DOC AIRBUS | AMM A320FInstallation of the Thrust Reverser Door Opening System (DOS) Actuator [PW11]
TASK 78-36-02-400-801-A
Installation of the Thrust Reverser Door Opening System (DOS) Actuator
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 78-36-02-941-051-A ** ON A/C NOT FOR ALL
Subtask 78-36-02-710-051-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 13:13:12 UTC
Installation of the Thrust Reverser Door Opening System (DOS) Actuator
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 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 | Torque wrench: range to between 90 and 75 lbf.in (1.02 and 0.85 m.daN )  | |
| No specific | Torque wrench: range to between 220 and 180 lbf.in (2.49 and 2.03 m.daN ) | |
| 636-3000-25GSE | 1 | TR DOS INSTALL TOOL |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.PU1-0001) | lint-free cotton cloth |
| (Material No.PU2-0001) | alcohol, isopropyl |
| (Material No.PU2-0002) | acetone |
| (Material No.PU4-0002) | epoxy primer, fluid resistant |
| (Material No.PU4-0004A) | curing solution, epoxy primer |
| (Material No.PU4-0005) | thinner |
| (Material No.PU5-0002) | anti-seize compound |
| (Material No.PU5-0005) | anti-seize compound |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 437AL, 438AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 447AL, 448AR | |
| 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 78-36-00-010-802-A | Opening of the Thrust Reverser Cowl-Doors |
| TASK 78-36-00-410-802-A | Closing of the Thrust Reverser Cowl-Doors |
Thrust Reverser Door Opening System (DOS) ActuatorSubtask 78-36-02-941-051-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 78-36-02-010-051-A ** ON A/C NOT FOR ALL (1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
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 78-36-02-040-051-A ** ON A/C NOT FOR ALL (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.
C. Deactivation of the Thrust Reverser System for Ground Maintenance
4. ProcedureWARNING:
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). CAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 78-36-02-480-051-A ** ON A/C NOT FOR ALL A. Installation of the 636-3000-25GSE TR DOS INSTALL TOOL
(1) Attach the 636-3000-25GSE TR DOS INSTALL TOOL to the DOS actuator (1).
(2) Use the 636-3000-25GSE TR DOS INSTALL TOOL to compress the DOS actuator (1) until the DOS rod ends line up with brackets on torque box and fan case. Refer to the instructions of the manufacturer.
Subtask 78-36-02-420-050-A ** ON A/C NOT FOR ALL (1) Attach the 636-3000-25GSE TR DOS INSTALL TOOL to the DOS actuator (1).
(2) Use the 636-3000-25GSE TR DOS INSTALL TOOL to compress the DOS actuator (1) until the DOS rod ends line up with brackets on torque box and fan case. Refer to the instructions of the manufacturer.
B. Installation of the Door Opening System (DOS) Actuator (1)
PU2-0001 alcohol, isopropyl
(2) Apply a layer of the anti-seize compound (Material No.PU5-0005) or equivalent (Ref. AMM TASK 70-30-00-918-803), to the threads of the bolts (7).
(3) Prepare thePU4-0002 epoxy primer, fluid resistant PU4-0004A curing solution, epoxy primer
(4) Install the fitting (2) on the engine fan case with the six bolts (7) and six washers (8). Wet install the fasteners with thePU4-0002 epoxy primer, fluid resistant PU4-0002 epoxy primer, fluid resistant
(5) TORQUE the bolts (7) to between 90 and 75 lbf.in (1.02 and 0.85 m.daN ).
(6) Clean the threads of the bolts (3) and nuts (6) with the acetone (Material No.PU2-0002) . Remove the acetone (Material No.PU2-0002) from the bolts and nuts with the clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
(7) Apply the anti-seize compound (Material No.PU5-0002) to the threads of the bolts (3) and nuts (6).
(8) Attach the actuator (1) to the thrust reverser with the bolt (3), bushing (4), washer (5) and nut (6).
(9) TORQUE the nut (6) to between 220 and 180 lbf.in (2.49 and 2.03 m.daN ).
(10) Attach the actuator (1) to the fitting (2) on the engine fan case with the bolt (3), bushing (4), washer (5) and nut (6).
(11) TORQUE the nut (6) to between 220 and 180 lbf.in (2.49 and 2.03 m.daN ).
Subtask 78-36-02-080-051-A ** ON A/C NOT FOR ALL NOTE: This procedure is for the left side. The right side is opposite.
(1) Clean the faying surface of the fitting (2) with (2) Apply a layer of the anti-seize compound (Material No.PU5-0005) or equivalent (Ref. AMM TASK 70-30-00-918-803), to the threads of the bolts (7).
(3) Prepare the
(4) Install the fitting (2) on the engine fan case with the six bolts (7) and six washers (8). Wet install the fasteners with the
(5) TORQUE the bolts (7) to between 90 and 75 lbf.in (1.02 and 0.85 m.daN )
. (6) Clean the threads of the bolts (3) and nuts (6) with the acetone (Material No.PU2-0002) . Remove the acetone (Material No.PU2-0002) from the bolts and nuts with the clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
(7) Apply the anti-seize compound (Material No.PU5-0002) to the threads of the bolts (3) and nuts (6).
(8) Attach the actuator (1) to the thrust reverser with the bolt (3), bushing (4), washer (5) and nut (6).
(9) TORQUE the nut (6) to between 220 and 180 lbf.in (2.49 and 2.03 m.daN )
. (10) Attach the actuator (1) to the fitting (2) on the engine fan case with the bolt (3), bushing (4), washer (5) and nut (6).
(11) TORQUE the nut (6) to between 220 and 180 lbf.in (2.49 and 2.03 m.daN )
. C. Removal of the 636-3000-25GSE TR DOS INSTALL TOOL
(1) Remove the 636-3000-25GSE TR DOS INSTALL TOOL from the DOS actuator (1). Refer to the instructions of the manufacturer.
5. Close-up(1) Remove the 636-3000-25GSE TR DOS INSTALL TOOL from the DOS actuator (1). Refer to the instructions of the manufacturer.
Subtask 78-36-02-710-051-A ** ON A/C NOT FOR ALL
A. Test
(1) Open and close the thrust reverser with the actuator (1) to make sure that it operates correctly (Ref. AMM TASK 78-36-00-010-802) and (Ref. AMM TASK 78-36-00-410-802).
Subtask 78-36-02-440-051-A ** ON A/C NOT FOR ALL (1) Open and close the thrust reverser with the actuator (1) to make sure that it operates correctly (Ref. AMM TASK 78-36-00-010-802) and (Ref. AMM TASK 78-36-00-410-802).
B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 78-36-02-410-050-A ** ON A/C NOT FOR ALL