Removal of the Fan Outlet Guide Vane (OGV) Doublets [CFMB]

TASK 72-23-00-000-008-A
Removal of the Fan Outlet Guide Vane (OGV) Doublets

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 1M(3 FT)
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 72-23-00-000-026-A	Removal of the Aft Acoustical Panels
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
Removal and Installation of the Fan Outlet Guide Vane Doublets

3. Job Set-up
Subtask 72-23-00-941-071-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 72-23-00-010-083-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(4) Put the ACCESS PLATFORM 1M(3 FT) in position.

Subtask 72-23-00-040-061-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 72-23-00-010-094-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser doors: (Ref. AMM TASK 78-36-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

4. Procedure
Subtask 72-23-00-020-059-A ** ON A/C NOT FOR ALL

A. Removal of the Fan Outlet Guide Vane (OGV) Doublets (Rearward)
(1) Remove the aft acoustical panels (Ref. AMM TASK 72-23-00-000-026)
(2) Remove the sealant which covers the three bolts (20) and (30) in the outer platform recesses. If necessary only.
(3) Remove the three bolts (20) and (30) which attach the OGV doublet (10) platform.
(4) Lower the OGV doublet (10) inner platform down into the OGV inner shroud.
(5) Move the OGV doublet (10) outer platform rearward at the necessary angle to disengage the inner platform from its recess.
(6) Remove the OGV doublet (10).
(7) Remove the sealant which remains on the acoustical panels.

[Rev.10 from 2021] 2026.04.01 02:41:25 UTC