DOC AIRBUS | AMM A320FInstallation of the Left Thrust-Reverser Cascades - ENG NO. 2 [PW11]
TASK 78-32-30-400-802-A
Installation of the Left Thrust-Reverser Cascades - ENG NO. 2
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 78-32-30-941-054-A ** ON A/C NOT FOR ALL
Subtask 78-32-30-860-058-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:32:50 UTC
Installation of the Left Thrust-Reverser Cascades - ENG NO. 2
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE 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.
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 2M (6 FT) - ADJUSTABLE |
| No specific | Torque wrench: range to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN )  |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 437AL, 438AR, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| 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 78-32-00-860-802-A | Manual Extension of the Thrust-Reverser Translating Sleeves |
| TASK 78-32-00-860-803-A | Manual Retraction of the Thrust-Reverser Translating Sleeves |
Left Thrust-Reverser Cascades - Engine No. 2Subtask 78-32-30-941-054-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 78-32-30-010-056-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 [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
437AL 448AR
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
Subtask 78-32-30-040-054-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 [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
437AL 448AR
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
C. Deactivation of the Thrust Reverser System for Maintenance
Subtask 78-32-30-860-057-A ** ON A/C NOT FOR ALL 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 maintenance (Ref. AMM TASK 78-30-00-040-805). D. Make sure that the left thrust-reverser translating sleeve is extended (Ref. AMM TASK 78-32-00-860-802).
4. ProcedureCAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 78-32-30-420-051-A ** ON A/C NOT FOR ALL A. Installation of the Left Thrust-Reverser Cascades - Engine NO. 2
(1) Removal of the protection covers
(2) Install the LH upper cascade (3) on the torque box and the cascade ring. Use the 23 bolts (1) and 23 washers (2). Do not torque the bolts at this time.
(3) Tighten the bolts (1) on the LH upper cascade (3).
(a) TORQUE the opposite pair of bolts (1) in the center of the LH upper cascade (3) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN ).
.
(c) TORQUE the bolts (1) in opposite pairs from the center of the LH upper cascade(3) to the bottom of the cascade to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN ).
(4) Install the LH middle cascade (4) on the torque box and the cascade ring. Use the 23 bolts (1) and 23 washers (2). Do not torque the bolts at this time.
(5) Tighten the bolts (1) on the LH middle cascade (4).
(a) TORQUE the opposite pair of bolts (1) in the center of the LH middle cascade (4) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN ).
1 TORQUE the bolts (1) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN ).
(c) TORQUE the bolts (1) in opposite pairs from the center of the LH middle cascade (4) to the bottom of the cascade.
1 TORQUE the bolts (1) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN ).
(6) Install the LH lower cascade (5) on the torque box and the cascade ring. Use the nine bolts (1) and nine washers (2). Do not torque the bolts at this time.
(7) Tighten the bolts (1) on the LH lower cascade (5).
(a) TORQUE the opposite pair of bolts (1) in the center of the LH lower cascade (5) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN ).
1 TORQUE the bolts (1) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN ).
(c) TORQUE the bolts (1) in opposite pairs from the center of the LH lower cascade (5) to the bottom of the cascade.
1 TORQUE the bolts (1) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN ).
5. Close-up(1) Removal of the 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 LH upper cascade (3) on the torque box and the cascade ring. Use the 23 bolts (1) and 23 washers (2). Do not torque the bolts at this time.
(3) Tighten the bolts (1) on the LH upper cascade (3).
(a) TORQUE the opposite pair of bolts (1) in the center of the LH upper cascade (3) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN )
. NOTE: When you torque the opposite pairs of bolts (1), first torque the forward bolt (1) on the torque box. Then torque the aft bolt on the cascade ring.
(b) TORQUE the bolts (1) in opposite pairs from the center of the LH upper cascade (3) to the top of the cascade to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN ) . (c) TORQUE the bolts (1) in opposite pairs from the center of the LH upper cascade(3) to the bottom of the cascade to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN )
. (4) Install the LH middle cascade (4) on the torque box and the cascade ring. Use the 23 bolts (1) and 23 washers (2). Do not torque the bolts at this time.
(5) Tighten the bolts (1) on the LH middle cascade (4).
(a) TORQUE the opposite pair of bolts (1) in the center of the LH middle cascade (4) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN )
. NOTE: When you torque the opposite pairs of bolts (1), first torque the forward bolt on the torque box. Then torque the aft bolt on the cascade ring.
(b) TORQUE the bolts (1) in opposite pairs from the center of the LH middle cascade (4) to the top of the cascade. 1 TORQUE the bolts (1) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN )
. (c) TORQUE the bolts (1) in opposite pairs from the center of the LH middle cascade (4) to the bottom of the cascade.
1 TORQUE the bolts (1) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN )
. (6) Install the LH lower cascade (5) on the torque box and the cascade ring. Use the nine bolts (1) and nine washers (2). Do not torque the bolts at this time.
(7) Tighten the bolts (1) on the LH lower cascade (5).
(a) TORQUE the opposite pair of bolts (1) in the center of the LH lower cascade (5) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN )
. NOTE: When you torque the opposite pairs of bolts (1), first torque the forward bolt (1) on the torque box. Then torque the aft bolt on the cascade ring.
(b) TORQUE the bolts (1) in opposite pairs from the center of the LH lower cascade (5) to the top of the cascade. 1 TORQUE the bolts (1) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN )
. (c) TORQUE the bolts (1) in opposite pairs from the center of the LH lower cascade (5) to the bottom of the cascade.
1 TORQUE the bolts (1) to between 82.5 and 75 lbf.in (0.93 and 0.85 m.daN )
. Subtask 78-32-30-860-058-A ** ON A/C NOT FOR ALL
A. Retractation of the Left Thrust-Reverser Translating Sleeve
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Manually retract the left thrust-reverser translating sleeve (Ref. AMM TASK 78-32-00-860-803).
Subtask 78-32-30-440-052-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Manually retract the left thrust-reverser translating sleeve (Ref. AMM TASK 78-32-00-860-803).
B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 78-32-30-410-052-A ** ON A/C NOT FOR ALL C. Close Access
(1) Close the fan cowl door (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
437AL 438AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
(1) Close the fan cowl door (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
437AL 438AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).