Outlet Guide Vane, Struts 1, 5 and 6 - Blending of Leading Edge [CFML]

TASK 72-24-21-300-801-A
Outlet Guide Vane, Struts 1, 5 and 6 - Blending of Leading Edge

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: 210
ZONE: 400

1. Reason for the Job
This repair procedure gives instructions to blend the leading edge of the struts 1, 5 and 6.
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
No specific	S1093 Titanium Alloys Etchant

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
400	POWER PLANT, NACELLES AND PYLONS

D. Referenced Information

REFERENCE	DESIGNATION
SPM 702111
SPM 703213
SPM 703223
SPM 704111
SPM 704112
SPM 705311
Outlet Guide Vane Struts
Outlet Guide Vane Struts - Not Repairable Areas
Outlet Guide Vane Struts - Blending Dimensions

3. Job Set-up
Subtask 72-24-21-941-051-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).

4. Procedure

WARNING: DO NOT LET TITANIUM DUST COLLECT. DISCARD ALL TITANIUM WASTE IN AN APPROVED CONTAINER. TITANIUM DUST IS EXTREMELY FLAMMABLE.

WARNING: DO NOT USE WATER TO EXTINGUISH A TITANIUM FIRE. EXTINGUISH WITH AN APPROVED CHEMICAL FOR METAL FIRES.

WARNING: DO NOT USE HALOGEN PRODUCTS. TITANIUM ALLOY PARTS REACT TO CHLORINATED HYDROCARBONS. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY TO PERSONS CAN OCCUR.

CAUTION: WHEN YOU PROCESS TITANIUM PARTS, DO NOT USE TOOL FIXTURE DETAILS MADE OF OR COATED WITH CADMIUM, BISMUTH, TIN, ZINC, GOLD OR SILVER. IF YOU DO, THESE MATERIALS CAN HAVE AN UNWANTED EFFECT ON THE TITANIUM PARTS.

CAUTION: DO NOT USE TOOLS THAT WERE USED ON OTHER MATERIALS. IT WILL CAUSE CONTAMINATION OF THE TITANIUM. KEEP THE BLENDING ABRASIVE TOOLS USED FOR TITANIUM SEPARATE FROM TOOLS USED FOR OTHER METALS. IF YOU ARE NOT SURE OF THE PREVIOUS USE OF THE ABRASIVE TOOL, DISCARD IT AND USE A NEW ABRASIVE TOOL.

CAUTION: WHEN YOU USE POWER TOOLS, MAKE SURE THAT YOU DO NOT CAUSE HEAT THAT WILL RESULT IN THERMAL STRESS. THERMAL STRESS CAN CAUSE ENGINE FAILURE.

Subtask 72-24-21-220-050-A

A. Dimensional Information

Table 801: Dimensional Information

Description	Minimum In-Process Dimension	Maximum In-Process Dimension	Minimum Finish Dimension	Maximum Finish Dimension	Reference Dimension
Dim. P	-	-	-	0.315 in. (8.0 mm)	-
Dim. L	-	-	6 x P	-	-
Radius R	-	-	5 x P	-	-
Radius C	-	-	0.04 in. (1 mm)	-	-
Dim. D	-	-	10 x P if Dim. P less than or equal to 0.087 in. (2.2 mm)	-	-
Dim. D	-	-	0.866 in. (22.0 mm) if Dim. P more than 0.087 in. (2.2 mm)	-	-

Subtask 72-24-21-110-050-A

B. Removal of the Grease
(1) If necessary, remove the grease from the part SPM 702111.

Subtask 72-24-21-320-050-A

C. Blending of the Area

WARNING: USE PERSONAL PROTECTION EQUIPMENT. METAL PARTICLES CAN CAUSE DAMAGE, INJURY OR IRRITATION.

CAUTION: WHEN YOU DO THE BLENDING, REMOVE ONLY THE MINIMUM QUANTITY OF MATERIAL NECESSARY TO REMOVE THE DEFECT. IF YOU REMOVE TOO MUCH MATERIAL, DAMAGE TO THE PART CAN OCCUR.

CAUTION: MAKE SURE THAT THE BLENDED AREAS MAKE A SMOOTH CONTOUR INTO THE ADJACENT AREAS. IF NOT, DAMAGE TO THE PART CAN OCCUR.

CAUTION: YOU MUST NOT DO MORE THAN TWO REPAIRS FOR EACH LEADING EDGE OF THE OGV STRUTS.

CAUTION: BE CAREFUL NOT TO BLEND ON THE LEADING EDGE OF THE INNER PLATFORM FILLET.

(1) Blend the area to repair as follows SPM 704112 or SPM 704111:
(a) Blend the part. Refer to the Para. 4.A.

Outlet Guide Vane Struts - Not Repairable Areas

Outlet Guide Vane Struts - Blending Dimensions

(b) If there are two areas blended, make sure that the Dim. D is in the limits. Refer to the Para. 4.A.

Outlet Guide Vane Struts - Blending Dimensions

(c)

Outlet Guide Vane Struts - Blending Dimensions

(d) Make sure that after blending the roughness of the surface is 0.000063 in. (0.0016 mm).

Subtask 72-24-21-110-052-A

D. Cleaning of the Blended Area
(1) Clean the blended area SPM 702111.

Subtask 72-24-21-230-050-A

E. Swab all the blended areas to be etched with S1093 Titanium Alloys Etchant SPM 705311.

Subtask 72-24-21-220-051-A

F. Fluorescent Penetrant Inspection (FPI)
(1) Do a FPI of the repaired areas SPM 703213 or SPM 703223.
(a) No cracks are permitted.

5. Close-up
Subtask 72-24-21-942-050-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 13:04:14 UTC