Outer Outlet Guide Vanes (OGVs) Platforms - Bumper Replacement (part removed) [CFML]

TASK 72-24-11-960-801-A
Outer Outlet Guide Vanes (OGVs) Platforms - Bumper Replacement (part removed)

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.

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

ZONE: 400

1. Reason for the Job
This procedure gives instructions to replace the bumpers on the outer OGVs platforms.

NOTE: You can use equivalent alternatives for standard tools, equipment and consumable materials.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP1041)	isopropyl alcohol
(Material No.CP2242)	RTV 732
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
1	BUMPER	EIPC 72-24-00-01-091
1	BUMPER	EIPC 72-24-00-01-121
1	BUMPER	EIPC 72-24-00-01-151
1	BUMPER	EIPC 72-24-00-01-181
1	BUMPER	EIPC 72-24-00-01-211
1	BUMPER	EIPC 72-24-00-01-241
1	BUMPER	EIPC 72-24-00-01-271
1	BUMPER	EIPC 72-24-00-01-301
1	BUMPER	EIPC 72-24-00-01-331
1	BUMPER	EIPC 72-24-00-01-361
1	BUMPER	EIPC 72-24-00-01-391
1	BUMPER	EIPC 72-24-00-01-421
1	BUMPER	EIPC 72-24-00-01-451
1	BUMPER	EIPC 72-24-00-01-481
1	BUMPER	EIPC 72-24-00-01-511
1	BUMPER	EIPC 72-24-00-01-541
1	BUMPER	EIPC 72-24-00-01-571
1	BUMPER	EIPC 72-24-00-01-601
1	BUMPER	EIPC 72-24-00-01-631
1	BUMPER	EIPC 72-24-00-01-661
1	BUMPER	EIPC 72-24-00-01-691
1	BUMPER	EIPC 72-24-00-01-721
1	BUMPER	EIPC 72-24-00-01-751

E. 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 72-24-11-000-801-A	Removal of the Outer Outlet Guide Vane (OGV) Platform
TASK 72-24-11-210-801-A	Visual Inspection of the Outlet Guide Vane Platforms
TASK 72-24-11-400-801-A	Installation of the Outer Outlet Guide Vane (OGV) Platform
TASK 78-30-00-040-809-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-809-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-806-A	Opening of the Thrust Reverser Cowl Doors
TASK 78-36-00-410-806-A	Closing of the Thrust Reverser Cowl Doors
Outer OGV Platforms

3. Job Set-up
Subtask 72-24-11-941-054-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 72-24-11-010-060-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.

Subtask 72-24-11-040-054-A

C. Deactivation of the Thrust Reverser (T/R) 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 T/R system for maintenance (Ref. AMM TASK 78-30-00-040-809).

Subtask 72-24-11-010-061-A

D. Get Access
(1) Open the T/R cowl doors (Ref. AMM TASK 78-36-00-010-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR.
(2) Remove the outer OGV platform (Ref. AMM TASK 72-24-11-000-801).

Subtask 72-24-11-990-051-A

E. The subsequent table gives a list of the Illustrated Parts Catalog (IPC) CSN - Designation (AMM Item) and the Quantity which corresponds.
Table 801 - List of Expendable Parts

IPC CSN - Designation (AMM Item)	Quantity
EIPC 72-24-00-01-091 BUMPER (1)	AR
EIPC 72-24-00-01-121 BUMPER (1)	AR
EIPC 72-24-00-01-151 BUMPER (1)	AR
EIPC 72-24-00-01-181 BUMPER (1)	AR
EIPC 72-24-00-01-211 BUMPER (1)	AR
EIPC 72-24-00-01-241 BUMPER (1)	AR
EIPC 72-24-00-01-271 BUMPER (1)	AR
EIPC 72-24-00-01-301 BUMPER (1)	AR
EIPC 72-24-00-01-331 BUMPER (1)	AR
EIPC 72-24-00-01-361 BUMPER (1)	AR
EIPC 72-24-00-01-391 BUMPER (1)	AR
EIPC 72-24-00-01-421 BUMPER (1)	AR
EIPC 72-24-00-01-451 BUMPER (1)	AR
EIPC 72-24-00-01-481 BUMPER (1)	AR
EIPC 72-24-00-01-511 BUMPER (1)	AR
EIPC 72-24-00-01-541 BUMPER (1)	AR
EIPC 72-24-00-01-571 BUMPER (1)	AR
EIPC 72-24-00-01-601 BUMPER (1)	AR
EIPC 72-24-00-01-631 BUMPER (1)	AR
EIPC 72-24-00-01-661 BUMPER (1)	AR
EIPC 72-24-00-01-691 BUMPER (1)	AR
EIPC 72-24-00-01-721 BUMPER (1)	AR
EIPC 72-24-00-01-751 BUMPER (1)	AR

4. Procedure

WARNING: REFER TO THE PRODUCT LABEL AND THE MANUFACTURER'S (MATERIAL) SAFETY DATA SHEET (SDS) FOR INSTRUCTIONS ON THE HAZARDS, STORAGE, SAFE HANDLING AND CORRECT USE OF CONSUMABLE PRODUCTS.

Subtask 72-24-11-020-052-A

A. Remove and discard the bumper (1) that you need to replace.

Subtask 72-24-11-210-053-A

B. Do a visual inspection of the hole and the adjacent area where you will install a new bumper (1). Deviation to a correct condition is not permitted.
(1) If you find sign of glue in the hole, the part is not repairable with this procedure.

Subtask 72-24-11-110-051-A

C. Clean the hole where you will bond a new bumper (1), the adjacent area and the new bumper (1) with a clean Textile-Lint free Cotton - (Material No.14SBA1) soaked in the isopropyl alcohol (Material No.CP1041) .

Subtask 72-24-11-340-051-A

D. Bond the new bumper (1) (Ref. to Table 801) as follows:
(1) Apply thin coats of RTV 732 (Material No.CP2242) on the bumper body.
(2) Push and turn the bumper (1) in the platform until the stop.
(3) If necessary, equalize and clean with a clean Textile-Lint free Cotton - (Material No.14SBA1) soaked in the isopropyl alcohol (Material No.CP1041) the overflow of adhesive.
(4) Keep the bumper (1) in contact and let polymerize during 24 hours.

Subtask 72-24-11-210-054-A

E. Do a visual inspection of the part (Ref. AMM TASK 72-24-11-210-801).

5. Close-up
Subtask 72-24-11-942-051-A

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.

Subtask 72-24-11-410-058-A

B. Close Access
(1) Install the outer OGV platform (Ref. AMM TASK 72-24-11-400-801).
(2) Close the T/R cowl doors (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR.

Subtask 72-24-11-440-053-A

C. Do the reactivation of the T/R system after maintenance (Ref. AMM TASK 78-30-00-440-809).

Subtask 72-24-11-410-059-A

D. 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 WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:53:15 UTC