* * * FOR ALL
TASK 72-41-20-200-801
1 . General.
A.This procedure gives instructions to do an inspection of the stage 10 outlet guide vane (stage 10 OGV):
•
(01-160 , 72-41-00) (SIN 08001)
•
(01-160A , 72-41-00) (SIN 08001)
•
(01-161 , 72-41-00) (SIN 08001) (SB 72-0155 )
•
(01-161A , 72-41-00) (SIN 08001) (SB 72-0155)
•
(01-161B , 72-41-00) (SIN 08001) (SB 72-0155)
•
(01-161C , 72-41-00) (SIN 08001) (SB 72-0349)
•
(01-161D , 72-41-00) (SIN 08001) (SB 72-0349)
•
(01-161E , 72-41-00) (SIN 08001) (SB 72-0349)
•
(01-161F , 72-41-00) (SIN 08001) (SB 72-0349)
•
(01-161G , 72-41-00) (SIN 08001) (SB 72-0349)
•
(01-161H , 72-41-00) (SIN 08001) (SB 72-0349)
•
(01-161J , 72-41-00) (SIN 08001) (SB 72-0349).
2 . Tools, Equipment, and Materials.
NOTE:
You can use equivalent alternatives for tools, equipment, and consumable materials.
A.Tools and Equipment.
(1)Special Tools.
 
Tool No.
Description
 
11C4201G01
Fixture, Restrain - OGV Stage 10 (restrain fixture)
(2)Standard Tools and Equipment. None.
(3)Locally Manufactured Tools. None.
B.Consumable Materials. None.
C.Referenced Procedures.
 
ATA No.
Description
 
70-31-02
Acceptability Limits for Fluorescent Penetrant Inspection
 
70-32-02
Fluorescent Penetrant Inspection
D.Expendable Parts. None.
3 . Specific Inspection Procedure.
Subtask 72-41-20-230-001
A.Do a Class A fluorescent penetrant inspection (FPI) of the stage 10 OGV. Refer to TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION).
(1)Welded area FPI acceptability limits are specified in TASK 70-31-02-220-003 (ACCEPTABILITY LIMITS FOR FLUORESCENT PENETRANT INSPECTION), Class B (Fusion Welded Parts).
(2)All remaining (non-welded areas) FPI permitted indications are specified as follows. Refer to Figure 801.
•
Indications in area FA 0.030 inch (0.76 mm) or less, which are apart a minimum space of 0.150 inch (3.81 mm), are permitted. Non-linear indications 0.030 inch (0.76 mm) or less, which are apart less than 0.150 inch (3.81 mm), must be evaluated with the requirements of microshrinkage. Microshrinkage severity limit must be class 10 maximum. Refer to the GEAE photo standard 8311253
•
Indications in other locations (not in area FA) 0.060 inch (1.52 mm) or less, which are apart a minimum space of 0.150 inch (3.81 mm), are permitted. Non-linear indications 0.030 inch (0.76 mm) or less, which are apart less than 0.150 inch (3.81 mm), must be evaluated with the requirements of microshrinkage. Microshrinkage severity limit must be class 20 maximum. Refer to the GEAE photo standard 8311253
•
Linear indications of more than 0.030 inch (0.76 mm) are not permitted
•
Through indications are not permitted.
4 . Visual Inspection.
Subtask 72-41-20-220-110
A.Do a visual inspection of the stage 10 OGV. Refer to Figure 801 and as follows:
(1)Unless otherwise specified, visual inspection limits for size and spacing must be the same as the FPI criteria. Refer to Subtask 72-41-20-230-001 (paragraph 3.A.).
NOTE:
Microshrinkage must be evaluated by FPI only.
Subtask 72-41-20-220-001
B.Do an inspection of the vane airfoil leading and trailing edge for:
(1)Alternative Procedure Available. Cracks and tears at the leading edge:
Maximum serviceable limit:
Not serviceable.
Maximum repairable limit:
One crack on each vane, 0.050 inch (1.27 mm) in length.
Repair method:
Blend with a 0.250 inch (6.35 mm) minimum blend radius. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Subtask 72-41-20-220-083
(1).A.Alternative Procedure. Cracks and tears at the leading edge:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-41-20-300-808 (72-41-20, REPAIR 008) .
Subtask 72-41-20-220-084
(2)Alternative Procedure Available. Cracks and tears at the trailing edge:
Maximum serviceable limit:
Not serviceable.
Maximum repairable limit:
One crack on each vane, 0.050 inch (1.27 mm) in length.
Repair method:
Blend with a 0.250 inch (6.35 mm) minimum blend radius. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Subtask 72-41-20-220-107
(2).A.Alternative Procedure. Cracks and tears at the trailing edge:
Maximum serviceable limit:
One crack on each vane, 0.050 inch (1.27 mm) in length.
Repair method:
Repair. Refer to TASK 72-41-20-300-808 (72-41-20, REPAIR 008) .
Subtask 72-41-20-220-108
(3)Cracks and tears in airfoil (concave and convex) areas other than the leading and trailing edges (does not include airfoil fillets):
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-41-20-300-808 (72-41-20, REPAIR 008) .
* * * FOR ALL
* * * PRE SB   72-0155
Figure 801   (Sheet 1 ) Stage 10 OGV - Visual Inspection
* * * FOR ALL
* * * SB   72-0155
Figure 801   (Sheet 2 ) Stage 10 OGV - Visual Inspection
Subtask 72-41-20-220-002
C.Do an inspection of all surfaces (except fillets) for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Maximum repairable limit:
One on each vane, if you can remove the damage by blending to a maximum depth of 0.050 inch (1.27 mm).
Repair method:
Blend with a 0.250 inch (6.35 mm) minimum blend radius. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-41-20-220-003
D.Do an inspection of the fillets for:
(1)Nicks, dents, scratches, cracks, and tears:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-41-20-300-808 (72-41-20, REPAIR 008) .
Subtask 72-41-20-220-004
E.Do an inspection of the wear coat on diameter C for the following. Refer to Figure 802.
(1)Wear-through of the wear coat:
Maximum serviceable limit:
20 percent of the diameter.
Maximum repairable limit:
Any amount that agrees with the dimensional inspection limits. Refer to Subtask 72-41-20-220-018, (paragraph 5.A.).
Repair method:
Repair. Refer to TASK 72-41-20-300-805 (72-41-20, REPAIR 006).
Subtask 72-41-20-220-028
(2)Missing wear coat:
Maximum serviceable limit:
20 percent of the diameter.
Maximum repairable limit:
Any amount that agrees with the dimensional inspection limits. Refer to Subtask 72-41-20-220-018, (paragraph 5.A.).
Repair method:
Repair. Refer to TASK 72-41-20-300-805 (72-41-20, REPAIR 006).
Subtask 72-41-20-220-029
(3)Craze cracking:
Maximum serviceable limit:
Any amount that agrees with the dimensional inspection limits. Refer to Subtask 72-41-20-220-018, (paragraph 5.A.).
Repair method:
Repair. Refer to TASK 72-41-20-300-805 (72-41-20, REPAIR 006).
Subtask 72-41-20-220-030
F.Do an inspection of the wear coat on surface N for the following. Refer to Figure 802.
(1)Wear-through of the wear coat:
Maximum serviceable limit:
20 percent of the surface.
Maximum repairable limit:
Any amount that agrees with the dimensional inspection limits. Refer to Subtask 72-41-20-220-018, (paragraph 5.A.).
Repair method:
Repair. Refer to TASK 72-41-20-300-805 (72-41-20, REPAIR 006).
Subtask 72-41-20-220-031
(2)Missing wear coat:
Maximum serviceable limit:
20 percent of the surface.
Maximum repairable limit:
Any amount that agrees with the dimensional inspection limits. Refer to Subtask 72-41-20-220-018, (paragraph 5.A.).
Repair method:
Repair. Refer to TASK 72-41-20-300-805 (72-41-20, REPAIR 006).
Subtask 72-41-20-220-032
(3)Craze cracking:
Maximum serviceable limit:
Any amount that agrees with the dimensional inspection limits. Refer to Subtask 72-41-20-220-018 (paragraph 5.A.).
Repair method:
Repair. Refer to TASK 72-41-20-300-805 (72-41-20, REPAIR 006).
Subtask 72-41-20-220-005
* * * PRE SB   72-0155
G.Do an inspection of the leaf seal for:
(1)Dents, tears, and cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-41-20-300-801 (72-41-20, Repair 001).
Subtask 72-41-20-220-006
(2)Wear:
Maximum serviceable limit:
0.005 inch (0.13 mm).
Repair method:
Repair. Refer to TASK 72-41-20-300-801 (72-41-20, Repair 001).
Subtask 72-41-20-220-007
(3)Leaf seal missing:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-41-20-300-801 (72-41-20, Repair 001).
Subtask 72-41-20-220-008
(4)Compressed or missing spring:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-41-20-300-801 (72-41-20, Repair 001).
Subtask 72-41-20-220-009
(5)Pin hole elongation:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the stage 10 OGV.
Subtask 72-41-20-220-010
(6)Pin wear:
Maximum serviceable limit:
0.010 inch (0.25 mm) permitted if the seal does not hang-up in wear.
Repair method:
Repair. Refer to TASK 72-41-20-300-801 (72-41-20, Repair 001).
* * * END PRE SB   72-0155
Subtask 72-41-20-220-085
* * * SB   72-0155
H.Do an inspection of the forward piston ring rail for:
(1)Wear:
Maximum serviceable limit:
Any amount, if dimension L is met for 360 degrees.
Repair method:
Replace the stage 10 OGV.
Subtask 72-41-20-220-113
I.Do an inspection of the inner band for:
(1)Nicks, dents, scratches, wear:
Minimum serviceable limit:
Not serviceable.
Maximum repairable limit:
Any amount, 0.015 inch (0.38 mm) in depth, after blend. Blend depth must be measured from the inner band leading edge.
Repair method:
Blend with a 0.250 inch (6.35 mm) minimum blend radius. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
* * * END SB   72-0155
Subtask 72-41-20-220-011
J.Do an inspection of the CDP seal honeycomb for:
(1)Annular wear grooves:
Maximum serviceable limit:
0.040 inch (1.02 mm) in depth, 0.200 inch (5.08 mm) in axial width.
Repair method:
Repair. Refer to TASK 72-41-20-300-804 (72-41-20, REPAIR 007).
Subtask 72-41-20-220-012
(2)Cell damage/erosion (does not include the area forward of the forward annular wear groove):
Maximum serviceable limit:
0.75 sq in. (483.9 sq mm) total (cumulative) area. Damage across the full axial width of the honeycomb is not serviceable.
Repair method:
Repair. Refer to TASK 72-41-20-300-804 (72-41-20, REPAIR 007) or blend the CDP seal honeycomb. Refer to TASK 72-41-20-300-806 (72-41-20, REPAIR 004) .
Subtask 72-41-20-220-013
(3)Cell damage/erosion forward of the forward annular wear groove:
Maximum serviceable limit:
Any amount, if two undamaged cells are forward of the forward rub groove.
Repair method:
Repair. Refer to TASK 72-41-20-300-804 (72-41-20, REPAIR 007).
Subtask 72-41-20-220-014
K.Do an inspection of the support structure for:
(1)Nicks and scratches:
Maximum serviceable limit:
Not serviceable.
Maximum repairable limit:
Any amount, if you can remove the damage by blending to a maximum depth of 0.010 inch (0.25 mm).
Repair method:
Blend with a 0.25 inch (6.4 mm) blend radius. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-41-20-220-015
(2)Cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the stage 10 OGV.
Subtask 72-41-20-220-016
(3)Dents:
Maximum serviceable limit:
Any amount of smooth contour dents, 0.15 inch (3.8 mm) in depth, but not on the mating surfaces.
Repair method:
Replace the stage 10 OGV.
Subtask 72-41-20-220-017
L.Do an inspection of the OGV ribs above the airfoils for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit:
0.01 inch (0.3 mm) in depth.
Maximum repairable limit:
Any amount that you can remove with a blend, with a 0.250 inch (6.35 mm) minimum blend radius that does not hit the outer flowpath wall.
Repair method:
Blend with a 0.250 inch (6.35 mm) minimum blend radius. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-41-20-220-038
M.Do an inspection of the cover plate self-locking nut assembly for:
NOTE:
Do this inspection only when it is necessary to remove the cover plate.
(1)Damaged self-locking nut or partial seized bolts:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the self-locking nut assembly. Refer to TASK 72-41-20-300-802 (72-41-20, Repair 003).
Subtask 72-41-20-220-046
N.Do an inspection of the wear coat on surface M for the following. Refer to Figure 802.
(1)Wear-through of the wear coat:
Maximum serviceable limit:
20 percent of the surface.
Repair method:
Repair. Refer to TASK 72-41-20-300-805 (72-41-20, REPAIR 006).
Subtask 72-41-20-220-047
(2)Missing wear coat:
Maximum serviceable limit:
20 percent of the surface.
Repair method:
Repair. Refer to TASK 72-41-20-300-805 (72-41-20, REPAIR 006).
Subtask 72-41-20-220-048
(3)Craze cracking:
Maximum serviceable limit:
Any amount that agrees with the dimensional inspection limits. Refer to Subtask 72-41-20-220-018 (paragraph 5.A.) .
Repair method:
Repair. Refer to TASK 72-41-20-300-805 (72-41-20, REPAIR 006).
Subtask 72-41-20-220-092
O.Do an inspection of the forward lip for:
(1)Cracks, nicks, tears, and missing material:
Maximum serviceable limit:
Not serviceable.
Maximum repairable limit:
Any amount for welding.
Repair method:
Repair. Refer to TASK 72-41-20-300-809 (72-41-20, REPAIR 009).
Maximum repairable limit:
A maximum of 15 areas can be blended on the forward lip, and must be separated by a distance of 0.250 inch (6.30 mm). The maximum permitted depth of blend is 0.031 inch (0.78 mm) and the maximum width post blend is 0.310 inch (7.80 mm).
Repair method:
Blend repair. Refer to TASK 72-41-20-300-809 (72-41-20, REPAIR 009).
5 . Dimensional Inspection.
Refer to Figure 802.
Subtask 72-41-20-220-018
A.Use the 11C4201   restrain fixture (or an applicable alternative) to hold diameter G round to less than 0.006 inch (0.15 mm), unless specified differently. Hold surface F flat to less than 0.002 inch (0.05 mm).
Subtask 72-41-20-220-019
B.Measure the diameter dimension at eight equally spaced locations and calculate the average of the measurements.
* * * FOR ALL
* * * PRE SB   72-0155
Figure 802   (Sheet 1 ) Stage 10 OGV - Dimensional Inspection
* * * FOR ALL
* * * SB   72-0155
Figure 802   (Sheet 2 ) Stage 10 OGV - Dimensional Inspection
* * * FOR ALL
* * * SB   72-0155
Figure 802   (Sheet 3 ) Stage 10 OGV - Dimensional Inspection
Subtask 72-41-20-220-020
C.Do an inspection of the stage 10 OGV for:
(1)Diameter C:
Minimum serviceable limit:
24.970 inches (634.24 mm).
Maximum serviceable limit:
24.978 inches (634.44 mm).
Repair method:
Repair. Refer to TASK 72-41-20-300-805 (72-41-20, REPAIR 006).
Subtask 72-41-20-220-022
(2)Dimension D:
Minimum serviceable limit:
0.053 inch (1.35 mm).
Repair method:
Replace the stage 10 OGV.
Subtask 72-41-20-220-024
(3)Diameter G:
Minimum serviceable limit:
16.238 inches (412.45 mm).
Maximum serviceable limit:
16.243 inches (412.57 mm).
Repair method:
Repair. Refer to TASK 72-41-20-300-807 (72-41-20, REPAIR 005).
Subtask 72-41-20-220-025
(4)Diameter G roundness (free state):
Maximum serviceable limit:
0.015 inch (0.381 mm).
Repair method:
Repair. Refer to TASK 72-41-20-300-807 (72-41-20, REPAIR 005).
Subtask 72-41-20-220-026
(5)Surface F flatness (free state):
Maximum serviceable limit:
0.005 inch (0.13 mm).
Repair method:
Repair. Refer to TASK 72-41-20-300-807 (72-41-20, REPAIR 005).
Subtask 72-41-20-220-027
* * * FOR PART NUMBERS   2303M16G04, 2303M16G06, 2303M16G07, 2303M16G08, 2763M05G05, 2763M05G06, AND 2763M05G07 ONLY:
(6)Dimension H:
Minimum serviceable limit:
6.959 inches (176.76 mm).
Maximum serviceable limit:
6.979 inches (177.27 mm).
Repair method:
Repair. Refer to TASK 72-41-20-300-807 (72-41-20, REPAIR 005).
Subtask 72-41-20-220-114
* * * FOR PART NUMBERS   2763M05G02, 2763M05G03, AND 2763M05G04 ONLY:
(6).A.Dimension H:
Minimum serviceable limit:
6.966 inches (176.94 mm).
Maximum serviceable limit:
6.986 inches (177.44 mm).
Repair method:
Repair. Refer to TASK 72-41-20-300-807 (72-41-20, REPAIR 005).
Subtask 72-41-20-220-033
(7)Dimension J:
Minimum serviceable limit:
5.8140 inches (147.675 mm).
Maximum serviceable limit:
5.8240 inches (147.929 mm).
Repair method:
Repair. Refer to TASK 72-41-20-300-805 (72-41-20, REPAIR 006).
Subtask 72-41-20-220-034
(8)Dimension K:
Minimum serviceable limit:
5.4660 inches (138.836 mm).
Maximum serviceable limit:
5.4740 inches (139.040 mm).
Repair method:
Repair. Refer to TASK 72-41-20-300-805 (72-41-20, REPAIR 006).
Subtask 72-41-20-220-086
* * * SB   72-0155
* * * SB   72-0349( FOR PART NUMBERS 2303M16G04, 2303M16G06, 2303M16G07, 2763M05G02, 2763M05G03, AND 2763M05G04 ONLY )
(9)Dimension L:
Minimum serviceable limit:
0.060 inch (1.53 mm).
Maximum serviceable limit:
0.088 inch (2.24 mm).
Repair method:
Repair. Refer to TASK 72-41-20-300-812 (72-41-20, REPAIR 012).
Subtask 72-41-20-220-111
* * * SB   72-0349( FOR PART NUMBERS 2763M05G05, 2763M05G06, 2763M05G07, AND 2303M16G08 ONLY )
(10)Dimension L:
Minimum serviceble limit:
0.060 inch (1.53 mm), if dimension T is serviceable. Refer to Subtask 72-41-20-220-112 (paragraph 5.C.(11)).
Maximum serviceable limit:
0.088 inch (2.23 mm).
Repair method:
Repair. Refer to SB 72-0349.
Subtask 72-41-20-220-112
(11)Dimension T:
Maximum serviceable limit:
0.002 inch (0.05 mm).
Repair method:
Repair. Refer to SB 72-0349.
* * * END SB   72-0349
* * * END SB   72-0155