Removal of the High Speed Tape (Track Lock Cover Damaged or Missing) [PW11]

TASK 78-32-00-440-809-A
Removal of the High Speed Tape (Track Lock Cover Damaged or Missing)

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
CDL 78-28
Tertiary Lock Cover Plate
To remove the high speed tape and install the new track lock cover.
2. Job Set-up Information
A. Consumable Materials

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

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 473AL, 473AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 483AL, 483AR

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 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-32-38-400-801-A	Installation of the Track Lock Cover
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
Track Lock Cover

3. Job Set-up
Subtask 78-32-00-941-110-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 78-32-00-010-159-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)
473AL 473AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
483AL 483AR

Subtask 78-32-00-040-109-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 maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 78-32-00-010-160-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the left thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL

4. Procedure
Subtask 78-32-00-020-061-A ** ON A/C NOT FOR ALL

A. Removal of the High Speed Tape (Track Lock Cover Damaged or Missing)
(1) Carefully, remove the high speed tape from the latch beam.
(2) Apply material as follows:

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

(a) Clean the mating surfaces with a clean lint-free cotton cloth (Material No.PU1-0001) and PU2-0001alcohol, isopropyl.
(b) Remove the PU2-0001alcohol, isopropyl with a clean lint-free cotton cloth (Material No.PU1-0001) before it becomes dry.
(3) Do an inspection of the mating and adjacent surfaces on the latch beam.
(a) Make sure that the mating surfaces and surface finishes are in the correct condition.

Subtask 78-32-00-420-075-A ** ON A/C NOT FOR ALL

B. Installation of the new Track Lock Cover on the Latch Beam with the four Bolts. (Ref. AMM TASK 78-32-38-400-801)

[Rev.10 from 2021] 2026.04.01 03:32:01 UTC