Installation of the Left Thrust Reverser Thermal Insulation Blankets [PW11]

TASK 78-32-41-400-803-A
Installation 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: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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 Job
Self 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	Torque wrench: range to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )
No specific	Torque wrench: range to between 27 and 24 lbf.in (0.31 and 0.27 m.daN )
No specific	Torque wrench: range to between 130 and 117 lbf.in (1.47 and 1.32 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.PU4-0010)	base primer
(Material No.PU4-0011)	activator
(Material No.PU4-0012)	thinner
(Material No.PU5-0002)	anti-seize compound
(Material No.PU5-0005)	anti-seize compound

C. Work Zones and Access Panels

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

D. Referenced Information

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 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-32-42-400-802-A	Installation of the Left Thrust-Reverser Seals
TASK 78-32-43-400-805-A	Installation of the Thrust Reverser Bifurcation Latch Receiver
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
Left Thrust Reverser Thermal Insulation Blankets

3. Job Set-up
Subtask 78-32-41-941-087-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 78-32-41-010-122-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (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) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

Subtask 78-32-41-040-099-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser System for Ground Maintenance

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) Make sure that you did the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 78-32-41-010-123-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Make sure that left the thrust reverser cowl-door is open (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

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

CAUTION: MAKE SURE THE THERMAL INSULATION BLANKETS ARE FLAT ON THE SURFACE OF THE INNER FIXED STRUCTURE. LARGE GAPS UNDER THE BLANKETS CAN MAKE THE INSULATION UNSATISFACTORY, WHICH CAN CAUSE DAMAGE TO THE EQUIPMENT.

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 78-32-41-860-081-A ** ON A/C NOT FOR ALL

A. Removal of the Protection Covers

CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.

(1) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.

Subtask 78-32-41-420-063-A ** ON A/C NOT FOR ALL

B. Installation of the Lower Aft Barrel Blanket
(1) Put the lower aft barrel blanket (21) on the inner fixed structure of the left thrust reverser.
(2) Make sure the bottom edge of the blanket (21) is under the blanket retainer.
(3) Make sure all other edges are between 0.00 in. (0.00 mm) and 0.15 in. (3.81 mm) from the adjacent structures on the inner fixed structure.
(4) Attach the lower aft barrel blanket (21) to the inner fixed structure with the 14 retainers (3).
(5) TORQUE the 14 retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

NOTE: If the retainer (3) is not tight against the blanket after you tighten it, put one washer under the retainer (3).

Subtask 78-32-41-420-064-A ** ON A/C NOT FOR ALL

C. Installation of the Forward Latch Beam Blanket
(1) Put the forward latch beam blanket (18) on the inner fixed structure.
(2) Make sure that the forward edge of the blanket (18) is under the retainer for the forward seal.
(3) Make sure that all other edges of the blanket (18) are between 0.00 in. (0.00 mm) and 0.15 in. (3.81 mm) from the adjacent structures on the inner fixed structure.
(4) Attach the forward latch beam blanket (18) with the three retainers (3).
(5) TORQUE the three retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

NOTE: If the retainer (3) is not tight against the blanket after you tighten it, put one washer under the retainer (3).

(6) Attach the forward latch beam blanket (18) to the panel with the nut (19) and washer (20).
(7) TORQUE the nut (19) to between 27 and 24 lbf.in (0.31 and 0.27 m.daN )

Subtask 78-32-41-420-065-A ** ON A/C NOT FOR ALL

D. Installation of the Lower Forward Barrel Blanket

PRE SB GRAA320NEO-A-78-30-0006-00001-930A-D

(1) Installation of the lower forward barrel blanket (17):
(a) Put the lower forward barrel blanket (17) on the inner fixed structure.
(b) Make sure that the forward edge of the blanket (17) is under the retainers for the forward seals.
(c) Make sure that all other edges of the blanket (17) are between 0.00 in. (0.00 mm) and 0.15 in. (3.81 mm) from the adjacent structures on the inner fixed structure.
(d) Attach the lower forward barrel blanket (17) to the inner fixed structure with the 23 retainers (3).
(e) TORQUE the 23 retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

:
1 If the retainers (3) is not tight against the cover after you tighten it, put one washer under the retainer (3).

END OF PRE SB GRAA320NEO-A-78-30-0006-00001-930A-D

POST SB GRAA320NEO-A-78-30-0006-00001-930A-D

(2) Installation of the lower forward barrel blanket (23):
(a) Put the lower forward barrel blanket (23) on the inner fixed structure.
(b) Make sure that the forward edge of the blanket (23) is under the retainers for the forward seals.
(c) Make sure that all other edges of the blanket (23) are between 0.00 in. (0.00 mm) and 0.15 in. (3.81 mm) from the adjacent structures on the inner fixed structure.
(d) Attach the lower forward barrel blanket (23) to the inner fixed structure with the 24 retainers (3).
(e) TORQUE the 24 retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

:
1 If the retainer (3) is not tight against the blanket after you tighten it, put one washer under the retainer (3).

END OF POST SB GRAA320NEO-A-78-30-0006-00001-930A-D

Subtask 78-32-41-420-066-A ** ON A/C NOT FOR ALL

E. Installation of the Covers and the Bumper Pad on the Lower Forward Barrel Blanket
(1) Install the zone vent cover (14) on the zone vent tube on the lower forward barrel blanket (17) or (23) with the two retainers (3).
(2) TORQUE the two retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

NOTE: If the retainer (3) is not tight against the blanket after you tighten it, put one washer under the retainer (3).

(3) Install the zone vent cover (15) on the zone vent tube on the lower forward barrel blanket (17) or (23) with the two retainers (3).
(4) TORQUE the two retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

NOTE: If the retainer (3) is not tight against the cover after you tighten it, put one washer under the retainer (3).

PRE SB GRAA320NEO-A-78-30-0006-00001-930A-D

(5) Installation of the zone vent deflector assembly (16) on the zone vent tube on the lower forward barrel blanket (17):
(a) Install the zone vent deflector assembly (16) on the zone vent tube on the lower forward barrel blanket (17) with the two retainers (3) and the two washers (22).
(b) TORQUE the two retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

NOTE: If the retainers (3) is not tight against the cover after you tighten it, put one washer under the retainer (3).

END OF PRE SB GRAA320NEO-A-78-30-0006-00001-930A-D

(6) Apply anti-seize compound (Material No.PU5-0005) to the lowest 0.5 in. (12.70 mm) of threads on the bolt (10).
(7) Mix the base primer (Material No.PU4-0010) with the activator (Material No.PU4-0011) and thinner (Material No.PU4-0012) . Refer to the instructions of the manufacturer.
(8) Installation of the bumper pad

CAUTION: DO NOT INSTALL MORE THAN 30 WASHERS AT EACH BUMPER POSITION ON EACH THRUST-REVERSER HALF. IF YOU INSTALL TOO MANY WASHERS, THERE IS A RISK THAT THE BOLT WILL NOT ENGAGE THE LOCKING FEATURE SUFFICIENTLY. THIS CAN CAUSE THE BOLT, THE BUMPER PAD AND THE WASHERS TO DISENGAGE FROM THE THRUST REVERSER.

CAUTION: MAKE SURE THAT THE PRIMER MIXTURE DOES NOT GO ON THE THREADS OF THE BOLT OR ON THE HELICOIL IN THE BOLT HOLE. IF THERE IS PRIMER MIXTURE ON THE THREADS OR ON THE HELICOIL, THE HELICOIL CAN BECOME DAMAGED DURING SUBSEQUENT REMOVAL OF THE BOLT.

(a) Install the bumper pad (9) on the lower forward barrel blanket (17) or (23) with the bolt (10) and washers (8).
(b) Wet install the bolt (10) with the base primer (Material No.PU4-0010) below the head of the bolt.

NOTE: Install the washers (8) in the same location as recorded during removal.

Subtask 78-32-41-420-067-A ** ON A/C NOT FOR ALL

F. Install the Bifurcation Latch receiver (Ref. AMM TASK 78-32-43-400-805).

Subtask 78-32-41-420-068-A ** ON A/C NOT FOR ALL

G. Installation of the Aft Latch Beam Blanket
(1) Put the aft latch beam blanket (13) on the inner fixed structure.
(2) Make sure that the aft edge of the blanket (13) is under the retainer for the aft seal.
(3) Make sure that all other edges of the blanket (13) are between 0.00 in. (0.00 mm) and 0.15 in. (3.81 mm) from the adjacent structures on the inner fixed structure.
(4) Attach the aft latch beam blanket (13) to the inner fixed structure with the seven retainers (3).
(5) TORQUE the seven retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

NOTE: If the retainer (3) is not tight against the blanket after you tighten it, put one washer under the retainer (3).

Subtask 78-32-41-420-069-A ** ON A/C NOT FOR ALL

H. Installation of the Upper Aft Barrel Blanket
(1) Put the upper aft barrel blanket (11) on the inner fixed structure.
(2) Make sure that the top edges of the blanket (11) are under the retainers for the pylon seal support.
(3) Make sure that all other edges of the blanket (11) are between 0.00 in. (0.00 mm) and 0.15 in. (3.81 mm) from the adjacent structures on the inner fixed structure.
(4) Attach the upper aft barrel blanket (11) to the inner fixed structure with the 29 retainers (3).
(5) TORQUE the 29 retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

NOTE: If the retainer (3) is not tight against the blanket after you tighten it, put one washer under the retainer (3).

(6) Apply a layer of the anti-seize compound (Material No.PU5-0002) to the threads of the retainers (12).
(7) Attach the upper aft barrel blanket (11) around the Air Cooled Oil Cooler (ACOC) exhaust duct with the seven retainers (12).
(8) TORQUE the seven retainers (12) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

.
(9) Apply anti-seize compound (Material No.PU5-0005) to the lowest 0.5 in. (12.70 mm) of threads on the bolt (10).
(10) Mix the base primer (Material No.PU4-0010) with the activator (Material No.PU4-0011) and thinner (Material No.PU4-0012) . Refer to the manufacturer's instructions.
(11) Installation of the bumper pad

(a) Install the bumper pad (9) on the upper aft barrel blanket (11) with the bolt (10) and the washers (8).
(12) Wet install the bolt (10) with the base primer (Material No.PU4-0010) below the head of the bolt.

NOTE: Install the washers (8) in the same location as recorded during removal.

(a) TORQUE the bolt (10) to between 130 and 117 lbf.in (1.47 and 1.32 m.daN )

Subtask 78-32-41-420-070-A ** ON A/C NOT FOR ALL

I. Installation of the Upper Forward Barrel Blanket and the Upper Bifurcation Bumper Blanket
(1) Put the upper forward barrel blanket (1) and upper bifurcation bumper blanket (2) on the inner fixed structure.
(2) Make sure that the forward and top edges of the blankets (1) and (2) are under the retainers for the forward and top seals.
(3) Make sure that all other edges of the blanket (1) are between 0.00 in. (0.00 mm) and 0.15 in. (3.81 mm) from the adjacent structures on the inner fixed structure.
(4) Attach the upper forward barrel blanket (1) and the upper bifurcation bumper blanket (2) to the inner fixed structure with the 25 retainers (3).
(5) TORQUE the 25 retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

NOTE: If the retainer (3) is not tight against the blanket after you tighten it, put one washer under the retainer (3).

(6) Apply anti-seize compound (Material No.PU5-0005) to the lowest 0.5 in. (12.70 mm) of threads on the bolt (10).
(7) Mix the base primer (Material No.PU4-0010) with the activator (Material No.PU4-0011) and thinner (Material No.PU4-0012) . Refer to the manufacturer's instructions.
(8) Installation of the bumper pad

(a) Install the bumper pad (9) on the upper forward barrel blanket (1) with the bolt (10) and the washers (8).
(b) Wet install the bolt (10) with the base primer (Material No.PU4-0010) below the head of the bolt.

NOTE: Install the washers (8) in the same location as recorded during removal.

Subtask 78-32-41-420-071-A ** ON A/C NOT FOR ALL

J. Installation of the Covers on the Vents on the Upper Forward Barrel Blanket
(1) Attach the zone vent deflector (5) on the zone vent tube on the upper forward barrel blanket (1) with the two retainers (3).
(2) TORQUE the two retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

NOTE: If the retainer (3) is not tight against the blanket after you tighten it, put one washer under the retainer (3).

(3) Attach the zone vent cover (7) on the zone vent tube on the upper forward barrel blanket (1) with the two retainers (3).
(4) TORQUE the two retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

NOTE: If the retainer (3) is not tight against the blanket after you tighten it, put one washer under the retainer (3).

(5) Attach the zone vent deflector assembly (6) on the zone vent tube on the upper forward barrel blanket (1) with the two retainers (3).
(6) TORQUE the two retainers (3) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )

NOTE: If the retainer (3) is not tight against the blanket after you tighten it, put one washer under the retainer (3).

Subtask 78-32-41-420-072-A ** ON A/C NOT FOR ALL

K. Install the AOC seal on the upper forward barrel blanket (1) (Ref. AMM TASK 78-32-42-400-802).

5. Close-up
Subtask 78-32-41-410-092-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the left thrust reverser cowl-door (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL.

Subtask 78-32-41-440-082-A ** ON A/C NOT FOR ALL

B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 78-32-41-410-093-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 13:13:01 UTC