DOC AIRBUS | AMM A320FRemoval of the Left Thrust Reverser Thermal Insulation Blankets [PW11]
TASK 78-32-41-000-803-A
Removal of the Left Thrust Reverser Thermal Insulation Blankets
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 78-32-41-941-086-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:33:14 UTC
Removal of the Left Thrust Reverser Thermal Insulation Blankets
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING:
ALWAYS USE APPLICABLE GLOVES TO TOUCH HOT PARTS. HOT PARTS CAN CAUSE INJURY TO PERSONS.
WARNING:
WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.
ZONE: 400
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | COVER - PROTECTION |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 437AL, 438AR, 451AL | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 447AL, 448AR, 461AL | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-00-00-860-833-A | Procedure to Prevent Engine Motoring |
| TASK 71-13-00-010-802-A | Opening of the Fan Cowl Doors |
| TASK 78-30-00-040-805-A | Deactivation of the Thrust Reverser System for Ground Maintenance |
| TASK 78-32-42-000-802-A | Removal of the Left Thrust-Reverser Seals |
| TASK 78-32-43-000-805-A | Removal of the Thrust Reverser Bifurcation Latch Receiver |
| TASK 78-36-00-010-802-A | Opening of the Thrust Reverser Cowl-Doors |
Left Thrust Reverser Thermal Insulation BlanketsSubtask 78-32-41-941-086-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
Subtask 78-32-41-010-120-A ** ON A/C NOT FOR ALL (1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.
Subtask 78-32-41-040-098-A ** ON A/C NOT FOR ALL (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.
C. Deactivation of the Thrust Reverser for Ground Maintenance
Subtask 78-32-41-010-121-A ** ON A/C NOT FOR ALL WARNING:
YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
(1) Do the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-805). D. Get Access
(1) Open the left thrust reverser cowl-door (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
- 451AL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
- 461AL.
4. Procedure(1) Open the left thrust reverser cowl-door (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
- 451AL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
- 461AL.
CAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
CAUTION:
DO NOT LET THE THERMAL INSULATION BLANKETS BECOME WET. FLUIDS CAN GO INTO THE VENT HOLES OF THE BLANKETS AND MAKE THE INSULATION UNSATISFACTORY.
CAUTION:
BE CAREFUL WHEN YOU MOVE THE THERMAL INSULATION BLANKETS. IF YOU DO NOT HOLD THE BLANKETS CORRECTLY, THEY CAN FOLD BECAUSE OF THEIR OWN WEIGHT.
DO NOT STEP ON OR PUT OBJECTS ON THE BLANKETS.
DO NOT PUT THE BLANKETS ON SURFACES THAT CAN CAUSE DAMAGE.
HOLD THE BLANKETS ON THEIR THICKEST PARTS.
IF YOU DO NOT OBEY THESE INSTRUCTIONS, DAMAGE TO THE BLANKETS CAN OCCUR.
Subtask 78-32-41-020-064-A ** ON A/C NOT FOR ALL Subtask 78-32-41-020-065-A ** ON A/C NOT FOR ALL B. Removal of the covers on the vents on the upper forward barrel blanket (1)
(1) Remove the two retainers (3) and, if installed, the washers that attach the zone vent deflector (5) on the zone vent tube on the left upper forward barrel blanket (1).
(2) Remove the zone vent deflector (5).
(3) Remove the two retainers (3) and, if installed, the washers that attach the zone vent deflector assembly (6) on the zone vent tube on the upper forward barrel blanket (1).
(4) Remove the zone vent deflector assembly (6).
(5) Remove the two retainers (3) and, if installed, the washers that attach the zone vent cover (7) on the zone vent tube on the left upper forward barrel blanket (1).
(6) Remove the zone vent cover (7).
Subtask 78-32-41-020-066-A ** ON A/C NOT FOR ALL (1) Remove the two retainers (3) and, if installed, the washers that attach the zone vent deflector (5) on the zone vent tube on the left upper forward barrel blanket (1).
(2) Remove the zone vent deflector (5).
(3) Remove the two retainers (3) and, if installed, the washers that attach the zone vent deflector assembly (6) on the zone vent tube on the upper forward barrel blanket (1).
(4) Remove the zone vent deflector assembly (6).
(5) Remove the two retainers (3) and, if installed, the washers that attach the zone vent cover (7) on the zone vent tube on the left upper forward barrel blanket (1).
(6) Remove the zone vent cover (7).
C. Removal of the upper forward barrel blanket (1) and upper bifurcation bumper blanket (2)
(1) Remove the bolt (10), the bumper pad (9) and the 12 washers (8) from the left upper bifurcation bumper blanket (2).
(3) Remove the upper bifurcation bumper blanket (2).
(4) Remove the 21 retainers (3) and, if installed, the washers that attach the upper forward barrel blanket (1) to the inner fixed structure of the thrust reverser.
(5) Move the edges of the upper forward barrel blanket (1) from under the retainers for the forward and top seals.
(6) Remove the upper forward barrel blanket (1).
Subtask 78-32-41-020-067-A ** ON A/C NOT FOR ALL (1) Remove the bolt (10), the bumper pad (9) and the 12 washers (8) from the left upper bifurcation bumper blanket (2).
NOTE: Keep the bolt (10), the bumper pad (9) and the 12 washers (8) for installation. Record the number and location of the washers (8).
(2) Remove the four retainers (3) and, if installed, the washers that attach the upper bifurcation bumper blanket (2) to the upper forward barrel blanket (1). (3) Remove the upper bifurcation bumper blanket (2).
(4) Remove the 21 retainers (3) and, if installed, the washers that attach the upper forward barrel blanket (1) to the inner fixed structure of the thrust reverser.
(5) Move the edges of the upper forward barrel blanket (1) from under the retainers for the forward and top seals.
(6) Remove the upper forward barrel blanket (1).
D. Removal of the upper aft barrel blanket (11)
(1) Remove the bolt (10), the bumper pad (9), and 12 washers (8) from the upper aft barrel blanket (11).
(3) Remove the 29 retainers (3) and, if installed, the washers that attach the left upper aft barrel blanket (11) to the inner fixed structure of the thrust reverser.
(4) Move the top edges of the upper aft barrel blanket (11) from under the retainers for pylon seal support.
(5) Remove the upper aft barrel blanket (11).
Subtask 78-32-41-020-068-A ** ON A/C NOT FOR ALL (1) Remove the bolt (10), the bumper pad (9), and 12 washers (8) from the upper aft barrel blanket (11).
NOTE: Keep the bolt (10), the bumper pad (9) and the 12 washers (8) for installation. Record the number and location of the washers (8).
(2) Remove the seven retainers (12) and around the ACOC exhaust duct. (3) Remove the 29 retainers (3) and, if installed, the washers that attach the left upper aft barrel blanket (11) to the inner fixed structure of the thrust reverser.
(4) Move the top edges of the upper aft barrel blanket (11) from under the retainers for pylon seal support.
(5) Remove the upper aft barrel blanket (11).
E. Removal of the aft latch beam blanket (13)
(1) Remove the six retainers (3) and, if installed, the washers that attach the aft latch beam blanket (13) to the inner fixed structure of the thrust reverser.
(2) Move the edge of the left aft latch beam blanket (13) from under the retainer for the aft seal.
(3) Remove the aft latch beam blanket (13).
Subtask 78-32-41-020-069-A ** ON A/C NOT FOR ALL Subtask 78-32-41-020-070-A ** ON A/C NOT FOR ALL (1) Remove the six retainers (3) and, if installed, the washers that attach the aft latch beam blanket (13) to the inner fixed structure of the thrust reverser.
(2) Move the edge of the left aft latch beam blanket (13) from under the retainer for the aft seal.
(3) Remove the aft latch beam blanket (13).
G. Removal of the covers on the vents on the lower forward barrel blanket
(1) Remove the two retainers (3) and, if installed, the washers that attach the zone vent cover (14) on the zone vent tube on the lower forward barrel blanket (17) or (23).
(2) Remove the zone vent covers (14).
(3) Remove the two retainers (3) and, if installed, the washers that attach the zone vent cover (15) on the zone vent tube on the lower forward barrel blanket (17) or (23).
(4) Remove the zone vent covers (15).
PRE SB GRAA320NEO-A-78-30-0006-00001-930A-D
(5) Remove the two retainers (3), the two washers (22), and, if installed, the washers that attach the zone vent deflector assembly (16) on the zone vent tube on the lower forward barrel blanket (17).
(6) Remove the zone vent deflector assembly (16).
END OF PRE SB GRAA320NEO-A-78-30-0006-00001-930A-D
Subtask 78-32-41-020-071-A ** ON A/C NOT FOR ALL (1) Remove the two retainers (3) and, if installed, the washers that attach the zone vent cover (14) on the zone vent tube on the lower forward barrel blanket (17) or (23).
(2) Remove the zone vent covers (14).
(3) Remove the two retainers (3) and, if installed, the washers that attach the zone vent cover (15) on the zone vent tube on the lower forward barrel blanket (17) or (23).
(4) Remove the zone vent covers (15).
PRE SB GRAA320NEO-A-78-30-0006-00001-930A-D
(5) Remove the two retainers (3), the two washers (22), and, if installed, the washers that attach the zone vent deflector assembly (16) on the zone vent tube on the lower forward barrel blanket (17).
(6) Remove the zone vent deflector assembly (16).
END OF PRE SB GRAA320NEO-A-78-30-0006-00001-930A-D
H. Removal of the lower forward barrel blanket
(1) Remove the bolt (10), the bumper pad (9) and the 12 washers (8) from the lower forward barrel blanket (17) or (23).
PRE SB GRAA320NEO-A-78-30-0006-00001-930A-D
(2) Removal of the lower forward barrel blanket (17):
(a) Remove the 23 retainers (3) and, if installed, the washers that attach the lower forward barrel blanket (17) to the inner fixed structure of the thrust reverser.
(b) Move the edge of the lower forward barrel blanket (17) from under the retainers for the forward retainers.
(c) Remove the lower forward barrel blanket (17).
END OF PRE SB GRAA320NEO-A-78-30-0006-00001-930A-D
POST SB GRAA320NEO-A-78-30-0006-00001-930A-D
(3) Removal of the lower forward barrel blanket (23):
(a) Remove the 24 retainers (3) and, if installed, the washers that attach the lower forward barrel blanket (23) to the inner fixed structure of the thrust reverser.
(b) Move the edge of the lower forward barrel blanket (23) from under the retainers for the forward retainers.
(c) Remove the lower forward barrel blanket (23).
END OF POST SB GRAA320NEO-A-78-30-0006-00001-930A-D
Subtask 78-32-41-020-072-A ** ON A/C NOT FOR ALL (1) Remove the bolt (10), the bumper pad (9) and the 12 washers (8) from the lower forward barrel blanket (17) or (23).
NOTE: Keep the bolt (10), the bumper pad (9) and the 12 washers (8) for installation. Record the number and location of the washers (8).
PRE SB GRAA320NEO-A-78-30-0006-00001-930A-D
(2) Removal of the lower forward barrel blanket (17):
(a) Remove the 23 retainers (3) and, if installed, the washers that attach the lower forward barrel blanket (17) to the inner fixed structure of the thrust reverser.
(b) Move the edge of the lower forward barrel blanket (17) from under the retainers for the forward retainers.
(c) Remove the lower forward barrel blanket (17).
END OF PRE SB GRAA320NEO-A-78-30-0006-00001-930A-D
POST SB GRAA320NEO-A-78-30-0006-00001-930A-D
(3) Removal of the lower forward barrel blanket (23):
(a) Remove the 24 retainers (3) and, if installed, the washers that attach the lower forward barrel blanket (23) to the inner fixed structure of the thrust reverser.
(b) Move the edge of the lower forward barrel blanket (23) from under the retainers for the forward retainers.
(c) Remove the lower forward barrel blanket (23).
END OF POST SB GRAA320NEO-A-78-30-0006-00001-930A-D
I. Removal of the forward latch beam blanket (18)
(1) Remove the nut (19) and washer (20) that attach the left forward latch beam blanket (18) to the panel.
(2) Remove the three retainers (3) and, if installed, the washers that attach the left forward latch beam blanket (18) to the inner fixed structure of the thrust reverser.
Subtask 78-32-41-020-073-A ** ON A/C NOT FOR ALL (1) Remove the nut (19) and washer (20) that attach the left forward latch beam blanket (18) to the panel.
(2) Remove the three retainers (3) and, if installed, the washers that attach the left forward latch beam blanket (18) to the inner fixed structure of the thrust reverser.
J. Removal of the lower aft barrel blanket (21)
(1) Remove the 14 retainers (3) and, if installed, the washers that attach the lower aft barrel blanket (21) to the inner fixed structure of the thrust reverser.
(2) Move the edge of the lower aft barrel blanket (21) out of the blanket retainer.
(3) Remove the lower aft barrel blanket (21).
Subtask 78-32-41-860-080-A ** ON A/C NOT FOR ALL (1) Remove the 14 retainers (3) and, if installed, the washers that attach the lower aft barrel blanket (21) to the inner fixed structure of the thrust reverser.
(2) Move the edge of the lower aft barrel blanket (21) out of the blanket retainer.
(3) Remove the lower aft barrel blanket (21).
K. Installation of the protection covers
CAUTION:
INSTALL PROTECTION COVERS ON ALL THE OPENINGS IMMEDIATELY TO PREVENT DAMAGE TO THE ENGINE.
(1) Make sure that you install COVER - PROTECTION as necessary to prevent damage to the engine.