* * * FOR ALL
TASK 72-51-01-300-806
1 . Weld Restoration of The Bayonet Tabs Dimension E.
A.This procedure gives instructions to repair the high pressure turbine stage 1 nozzle support (nozzle support) by doing a weld buildup to restore the bayonet tabs dimension E. 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.
(f)Do an inspection of the bayonet surfaces for:
1Wear:
Maximum repairable limit:
Any amount.
2Nicks, dents, scratches, or other damage:
Maximum repairable limit:
Any amount.
(5)Dimensional Inspection.
(e)Do an inspection of the nozzle support for:
5Dimension E (if wear observed, measure in worn area):
Maximum repairable limit:
Any amount.
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)
 
2303M22G03  
2303M22G04  
2303M22G05  
2303M22G06  
 
2407M46G02  
2407M46G04  
2407M46G06  
2407M46G08  
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.
 
Description
Figure
 
Machining Fixture
903
B.Consumable Materials.
 
Code No.
Description
 
C04-113
Abrasive, Grit, Aluminum Oxide (220 mesh abrasive compound)
 
C06-039
Weld Wire (Rene 220 weld wire)
 
C10-155
Shims, Metal (shims)
 
--
Shims, Hastelloy X
C.Referenced Procedures.
 
ATA No.
Description
 
70-00-03
Machining Data
 
70-21-00
Chemical Cleaning
 
70-21-04
Cleaning Method No. 4 - Dry Abrasive Blast Cleaning
 
70-24-00
Etching Procedures for Fluorescent-Penetrant Inspection
 
70-24-01
Swab Etching Procedure
 
70-32-00
Indirect Inspection Methods
 
70-32-02
Fluorescent Penetrant Inspection
 
70-32-03
Spot-Fluorescent-Penetrant Inspection
 
70-33-00
Special Inspection Procedures
 
70-33-02
Capillary Inspection of Open Face Honeycomb Structures
 
70-41-00
Welding and Brazing Practices
 
70-41-03
High Temperature Furnace Braze
 
70-42-00
Blending and Removal of High Metal Procedures
 
70-44-00
Heat Treating
 
70-44-03
Furnace Heat Treatment
 
72-51-01
Cleaning 001
 
72-51-01
Inspection 001
 
72-51-01
Repair 001
 
72-51-01
Repair 011
 
--
GEAE Photo Standard 8311253, Class 30
D.Expendable Parts. None.
E.SPD Information.
(1)Locally Manufactured SPD. None.
F.Special Solutions. None.
G.Test Specimens. None.
3 . Dimensional Information.
Subtask 72-51-01-220-081
A.Refer to Figure 901 and Figure 902 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.
NOTE:
Unless specified differently, all diameter measurements must be the average of eight equally spaced locations.
NOTE:
Unless specified differently, all drop dimension measurements must be the average of eight equally spaced circumferential locations.
 
Description
Minimum In-Process Dimension
Maximum In-Process Dimension
Minimum Finish Dimension
Maximum Finish Dimension
Reference Dimension
 
Dia CA
18.405 in. (467.49 mm)
--
18.697 in. (474.91 mm)
18.707 in. (475.15 mm)
--
4 . Setup Information.
Subtask 72-51-01-350-064
A.Set-up the nozzle support for machining. Refer to Figure 903, Figure 904, and as follows:
(1)If necessary, make the machining fixture.
(2)Put the machining fixture on a clean machining table or an equivalent clean and flat surface.
(3)Adjust the position of the machining fixture to get surface FA flat to 0.001 inch (0.02 mm) or less as follows:
(a)If necessary, put C10-155  shims between surface FA of the machining fixture and the surface of the machining table to get surface FA of the machining fixture flat to 0.001 inch (0.02 mm) FIR or less.
(b)Make sure that the runout of surface FS is 0.001 inch (0.02 mm) FIR or less.
(4)Adjust the position of the machining fixture to get surface FB concentric to the machining table axis to 0.002 inch (0.05 mm) or less.
(5)Attach the machining fixture to the machining table with clamps as follows:
(a)Engage the clamps to attach the machining fixture to the machining table.
(6)Measure the runout of surface FS and the concentricity of surface FB of the machining fixture as follows:
(a)Make sure that the machining fixture agrees with the limits specified in Subtask 72-51-01-350-064 (paragraph 4.A.(3) thru paragraph 4.A.(4)).
(7)If necessary, do Subtask 72-51-01-350-064 (paragraph 4.A.(3) thru paragraph 4.A.(6)) again to adjust the machining fixture to the correct position.
(8)Put the nozzle support on the machining fixture. Refer to Figure 901, Figure 904, and as follows:
(a)Put the nozzle support on the machining fixture with surface A (datum A) of the nozzle support down on surface FS of the machining fixture.
(9)Adjust the position of the nozzle support to get surface A flat to 0.002 inch (0.05 mm) or less. Refer to Figure 901, Figure 904, and as follows:
(a)If necessary, put C10-155  shims between surface A (datum A) of the nozzle support and surface FS of the machining fixture.
(10)Adjust the position of the nozzle support to make diameter of surface B (datum B) agree with the limits. Refer to Figure 901, Figure 904, and as follows:
(a)If necessary, put C10-155  shims between surface B (datum B) of the nozzle support and surface FB of the machining fixture.
(11)Attach the nozzle support to the machining fixture with a minimum of six clamps that are equally spaced. Refer to Figure 903.
Subtask 72-51-01-350-065
B.Set-up the nozzle support for heat treatment as follows:
(1)Put Hastelloy X shims on top of a graphite plate as follows:
(a)Put the Hastelloy X shims on top of a graphite plate to make sure that the nozzle support will not touch the graphite plate directly during the heat treatment.
CAUTION:
MAKE SURE THAT THE NOZZLE SUPPORT DOES NOT TOUCH THE GRAPHITE PLATE DIRECTLY. IF IT TOUCHES THE GRAPHITE AT THE HEAT TREATMENT TEMPERATURES, DAMAGE TO NOZZLE SUPPORT CAN OCCUR.
(2)Put the nozzle support on the Hastelloy X shims that are equally spaced on the top surface of the graphite plate.
(3)For the quantity and placement requirements of the load thermocouples, refer to TASK 70-44-03-370-004 (FURNACE HEAT TREATMENT) .
5 . Procedure.
Subtask 72-51-01-160-003
A.If necessary, clean the nozzle support. Refer to TASK 72-51-01-100-801 (72-51-01, CLEANING 001).
Subtask 72-51-01-350-066
B.Remove the shank nuts from the nozzle support. Refer to TASK 72-51-01-300-801 (72-51-01, REPAIR 001).
Subtask 72-51-01-350-109
C.For part numbers 2407M46G06   and 2407M46G08   , remove the hard coating from the nozzle support. Refer to TASK 72-51-01-300-811 (72-51-01, REPAIR 011).
Subtask 72-51-01-320-011
CAUTION:
MAKE SURE THAT YOU DO NOT REMOVE MORE MATERIAL THAN THE IN-PROCESS DIMENSIONS. DAMAGE TO THE NOZZLE SUPPORT CAN OCCUR.
D.Alternative Procedure Available. Machine the wear area of the nozzle support. Refer to TASK 70-00-03-800-004 (MACHINING DATA), Figure 901, Figure 902, and as follows:
(1)Set-up the nozzle support for machining. Refer to Subtask 72-51-01-350-064 (paragraph 4.A.).
(2)Machine diameter CA to prepare it for the welding process and as follows:
(a)Make sure that you do not remove more material than diameter CA in-process dimension.
(3)If necessary, prepare diameter CA for welding with a manual blending/grinding process. Refer to TASK 70-41-00-310-001 (WELDING AND BRAZING PRACTICES).
(4)Blend the nozzle support to break all sharp edges on the machined surfaces to 0.005-0.015 inch (0.13-0.38 mm). Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
(5)Do an inspection for smooth transition from non-machined surface to machined surface.
(6)Remove the nozzle support from the machining fixture.
Subtask 72-51-01-350-067
D.A.Alternative Procedure. For low number of tabs with cracks or wear, blend the defect in the nozzle support to prepare it for welding process. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-51-01-110-029
CAUTION:
DO NOT USE TOO MUCH ABRASIVE BLASTING. WHEN YOU OPERATE THE EQUIPMENT MAKE SURE THAT THE ABRASIVE JET IS NOT LOCALIZED ON THE SAME AREA FOR TOO LONG. DO NOT DWELL FOR MORE THAN 2 SECONDS IN THE SAME AREA. MAKE SURE THAT YOU DO THE ABRASIVE BLAST CLEANING PROCESS BY SWEEPING OBLIQUELY ALONG THE FULL SURFACE OF THE NOZZLE SUPPORT. IF NOT, DAMAGE TO THE NOZZLE SUPPORT CAN OCCUR.
E.Optional Procedure. Clean the nozzle support repair area. Refer to TASK 70-21-00-110-051 (CHEMICAL CLEANING), TASK 70-21-04-120-001 (CLEANING METHOD NO. 4 - DRY ABRASIVE BLAST CLEANING), and as follows:
(1)Apply masking to the honeycomb and inducer passages.
(2)Do the abrasive blast cleaning to the nozzle support with C04-113  220 mesh abrasive compound.
Subtask 72-51-01-160-004
F.Clean the nozzle support. Refer to TASK 72-51-01-100-801 (72-51-01, CLEANING 001).
Subtask 72-51-01-110-030
G.Etch the nozzle support repair areas. Refer to TASK 70-24-00-110-033 (ETCHING PROCEDURES FOR FLUORESCENT-PENETRANT INSPECTION), TASK 70-24-01-110-034 (SWAB ETCHING PROCEDURE), and as follows:
(1)Use Class C etchant.
Subtask 72-51-01-230-014
H.Alternative Procedure Available. Do an inspection of the nozzle support repair area. Refer to TASK 70-32-00-200-002 (INDIRECT INSPECTION METHODS), TASK 70-32-03-230-002 (SPOT-FLUORESCENT-PENETRANT INSPECTION), and as follows:
(1)Use Class A penetrant.
(2)Indications 0.030 inch (0.76 mm) or less are not interpretable and are permitted.
(3)Non-linear indications 0.060 inch (1.52 mm) or less with a minimum distance of 0.15 inch (3.9 mm) between indications are permitted.
(4)Linear indications more than 0.030 inch (0.76 mm) are not permitted.
NOTE:
Linear indications are indications that are at least four times longer than they are wide.
(5)Through indications are not permitted.
(6)Microshrinkage must agree with GEAE Photo Standard 8311253, Class 30.
Subtask 72-51-01-230-015
H.A.Alternative Procedure. Do an inspection of the nozzle support repair area. Refer to TASK 70-32-00-200-002 (INDIRECT INSPECTION METHODS), TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION), and as follows:
(1)Use Class A penetrant.
(2)Indications 0.030 inch (0.76 mm) or less are not interpretable and are permitted.
(3)Non-linear indications 0.060 inch (1.52 mm) or less with a minimum distance of 0.15 inch (3.9 mm) between indications are permitted.
(4)Linear indications more than 0.030 inch (0.76 mm) are not permitted.
NOTE:
Linear indications are indications that are at least four times longer than they are wide.
(5)Through indications are not permitted.
(6)Microshrinkage must agree with GEAE Photo Standard 8311253, Class 30.
Subtask 72-51-01-370-021
I.Optional Procedure. Alternative Procedure Available. Heat-treat the nozzle support. Refer to TASK 70-44-00-800-010 (HEAT TREATING), TASK 70-44-03-370-004 (FURNACE HEAT TREATMENT) , and as follows:
(1)Set-up the nozzle support for heat treatment. Refer to Subtask 72-51-01-350-065 (paragraph 4.B.).
(2)Do a solution heat treatment of the nozzle support as follows:
(a)Use a vacuum of 1.0 micron of mercury or less.
(b)Increase the temperature of the nozzle support to a temperature range of 1835 to 1885°F (1002 to 1029°C) and keep the temperature for 20-30 minutes.
(c)Decrease the temperature of the nozzle support to 1000°F (538°C) in less than 30 minutes.
(d)Remove the nozzle support from the furnace.
Subtask 72-51-01-370-022
I.A.Alternative Procedure. Heat-treat the nozzle support. Refer to TASK 70-44-00-800-010 (HEAT TREATING), TASK 70-44-03-370-004 (FURNACE HEAT TREATMENT) , and as follows:
(1)Set-up the nozzle support for heat treatment. Refer to Subtask 72-51-01-350-065 (paragraph 4.B.).
(2)Do a solution heat treatment of the nozzle support as follows:
(a)Use a vacuum of 1.0 micron of mercury or less.
(b)Increase the temperature of the nozzle support to a range of 1700 to 1750ºF (927 to 954ºC) and as follows:
1Keep this temperature for 10-15 minutes or until the vacuum rate gets back to a vacuum pressure of 5.0 X 10-4 mm Hg or less (6.7x10-4 millibar).
(c)Increase the temperature of the nozzle support to a temperature range of 1875 to 1925ºF (1024 to 1052ºC) at a rate of 20 to 25ºF (11 to 14ºC) for each minute and as follows:
1Keep this temperature for a maximum of 3-5 minutes.
2The accumulated time more than 1900ºF must be 30 minutes or less.
CAUTION:
DO NOT KEEP THE TEMPERATURE OF THE NOZZLE SUPPORT AT MORE THAN 1900ºF (1038ºC) FOR MORE THAN 30 MINUTES (TOTAL ACCUMULATED TIME) OR DAMAGE TO THE HONEYCOMB CAN OCCUR.
(d)Decrease the temperature of the nozzle support to a temperature range of 1750 to 1800ºF (954 to 982ºC) at a minimum rate of 20ºF (11ºC) for each minute and as follows:
1Keep this temperature for 10-15 minutes.
(e)Decrease the temperature of the nozzle support to 975 to 1025ºF (524 to 552ºC) in 30 minutes or less.
NOTE:
The rate of the temperature decrease to less than 1000ºF (538ºC) is not important.
(f)Remove the nozzle support from the furnace.
Subtask 72-51-01-310-009
J.Weld the nozzle support bayonet. Refer to TASK 70-41-00-310-001 (WELDING AND BRAZING PRACTICES) and as follows:
(1)Use C06-039  Rene 220 weld wire.
Subtask 72-51-01-350-068
K.Optional Procedure. Machine the nozzle support to the finish dimensions. Refer to TASK 70-00-03-800-004 (MACHINING DATA), Figure 901, Figure 902, and as follows:
(1)Set-up the nozzle support for machining. Refer to Subtask 72-51-01-350-064 (paragraph 4.A.).
(2)Machine the nozzle support bayonet to the finish dimensions and as follows:
(a)The transition between welded and non-welded areas must be flush to a maximum of 0.002 inch (0.05 mm).
(3)Blend the nozzle support. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) and as follows:
(a)Break all sharp edges on the machined surfaces to 0.005-0.015 inch (0.13-0.38 mm).
(4)Remove the nozzle support from the machining fixture.
Subtask 72-51-01-160-005
L.If you did Subtask 72-51-01-350-068 (paragraph 5.J.), clean the nozzle support. Refer to TASK 72-51-01-100-801 (72-51-01, CLEANING 001).
Subtask 72-51-01-110-031
M.Optional Procedure. If you did Subtask 72-51-01-350-068 (paragraph 5.J.), etch the nozzle support. Refer to TASK 70-24-00-110-033 (ETCHING PROCEDURES FOR FLUORESCENT-PENETRANT INSPECTION), TASK 70-24-01-110-034 (SWAB ETCHING PROCEDURE), and as follows:
(1)Use Class C etchant.
Subtask 72-51-01-230-016
N.Optional Procedure. Alternative Procedure Available. Do an inspection of the nozzle support repair area. Refer to TASK 70-32-00-200-002 (INDIRECT INSPECTION METHODS), TASK 70-32-03-230-002 (SPOT-FLUORESCENT-PENETRANT INSPECTION), and as follows:
(1)Use Class A penetrant.
(2)Indications 0.030 inch (0.76 mm) or less are not interpretable and are permitted.
(3)Non-linear indications 0.060 inch (1.52 mm) or less with a minimum distance of 0.15 inch (3.9 mm) between indications are permitted.
(4)Linear indications more than 0.030 inch (0.76 mm) are not permitted.
NOTE:
Linear indications are indications that are at least four times longer than they are wide.
(5)Through indications are not permitted.
(6)Microshrinkage must agree with GEAE Photo Standard 8311253, Class 30.
Subtask 72-51-01-230-017
N.A.Alternative Procedure. Do an inspection of the nozzle support repair area. Refer to TASK 70-32-00-200-002 (INDIRECT INSPECTION METHODS), TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION), and as follows:
(1)Use Class A penetrant.
(2)Indications 0.030 inch (0.76 mm) or less are not interpretable and are permitted.
(3)Non-linear indications 0.060 inch (1.52 mm) or less with a minimum distance of 0.15 inch (3.9 mm) between indications are permitted.
(4)Linear indications more than 0.030 inch (0.76 mm) are not permitted.
NOTE:
Linear indications are indications that are at least four times longer than they are wide.
(5)Through indications are not permitted.
(6)Microshrinkage must agree with GEAE Photo Standard 8311253, Class 30.
Subtask 72-51-01-160-006
O.If necessary, clean the nozzle support. Refer to TASK 72-51-01-100-801 (72-51-01, CLEANING 001).
Subtask 72-51-01-370-023
P.Alternative Procedure Available. Heat-treat the nozzle support. Refer to TASK 70-44-00-800-010 (HEAT TREATING), TASK 70-44-03-370-004 (FURNACE HEAT TREATMENT), and as follows:
(1)Set-up the nozzle support for heat treatment. Refer to Subtask 72-51-01-350-065 (paragraph 4.B.).
(2)Do a solution heat treatment of the nozzle support as follows:
(a)Use a vacuum of 1.0 micron of mercury or less.
(b)Increase the temperature of the nozzle support to a temperature range of 1835 to 1885°F (1002 to 1029°C) and keep the temperature for 20-30 minutes.
(c)Decrease the temperature of the nozzle support to 1000°F (538°C) in less than 30 minutes.
(d)Remove the nozzle support from the furnace.
Subtask 72-51-01-370-024
P.A.Alternative Procedure. Heat-treat the nozzle support. Refer to TASK 70-44-00-800-010 (HEAT TREATING), TASK 70-44-03-370-004 (FURNACE HEAT TREATMENT) , and as follows:
(1)Set-up the nozzle support for heat treatment. Refer to Subtask 72-51-01-350-065 (paragraph 4.B.).
(2)Do a solution heat treatment of the nozzle support as follows:
(a)Use a vacuum of 1.0 micron of mercury or less.
(b)Increase the temperature of the nozzle support to a range of 1700 to 1750ºF (927 to 954ºC) and as follows:
1Keep this temperature for 10-15 minutes or until the vacuum rate gets back to a vacuum pressure of 5.0 X 10-4 mm Hg or less (6.7x10-4 millibar).
(c)Increase the temperature of the nozzle support to a temperature range of 1875 to 1925ºF (1024 to 1052ºC) at a rate of 20 to 25ºF (11 to 14ºC) for each minute and as follows:
1Keep this temperature for a maximum of 3-5 minutes.
NOTE:
The accumulated time more than 1900ºF must be 30 minutes or less.
CAUTION:
DO NOT KEEP THE TEMPERATURE OF THE NOZZLE SUPPORT AT MORE THAN 1900ºF (1038ºC) FOR MORE THAN 30 MINUTES (TOTAL ACCUMULATED TIME) OR DAMAGE TO THE HONEYCOMB CAN OCCUR.
(d)Decrease the temperature of the nozzle support to a temperature range of 1750 to 1800ºF (954 to 982ºC) at a minimum rate of 20ºF (11ºC) for each minute and as follows:
1Keep this temperature for 10-15 minutes.
(e)Decrease the temperature of the nozzle support to 975 to 1025ºF (524 to 552ºC) in 30 minutes or less.
NOTE:
The rate of temperature decrease less than 1000ºF (538ºC) is not important.
(f)Remove the nozzle support from the furnace.
Subtask 72-51-01-370-025
Q.For part numbers 2303M22G03   thru 2303M22G06   , heat-treat the nozzle support. Refer to TASK 70-44-00-800-010 (HEAT TREATING), TASK 70-44-03-370-004 (FURNACE HEAT TREATMENT) , and as follows:
(1)Set-up the nozzle support for heat treatment. Refer to Subtask 72-51-01-350-065 (paragraph 4.B.).
(2)Do an age heat treatment of the nozzle support as follows:
(a)Use Cycle V-13 or Cycle I-9.
(3)Remove the nozzle support from the furnace.
Subtask 72-51-01-370-026
Q.A.For part numbers 2407M46G02   , 2407M46G04   , 2407M46G06   , and 2407M46G08   , heat-treat the nozzle support. Refer to TASK 70-44-00-800-010 (HEAT TREATING), TASK 70-44-03-370-004 (FURNACE HEAT TREATMENT) , and as follows:
(1)Set-up the nozzle support for heat treatment. Refer to Subtask 72-51-01-350-065 (paragraph 4.B.).
(2)Do an age heat treatment of the nozzle support as follows:
(a)Heat-treat the nozzle support at 1450 to 1500°F (788 to 816°C) for 8 hours.
(b)Decrease the temperature of the nozzle support to 1000°F (538°C) at a rate not less than 25°F (13.89°C) for each minute.
(c)Decrease the nozzle support temperature to room temperature.
(d)Remove the nozzle support from the furnace.
Subtask 72-51-01-310-010
R.Do a visual inspection of the nozzle support welded areas. Refer to TASK 70-41-00-310-001 (WELDING AND BRAZING PRACTICES), TASK 70-41-03-310-004 (HIGH TEMPERATURE FURNACE BRAZE), and as follows:
(1)The diameter or length of one void and non-bonded areas must not be more than the 0.08 inch (2.0 mm).
(2)There must not be more than three voids or non-bonded areas in a section with a length of 1.0 inch (25 mm) of braze bond area.
(3)Irregular surface porosity is permitted. Indications of 0.015 inch (0.38 mm) or less are not interpretable.
(4)Through voids are not permitted.
Subtask 72-51-01-220-082
S.Alternative Procedure Available. Do an inspection of the honeycomb. Refer to TASK 70-33-00-999-001 (SPECIAL INSPECTION PROCEDURES), TASK 70-33-02-220-005 (CAPILLARY INSPECTION OF OPEN FACE HONEYCOMB STRUCTURES), and as follows:
(1)You must fully bond the honeycomb core to its backing surface in 80 percent of the total contact area.
(2)Unbonded areas cannot contain more than 10 totally unbonded adjacent cells circumferentially by five totally unbonded adjacent cells axially.
(3)Honeycomb core node bond is not interpretable.
(4)Unbonded areas must have a distance of a minimum of five adjacent bonded cells.
(5)An unbonded area cannot include open cells, partial cells, or splices.
Subtask 72-51-01-220-083
S.A.Alternative Procedure. Do an inspection of the honeycomb as follows:
(1)Use a video microscope under a minimum of 10X magnification.
(2)Use the inspection limits specified in Subtask 72-51-01-310-010 (paragraph 5.Q.).
Subtask 72-51-01-350-069
T.If necessary, machine the nozzle support to the finish dimensions. Refer to TASK 70-00-03-800-004 (MACHINING DATA), Figure 901, Figure 902, and as follows:
(1)Set-up the nozzle support for machining. Refer to Subtask 72-51-01-350-064 (paragraph 4.A.).
(2)Machine the nozzle support bayonet to the initial contour and as follows:
(a)The transition between welded and non-welded areas must be flush to a maximum of 0.002 inch (0.05 mm).
(3)Blend the nozzle support. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) and as follows:
(a)Break all sharp edges on the machined surfaces to 0.005-0.015 inch (0.13-0.38 mm).
(4)Do an inspection of the nozzle support for smooth transition from non-machined surface to machined surface and as follows:
(a)The transition between welded and non-welded areas must be flush to a maximum of 0.002 inch (0.05 mm).
(5)Remove the nozzle support from the machining fixture.
Subtask 72-51-01-350-110
U.For part numbers 2407M46G06   and 2407M46G08   , apply the hard coating from the nozzle support. Refer to TASK 72-51-01-300-811 (72-51-01, REPAIR 011).
Subtask 72-51-01-160-007
V.If necessary, clean the nozzle support. Refer to TASK 72-51-01-100-801 (72-51-01, CLEANING 001).
Subtask 72-51-01-110-032
W.If necessary, etch the nozzle support repair area. Refer to TASK 70-24-00-110-033 (ETCHING PROCEDURES FOR FLUORESCENT-PENETRANT INSPECTION), TASK 70-24-01-110-034 (SWAB ETCHING PROCEDURE), and as follows:
(1)Use Class C etchant.
Subtask 72-51-01-230-018
X.Do an inspection of the nozzle support. Refer to TASK 70-32-00-200-002 (INDIRECT INSPECTION METHODS), TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION), and as follows:
(1)Use Class A penetrant.
(2)Indications 0.030 inch (0.76 mm) or less are not interpretable and are permitted.
(3)Non-linear indications 0.060 inch (1.52 mm) or less with a minimum distance of 0.15 inch (3.9 mm) between indications are permitted.
(4)Linear indications more than 0.030 inch (0.76 mm) are not permitted.
NOTE:
Linear indications are indications that are at least four times longer than they are wide.
(5)Through indications are not permitted.
(6)Microshrinkage must agree with GEAE Photo Standard 8311253, Class 30.
Subtask 72-51-01-160-008
Y.Clean the nozzle support. Refer to TASK 72-51-01-100-801 (72-51-01, CLEANING 001).
Subtask 72-51-01-220-084
Z.Do an inspection of the nozzle support. Refer to TASK 72-51-01-200-801 (72-51-01, INSPECTION 001) and Figure 902.
Subtask 72-51-01-350-070
AA.Install again the shank nuts in the nozzle support. Refer to TASK 72-51-01-300-801 (72-51-01, REPAIR 001).
* * * FOR ALL
Figure 901   (Sheet 1 ) High Pressure Turbine Stage 1 Nozzle Support
* * * FOR ALL
Figure 901   (Sheet 2 ) High Pressure Turbine Stage 1 Nozzle Support
* * * FOR ALL
Figure 901   (Sheet 3 ) High Pressure Turbine Stage 1 Nozzle Support
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Figure 901   (Sheet 4 ) High Pressure Turbine Stage 1 Nozzle Support
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Figure 902   (Sheet 1 ) High Pressure Turbine Stage 1 Nozzle Support - Dimensional Information
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Figure 902   (Sheet 2 ) High Pressure Turbine Stage 1 Nozzle Support - Dimensional Information
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Figure 902   (Sheet 3 ) High Pressure Turbine Stage 1 Nozzle Support - Dimensional Information
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Figure 903   (Sheet 1 ) Machining Fixture
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Figure 903   (Sheet 2 ) Machining Fixture
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Figure 904   Machining Fixture - Setup Information