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TASK 72-41-20-300-806
1 . Blend of the Compressor Discharge Pressure Honeycomb Seal.
A.This procedure gives instructions to repair the stage 10 OGV by blending the honeycomb seal (seal) of the compressor discharge pressure (CDP) to remove loose foils, dents, and gouges. Refer to Figure 901.
B.The following maximum repairable limits apply to this repair:
NOTE:
The information below gives maximum repairable limits for the applicable Inspection sections. The paragraphs are numbered the same as the manual Inspection sections.
(4)Visual Inspection.
(g)Do an inspection of the CDP seal honeycomb for:
1Annular wear grooves:
Maximum repairable limit:
None.
2Cell damage/erosion (does not include the area forward of the forward annular wear groove):
Maximum repairable limit:
0.75 sq in. (483.9 sq mm) total (cumulative) area and a maximum of 0.08 inch (2.0 mm) in depth. Damage across the full axial width of the honeycomb is not repairable.
3Cell damage/erosion forward of the forward annular wear groove:
Maximum repairable limit:
None.
C.The subsequent table gives a list of the part numbers that are applicable to this repair. All part numbers are applicable to all paragraphs unless specified differently.
 
Part Number(s)
 
2303M16G02  
2303M16G04  
2303M16G05  
2303M16G06  
 
2303M16G07  
2303M16G08  
2763M05G02  
2763M05G03  
 
2763M05G04  
2763M05G05  
2763M05G06  
2763M05G07  
 
2763M05G08  
2763M05G09  
2763M05G10  
2763M05G11  
D.Proprietary/Complex Process Statement.
(1)None.
2 . Tools, Equipment, and Materials.
NOTE:
Repair sources can use equivalent alternatives for tools, equipment, and consumable materials, however, the repair source must demonstrate and document equivalency.
A.Tools and Equipment.
(1)Special Tools. None.
(2)Standard Tools and Equipment. None.
(3)Locally Manufactured Tools. None.
B.Consumable Materials. None.
C.Referenced Procedures
 
ATA No.
Description
 
70-33-00
Special Inspection Procedures
 
70-33-02
Capillary Inspection of Open Face Honeycomb Structures
 
70-42-00
Blending and Removal of High Metal Procedures
 
72-41-20
Cleaning 001
 
72-41-20
Inspection 001
D.Expendable Parts. None
E.SPD Information.
(1)Locally Manufactured SPD. None.
F.Special Solutions. None.
G.Test Specimens. None.
3 . Dimensional Information.
Subtask 72-41-20-220-069
A.Refer to Figure 901 for specified dimensions and locations.
NOTE:
The dimensional data identified within this procedure was designed using inches as the base unit of measurement for dimensional values. The conversion to millimeters is rounded to one less decimal digit than inches. For minimum dimensions, converted values are rounded up. For maximum dimensions, converted values are rounded down. To avoid conversion errors, do not reconvert from millimeters to inches.
NOTE:
Reference dimensions do not require inspection.
4 . Setup Information.
None.
5 . Procedure.
Subtask 72-41-20-350-030
A.Blend the CDP seal of the stage 10 OGV to remove loose foil, dents, and gouges. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES), Figure 901, and as follows:
CAUTION:
MAKE SURE THAT YOU BLEND A MINIMUM DISTANCE OF 0.10 INCH (2.6 MM) FROM ALL WEAR GROOVES. IF NOT, DAMAGE TO THE CDP SEAL OF THE STAGE 10 OGV CAN OCCUR.
(1)Blending to a maximum of 0.08 inch (2.0 mm) below the initial contour of the parent material is permitted if it agrees with the conditions that follow:
(a)Damage does not extend the full axial width of the CDP seal.
(b)The total cumulative surface area is not more than 1.5 sq in. (967.74 sq mm).
(c)Damage is not located on the wear grooves.
(2)If damage is more than the repairable limits, you cannot repair the CDP seal of the stage 10 OGV with this procedure.
Subtask 72-41-20-220-070
B.Do an inspection of the braze joints on the blended CDP seal of the stage 10 OGV. Refer to TASK 70-33-00-999-001 (SPECIAL INSPECTION PROCEDURES), TASK 70-33-02-220-005 (CAPILLARY INSPECTION OF OPEN FACE HONEYCOMB STRUCTURES), Figure 901, and as follows:
(1)The total, cumulative, unbonded area of the CDP seal must be less than 15 sq in. (9677.4 sq mm).
(2)There must be a minimum of five adjacent bonded cells between unbonded areas.
(3)Unbonded areas must contain no more than ten totally unbonded adjacent circumferentially by five totally unbounded cells axially.
(4)The unbonded area of the CDP seal must not include open cells.
(5)If the capillary inspection conditions are less than the specified limits, you cannot repair the CDP seal of the stage 10 OGV with this procedure.
Subtask 72-41-20-160-006
C.If necessary, clean the stage 10 OGV. Refer to 72-41-20-100-801 (72-41-20, CLEANING 001).
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Figure 901   (Sheet 1 ) Stage 10 Outlet Guide Vane
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Figure 901   (Sheet 2 ) Stage 10 Outlet Guide Vane