibers from the pads. Assemble the fan blade applicator handle and pad.
(b) Loose fibers must be removed from the paint pads as the fibers may be applied to the blade root within the dry film lubricant coat. Fibers in the coating are to be avoided where possible.
(2) Prepare the dry film lubricant (Material No.V04-016) . Use the dry film lubricant (Material No.V04-016) . Use rapid re-lube kit (Material No.V04-017) , paint tray. Shake the container for 1 minute before opening. Remove any congealed dry film lubricant from the container. Pour a small amount of the dry film lubricant (Material No.V04-016) into the paint tray, approximate diameter 1.0 in. (25.4000 mm).
(5) Visually examine the dry film lubricant (Material No.V04-016) coating.
(a) Make sure the surface is evenly coated. If an area of AD is uncoated and the dry film lubricant (Material No.V04-016) is not dry, then apply the dry film lubricant (Material No.V04-016) to the fan blade root. Continue from step E(4). If an area of AD is uncoated and the dry film lubricant (Material No.V04-016) is dry, then the dry film lubricant (Material No.V04-016) must be removed. Use a lint free cloth (Material No.V02-099) made moist withV01-031 Acetone, Technical grade V01-124 Isopropyl Alcohol, Technical grade
(b) Do a check of the dry film lubricant (Material No.V04-016) coating for fibers after each coating. If the coating contains more than 5 fibers per 0.155 sqin (1 sqcm), then remove the dry film lubricant (Material No.V04-016) coating. Use a lint free cloth (Material No.V02-099) made moist withV01-031 Acetone, Technical grade V01-124 Isopropyl Alcohol, Technical grade
(c) Do a check of the fan blade root for drips. Remove all drips. Use a lint free cloth (Material No.V02-099) made moist withV01-031 Acetone, Technical grade V01-124 Isopropyl Alcohol, Technical grade
(6) Dry the dry film lubricant (Material No.V04-016) for a minimum of 10 minutes at room temperature or until touch dry, before turning over the fan blade to apply the dry film lubricant (Material No.V04-016) to the other side of the dovetail root.
(7) Turn the fan blade over in order to apply the dry film lubricant (Material No.V04-016) to the remaining fan blade dovetail roots.
(8) Apply the dry film lubricant (Material No.V04-016) to the remaining fan blade dovetail roots. Repeat step E (1) to step E (6).
(9) Cure the dry film lubricant (Material No.V04-016) for a minimum of 30 minutes at room temperature.
Subtask 72-31-11-350-095-A ** ON A/C NOT FOR ALL Subtask 72-31-11-420-120-B ** ON A/C NOT FOR ALL (1) Assemble the fan blade applicator
(a) Use a rapid re-lube kit (Material No.V04-017) , fan blade applicator handle and paint pads. Remove the excess fibers from the pads. Assemble the fan blade applicator handle and pad.
(b) Loose fibers must be removed from the paint pads as the fibers may be applied to the blade root within the dry film lubricant coat. Fibers in the coating are to be avoided where possible.
(2) Prepare the dry film lubricant (Material No.V04-016) . Use the dry film lubricant (Material No.V04-016) . Use rapid re-lube kit (Material No.V04-017) , paint tray. Shake the container for 1 minute before opening. Remove any congealed dry film lubricant from the container. Pour a small amount of the dry film lubricant (Material No.V04-016) into the paint tray, approximate diameter 1.0 in. (25.4000 mm).
NOTE: A small amount of the dry film lubricant (Material No.V04-016) must be poured into a paint tray in order to avoid the dry film lubricant (Material No.V04-016) drying quickly.
NOTE: Before topping up the paint tray with the dry film lubricant (Material No.V04-016) , any dried lubricant must be removed from the paint tray. If the dried dry film lubricant (Material No.V04-016) remains on the tray, the dried dry film lubricant (Material No.V04-016) can contaminate the dry film lubricant (Material No.V04-016) and cause inconsistencies of both coating quality and thickness.
CAUTION:
THE APPLICATOR PAINT PAD MUST BE REPLACED AFTER EVERY 8 SINGLE SIDED FAN BLADE ROOT APPLICATIONS, AS THE PAINT PAD FIBRES BECOME STICKY AND THE PAD DETERIORATES.
(3) Load the pad with the dry film lubricant (Material No.V04-016) for each root application. Make sure all the paint pad fibers are coated with dry film lubricant (Material No.V04-016) . Remove the excess dry film lubricant (Material No.V04-016) using the edge of the paint tray until the paint pad is an even dark gray color. Do not overload the paint pad as this will result in drips when the dry film lubricant (Material No.V04-016) is applied to the fan blade root. NOTE: If a full engine set (22 OFF) is to be repaired with the dry film lubricant (Material No.V04-016) , it is recommended to lay the fan blades on a flat surface, and to apply the dry film lubricant (Material No.V04-016) to one side of the fan blades. Once the coat is touch dry, the batch of fan blades is turned over and the dry film lubricant (Material No.V04-016) applied to the other side.
(4) Apply the dry film lubricant (Material No.V04-016) to the fan blade root. Put the applicator paint pad on one end of the fan blade root and press down gently. Apply the dry film lubricant (Material No.V04-016) along the fan blade root and back. For example, apply the dry film lubricant (Material No.V04-016) from the left-to-right of the fan blade root and then from right-to-left. Do not reload the paint pad during this application. (5) Visually examine the dry film lubricant (Material No.V04-016) coating.
(a) Make sure the surface is evenly coated. If an area of AD is uncoated and the dry film lubricant (Material No.V04-016) is not dry, then apply the dry film lubricant (Material No.V04-016) to the fan blade root. Continue from step E(4). If an area of AD is uncoated and the dry film lubricant (Material No.V04-016) is dry, then the dry film lubricant (Material No.V04-016) must be removed. Use a lint free cloth (Material No.V02-099) made moist with
(b) Do a check of the dry film lubricant (Material No.V04-016) coating for fibers after each coating. If the coating contains more than 5 fibers per 0.155 sqin (1 sqcm), then remove the dry film lubricant (Material No.V04-016) coating. Use a lint free cloth (Material No.V02-099) made moist with
(c) Do a check of the fan blade root for drips. Remove all drips. Use a lint free cloth (Material No.V02-099) made moist with
(6) Dry the dry film lubricant (Material No.V04-016) for a minimum of 10 minutes at room temperature or until touch dry, before turning over the fan blade to apply the dry film lubricant (Material No.V04-016) to the other side of the dovetail root.
(7) Turn the fan blade over in order to apply the dry film lubricant (Material No.V04-016) to the remaining fan blade dovetail roots.
(8) Apply the dry film lubricant (Material No.V04-016) to the remaining fan blade dovetail roots. Repeat step E (1) to step E (6).
(9) Cure the dry film lubricant (Material No.V04-016) for a minimum of 30 minutes at room temperature.
G. Install the LP compressor fan blade on the stage 1 fan disk assembly (Ref. AMM TASK 72-31-11-400-010).
5. Close-upSubtask 72-31-11-942-084-A ** ON A/C NOT FOR ALL
A. Remove the ground support equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the workmat from the air intake cowl.
(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) Remove the workmat from the air intake cowl.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).