Removal of the Thrust Reverser Keepers [PW11]

TASK 78-32-75-000-802-A
Removal of the Thrust Reverser Keepers

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.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

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

B. 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 78-32-38-000-801-A	Removal of the Track Lock Cover
TASK 78-32-71-000-802-A	Removal of the Right Thrust Reverser Thermal Insulation Blankets
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
Thrust Reverser Keepers
Thrust Reverser Thermo Shield, Track Lock Cover and Latch Beam Panel

3. Job Set-up
Subtask 78-32-75-941-053-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 78-32-75-010-058-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

Subtask 78-32-75-040-053-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser for Ground 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 78-32-75-010-059-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the right thrust reverser cowl-door (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
462AR

4. Procedure
Subtask 78-32-75-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Thrust Reverser Keepers
(1) Remove the No. 1 latch keeper.
(a) Remove the four bolts (1) that attach the thermo-shield (2) to the latch beam.
(b) Remove the nut (3), washer (4), nut (5), retention cap (6), inner fail-safe pin (7) and outer fail-safe pin (8) from the latch beam.
(2) Remove the No. 2 latch keeper.
(a) Remove the right aft latch beam blanket from the inner fixed structure (Ref. AMM TASK 78-32-71-000-802).
(b) Remove the nut (9), washers (10) and (11), and bolt (12) from the latch beam.
(3) Remove the No. 3 latch keeper.
(a) Remove the track lock cover (Ref. AMM TASK 78-32-38-000-801).
(b) Remove the nut (15), washers (16) and (17) and bolt (18) from the latch beam.
(4) Remove the No. 4 latch keeper.
(a) Remove the latch beam panel (19).
1 Remove the four bolts (20) that attach the latch beam panel (19) to the latch beam.
2 Remove the latch beam panel (19) from the latch beam.
(b) Remove the nut (21), washers (22) and (23) and bolt (24) from the latch beam.
(5) Remove the No. 5 latch keeper.
(a) Remove the right lower aft barrel blanket from the inner fixed structure (Ref. AMM TASK 78-32-71-000-802).
(b) Remove the nut (25), washers (26) and (27) and bolt (28) from the aft latch housing.

[Rev.10 from 2021] 2026.04.01 03:33:51 UTC