Installation of the Closure Assist Assembly [PW11]

TASK 78-32-45-400-804-A
Installation of the Closure Assist Assembly

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.

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

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

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	Torque wrench: range to between 90 and 75 lbf.in (1.02 and 0.85 m.daN )
No specific	Torque wrench: range to between 270 and 240 lbf.in (3.05 and 2.71 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.PU1-0001)	cloth
(Material No.PU2-0001)	alcohol, isopropyl
(Material No.PU3-0004)	sealant

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, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL, 462AR

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 78-32-35-400-801-A	Installation of the Thrust Reverser Latches
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
Closure Assist Assembly

3. Job Set-up
Subtask 78-32-45-941-062-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 78-32-45-010-075-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.

Subtask 78-32-45-040-064-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 78-32-45-010-083-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Make sure that the thrust reverser cowl-doors are open (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 78-32-45-420-058-A ** ON A/C NOT FOR ALL

A. Installation of the Closure Assist Assembly
PRE SB GRAA320NEO-A-78-30-0030-00001-930A-D
(1) Install the closure assist hook fitting (13):
(a) Install the closure assist hook fitting (13) on the latch beam with the two pins (14), the two washers (12) and the two nuts (11). Wet install the two pins (14) with the sealant (Material No.PU3-0004) .
(b) TORQUE the nuts (11) to between 90 and 75 lbf.in (1.02 and 0.85 m.daN )

.

END OF PRE SB GRAA320NEO-A-78-30-0030-00001-930A-D

POST SB GRAA320NEO-A-78-30-0030-00001-930A-D
(2) Install the closure assist hook fitting (15):
(a) Install the closure assist hook fitting (15) on the latch beam with the two pins (14), the two washers (12) and the two nuts (11). Wet install the two pins (14) with the sealant (Material No.PU3-0004) .
(b) TORQUE the nuts (11) to between 90 and 75 lbf.in (1.02 and 0.85 m.daN )

.

END OF POST SB GRAA320NEO-A-78-30-0030-00001-930A-D

(3) Install the closure assist fitting (7):
(a) Clean the faying surfaces of the closure assist fitting (7) and the latch beam with PU2-0001alcohol, isopropyl on a clean cloth (Material No.PU1-0001) .
(b) Clean the faying surfaces with a clean, dry cloth (Material No.PU1-0001) before the PU2-0001alcohol, isopropyl dries.
(c) Apply a layer of approximately 0.003 in. (0.076 mm) - 0.006 in. (0.152 mm) thick of sealant (Material No.PU3-0004) to the faying surface of the closure assist fitting (7).

NOTE: If necessary, apply a small bead of the sealant (Material No.PU3-0004) near the edge of the closure assist fitting (7). This will help make sure that some of the sealant will squeeze out from below the closure assist fitting (7).

(d) Install the closure assist fitting (7) on the latch beam with the two pins (10), the two washers (8) and the two nuts (9). Wet install the fasteners with the sealant (Material No.PU3-0004) .
(e) TORQUE the nuts (9) to between 90 and 75 lbf.in (1.02 and 0.85 m.daN )

.
(f) Make sure that the sealant (Material No.PU3-0004) squeezed out from below all of the edges of the closure assist fitting (7):
1 Fair the sealant along the edges of the closure assist fitting (7) to a height of approximately 0.120 in. (3.05 mm).
2 Clean the unwanted sealant from the latch beam with PU2-0001alcohol, isopropyl on a cloth (Material No.PU1-0001) .
3 Do not get PU2-0001alcohol, isopropyl in the sealant (Material No.PU3-0004) below the closure assist fitting (7).
(g) Install latches 1A and 1B on the latch beam (Ref. AMM TASK 78-32-35-400-801).
(4) Install the closure assist assembly (1):
(a) Put the closure assist assembly (1) in position on the thrust reverser.
1 Align the rod end with the closure assist fitting (7).
(b) Attach the closure assist assembly (1) to the closure assist fitting (7).
1 Use the bolt (2), the two washers (3), the bushing (4), the bushing (6) and the nut (5).
(c) TORQUE the nut (5) to between 270 and 240 lbf.in (3.05 and 2.71 m.daN )

.
(d) Move the closure assist assembly (1) and put the other rod end of the closure assist assembly (1) into the stow bracket.
(e) Close the clip assembly on the stow bracket.

CAUTION: PUT THE CLOSURE ASSIST FITTING IN ITS STOWED POSITION WHEN THE CLOSURE ASSIST ASSEMBLY IS NOT IN USE. IF YOU LET THE CLOSURE ASSIST FITTING HANG, OTHER COMPONENTS CAN HIT IT AND CAUSE DAMAGE TO IT.

(f) Engage the closure assist fitting (7) spring clip on the closure assist assembly (1).

5. Close-up
Subtask 78-32-45-410-072-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 thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.

Subtask 78-32-45-440-058-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 78-32-45-410-068-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) 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.
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:33:29 UTC