Detailed Inspection of the Thrust Reverser Primary and Secondary Sliders [CFML]

TASK 78-32-00-220-802-A
Detailed Inspection of the Thrust Reverser Primary and Secondary Sliders

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

ZONE: 400

1. Reason for the Job
Refer to the MPD TASK: 783223-01
DETAILED INSPECTION OF THE THRUST REVERSER PRIMARY AND SECONDARY SLIDERS.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	1	LIGHT SOURCE - INSPECTION
No specific	1	MIRROR - INSPECTION, FLEXIBLE
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 78-30-00-040-807-A	Deactivation of the Thrust Reverser System for Nacelle Maintenance (ICU)
TASK 78-30-00-440-807-A	Reactivation of the Thrust Reverser System after Nacelle Maintenance (ICU)
TASK 78-32-50-010-801-A	Manually Deploy the Translating Cowl
TASK 78-32-50-410-801-A	Manually Stow the Translating Cowl
TASK 78-32-51-210-803-A	General Visual Inspection of the Beams Track Liners and Transcowl Sliders
Detailed Inspection of the Translating Cowl Upper and Lower Primary and Secondary Sliders

3. Job Set-up
Subtask 78-32-00-941-112-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put a WARNING NOTICE(S) in position to tell persons not to operate:

The ENG/MODE selector switch
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

Subtask 78-32-00-010-162-A

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 78-32-00-040-111-A

C. Deactivation of the Thrust Reverser System 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 nacelle maintenance (Ref. AMM TASK 78-30-00-040-807).

Subtask 78-32-00-010-163-A

D. Get Access
(1) Manually deploy the translating cowl (Ref. AMM TASK 78-32-50-010-801).

4. Procedure
Subtask 78-32-00-210-108-A

A. Detailed Inspection of the Translating Cowl Upper and Lower Primary and Secondary Sliders

NOTE: You can use a LIGHT SOURCE - INSPECTION and a MIRROR - INSPECTION, FLEXIBLE to perform this inspection.

(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position when you inspect the upper primary and secondary sliders.
(2) Examine the aft segments of the upper primary sliders (3) and lower primary sliders (4) that you can see for:

Corrosion
Cracks
Wear
Loose, missing or damaged fasteners.

(3) From the forward end of the translating cowl (2), examine the upper secondary sliders (1) and lower secondary sliders (5) that you can see for:

Corrosion
Cracks
Loose or missing Teflon wear strips on the upper secondary sliders (Ref. AMM TASK 78-32-51-210-803)
Wear on the lower secondary slider.

(4) If external damages are found, contact Safran Nacelles.

5. Close-up
Subtask 78-32-00-410-151-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Manually stow the translating cowl (Ref. AMM TASK 78-32-50-410-801):

Subtask 78-32-00-440-103-A

B. Do the reactivation of the thrust reverser system after nacelle maintenance (Ref. AMM TASK 78-30-00-440-807).

Subtask 78-32-00-410-152-A

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:35:40 UTC