Adjustment of the Thrust Reverser Blocker Doors [PW11]

TASK 78-32-33-820-801-A
Adjustment 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.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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)
No specific	1	SCREWDRIVER

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.PU5-0005)	anti-seize compound
(Material No.PU5-0005A)	anti-seize compound
(Material No.PU5-0005B)	anti-seize compound

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
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 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
TASK 78-32-32-000-801-A	Removal of the Thrust Reverser Blocker Door Drag Links
TASK 78-32-32-400-801-A	Installation of the Thrust Reverser Blocker Door Drag Links
TASK 78-32-33-000-801-A	Removal of the Thrust Reverser Blocker Doors
TASK 78-32-33-400-801-A	Installation of the Thrust Reverser Blocker Doors
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
Thrust Reverser Blocker Door Adjustment
Thrust Reverser Blocker Door Adjustment

3. Job Set-up
Subtask 78-32-33-941-052-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 78-32-33-010-054-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 78-32-33-040-052-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 78-32-33-010-055-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) Extension of the left thrust-reverser translating sleeve.

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.

(a) Manually deploy the thrust reverser translating sleeve to approximately 13 in. (330.20 mm) to get access (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 78-32-33-820-051-A ** ON A/C NOT FOR ALL

A. Adjustment of the thrust reverser blocker doors

NOTE: This procedure gives instructions to adjust the blocker doors on the engine no. 1 left thrust reverser half. The procedure for the engine no. 1 right thrust reverser half and thrust reverser halves on engine no. 2 is the same.

(1) Make sure that the translating sleeves are fully retracted (Ref. AMM TASK 78-32-00-860-803).
(2) Adjust the clearances between the thrust reverser blocker doors and adjacent structure.
(a) Measure the clearances between the blocker doors and adjacent structure.
1 Make sure that the clearances between the blocker doors and adjacent structure are in the tolerances shown in X1 on the figure:

Thrust Reverser Blocker Door Adjustment ** ON A/C NOT FOR ALL

(b) If the clearances between the blocker doors and adjacent structure are not in tolerances shown in X1 of the figure:

Thrust Reverser Blocker Door Adjustment ** ON A/C NOT FOR ALL

Do the steps that follow:

Thrust Reverser Blocker Door Adjustment ** ON A/C NOT FOR ALL

1 Remove the applicable blocker door from the thrust reverser (Ref. AMM TASK 78-32-33-000-801).
2 Adjust the number or type of washers (1) as necessary until the clearances between the blocker door and the adjacent structure are in the tolerances shown in the figure:

Thrust Reverser Blocker Door Adjustment ** ON A/C NOT FOR ALL

NOTE: You can replace the washer (1) with a S700W0131T4H8 or S700W0131T4E8 to adjust the clearances between the blocker door and the adjacent structure. You can also add a second S700W0131T4H8 or S700W0131T4E8 to adjust the clearances.

3 Make sure that the washers (1) are on the same prong of the clevis as the anti-rotational bushing, but on the inner side.
4 Install the blocker door back on the translating sleeve (Ref. AMM TASK 78-32-33-400-801).
(3) Adjust the steps of the thrust reverser blocker doors.
(a) Measure the height between the blocker doors and adjacent structure.
1 Make sure that the height between the blocker doors and adjacent structure is in the tolerances shown in X2 of the figure:

Thrust Reverser Blocker Door Adjustment ** ON A/C NOT FOR ALL

(b) If the height between the blocker doors and adjacent structure is not in the tolerances shown in X2 of the figure:

Thrust Reverser Blocker Door Adjustment ** ON A/C NOT FOR ALL

Do the steps that follow:

Thrust Reverser Blocker Door Adjustment ** ON A/C NOT FOR ALL

1 Remove the applicable drag link from the applicable blocker door (Ref. AMM TASK 78-32-32-000-801).
2 Adjust the height of the applicable blocker door as follows:
a Remove the screw (2), washers (4) and bumper pad (3).
b Adjust the number of washers (4) as necessary until the height between the blocker door and the adjacent structure is in the tolerances shown in the figure:

Thrust Reverser Blocker Door Adjustment ** ON A/C NOT FOR ALL

c Apply anti-seize compound (Material No.PU5-0005) to the threads of the screw (2).

NOTE: You can use anti-seize compound (Material No.PU5-0005A) or anti-seize compound (Material No.PU5-0005B) as an alternative to anti-seize compound (Material No.PU5-0005) .
Refer to the instruction of the manufacturer.

d Install the bumper pad (3) with the screw (2) and washers (4).
e Tighten with your hand the screw (2) until there is no space between the bumper pad (3) and washers (4). Tighten the screw (2) 1/8 more of a turn.

Only use a hand SCREWDRIVER to tighten the screw (2).
Do not use a motor-driven screwdriver.

3 Install the applicable drag link back on the applicable blocker door (Ref. AMM TASK 78-32-32-400-801).

5. Close-up
Subtask 78-32-33-410-052-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR

Subtask 78-32-33-440-051-A ** ON A/C NOT FOR ALL

B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 78-32-33-410-053-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:32:57 UTC