Manual Retraction of the Thrust-Reverser Translating Sleeves [PW11]

TASK 78-32-00-860-803-A
Manual Retraction of the Thrust-Reverser Translating Sleeves

WARNING: ALWAYS USE APPLICABLE GLOVES TO TOUCH HOT PARTS. HOT PARTS CAN CAUSE INJURY TO PERSONS.

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)
No specific	1	EXTENSION 3/8 IN - SQUARE DRIVE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
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 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 78-31-00-710-805-A	Operational Test of Thrust Reverser with MCDU
TASK 78-31-00-710-805-A-01	Thrust Reverser Cycling Test (Engine Running)
TASK 78-37-00-440-801-A	Reactivation of the Thrust Reverser Actuation System (TRAS) Track Lock
Manual Extension/Retraction of the Thrust-Reverser Translating Sleeves

3. Job Set-up
Subtask 78-32-00-860-078-A ** ON A/C NOT FOR ALL

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

Subtask 78-32-00-010-092-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (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) Make sure that the ACCESS PLATFORM 2M (6 FT) is in place.

Subtask 78-32-00-040-071-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) Make sure that the thrust reverser system for maintenance is deactivated (Ref. AMM TASK 78-30-00-040-805).

4. Procedure
Subtask 78-32-00-860-059-A ** ON A/C NOT FOR ALL

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

A. Manual Retraction of the Thrust-Reverser Translating Sleeves

NOTE: This procedure is shown for the left thrust reverser door. The procedure is the same for the right thrust reverser door.

(1) Manually retract the applicable translating sleeve.

CAUTION: DO NOT RETRACT THE THRUST REVERSER TRANSLATING SLEEVE WITH THE THRUST REVERSER HALVES OPEN. DAMAGE TO EQUIPMENT CAN OCCUR.

(a) Turn the manual drive unit lever to the unlocked position if necessary.
(b) Remove the 636-3000-28GSE TR ACT. PRIM. LCK PIN track lock mechanism pin from the TRAS feedback locking actuator.
(c) Remove the 636-3000-28GSE TR ACT. PRIM. LCK PIN track lock mechanism pin from the TRAS locking actuator.
(d) Put the EXTENSION 3/8 IN - SQUARE DRIVE in the manual drive unit square drive tool engagement.

NOTE: A maximum speed of 600 rpm is permitted for the manual drive unit.

(e) Turn the manual drive unit to retract the translating sleeve.

NOTE: Turn the manual drive unit on the left thrust reverser half clockwise to retract the translating sleeve. Turn the manual drive unit on the right thrust reverser half counterclockwise to retract the translating sleeve.

NOTE: The manual drive unit has a torque limiter breakout torque between 70 lbf.in (0.79 m.daN) and 96 lbf.in (1.08 m.daN).

(f) Let the TRAS feedback locking actuator and TRAS locking actuator levers return to the locked position.
(g) Remove the EXTENSION 3/8 IN - SQUARE DRIVE square drive tool from the manual drive unit.
(h) Make sure that the manual drive unit lever is in the unlocked position.
(2) Reactivate the TRAS track lock (Ref. AMM TASK 78-37-00-440-801).

5. Close-up
Subtask 78-32-00-440-067-A ** ON A/C NOT FOR ALL

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

Subtask 78-32-00-860-060-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) Remove the access platform(s).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) 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
(4) Remove the WARNING NOTICE(S).

Subtask 78-32-00-710-055-A ** ON A/C NOT FOR ALL

C. Test
(1) Do the operational test of the thrust reverser system with the Multipurpose Control and Display Unit (MCDU) (Ref. AMM TASK 78-31-00-710-805).

[Rev.10 from 2021] 2026.04.01 03:31:51 UTC