DOC AIRBUS | AMM A320FInstallation of the Thrust Reverser Half Door Opening Actuator [CFMB]
TASK 78-36-51-400-041-A
Installation of the Thrust Reverser Half Door Opening 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. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 78-36-51-860-050-A ** ON A/C NOT FOR ALL
Subtask 78-36-51-420-050-A ** ON A/C NOT FOR ALL
Subtask 78-36-51-410-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:26:45 UTC
Installation of the Thrust Reverser Half Door Opening Actuator
WARNING:
WEAR A FACE SHIELD WHICH IS RESISTANT TO HIGH PRESSURE JETS WHEN YOU WORK ON PRESSURIZED SYSTEMS.
WARNING:
DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:
- FLUSH IT AWAY WITH CLEAN WATER
- GET MEDICAL AID.
CAUTION:
YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS LUBRICANT.
CAUTION:
USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:
1. Reason for the Job- ONE WRENCH TO HOLD THE UNION, AND
- ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | COVER - PROTECTION |
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 25 and 10 lbf.in (0.28 and 0.11 m.daN )  | |
| No specific | Torque wrench: range to between 26.553 and 22.127 lbf.in (0.30 and 0.25 m.daN ) | |
| No specific | Torque wrench: range to between 150 and 130 lbf.in (1.70 and 1.47 m.daN ) | |
| No specific | Torque wrench: range to between 278 and 139 lbf.in (3.14 and 1.57 m.daN ) | |
| HIX4001 | 1 | PUMP-ACTUATOR, FAN REVERSER |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2104) | molykote G rapid |
| (Material No.CP2245) | finish paint EA4 blue 5991 |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR, 461AL, 462AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 5 | COTTER PIN | AIPC 78-36-51-01-030 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-040-B | Closing of the Fan Cowl Doors |
| TASK 78-30-00-081-041-B | Make the Thrust Reverser Serviceable after Maintenance |
| TASK 78-30-00-481-041-B | Make the Thrust Reverser Unserviceable for Maintenance |
| TASK 78-36-00-010-040-B | Opening of the Thrust Reverser Doors |
| TASK 78-36-00-410-040-B | Closing of the Thrust Reverser Doors |
Thrust Reverser Left Hand Cowl Opening ActuatorSubtask 78-36-51-860-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
Subtask 78-36-51-010-054-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open (Ref. AMM TASK 78-36-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 78-36-51-040-052-A ** ON A/C NOT FOR ALL 4. Procedure(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open (Ref. AMM TASK 78-36-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 78-36-51-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Cowl Opening Actuator
(3) TORQUE the nut (10) to between 278 and 139 lbf.in (3.14 and 1.57 m.daN ).
(4) Lock the nut (10) with a new AIPC 78-36-51-01-030 COTTER PIN (5).
(5) Remove the COVER - PROTECTION from the hydraulic hose (60) and the actuator (50).
(b) Connect the hydraulic hose (60) to the supply pipe on the half door.
.
(6) Install the hydraulic hose (60) on the cowl opening actuator.
(a) Loosely connect the hose (60) to the actuator (50) and tighten the hose coupling nut with your hand.
(b) Bleed the air from the hydraulic hose (60).
2 Connect the HIX4001 PUMP-ACTUATOR, FAN REVERSER to the thrust reverser half door connection.
3 Operate the hand pump until hydraulic fluid flows out thru the coupling nut of the hose (60).
4 When no air bubbles are seen in the fluid at the coupling nut, stop the pump.
5 Remove unwanted fluid with a clean cloth.
(c) Torque the hose nut as follows:
.
(d) Remove the drain can from below the cowl opening actuator.
(7) Apply a thin layer of lubricant molykote G rapid (Material No.CP2104) on the threads of the bolt (20).
(8) Use the Hand Pump to extend the rod on the cowl opening actuator (50) to the open position.
(10) TORQUE the nut (10) to between 278 and 139 lbf.in (3.14 and 1.57 m.daN ).
(11) Lock the nut (10) with a new AIPC 78-36-51-01-030 COTTER PIN (5).
(12) Put the upper cooling jacket (55) or (65) in position on the cowl opening actuator (50).
(13) Put the lower cooling jacket (45) or (70) in position on the cowl opening actuator (50).
(14) Install the two clamps (40) that attach the cooling jackets.
(15) Put the flexible cooling hose (35) or (85) on the lower cooling jacket (45) or (70). Attach it with the clamp (25).
(16) For the right hand cowl opening actuator only. Put the clamp (90) on the flexible cooling hose (85).
(17) Put the other end of the flexible cooling hose (35) or (85) on the inlet scoop (30) or (75). Attach it with the clamp (25).
(18) TORQUE the clamp (25) to between 25 and 10 lbf.in (0.28 and 0.11 m.daN ).
(19) For the right hand cowl opening actuator only. Put the stud clip (95) in the hole on the clamp (90) and install the nut (80).
(20) TORQUE the nut (80) to between 26.553 and 22.127 lbf.in (0.30 and 0.25 m.daN ).
5. Close-upNOTE: You should apply a witness line of finish paint EA4 blue 5991 (Material No.CP2245) on all nuts and connections after you have checked their torques.
(1) Apply a thin layer of molykote G rapid (Material No.CP2104) on the threads of the bolts (20). CAUTION:
MAKE SURE THE WASHER ON THE ACTUATOR ROD IS ON THE BOTTOM OF THE ROD. THE WASHER MUST BE DOWN. IF THE WASHER IS NOT DOWN DAMAGE CAN OCCUR TO THE STRUCTURE.
CAUTION:
INSTALL THE COWL-OPENING ACTUATOR IN RETRACTED POSITION.
(2) Put the cowl opening actuator (50) in position at the thrust reverser hinge. NOTE: The bolt head goes forward on the left cowl opening actuator, and the bolt head goes aft on the right cowl opening actuator.
(a) Install the bolt (20), washer (15) and nut (10). (3) TORQUE the nut (10) to between 278 and 139 lbf.in (3.14 and 1.57 m.daN )
. (4) Lock the nut (10) with a new AIPC 78-36-51-01-030 COTTER PIN (5).
(5) Remove the COVER - PROTECTION from the hydraulic hose (60) and the actuator (50).
CAUTION:
YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS LUBRICANT.
CAUTION:
MAKE SURE THE BEND IN THE FLEX HOSE IS OUTBOARD AND AWAY FROM THE ENGINE. THE HOSE CAN RUB ON ENGINE PARTS. IF THE HOSE IS BENT INBOARD IT RUBS ON ENGINE PARTS AND CAN BE DAMAGED.
(a) Install the hydraulic hose (60) on the thrust reverser half door. (b) Connect the hydraulic hose (60) to the supply pipe on the half door.
NOTE: Use a second wrench to hold the nut on the inner supply pipe when you torque the nut on the hose.
(c) TORQUE the coupling nut on the hose (60) to between 150 and 130 lbf.in (1.70 and 1.47 m.daN ) . (6) Install the hydraulic hose (60) on the cowl opening actuator.
(a) Loosely connect the hose (60) to the actuator (50) and tighten the hose coupling nut with your hand.
(b) Bleed the air from the hydraulic hose (60).
CAUTION:
DO NOT OVER-TORQUE THE COUPLING NUT ON THE HYDRAULIC HOSE. IF YOU TORQUE THE NUT TOO MUCH YOU CAN DAMAGE THE DOOR OPENING ACTUATOR.
1 Put a drain can below the cowl opening actuator and the coupling nut of the hose. 2 Connect the HIX4001 PUMP-ACTUATOR, FAN REVERSER to the thrust reverser half door connection.
3 Operate the hand pump until hydraulic fluid flows out thru the coupling nut of the hose (60).
4 When no air bubbles are seen in the fluid at the coupling nut, stop the pump.
5 Remove unwanted fluid with a clean cloth.
(c) Torque the hose nut as follows:
CAUTION:
DO NOT OVER-TORQUE THE COUPLING NUT ON THE HYDRAULIC HOSE. IF YOU TORQUE THE NUT TOO MUCH YOU CAN DAMAGE THE DOOR OPENING ACTUATOR.
1 After the air is bled from the hose (60), TORQUE the hose coupling nut to between 150 and 130 lbf.in (1.70 and 1.47 m.daN ) . (d) Remove the drain can from below the cowl opening actuator.
(7) Apply a thin layer of lubricant molykote G rapid (Material No.CP2104) on the threads of the bolt (20).
(8) Use the Hand Pump to extend the rod on the cowl opening actuator (50) to the open position.
NOTE: The bolt head goes forward on the left cowl opening actuator, and the bolt head goes aft on the right cowl opening actuator.
(9) Put the actuator (50) in position at the pylon fitting and attach it with the bolt (20), washer (15) and nut (10). (10) TORQUE the nut (10) to between 278 and 139 lbf.in (3.14 and 1.57 m.daN )
. (11) Lock the nut (10) with a new AIPC 78-36-51-01-030 COTTER PIN (5).
(12) Put the upper cooling jacket (55) or (65) in position on the cowl opening actuator (50).
(13) Put the lower cooling jacket (45) or (70) in position on the cowl opening actuator (50).
(14) Install the two clamps (40) that attach the cooling jackets.
(15) Put the flexible cooling hose (35) or (85) on the lower cooling jacket (45) or (70). Attach it with the clamp (25).
(16) For the right hand cowl opening actuator only. Put the clamp (90) on the flexible cooling hose (85).
(17) Put the other end of the flexible cooling hose (35) or (85) on the inlet scoop (30) or (75). Attach it with the clamp (25).
(18) TORQUE the clamp (25) to between 25 and 10 lbf.in (0.28 and 0.11 m.daN )
. (19) For the right hand cowl opening actuator only. Put the stud clip (95) in the hole on the clamp (90) and install the nut (80).
(20) TORQUE the nut (80) to between 26.553 and 22.127 lbf.in (0.30 and 0.25 m.daN )
. Subtask 78-36-51-410-050-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the thrust reverser cowl doors (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 78-36-51-440-050-A ** ON A/C NOT FOR ALL Subtask 78-36-51-410-051-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the thrust reverser cowl doors (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR