Removal of the Thrust Reverser Blocker Doors [PW11]

TASK 78-32-33-000-801-A
Removal of the Thrust Reverser Blocker Doors

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)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.PU1-0010)	adhesive tape

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL, 462AR

D. 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 78-32-32-000-801-A	Removal of the Thrust Reverser Blocker Door Drag Links
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
Thrust Reverser Blocker Doors PRE SB GRAA320NEO-A- 78-30-0012-00001-930A-D

3. Job Set-up
Subtask 78-32-33-941-050-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 78-32-33-010-050-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 an ACCESS PLATFORM 2M (6 FT) in position.

Subtask 78-32-33-040-050-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 ground maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 78-32-33-010-051-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the thrust-reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR.
(2) If necessary, put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

4. Procedure

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

Subtask 78-32-33-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Thrust Reverser Blocker-Doors

NOTE: These procedures are for the left thrust-reverser blocker-doors. The right side is opposite.

(1) Use the adhesive tape (Material No.PU1-0010) to attach the applicable left thrust-reverser blocker-door in position.
(2) Remove the applicable drag link from the inner fixed structure (Ref. AMM TASK 78-32-32-000-801).

CAUTION: DO NOT EXTEND THE THRUST REVERSER TRANSLATING SLEEVE MORE THAN 13 IN. (330.2 MM) WHEN THE THRUST REVERSER DOOR ON THE INBOARD SIDE IS OPEN. THE TRANSLATING SLEEVE CAN HIT THE SLATS AND CAUSE DAMAGE TO THE COMPONENTS.

(3) Manually deploy the thrust reverser translating sleeve to gain access (Ref. AMM TASK 78-32-00-860-802).
(4) Make sure that the translating sleeve does not hit other components.
(5) Remove the applicable nut (5), washer (4), bushings (3) and bolt (2) that attach the applicable blocker door (1) to the floating clevis fitting. Discard the nut (5).
(6) Remove the applicable nut (6), washers (7), (9) and (10), bushing (8) and bolt (11) that attach the applicable blocker door (1) to the fixed clevis fitting. Write the part numbers, quantity and location of washers (9) for later installation. Discard the nut (6).
(7) Remove the adhesive tape (Material No.PU1-0010) from the blocker door (1).
(8) Remove the applicable blocker door (1) and the drag link from the thrust reverser.
(9) Remove the drag link from the blocker door (1) (Ref. AMM TASK 78-32-32-000-801).

[Rev.10 from 2021] 2026.04.01 03:32:55 UTC