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TASK 72-21-99-300-801
1 . Repair of the OGV Panel Countersink Hole.
A.This procedure gives instructions to repair the lower and upper outlet guide vane panels (OGV panel) by installing a locally manufactured bushing (bushing) on the countersink holes. 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.
(5)Visual Inspection.
(p)Do an inspection of the OGV panels (01-160 , 72-21-00) (SIN 84402), (01-170 , 72-21-00) (SIN 84403), (01-380 , 72-21-00) (SIN 84502), and (01-390 , 72-21-00) (SIN 84503). Refer to Figure 807 and Figure 808.
1Wear around the countersink holes of the OGV panels:
Maximum repairable limit:
Any amount, 0.150 inch (3.81 mm) in depth, radially for all countersunk boltholes.
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)
 
2323M22G01  
2323M23G01  
2323M24G02  
2323M25G02  
 
2382M86G01  
2382M87G01  
2382M88G01  
2382M89G01  
 
2541M08G01  
2541M09G01  
2541M10G01  
2541M11G01  
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.
 
Code No.
Description
 
C01-156
Adhesive, Paste, Two Part (MMM-A132B Type II, Form P Group 2) (epoxy paste adhesive)
C.Referenced Procedures.
 
ATA No.
Description
 
70-00-03
Machining Data
 
72-42-00
Blending and Removal of High Metal Procedures
 
72-21-99
Cleaning 001
D.Expendable Parts. None.
E.SPD Information.
(1)Locally Manufactured SPD.
 
Description
Figure
 
Bushing
903
F.Special Solutions. None.
G.Test Specimens. None.
3 . Dimensional Information.
Subtask 72-21-99-220-066
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 re-convert from millimeters to inches.
NOTE:
Reference dimensions do not require inspection.
4 . Setup Information.
None.
5 . Procedure.
Subtask 72-21-99-160-018
A.If necessary, clean the OGV panel. Refer to TASK 72-21-99-100-801 (72-21-99, CLEANING 001).
Subtask 72-21-99-350-001
B.Drill the damaged countersunk hole on the OGV panel to the in-process dimensions. Refer to TASK 70-00-03-800-004 (MACHINING DATA), Figure 901, Figure 902, and as follows:
(1)Fully remove damage from the countersunk holes and as follows:
(a)If there is a repair with this procedure in the countersunk holes, fully remove the damaged bushing and remaining adhesive from the countersunk hole.
(2)Deleted.
(a)Deleted.
Subtask 72-21-99-220-071
C.Do a dimensional inspection of the repair areas in the OGV panel. Refer to Figure 902 and as follows:
(1)If one or more dimensions do not agree with the in-process limits, the OGV panel is not repairable with this procedure.
Subtask 72-21-99-160-019
D.Clean the OGV panel that you will repair. Refer to TASK 72-21-99-100-801 (72-21-99, CLEANING 001).
Subtask 72-21-99-350-007
E.Make a locally manufactured bushing. Refer to TASK 70-00-03-800-004 (MACHINING DATA), Figure 903, and as follows:
(1)Use A286 alloy (AMS 5731/AMS 5732/AMS 5737/AMS 5525).
Subtask 72-21-99-350-008
F.Prepare the C01-156  epoxy paste adhesive as follows:
(1)Make an estimate of the quantity of C01-156  epoxy paste adhesive that you will use.
(2)Mix the C01-156  epoxy paste adhesive in a clean metal or non-coated paper container in the ratio that follows:
(a)Part A (resin) - 100 parts by weight.
(b)Part B (catalyst) - 20 parts by weight.
(3)Mix part A and part B until no streaks of the two components come into view and as follows:
(a)Use the C01-156  epoxy paste adhesive in 75 minutes or less.
Subtask 72-21-99-350-009
G.Apply the C01-156  epoxy paste adhesive to the surfaces on the OGV panel and the new bushing that you will bond. Refer to Figure 904.
Subtask 72-21-99-350-010
H.Install the new bushing in the OGV panel. Refer to Figure 904 and as follows:
(1)Apply contact pressure to the new bushing and the OGV panel.
(2)Cure in accordance with manufacturer instructions and as follows:
(a)Make sure that you do not cure to more than 200°F (93°C).
Subtask 72-21-99-350-011
I.Blend the OGV panel. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES), and as follows:
(1)Blend the OGV panel to the adjacent contour.
(2)Remove high metal and unwanted epoxy paste adhesive.
Subtask 72-21-99-220-072
J.Do a visual inspection of the bonded joint in the OGV panel as follows:
(1)Use 10X magnification to make sure that the edge of the bonded joint shows a constant bead of adhesive with no linear indications or discontinuities.
NOTE:
Linear indications are indications that are at least four times longer than they are wide.
(2)Do an inspection for disbond and as follows:
(a)If the new bushing is disbonded, do this repair again.
Figure 901   (Sheet 1 ) Outlet Guide Vane Panel
Figure 901   (Sheet 2 ) Outlet Guide Vane Panel
Figure 901   (Sheet 3 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 4 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 5 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 6 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 7 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 8 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 9 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 10 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 11 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 12 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 13 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 14 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 15 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 16 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 17 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 18 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 19 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 20 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 21 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 22 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 23 ) Outlet Guide Vane Panel
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Figure 901   (Sheet 24 ) Outlet Guide Vane Panel
Figure 902   Outlet Guide Vane Panel - Drill Damaged Countersunk Hole
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Figure 903   Outlet Guide Vane Panel - Repair Bushing
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Figure 904   Outlet Guide Vane Panel - Bushing Installation (Typical)
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Figure 905   (Sheet 1 ) Deleted
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Figure 905   (Sheet 2 ) Deleted
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Figure 905   (Sheet 3 ) Deleted
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Figure 905   (Sheet 4 ) Deleted