Removal of the Left Thrust-Reverser Cascades - ENG NO. 2 [PW11]

TASK 78-32-30-000-802-A
Removal 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 Job
Self 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	AR	COVER - PROTECTION

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
437AL, 448AR

C. Referenced Information

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 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-32-00-860-802-A	Manual Extension of the Thrust-Reverser Translating Sleeves
Left Thrust-Reverser Cascades - Engine No. 2

3. Job Set-up
Subtask 78-32-30-941-053-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 78-32-30-010-055-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl door (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
437AL 448AR
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 78-32-30-040-053-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser for Maintenance

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) Do the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 78-32-30-860-056-A ** ON A/C NOT FOR ALL

D. Extend the left thrust-reverser translating sleeve (Ref. AMM TASK 78-32-00-860-802).

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 78-32-30-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Left Thrust-Reverser Cascades - Engine No. 2.
(1) Remove the LH thrust reverser cascades as follows:
(a) Remove the 23 bolts (1) and 23 washers (2) that attach the LH upper cascade (3) to the torque box and the cascade ring.
(b) Remove the LH upper cascade (3) from the thrust reverser half.
(c) Remove the 23 bolts (1) and 23 washers (2) that attach the LH middle cascade (4) to the torque box and the cascade ring.
(d) Remove the LH middle cascade (4) from the thrust reverser half.
(e) Remove the nine bolts (1) and nine washers (2) that attach the LH lower cascade (5) to the torque box and the cascade ring.
(f) Remove the LH lower cascade (5) from the thrust reverser half.
(2) Installation of the protection covers

CAUTION: INSTALL PROTECTION COVERS ON ALL THE OPENINGS IMMEDIATELY TO PREVENT DAMAGE TO THE ENGINE.

(a) Make sure that you install COVER - PROTECTION as necessary to prevent damage to the engine.

[Rev.10 from 2021] 2026.04.01 03:32:49 UTC