DOC AIRBUS | AMM A320FRepair of the LP Compressor Fan Blade Chocking Pads - VRS1063 [IAE]
TASK 72-31-11-300-019-A
Repair of the LP Compressor Fan Blade Chocking Pads - VRS1063
This task gives the procedure for the replacement of the LP Compressor fan blade choking pads.
This task includes two alternative procedures to repair the LP Compressor fan blade chocking pads.
PRE SBE 72-0260 (assembly A) - adhesive application
POST SBE 72-0260 (assembly B) - double sided tape application
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 72-31-11-941-070-A ** ON A/C NOT FOR ALL
Subtask 72-31-11-020-055-B ** ON A/C NOT FOR ALL
PRE SBE 72-0260 (assembly A)
(1) Make rough the bonding areas of the chocking pad on the blade. Use scotch brite (Material No.V05-126) .
(2) Swab degrease the blade and bonding areas of the chocking pad. UseV01-124 Isopropyl Alcohol, Technical grade
END OF PRE SBE 72-0260 (assembly A)
Subtask 72-31-11-350-071-A ** ON A/C NOT FOR ALL
PRE SBE 72-0260 (assembly A)
(1) Apply a thin layer of primer (Material No.V08-014) to all the prepared surfaces and let it dry for 30 minutes.
(2) Apply cold curing silicone (Material No.V08-013) from the tube to the mating surfaces with an applicator nozzle. Apply the necessary thickness with the use for an applicable hand tool such as a TROWEL - SMALL.
(3) Assemble the component before there is a skin on the surface of the compound and not longer than three minutes maximum. Use finger pressure to hold the pads in position until the compound is seen all around the pads.
(4) UseV02-001 adhesive tape (masking)
END OF PRE SBE 72-0260 (assembly A)
Subtask 72-31-11-220-057-A ** ON A/C NOT FOR ALL
POST SBE 72-0260 (assembly B)
V01-124 Isopropyl Alcohol, Technical grade
(2) ApplyV02-271 adhesive tape (double sided)
(3) The adhesive tape on the pad is to be trimmed flush. It is permissible to stick out within 0.04 in. (1.0 mm) all round.
END OF POST SBE 72-0260 (assembly B)
Subtask 72-31-11-350-092-A ** ON A/C NOT FOR ALL
Subtask 72-31-11-942-068-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:44:58 UTC
Repair of the LP Compressor Fan Blade Chocking Pads - VRS1063
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 for the replacement of the LP Compressor fan blade choking pads.
This task includes two alternative procedures to repair the LP Compressor fan blade chocking pads.
PRE SBE 72-0260 (assembly A) - adhesive application
POST SBE 72-0260 (assembly B) - double sided tape application
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | AR | MAT - WORK |
| No specific | AR | TROWEL - SMALL |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V01-124) | Isopropyl Alcohol, Technical grade |
| (Material No.V01-438) | solvent |
| (Material No.V02-001) | adhesive tape (masking) |
| (Material No.V02-271) | adhesive tape (double sided) |
| (Material No.V05-126) | scotch brite |
| (Material No.V08-013) | cold curing silicone |
| (Material No.V08-014) | primer |
| 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 |
Replace the Front and Rear Chocking Pads, assembly ASubtask 72-31-11-941-070-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 in position.
(a) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position to give access to the engine for the repair task.
(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 support equipment in position.
(a) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position to give access to the engine for the repair task.
(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. Make sure the workmat has sufficient dimensions to give full protection to the lower half of the air intake cowl surface.
Subtask 72-31-11-020-055-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 72-31-11-350-088-A ** ON A/C NOT FOR ALL B. Remove the chocking pads from the fan blade.
(1) Remove the front and/or rear chocking pads from the fan blade using hand methods.
Subtask 72-31-11-350-089-A ** ON A/C NOT FOR ALL (1) Remove the front and/or rear chocking pads from the fan blade using hand methods.
NOTE: Take extreme care not to cause damage to the fan blade.
C. Remove adhesive residue from the chocking pads and the fan blade.
(1) Remove adhesive residue from the chocking pads and the fan blade using hand methods.
Subtask 72-31-11-210-091-A ** ON A/C NOT FOR ALL (1) Remove adhesive residue from the chocking pads and the fan blade using hand methods.
NOTE: Take extreme care not to cause damage to the chocking pads and fan blade.
D. Visually examine the chocking pads for damage.
(1) Any damage that changes thickness of the chocking pads is not allowed.
Subtask 72-31-11-350-070-A ** ON A/C NOT FOR ALL (1) Any damage that changes thickness of the chocking pads is not allowed.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
E. Prepare the blade and the chocking pad bonding surface, assembly A. PRE SBE 72-0260 (assembly A)
(1) Make rough the bonding areas of the chocking pad on the blade. Use scotch brite (Material No.V05-126) .
(2) Swab degrease the blade and bonding areas of the chocking pad. Use
END OF PRE SBE 72-0260 (assembly A)
CAUTION:
YOU MUST NOT EAT OR SMOKE AT LOCATIONS WHERE THESE MATERIALS ARE USED. THEY SHOULD BE PREPARED AND USED IN AREA OF GOOD AIRFLOW.
CAUTION:
AFTER PREPARATION, THE MATING SURFACES MUST BE FULLY CLEANED AND MUST NOT BE TOUCHED BY HAND, TO PREVENT CONTAMINATION.
CAUTION:
BONDING MUST BE DONE IMMEDIATELY AFTER PREPARATION OF THE SURFACE.
F. Bond the chocking pads to the fan blade, assembly A. PRE SBE 72-0260 (assembly A)
(1) Apply a thin layer of primer (Material No.V08-014) to all the prepared surfaces and let it dry for 30 minutes.
(2) Apply cold curing silicone (Material No.V08-013) from the tube to the mating surfaces with an applicator nozzle. Apply the necessary thickness with the use for an applicable hand tool such as a TROWEL - SMALL.
(3) Assemble the component before there is a skin on the surface of the compound and not longer than three minutes maximum. Use finger pressure to hold the pads in position until the compound is seen all around the pads.
(4) Use
END OF PRE SBE 72-0260 (assembly A)
G. Visually and dimensionally examine the bonded chocking pads, assembly A.
PRE SBE 72-0260 (assembly A)
END OF PRE SBE 72-0260 (assembly A)
Subtask 72-31-11-350-090-A ** ON A/C NOT FOR ALL PRE SBE 72-0260 (assembly A)
END OF PRE SBE 72-0260 (assembly A)
H. Prepare the LPC Rotor blade for attaching the chocking pads, assembly B.
POST SBE 72-0260 (assembly B)
(1) Locally swab degrease the bonding area. UseV01-124 Isopropyl Alcohol, Technical grade
(2) Abrade bond area with scotch brite (Material No.V05-126) soaked in solvent (Material No.V01-438) (Area AE).
(3) Swab degrease the bonding area and allow to evaporate. UseV01-124 Isopropyl Alcohol, Technical grade
END OF POST SBE 72-0260 (assembly B)
Subtask 72-31-11-350-091-A ** ON A/C NOT FOR ALL POST SBE 72-0260 (assembly B)
(1) Locally swab degrease the bonding area. Use
(2) Abrade bond area with scotch brite (Material No.V05-126) soaked in solvent (Material No.V01-438) (Area AE).
(3) Swab degrease the bonding area and allow to evaporate. Use
END OF POST SBE 72-0260 (assembly B)
CAUTION:
THE BACKING PAPER OF THE DOUBLE SIDED ADHESIVE TAPE MUST BE STILL INTACT UNTIL IT IS ATTACHED TO THE FAN BLADE.
I. Prepare the chocking pad, assembly B. POST SBE 72-0260 (assembly B)
NOTE: If the chocking pad is to be replaced, this procedure do not need to be done.
(1) Swab degrease the surface E of the chocking pad. Use (2) Apply
(3) The adhesive tape on the pad is to be trimmed flush. It is permissible to stick out within 0.04 in. (1.0 mm) all round.
END OF POST SBE 72-0260 (assembly B)
J. Attach the chocking pad to the fan blade, assembly B.
POST SBE 72-0260 (assembly B)
(1) Remove the backing paper from chocking pad.
(2) Installation of the pad
(3) Apply light hand pressure for one minute.
END OF POST SBE 72-0260 (assembly B)
Subtask 72-31-11-220-054-A ** ON A/C NOT FOR ALL POST SBE 72-0260 (assembly B)
(1) Remove the backing paper from chocking pad.
(2) Installation of the pad
CAUTION:
DO NOT TOUCH ADHESIVE TAPE.
(a) Put the pad on the blade root. (3) Apply light hand pressure for one minute.
NOTE: Once in position the pad cannot be moved or its position adjusted.
(4) Lightly twist the pad to ensure full adhesion to blade and backing plate. END OF POST SBE 72-0260 (assembly B)
K. Visually and dimensionally examine the bonded chocking pads, assembly B.
POST SBE 72-0260 (assembly B)
END OF POST SBE 72-0260 (assembly B)
Subtask 72-31-11-420-057-B ** ON A/C NOT FOR ALL 5. Close-upPOST SBE 72-0260 (assembly B)
END OF POST SBE 72-0260 (assembly B)
Subtask 72-31-11-942-068-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).