DOC AIRBUS | AMM A320FInstallation of the Left or Right Half Door of Thrust Reverser [CFMB]
TASK 78-32-11-400-002-A
Installation of the Left or Right Half Door of Thrust Reverser
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 78-32-11-860-051-A ** ON A/C NOT FOR ALL
Subtask 78-32-11-080-051-A ** ON A/C NOT FOR ALL
Subtask 78-32-11-410-059-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:25:49 UTC
Installation of the Left or Right Half Door of Thrust Reverser
CAUTION:
THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.
1. Reason for the JobNOTE: Interferences between the LPTACC Inlet Airscoop assy and the Thrust reverser cowl have been observed in production on a limited number of A320 Family aircraft powered with CFM56-5B/3 engines. CFM has issued SB CFM56-5B S/B 75-0044. In order to recover the gap between the LPTACC scoop and the Thrust reverser cowl to avoid potential interference, Airbus recommends to incorporate this SB at the opportunity of Thrust Reverser Cowl Removal/Installation.
2. Job Set-up InformationA. 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 45 and 35 lbf.in (0.51 and 0.40 m.daN )  | |
| HIX1001 | 1 | SLING,HANDLING |
| HIX3001 | 1 | WORKSTAND-MOBILE |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2104) | molykote G rapid |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 10 | COTTER PIN | AIPC 78-32-11-01-050 |
| 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 71-13-00-800-041-A | Adjustment of the Fan Cowl Doors |
| TASK 71-13-11-400-041-A | Installation 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 78-30-00-710-040-B | Thrust Reverser Hydraulic System Bleed Procedure |
| TASK 78-31-00-710-042-A | Operational Test of the Thrust Reverser System |
| TASK 78-31-00-710-043-A-01 | Operational Test of the Thrust Reverser without CFDS - Engine Running |
| TASK 78-31-00-710-043-A | Operational Test of the Thrust Reverser without CFDS - Engine Not Running |
| TASK 78-31-00-710-043-A-01 | Operational Test of the Thrust Reverser without CFDS - Engine Running |
| TASK 78-36-00-410-040-B | Closing of the Thrust Reverser Doors |
| TASK 78-36-41-820-042-A | Adjustment of the Thrust Reverser Half Door Latches |
| TASK 78-36-42-820-002-A | Adjustment of the LH or R/H Thrust Reverser "J" Ring on Wing |
| TASK 78-36-51-400-041-A | Installation of the Thrust Reverser Half Door Opening Actuator |
| FOR [1000EM1] (ENGINE-1) | |
| TASK 29-11-49-400-009-A | Installation of the Engine 1 Thrust-Reverser Hydraulic-Supply Hoses |
| FOR [1000EM2] (ENGINE-2) | |
| TASK 29-13-49-400-009-A | Installation of the Engine 2 Thrust-Reverser Hydraulic-Supply Hoses |
Hydraulic Blanking CapsSubtask 78-32-11-860-051-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 78-32-11-010-059-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. 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 78-32-11-040-054-A ** ON A/C NOT FOR ALL Subtask 78-32-11-865-052-A ** ON A/C NOT FOR ALL (1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
D. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
Subtask 78-32-11-080-051-A ** ON A/C NOT FOR ALL
A. Preparation for Installation
(1) Install the HIX1001 SLING,HANDLING on the half door as follows:
(b) Install the handling sling on the two upper hoist points of half door.
(c) Remove the mobile workstand attachment strap from the lower hoist point.
(d) Install the lifting strap bracket to the lower hoist point on the middle lower fitting. Hook the other end of the lifting strap to the hook on the winch above.
(2) Remove the half door from the HIX3001 WORKSTAND-MOBILE as follows:
(a) Remove the cotter pins and hinge pins from the mobile workstand.
(b) Remove the half door from the mobile workstand.
(c) Install the hinge pins on the mobile workstand and attach with cotter pins.
Subtask 78-32-11-410-057-A ** ON A/C NOT FOR ALL (1) Install the HIX1001 SLING,HANDLING on the half door as follows:
CAUTION:
THE STOPS ON THE SCREWS MUST TOUCH THE 12 O'CLOCK BEAM. IF THE SCREWS ON THE LIFTING BEAM ARE NOT FULLY IN THE HOIST POINT, THE HALF DOOR COULD FALL. IF THE HALF DOOR FALLS IT CAN BE DAMAGED.
(a) Remove and keep the hoist plugs from the two upper hoist points. (b) Install the handling sling on the two upper hoist points of half door.
(c) Remove the mobile workstand attachment strap from the lower hoist point.
(d) Install the lifting strap bracket to the lower hoist point on the middle lower fitting. Hook the other end of the lifting strap to the hook on the winch above.
(2) Remove the half door from the HIX3001 WORKSTAND-MOBILE as follows:
(a) Remove the cotter pins and hinge pins from the mobile workstand.
(b) Remove the half door from the mobile workstand.
(c) Install the hinge pins on the mobile workstand and attach with cotter pins.
B. Installation of the Left or Right Thrust Reverser half Door
(2) Move the half door to the 10 degrees opening position.
(3) Put thrust reverser in a position to align the hinges with the hinges on the pylon.
(4) Attach the half door to the pylon with the hinge pins, the washers and the nuts.
(5) Tighten the nut as required to remove the clearance between the washer and hinge bushing.
(6) Align the cotter pin holes.
(8) Disconnect the two shackles of the handling sling.
(9) Remove the handling sling from the two upper hoist points of the half door.
(10) Move the half door:
(11) Install the hold-open rods as follows:
(a) Disconnect the quick release pin that attach the hold-open rod to the upper bracket.
(b) Attach the hold-open rod to the attach bracket of the forward frame with the quick-release pin.
(12) Install the left or right door-opening actuators (Ref. AMM TASK 78-36-51-400-041).
(13) Close the left and right thrust reverser half doors (Ref. AMM TASK 78-36-00-410-040).
(14) Remove the lifting strap bracket and lifting strap from the middle lower hoist point.
(15) Install the hoist plug on the lower hoist point.
(16) Attach the hinge access panel to the top of the half door with 13 screws.
(17) TORQUE the screws to between 45 and 35 lbf.in (0.51 and 0.40 m.daN ).
(18) Remove the blanking caps from the electrical connectors.
(19) Connect the right electrical harness connector to the electrical junction box.
(20) Connect the electrical connectors (4100KS-A and 4100KS-B) to the electrical junction box.
(21) Remove the blanking caps from the nipples.
(22) Connect the left or right interface hydraulic hoses.
(a) FOR [1000EM1] (ENGINE-1)
(Ref. AMM TASK 29-11-49-400-009).
(b) FOR [1000EM2] (ENGINE-2)
(Ref. AMM TASK 29-13-49-400-009).
Subtask 78-32-11-820-055-A ** ON A/C NOT FOR ALL Subtask 78-32-11-820-051-A ** ON A/C NOT FOR ALL Subtask 78-32-11-410-058-A ** ON A/C NOT FOR ALL Subtask 78-32-11-440-053-A ** ON A/C NOT FOR ALL Subtask 78-32-11-942-050-A ** ON A/C NOT FOR ALL CAUTION:
MAKE SURE THE BLOCKER DOORS ARE LOCKED TO PREVENT BLOCKER DOOR DAMAGE.
CAUTION:
THE HALF DOOR WEIGHS APPROXIMATELY 440 POUNDS (200 KG). MAKE SURE THAT THE CRANE CAN LIFT 440 POUNDS (200 KG). HOWEVER, THE FORCE USED TO LIFT THE HALF DOOR SHOULD NOT BE MORE THAN 661 POUNDS (300 KG). IF THE LIFTING FORCE IS TOO MUCH THE SCREWS IN THE LIFTING BEAM CAN BREAK AND THE HALF DOOR WILL FALL AND BE DAMAGE.
(1) Apply a thin layer of molykote G rapid (Material No.CP2104) on the hinge pins. (2) Move the half door to the 10 degrees opening position.
(3) Put thrust reverser in a position to align the hinges with the hinges on the pylon.
(4) Attach the half door to the pylon with the hinge pins, the washers and the nuts.
(5) Tighten the nut as required to remove the clearance between the washer and hinge bushing.
(6) Align the cotter pin holes.
NOTE: If the cotter pin holes are not align, the nut can be untightened of 1/6 of turn to align the bolt hole with a slot in the nut.
(7) Install the new AIPC 78-32-11-01-050 COTTER PIN (10). (8) Disconnect the two shackles of the handling sling.
(9) Remove the handling sling from the two upper hoist points of the half door.
(10) Move the half door:
WARNING:
YOU MUST HOLD EACH HALF DOOR OPENED WITH THE HOLD-OPEN ROD TO PREVENT SERIOUS INJURY DUE TO ACCIDENTAL CLOSURE.
(a) Move the half door to 45 degrees position with the handling sling. (11) Install the hold-open rods as follows:
(a) Disconnect the quick release pin that attach the hold-open rod to the upper bracket.
(b) Attach the hold-open rod to the attach bracket of the forward frame with the quick-release pin.
(12) Install the left or right door-opening actuators (Ref. AMM TASK 78-36-51-400-041).
(13) Close the left and right thrust reverser half doors (Ref. AMM TASK 78-36-00-410-040).
(14) Remove the lifting strap bracket and lifting strap from the middle lower hoist point.
(15) Install the hoist plug on the lower hoist point.
(16) Attach the hinge access panel to the top of the half door with 13 screws.
(17) TORQUE the screws to between 45 and 35 lbf.in (0.51 and 0.40 m.daN )
. (18) Remove the blanking caps from the electrical connectors.
(19) Connect the right electrical harness connector to the electrical junction box.
(20) Connect the electrical connectors (4100KS-A and 4100KS-B) to the electrical junction box.
(21) Remove the blanking caps from the nipples.
(22) Connect the left or right interface hydraulic hoses.
(a) FOR [1000EM1] (ENGINE-1)
(Ref. AMM TASK 29-11-49-400-009).
(b) FOR [1000EM2] (ENGINE-2)
(Ref. AMM TASK 29-13-49-400-009).
G. Remove the access platform(s).
Subtask 78-32-11-869-053-A ** ON A/C NOT FOR ALL H. Make sure that the work area is clean and clear of tools and other items.
Subtask 78-32-11-865-051-A ** ON A/C NOT FOR ALL I. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 78-32-11-710-050-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
J. Bleed the air from the thrust reverser hydraulic system. (Ref. AMM TASK 78-30-00-710-040)
(1) Check the hydraulic connections for leakage.
5. Close-up(1) Check the hydraulic connections for leakage.
Subtask 78-32-11-410-059-A ** ON A/C NOT FOR ALL
A. Close Access
(1) 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
(2) Remove the WARNING NOTICE(S).
Subtask 78-32-11-820-050-A ** ON A/C NOT FOR ALL Subtask 78-32-11-710-051-A ** ON A/C NOT FOR ALL (1) 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
(2) Remove the WARNING NOTICE(S).
C. Do an operational test of the thrust reverser system (Ref. AMM TASK 78-31-00-710-042). Do 10 deploy-to-stow cycles to air bleed the thrust reverser hydraulic circuit.
NOTE: As an alternative procedure you can do this operational test without the CFDS:
- first method with engine not running (Ref. AMM TASK 78-31-00-710-043)
- second method with engine running (Ref. AMM TASK 78-31-00-710-043)