W DOC AIRBUS | AMM A320F

Installation of the Thrust Reverser Bifurcation Latch Receiver [PW11]

TASK 78-32-43-400-805-A
Installation of the Thrust Reverser Bifurcation Latch Receiver

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: 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 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 35 and 31.5 lbf.in (0.40 and 0.36 m.daN ) T
No specific
Torque wrench: range to between 50 and 45 lbf.in (0.57 and 0.51 m.daN ) T
No specific
Torque wrench: range to between 1360 and 1190 lbf.in (15.37 and 13.45 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.PU1-0001)
lint-free cotton cloth
(Material No.PU2-0001)
alcohol, isopropyl
(Material No.PU4-0002)
epoxy primer, fluid resistant
(Material No.PU4-0004A)
curing solution, epoxy primer
(Material No.PU4-0005)
thinner
 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 70-30-00-918-803-A
Consumable Materials Index for the Nacelle (UTC Aerospace Systems)
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 78-32-41-000-803-A
Removal of the Left Thrust Reverser Thermal Insulation Blankets
TASK 78-32-41-400-803-A
Installation of the Left Thrust Reverser Thermal Insulation Blankets
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
F Bifurcation Latch System Receiver
3. Job Set-up
Subtask 78-32-43-941-062-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 78-32-43-010-074-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 78-32-43-040-063-A ** ON A/C NOT FOR ALL
C. Deactivation of the Thrust Reverser 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 78-32-43-010-075-A ** ON A/C NOT FOR ALL
D. Get Access
   (1) Make sure that the left 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
   (2) Make sure that the lower forward barrel blanket from the lower inner structure of the left thrust reverser door is removed (Ref. AMM TASK 78-32-41-000-803).
4. Procedure
CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 78-32-43-420-073-A ** ON A/C NOT FOR ALL
A. Installation of the bifurcation latch system handle assembly and receiver assembly on the left thrust reverser door.
   (1) Removal of protection covers
CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.
     (a) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.
   (2) Install the receiver assembly (7) with the bolt (8), washer (9), bushing (10) and nut (11).
   (3) TORQUE the nut (11) to between 1360 and 1190 lbf.in (15.37 and 13.45 m.daN ) T.
   (4) Mix the PU4-0002epoxy primer, fluid resistant or equivalent (Ref. AMM TASK 70-30-00-918-803), PU4-0004Acuring solution, epoxy primer and thinner (Material No.PU4-0005) or equivalent (Ref. AMM TASK 70-30-00-918-803). Refer to the manufacturer's instructions.
   (5) Apply the PU4-0002epoxy primer, fluid resistant or equivalent (Ref. AMM TASK 70-30-00-918-803), mixture to the two shims (4) and shanks of the four bolts (3). Let the primer dry to touch.
   (6) Attach the handle assembly (6) to the bifurcation latch receiver assembly (7).
   (7) Install the two shims (4), the handle assembly (6) and the bifurcation latch system panel (5) to the latch beam with the four bolts (3).
   (8) TORQUE the bolts (3) to between 50 and 45 lbf.in (0.57 and 0.51 m.daN ) T.
   (9) Install the ground strap to the handle assembly (6) as follows:
     (a) Clean the bolt (1), washer (2) and the mating surface of the handle assembly with the clean lint-free cotton cloth (Material No.PU1-0001) and the PU2-0001alcohol, isopropyl.
     (b) Remove the PU2-0001alcohol, isopropyl with the clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Attach the ground strap lug to the handle assembly (6) with the bolt (1) and washer (2).
     (d) TORQUE the bolt (1) to between 35 and 31.5 lbf.in (0.40 and 0.36 m.daN ) T.
     (e) Measure the resistance between the ground strap and the ground strap fasteners. Make sure it is less than 0.005 ohm.
   (10) If the resistance is more than 0.005 ohm, remove the hardware and repeat steps 4.A.(9)(a). thru 4.A.(9)(e).
5. Close-up
Subtask 78-32-43-860-056-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the forward barrel blanket on the lower inner structure of the left thrust reverser door. (Ref. AMM TASK 78-32-41-400-803)
   (3) 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 78-32-43-440-056-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 78-32-43-410-062-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 WARNING NOTICE(S).
[Rev.10 from 2021] 2026.04.01 03:33:24 UTC
"Aviabrain" 2025