DOC AIRBUS | AMM A320FClosing of the Thrust Reverser Doors with One or More Door Opening Actuator(s) Defective [CFMB]
TASK 78-36-00-410-804-B
Closing of the Thrust Reverser Doors with One or More Door Opening Actuator(s) Defective
To allow the thrust reverser half-doors to be opened if the door opening actuator is defective.
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 78-36-00-860-056-A ** ON A/C NOT FOR ALL
Subtask 78-36-00-640-054-A ** ON A/C NOT FOR ALL
Subtask 78-36-00-440-062-A ** ON A/C NOT FOR ALL Subtask 78-36-00-410-078-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:26:24 UTC
Closing of the Thrust Reverser Doors with One or More Door Opening Actuator(s) Defective
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobTo allow the thrust reverser half-doors to be opened if the door opening actuator is defective.
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 | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 43.5 and 26 lbf.in (0.49 and 0.29 m.daN )  |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03FDG1) | Mineral Oil base Grease-Anti-Fretting - - |
| (Material No.03GBB1) | Synthetic Oil base Grease-General Purpose Clay Thickened - |
| (Material No.03HBD9) | Synthetic Ester base Grease-General Purpose Low Temp - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| 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 |
T-Ring and V-Groove Lubrication AreaSubtask 78-36-00-860-056-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
Subtask 78-36-00-010-093-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
B. Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.
Subtask 78-36-00-040-069-A ** ON A/C NOT FOR ALL 4. Procedure(1) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.
Subtask 78-36-00-640-054-A ** ON A/C NOT FOR ALL
A. Lubricate the V-Groove
(1) Inspect the J-ring on the forward position of the thrust reverser.
Look for a clean, thin coating of grease covering the entire length and depth of each blade.
(2) Inspect the V-groove and circumference. Look for a clean, thin coating of grease covering the entire length and depth of each groove.
(3) If all the mating surfaces are lubricated and are clear of excess grease and dirt, no further action is required. If any mating surface is dry, or if excess grease and dirt, or other debris are detected on the blade or in the grooves, continue this procedure.
(4) Clean the mating surfaces. Use a clean, dry wiping cloth to remove all dirt, excess old lubricant, and any other foreign matter from all "J" and "V" grooves.
(5) Apply a thin coating of Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Mineral Oil base Grease-Anti-Fretting - - (Material No.03FDG1) or Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) , to all the mating surfaces of the "J" ring and "V" grooves. Avoid excess which could squeeze out when the doors are closed. Method of prescribed application is to wipe the grease off with a clean cloth or a clean brush.
Subtask 78-36-00-480-062-A ** ON A/C NOT FOR ALL (1) Inspect the J-ring on the forward position of the thrust reverser.
Look for a clean, thin coating of grease covering the entire length and depth of each blade.
(2) Inspect the V-groove and circumference. Look for a clean, thin coating of grease covering the entire length and depth of each groove.
(3) If all the mating surfaces are lubricated and are clear of excess grease and dirt, no further action is required. If any mating surface is dry, or if excess grease and dirt, or other debris are detected on the blade or in the grooves, continue this procedure.
(4) Clean the mating surfaces. Use a clean, dry wiping cloth to remove all dirt, excess old lubricant, and any other foreign matter from all "J" and "V" grooves.
(5) Apply a thin coating of Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Mineral Oil base Grease-Anti-Fretting - - (Material No.03FDG1) or Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) , to all the mating surfaces of the "J" ring and "V" grooves. Avoid excess which could squeeze out when the doors are closed. Method of prescribed application is to wipe the grease off with a clean cloth or a clean brush.
B. Install the lifting strap on the lower hoist point of the half-door.
Subtask 78-36-00-820-052-A ** ON A/C NOT FOR ALL C. Adjust the hoist to support the weight of the half-door.
Subtask 78-36-00-020-058-A ** ON A/C NOT FOR ALL D. Remove the hold-open rod as follows:
(1) Disconnect the quick-release pin from the attachment bracket of the forward frame.
(2) Attach the hold-open rod to the upper or lower bracket on the adapter ring assembly with the quick-release pin.
(3) If the half-doors were opened to the 45-degree position:
(b) TORQUE the nut to between 43.5 and 26 lbf.in (0.49 and 0.29 m.daN ).
Subtask 78-36-00-410-077-A ** ON A/C NOT FOR ALL (1) Disconnect the quick-release pin from the attachment bracket of the forward frame.
(2) Attach the hold-open rod to the upper or lower bracket on the adapter ring assembly with the quick-release pin.
(3) If the half-doors were opened to the 45-degree position:
CAUTION:
MAKE SURE THAT THE RED BOLT AND NUT ARE INSTALLED IN THE UPPER LUG OF THE HOLD-OPEN ROD FITTING BEFORE YOU CLOSE THE THRUST REVERSER DOOR. IF THE RED BOLT AND NUT ARE NOT INSTALLED, IT CAN CAUSE DAMAGE TO ENGINE COMPONENTS.
(a) Put the red bolt and nut in the upper lug of the hold-open rod fitting on the inner cowl. (b) TORQUE the nut to between 43.5 and 26 lbf.in (0.49 and 0.29 m.daN )
. E. Close the Half-Door
(1) Use the hoist to lower the half-door to the closed position.
(2) Remove the lifting strap from the hoist point on the half-door.
(3) Push the thrust reverser doors together to engage the door latches.
(4) Make sure that the latch hooks on the right thrust reverser door are correctly engaged in the stirrups (eyebolts) on the left thrust reverser door.
(5) Push each latch handle closed until it snaps over-center and the handle stays in the thrust reverser door slots.
5. Close-up(1) Use the hoist to lower the half-door to the closed position.
(2) Remove the lifting strap from the hoist point on the half-door.
(3) Push the thrust reverser doors together to engage the door latches.
(4) Make sure that the latch hooks on the right thrust reverser door are correctly engaged in the stirrups (eyebolts) on the left thrust reverser door.
(5) Push each latch handle closed until it snaps over-center and the handle stays in the thrust reverser door slots.
Subtask 78-36-00-440-062-A ** ON A/C NOT FOR ALL Subtask 78-36-00-410-078-A ** ON A/C NOT FOR ALL
B. 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 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
(5) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION or the 98D27803500001 LOCKING TOOL ZERO POS from the flap and slat lever, if installed.
(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 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
(5) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION or the 98D27803500001 LOCKING TOOL ZERO POS from the flap and slat lever, if installed.