Blending of OGV [CFMI]

TASK 72-23-00-320-001-A
Blending of OGV

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 2M (6 FT) - ADJUSTABLE
No specific	1	FILE - SMOOTH
No specific	1	STONE - SILICON CARBIDE ABRASIVE, GRADE C150L8V
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP1039)	acetone
(Material No.CP1041)	isopropyl alcohol
(Material No.CP2011)	stoddard solvent
(Material No.CP2034)	alodine 1200
(Material No.CP2189)	durite G422
(Material No.CP2191)	durite G421
(Material No.CP2559)	ardrox 552
(Material No.CP2560)	turco ind 79
(Material No.CP2566)	mag-chem teksol
(Material No.CP2584)	degreasol 99 R
(Material No.CP2656)	mag-chem skysol

C. 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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 70-51-00-230-001-A	Fluorescent-Penetrant Inspection-Portable Water-Washable
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 72-23-00-000-001-A	Removal of the Fan Outlet Guide Vane (OGV) and/or OGV Seal
TASK 72-23-00-400-001-A	Installation of the Fan Outlet Guide Vane (OGV) and/or OGV Seal
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-A	Closing of the Thrust Reverser Doors
Fan Outlet Guide Vane Blend Repair Limits

3. Job Set-up
Subtask 72-23-00-941-058-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 72-23-00-010-055-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 72-23-00-040-050-A ** ON A/C NOT FOR ALL

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

Subtask 72-23-00-010-058-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 72-23-00-010-062-A ** ON A/C NOT FOR ALL

A. For minor repair on leading edge, blending can be performed on wing. For extensive repair, remove OGV (Ref. AMM TASK 72-23-00-000-001).

Subtask 72-23-00-220-050-A ** ON A/C NOT FOR ALL

B. Check for dimensions and location of defects on both edges and compare with repair limits.

Subtask 72-23-00-320-050-A ** ON A/C NOT FOR ALL

C. Perform blending of defects using a FILE - SMOOTH or a STONE - SILICON CARBIDE ABRASIVE, GRADE C150L8V used dry. For major blend repairs, use strips of durite G422 (Material No.CP2189) for prefinishing or durite G422 (Material No.CP2189) or durite G421 (Material No.CP2191) for blend finishing.

NOTE: Blending and polishing must be span wise, and parallel to the length of the blade.

NOTE: The finish on blended areas must be as close as practical to the original finish.

(1) Remove a minimum of 0.01 in. (0.2 mm) of base metal in addition to depth of defect.

NOTE: Reworked contour must conform to original contour.

Fan Outlet Guide Vane Blend Repair Limits ** ON A/C NOT FOR ALL

Subtask 72-23-00-110-050-A ** ON A/C NOT FOR ALL

D. Clean OGV using isopropyl alcohol (Material No.CP1041) or acetone (Material No.CP1039) or stoddard solvent (Material No.CP2011) or ardrox 552 (Material No.CP2559) or turco ind 79 (Material No.CP2560) or mag-chem teksol (Material No.CP2566) or degreasol 99 R (Material No.CP2584) or mag-chem skysol (Material No.CP2656) .

Subtask 72-23-00-230-050-A ** ON A/C NOT FOR ALL

E. Fluorescent inspect blended area for cracks (Ref. AMM TASK 70-51-00-230-001). No crack is allowed.
(1) If necessary, repeat blending and inspection until no crack is detected.

Subtask 72-23-00-350-050-A ** ON A/C NOT FOR ALL

F. Touch up sulfuric anodizing using alodine 1200 (Material No.CP2034) .

Subtask 72-23-00-410-062-A ** ON A/C NOT FOR ALL

G. Reinstall OGV (Ref. AMM TASK 72-23-00-400-001).

5. Close-up
Subtask 72-23-00-410-055-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 doors (Ref. AMM TASK 78-36-00-410-040):
(3) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(4) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(5) Remove the access platform(s).

Subtask 72-23-00-440-050-A ** ON A/C NOT FOR ALL

B. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 72-23-00-410-050-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:38:48 UTC