Removal of the Thrust Reverser Blocker Door Drag Links [PW11]

TASK 78-32-32-000-801-A
Removal of the Thrust Reverser Blocker Door Drag Links

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.

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

ZONE: 400

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	1	SCREWDRIVER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 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
TASK 78-32-00-860-803-A	Manual Retraction of the Thrust-Reverser Translating Sleeves
Left Thrust Reverser Blocker Door Drag Links
Right Thrust Reverser Blocker Door Drag Links

3. Job Set-up
Subtask 78-32-32-941-050-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 78-32-32-010-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 78-32-32-040-050-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser for Maintenance

WARNING: MAKE SURE THAT YOU DO THE DEACTIVATION OF THE THRUST REVERSER BEFORE YOU DO MAINTENANCE WORK ON OR AROUND THE THRUST REVERSER. IF YOU DO NOT DO THIS PROCEDURE, THERE IS A RISK OF UNWANTED OPERATION AND THUS OF INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.

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

NOTE: To get access to the drag links, you can also go into the inner thrust reverser or manually move the translating sleeve (Ref. AMM TASK 78-32-00-860-802) or (Ref. AMM TASK 78-32-00-860-803).

4. Procedure

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

Subtask 78-32-32-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Thrust Reverser Blocker Door Drag Links
(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)

Left Thrust Reverser Blocker Door Drag Links ** ON A/C NOT FOR ALL

CAUTION: PUT A PROTECTION BLANKET ON THE THRUST REVERSER C-DUCT WHEN YOU GET ACCESS TO THE REAR SIDE OF THE BLOCKER DOORS. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE THRUST REVERSER C-DUCT CAN OCCUR.

(a) Manually deploy the left thrust-reverser translating-sleeve a short distance to release pressure on the drag link (1), (2) or (3) (Ref. AMM TASK 78-32-00-860-802).
(b) Remove the T-bolt (5) and the cap (4) from the drag link fitting on the inner fixed structure. Discard the T-bolt (5).
(c) Remove the drag link (1), (2) or (3) from the drag link fitting on the inner fixed structure.
(d) Hold the blocker door tightly. With the SCREWDRIVER or an equivalent tool, open the spring leaf on the blocker door until you have access to the nut (6).
(e) Keep the spring leaf in position with the SCREWDRIVER or an equivalent. Remove the bolt (9), the washers (7) and (8), and the nut (6) that attach the drag link (1), (2) or (3) to the blocker door. Discard the nut (6).
(f) Remove the drag link (1), (2) or (3) from the housing in the blocker door.
(3)

Right Thrust Reverser Blocker Door Drag Links ** ON A/C NOT FOR ALL

(a) Manually deploy the right thrust-reverser translating-sleeve a short distance to release pressure on the drag link (10) or (11) (Ref. AMM TASK 78-32-00-860-802).
(b) Remove the T-bolt (5) and cap (4) from the drag link fitting on the inner fixed structure. Discard the T-bolt (5).
(c) Remove the drag link (10) or (11) from the drag link fitting on the inner fixed structure.
(d) Hold the blocker door tightly. With the SCREWDRIVER or an equivalent tool, open the spring leaf on the blocker door until you have access to the nut (6).
(e) Keep the spring leaf in position with the SCREWDRIVER or an equivalent. Remove the bolt (9), the washers (7) and (8), and the nut (6) that attach the drag link (10) or (11) to the blocker door. Discard the nut (6).
(f) Remove the drag link (10) or (11) from the housing in the blocker door.

[Rev.10 from 2021] 2026.04.01 03:32:53 UTC