Installation of the Thrust Reverser Align Ramp [PW11]

TASK 71-13-87-400-801-A
Installation of the Thrust Reverser Align Ramp

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

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	Torque wrench: range to between 34 and 31 lbf.in (0.38 and 0.35 m.daN )
No specific	Torque wrench: range to between 215 and 195 lbf.in (2.43 and 2.20 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.PU1-0001)	lint-free cotton cloth
(Material No.PU2-0001)	alcohol, isopropyl
(Material No.PU3-0004)	sealant

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 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 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
Thrust Reverser Align Ramp

3. Job Set-up
Subtask 71-13-87-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 71-13-87-010-052-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

Subtask 71-13-87-040-051-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser System 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) Make sure that you did the deactivation of the thrust reverser system for Ground Maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 71-13-87-010-053-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Make sure that the thrust reverser cowl-doors are open (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

4. Procedure
Subtask 71-13-87-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Thrust Reverser Align Ramp
(1) Install the thrust reverser align ramp assembly (1) and ramp pad (2).

NOTE: The following procedures are for the removal of the left thrust reverser align ramp assembly and ramp pad. Procedures for the removal of the right thrust reverser align ramp assembly and ramp pad are opposite.

(2) Clean the mating surfaces of the ramp assembly (1), ramp pad (2), bolts (6) and (3), washers (5) and nut (4) with a clean lint-free cotton cloth (Material No.PU1-0001) and the PU2-0001alcohol, isopropyl.
(3) Remove the PU2-0001alcohol, isopropyl with a clean lint-free cotton cloth (Material No.PU1-0001) before the PU2-0001alcohol, isopropyl becomes dry.
(4) Apply a layer of the sealant (Material No.PU3-0004) to under the head of the bolts (6) and (3), and mating surfaces of washers (5) and nuts (4).
(5) Attach the ramp pad (2) to the ramp assembly (1) with the two bolts (3).
(6) TORQUE the bolts (3) to between 34 and 31 lbf.in (0.38 and 0.35 m.daN )

.
(7) Make sure that there is sufficient sealant (Material No.PU3-0004) on the mating surfaces. Remove the unwanted sealant (Material No.PU3-0004) with a clean, lint-free cotton cloth (Material No.PU1-0001) .
(8) Install the ramp assembly (1) and ramp pad (2) with two bolts (6), four washers (5) and two nuts (4) to the engine fan case.
(9) TORQUE the nuts (4) to between 215 and 195 lbf.in (2.43 and 2.20 m.daN )

.
(10) Make sure that there is sufficient sealant (Material No.PU3-0004) on the mating surfaces. Remove the unwanted sealant (Material No.PU3-0004) with a clean, lint-free cotton cloth (Material No.PU1-0001) .

5. Close-up
Subtask 71-13-87-410-050-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 71-13-87-440-050-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 71-13-87-410-051-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 WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:33:00 UTC