* * * FOR ALL
TASK 72-53-41-200-801
1 . General.
A.This procedure gives instructions to do an inspection of the high pressure turbine (HPT) rotor stage 2 disk (stage 2 disk).
•
(01-130 , 72-53-00) (SIN 150B1)
•
(02-130 , 72-53-00) (SIN 150B1).
B.Carefully examine the areas that follow, because they are the most important. Refer to Figure 801.
•
Dovetail slot bottoms, pressure faces, and minimum necks
•
Rabbets
•
Disk bore
•
Radii
•
Splines
•
Coupling nut mate face.
2 . Tools, Equipment, and Materials.
NOTE:
You can use equivalent alternatives for tools, equipment, and consumable materials.
A.Tools and Equipment.
(1)Special Tools.
(2)Standard Tools and Equipment.
 
Tool No.
Description
 
Eddy Current Inspection Kit (GE-FQAP-428)
GE Aircraft Engines, QTC Attention: Brenda Tenley One Neumann Way, MD: Q8 Cincinnati, Ohio 45215 Phone: (513) 552-4701 Fax: (513) 552-4892 Email: brenda.tenley@ae.ge.com
(3)Locally Manufactured Tools. None.
B.Consumable Materials.
 
Code No.
Description
 
C04-166
Shot, Peening, Conditioned Cut Wire (conditioned cut wire)
 
C10-021
Tape, Plastic (masking tape)
 
C10-205
Almen Test Strips (test strips)
C.Referenced Procedures.
 
ATA No.
Description
 
70-32-02
Fluorescent Penetrant Inspection
 
70-32-10
2 MHz Eddy Current Inspection of Bores in Inconel Alloy Rotating Engine Hardware Using Systems Under Computer, Numeric, or Robotic Control
 
70-47-01
Shotpeening
 
72-53-41
Cleaning 001
D.Expendable Parts. None.
3 . Specific Inspection Procedure.
NOTE:
Any findings beyond manual limits that may be indicative of a possible crack and/or metallurgical defect must be reported to GE through a myGEAviation Technical Inquiry.
Subtask 72-53-41-230-001
A.Do a fluorescent penetrant inspection of the stage 2 disk as follows:
(1)Make sure that the stage 2 disk is clean. Refer to TASK 72-53-41-100-801 (72-53-41, CLEANING 001).
(2)Do a Class G fluorescent penetrant inspection. Refer to TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION). The disk posts and dovetail slot bottoms, must be clean.
•
Indications more than 0.015 inch (0.38 mm) are not permitted.
* * * FOR ALL
Figure 801   (Sheet 1 ) Stage 2 Disk - Visual Inspection
* * * FOR ALL
Figure 801   (Sheet 2 ) Stage 2 Disk - Visual Inspection
* * * FOR ALL
Figure 801   (Sheet 3 ) Stage 2 Disk - Visual Inspection
* * * FOR ALL
Figure 801   (Sheet 4 ) Stage 2 Disk - Visual Inspection
* * * FOR ALL
Figure 801   (Sheet 5 ) Stage 2 Disk - Visual Inspection
* * * FOR ALL
Figure 801   (Sheet 6 ) Stage 2 Disk - Visual Inspection
* * * FOR ALL
Figure 801   (Sheet 7 ) Stage 2 Disk - Representative Image for Dovetail Pressure Face Pitting Related to Corrosion
* * * FOR ALL
Figure 801   (Sheet 8 ) Stage 2 Disk - Representative Image for Dovetail Pressure Face Fretting
* * * FOR ALL
Figure 801   (Sheet 9 ) Stage 2 Disk - Representative Image for Dovetail Minimum Neck Pitting Related to Corrosion
* * * FOR ALL
Figure 801   (Sheet 10 ) Stage 2 Disk - Dovetail Slot Features Clarification
Subtask 72-53-41-250-001
B.Do an eddy current inspection of the stage 2 disk bore as follows:
CAUTION:
DO NOT USE METAL BRUSHES TO CLEAN THE DISK BORES. METAL BRUSHES CAN CAUSE SCRATCHES. SCRATCHES CAN CAUSE THE BORE SURFACES TO BE REJECTED DURING THE EDDY CURRENT INSPECTION.
(1)Make sure that the stage 2 disk bore is clean. Refer to TASK 72-53-41-100-801 (72-53-41, CLEANING 001).
Subtask 72-53-41-250-002
(2)Do an eddy current inspection of the disk bore surfaces. Refer to TASK 70-32-10-250-003 (2 MHZ EDDY CURRENT INSPECTION OF BORES IN ROTATING ENGINE HARDWARE USING SYSTEMS UNDER COMPUTER, NUMERIC, OR ROBOTIC CONTROL) and Figure 802.
NOTE:
This inspection can only be done by identified and approved persons. You cannot accept or reject components until you have been approved.
(a)If you change the equipment or the procedure specified in this inspection, it can have an unwanted effect on the inspection results. Before you change the equipment or the procedure, write to:
GE Aircraft Engines, OTC
One Neumann Way, MD: Q8
Cincinnati, Ohio 45215
USA
(b)The materials are Rene 88 for stage 2 disk (02-130 , 72-53-00) (SIN 150B1) and Rene 65 for stage 2 disk (02-130A , 72-53-00) (SIN 150B1). Use correction factors for calibration as necessary. Refer to TASK 70-32-10-250-003 (2 MHZ EDDY CURRENT INSPECTION OF BORES IN ROTATING ENGINE HARDWARE USING SYSTEMS UNDER COMPUTER, NUMERIC, OR ROBOTIC CONTROL).
(c)Use the GE-FQAP-428inspection kit to do an inspection of the bore zones shown in Figure 802.
(d)Examine the inspection results. Use the limits that follow:
1The eddy current inspection limit is 1500 mV.
2If the amplitude of an indication is more than 1500 mV, the fan disk is not serviceable.
(e)Complete the eddy current data sheets.
(f)Make sure you complete all records during the eddy current inspection. Keep all records made during the inspection.
Subtask 72-53-41-270-003
C.Do an immersion ultrasonic inspection of the stage 2 disk. Refer to TASK 72-53-41-800-801 (72-53-41, SPECIAL PROCEDURES 001).
* * * FOR ALL
Figure 802   Stage 2 Disk - Eddy Current Bore Inspection
4 . Visual Inspection.
Refer to Figure 801.
Subtask 72-53-41-220-135
A.Visual inspection serviceable limits for wear, fretting, galling, scoring, indentations and REPAIR 003 are not applicable to HPT rotor stage 2 disk P/N 2383M86P02   with part serial numbers listed in GEnx-1B SB 72-0484 Table 9 and Table 10.
Subtask 72-53-41-220-136
B.Visual inspection serviceable limits for nicks, dents, scratches, wear, fretting, galling, scoring, indentations and REPAIR 003 are not applicable to HPT rotor stage 2 disk P/N 2383M86P02   with part serial numbers listed in GEnx-1B SB 72-0484 Table 11.
Subtask 72-53-41-220-004
C.Do an inspection of the dovetail serrations for:
(1)Nicks and dents:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-056
(1).A.Deleted.
Subtask 72-53-41-220-005
(2)Scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-057
(2).A.Deleted.
Subtask 72-53-41-220-006
(3)Pitting related to corrosion:
Maximum serviceable limit:
Not serviceable.
Repair method (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Replace the stage 2 disk.
Repair method:
Repair. Refer to TASK 72-53-41-300-803 (72-53-41, REPAIR 003) .
Subtask 72-53-41-220-007
D.Do an inspection of the dovetail pressure faces for:
NOTE:
These area limits are the total area for each pressure face, not for individual nicks and dents.
(1)Nicks, dents, and scratches:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Any amount, up to a maximum depth and area limits given below, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
 
Part Number
Maximum Depth, inch (mm)
Area Limit, Square inch (Square mm)
 
Upper Pressure Face
Middle Pressure Face
Lower Pressure Face
 
2300M84P02   and 2445M92P01  
0.004 (0.10)
0.006 (3.87)
0.006 (3.87)
0.012 (7.74)
 
2383M86P02   and 2383M86P03  
0.005 (0.12)
0.012 (7.74)
0.012 (7.74)
0.024 (15.48)
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-008
(2)Deleted.
Subtask 72-53-41-220-009
(3)Deleted.
Subtask 72-53-41-220-010
(4)Pitting related to corrosion. Refer to Figure 801 (Sheet 7):
Maximum serviceable limit:
Not serviceable.
Repair method (for stage 2 disk part numbers 2383M86P02 and 2383M86P03):
Replace the stage 2 disk.
Repair method (for stage 2 disk part numbers 2300M84P02 and 2445M92P01):
Repair. Refer to TASK 72-53-41-300-803 (72-53-41, REPAIR 003).
Subtask 72-53-41-220-086
(4).A.Deleted.
Subtask 72-53-41-220-011
(5)Fretting. Refer to Figure 801 (Sheet 8):
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Not serviceable.
Maximum serviceable limit:
0.001 inch (0.03 mm).
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-012
E.Do an inspection of the dovetail minimum neck radii for:
(1)Nicks and dents:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-013
(2)Scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-014
(3)Pitting related to corrosion. Refer to Figure 801 (Sheet 9):
Maximum serviceable limit:
Not serviceable.
Repair method (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Replace the stage 2 disk.
Repair method:
Repair. Refer to TASK 72-53-41-300-803 (72-53-41, REPAIR 003) .
Subtask 72-53-41-220-015
F.Do an inspection of the dovetail slot bottoms for:
(1)Nicks and dents:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-016
(2)Scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-017
(3)Pitting related to corrosion:
Maximum serviceable limit:
Not serviceable.
Repair method (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Replace the stage 2 disk.
Repair method:
Repair. Refer to TASK 72-53-41-300-803 (72-53-41, REPAIR 003) .
Subtask 72-53-41-220-087
(3).A.Deleted.
Subtask 72-53-41-220-018
G.Do an inspection of the rim OD and end faces for:
(1)Nicks:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-058
(1).A.Deleted.
Subtask 72-53-41-220-019
(2)Dents:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-059
(2).A.Deleted.
Subtask 72-53-41-220-020
(3)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-060
(3).A.Deleted.
Subtask 72-53-41-220-021
(4)Galling and fretting:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Not serviceable.
Maximum serviceable limit:
0.005 inch (0.13 mm) in depth after the removal of high metal.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-061
(4).A.Deleted.
Subtask 72-53-41-220-022
(5)Pitting related to corrosion:
Maximum serviceable limit:
Not serviceable.
Repair method (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Replace the stage 2 disk.
Repair method:
Repair. Refer to TASK 72-53-41-300-803 (72-53-41, REPAIR 003) .
Subtask 72-53-41-220-088
(5).A.Deleted.
Subtask 72-53-41-220-023
H.Do an inspection of the forward and aft web and hub faces for:
NOTE:
Small scratches, nicks, dents, or other surface conditions can be seen on the hub and web areas (not the adjacent radii). It is possible these indications were blended to remove high metal, with a depth no greater than 0.001 inch (0.03 mm) in depth. This condition is from new production and will have a surface finish that shows signs of shot peen. These indications are permitted.
Subtask 72-53-41-220-062
(1)Nicks and scratches that are 0.25 inch (6.4 mm) or less from any fillet radius:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-063
(1).A.Deleted.
Subtask 72-53-41-220-024
(2)Nicks and scratches in other areas:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-064
(2).A.Deleted.
Subtask 72-53-41-220-025
(3)Dents:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-065
(3).A.Deleted.
Subtask 72-53-41-220-026
I.Do an inspection of the aft seal mounting face for:
(1)Fretting:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-066
(1).A.Deleted.
Subtask 72-53-41-220-027
(2)Nicks, dents, and scratches:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
NOTE:
Shot peen the area, even if high metal is not present.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-067
(2).A.Deleted.
Subtask 72-53-41-220-028
J.Do an inspection of the disk bore:
(1)Nicks and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-068
(1).A.Deleted.
Subtask 72-53-41-220-029
(2)Dents:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-069
(2).A.Deleted.
Subtask 72-53-41-220-030
(3)Deleted.
Subtask 72-53-41-220-070
(3).A.Deleted.
Subtask 72-53-41-220-031
K.Do an inspection of area A for:
(1)Nicks, dents, scratches, or other damage:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-071
(1).A.Deleted.
Subtask 72-53-41-220-032
L.Do an inspection of area B for:
(1)Nicks, dents, scratches, or other damage:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-072
(1).A.Deleted.
Subtask 72-53-41-220-051
M.Do an inspection of area C for:
(1)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.001 inch (0.02 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-107
(2)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Not serviceable.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-033
N.Do an inspection of the aft seal rabbet OD, ID, and axial interfaces for:
(1)Fretting or wear:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.002 inch (0.05 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.001 inch (0.02 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
NOTE:
Shot peen the area, even if high metal is not present.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-052
(2)Nicks, dents, and scratches:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.002 inch (0.05 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.001 inch (0.02 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
NOTE:
Shot peen the area, even if high metal is not present.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-073
(2).A.Deleted.
Subtask 72-53-41-220-034
O.Do an inspection of the spline surfaces for:
(1)Pickup, high metal, or burrs:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-035
(2)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-036
(3)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.001 inch (0.02 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-053
(4)Nicks, dents, or scratches on the end faces, refer to Figure 801:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-074
(4).A.Deleted.
Subtask 72-53-41-220-037
P.Do an inspection of the coupling nut mate face for:
(1)Galling:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Not serviceable.
Maximum serviceable limit:
Up to 0.003 inch (0.07 mm) in depth and 40 percent of the face area, if there is no high metal. If high metal is removed, make sure that the undamaged portion of the coupling nut mate face flange thickness variation is 0.0005 inch (0.013 mm) or less with at least eight equally-spaced locations and the mate face is flat within 0.001 inch (0.03 mm).
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-075
(1).A.Deleted.
Subtask 72-53-41-220-081
(2)Circumferential scoring:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Not serviceable.
Maximum serviceable limit:
Up to 0.003 inch (0.07 mm) in depth and 40 percent of the face area, if there is no high metal. If high metal is removed, make sure that the undamaged portion of the coupling nut mate face flange thickness variation is 0.0005 inch (0.013 mm) or less with at least eight equally-spaced locations and the mate face is flat within 0.001 inch (0.03 mm).
Maximum repairable limit:
Up to 0.003 inch (0.07 mm) in depth and 40 percent of the area after high metal is removed.
Repair method:
Remove high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES), (GENERAL REMOVAL OF HIGH METAL (NO SHOT PEENING)) .
NOTE:
Fluorescent Penetration Inspection (FPI) is required after high metal removal.
Subtask 72-53-41-220-137
(3)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-138
(4)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-038
Q.Do an inspection of all other areas of the aft shaft:
(1)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-076
(1).A.Deleted.
Subtask 72-53-41-220-049
R.Do an inspection of the aft rabbet diameters BD and dimension BF for:
(1)Damage (for stage 2 disk P/N 2300M84P02   ):
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-801 (72-53-41, REPAIR 002) .
Subtask 72-53-41-220-077
(1).A.Damage (for stage 2 disk P/N 2445M92P01   , P/N 2383M86P02   and P/N 2383M86P03   ):
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-050
S.Do an inspection of the air hole cone forward outer corner:
(1)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-078
(1).A.Deleted.
Subtask 72-53-41-220-082
T.Do an inspection of the upper and lower, forward and aft rim rabbet fillets for:
(1)Pitting related to corrosion:
Maximum serviceable limit:
Not serviceable.
Repair method (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Replace the stage 2 disk.
Repair method:
Repair. Refer to TASK 72-53-41-300-803 (72-53-41, REPAIR 003) .
Subtask 72-53-41-220-089
(1).A.Deleted.
Subtask 72-53-41-220-083
U.Do an inspection of area D for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-41-300-802 (72-53-41, REPAIR 004).
Subtask 72-53-41-220-095
V.Do an inspection of the upper forward rim rabbet and the adjacent break edge for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.002 inch (0.05 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.0025 inch (0.063 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-096
(2)Fretting/wear:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.002 inch (0.05 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.0025 inch (0.063 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-097
W.Do an inspection of the upper aft rim rabbet and the adjacent break edge for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-098
(2)Fretting/wear:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Not serviceable.
Maximum serviceable limit:
Up to 0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-099
X.Do an inspection of the lower aft rim rabbet and the adjacent break edge for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.0045 inch (0.114 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.0035 inch (0.088 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
NOTE:
Shot peen the area, even if high metal is not present.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-100
(2)Fretting/wear:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.004 inch (0.10 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
NOTE:
Shot peen the area, even if high metal is not present.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-101
Y.Do an inspection of the axial and radial aft shaft ID kickstand for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.004 inch (0.10 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
NOTE:
Shot peen the area, even if high metal is not present.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-102
(2)Fretting/wear:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Not serviceable.
Maximum serviceable limit:
Up to 0.004 inch (0.10 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
NOTE:
Shot peen the area, even if high metal is not present.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-103
Z.Do an inspection of the stage 1 disk rabbet mate face for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
NOTE:
Shot peen the area, even if high metal is not present.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-104
(2)Fretting/wear:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484):
Not serviceable.
Maximum serviceable limit:
Up to 0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
NOTE:
Shot peen the area, even if high metal is not present.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-108
AA.Do an inspection of the HPT stage 2 disk spline end face (surface DT) for:
(1)Indentations because of the contact with the HPT stage 1 disk mating surface, refer to Figure 801:
NOTE:
The purpose of this inspection is to identify if the component has been over-torqued during the last assembly.
Maximum serviceable limit:
Any amount, if you cannot feel/detect the indentation with a 0.030 inch (0.76 mm) diameter ball scribe radially across the length of the end face at each spline location face. Refer to TASK 70-33-03-220-006 (SPECIAL INSPECTION FOR SURFACE FRETTING OR GALLING) . Report any indentation to fleet support for evaluation with dimensions, photos and component details for the mating HPT stage 1 disk.
Maximum repairable limit:
Not repairable.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-109
AB.Do an inspection of the lower forward rim fillet for:
(1)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.004 inch (0.10 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-110
(2)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.004 inch (0.10 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.001 inch (0.02 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-111
AC.Do an inspection of the upper forward rim rabbet fillet for:
(1)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.002 inch (0.05 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-112
(2)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.002 inch (0.05 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.001 inch (0.02 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-113
AD.Do an inspection of the upper aft rim rabbet fillet for:
(1)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.005 inch (0.12 mm) in depth, after the removal of high metal, if the damage does not intersect with the slot edge. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.004 inch (0.10 mm) in depth, after the removal of high metal, if the damage does not intersect with the slot edge. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-114
(2)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal, if the damage does not intersect with the slot edge. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal, if the damage does not intersect with the slot edge. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-115
AE.Do an inspection of the lower aft rim rabbet fillet for:
(1)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.002 inch (0.05 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.001 inch (0.02 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-116
(2)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.002 inch (0.05 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02):
Not serviceable.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-117
AF.Do an inspection of the aft hook ID fillet for:
(1)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-118
(2)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.002 inch (0.05 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-119
AG.Do an inspection of the retainer hook fillet for:
(1)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.004 inch (0.10 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-120
(2)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.001 inch (0.02 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-121
AH.Do an inspection of aft seal flange rabbet, aft seal flange forward face and aft seal flange bolthole for:
(1)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.004 inch (0.10 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-122
(2)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2300M84P02 and 2445M92P01):
Up to 0.005 inch (0.10 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 and 2383M86P03):
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-123
AI.Do an inspection of area E on aft shaft for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-124
AJ.Do an inspection of aft seal flange ID and pocket for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-125
AK.Do an inspection of air hole ID and OD surface for:
(1)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.005 inch (0.12 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-126
(2)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-127
AL.Do an inspection of air hole for:
(1)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.004 inch (0.10 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-128
(2)Scratches:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.001 inch (0.02 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-129
AM.Do an inspection of area F on aft shaft for:
(1)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-130
(2)Scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-131
AN.Do an inspection of area G on aft shaft for:
(1)Nicks and dents:
Maximum serviceable limit (for stage 2 disk part number 2383M86P02 with part serial numbers listed in GEnx-1B SB 72-0484 Table 11):
Not serviceable.
Maximum serviceable limit:
Up to 0.001 inch (0.02 mm) in depth, after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-132
(2)Scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the stage 2 disk.
5 . Dimensional Inspection.
Refer to Figure 803.
Subtask 72-53-41-220-039
A.Measure diameter AM (rim OD) at four equally-spaced locations 0.85 inch (21.6 mm) from the aft end face of the post. Compare the average of the four measurements to the average of the diameters stamped on the rim. For stage 2 disk P/N 2300M84P02   and P/N 2445M92P01   , refer to Subtask 72-53-41-220-084 (paragraph 5.B.(2)). For stage 2 disk P/N 2383M86P02   , and 2383M86P03   refer to Subtask 72-53-41-220-042 (paragraph 5.B.(3)).
* * * FOR ALL
Figure 803   Stage 2 Disk - Dimensional Inspection
Subtask 72-53-41-220-041
B.Do an inspection of the stage 2 disk for:
(1)Diameter B (for stage 2 disk part numbers 2300M84P02   and 2445M92P01   ):
Minimum serviceable limit:
7.205 inches (183.01 mm).
Maximum serviceable limit:
7.215 inches (183.26 mm).
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-106
(1).A.Diameter B (for stage 2 disk part number 2383M86P02   and 2383M86P03   ):
Minimum serviceable limit:
7.205 inches (183.01 mm).
Maximum serviceable limit:
7.2191 inches (183.365 mm).
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-084
(2)Diameter AM (for stage 2 disk P/N 2300M84P02   and P/N 2445M92P01   ):
Minimum serviceable limit:
Average of diameters stamped on the rim minus 0.0063 inch (0.160 mm).
Maximum serviceable limit:
Average of diameters stamped on the rim plus 0.010 inch (0.25 mm).
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-042
(3)Diameter AM (for stage 2 disk P/N 2383M86P02   and 2383M86P03   ):
Minimum serviceable limit:
Average diameters stamped on the rim minus 0.008 inch (0.203 mm).
Maximum serviceable limit:
Average of diameters stamped on the rim plus 0.010 inch (0.25 mm).
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-043
(4)Rabbet diameter BD:
Minimum serviceable limit:
21.814 inches (554.08 mm).
Maximum serviceable limit:
21.822 inches (554.27 mm).
Repair method:
Repair. Refer to TASK 72-53-41-300-801 (72-53-41, REPAIR 002).
Subtask 72-53-41-220-079
(4).A.Deleted.
Subtask 72-53-41-220-085
(5)Rabbet diameter AJ:
Minimum serviceable limit:
22.607 inches (574.22 mm).
Maximum serviceable limit:
22.616 inches (574.44 mm).
Repair method:
Replace the stage 2 disk.
Subtask 72-53-41-220-044
(6)Deleted.
Subtask 72-53-41-220-045
(7)Rabbet dimension BF (for stage 2 disk P/N 2300M84P02   ):
Minimum serviceable limit:
0.304 inch (7.73 mm).
Maximum serviceable limit:
0.308 inch (7.82 mm).
Repair method:
Repair. Refer to TASK 72-53-41-300-801 (72-53-41, REPAIR 002) .
Subtask 72-53-41-220-080
(7).A.Rabbet dimension BF (for stage 2 disk P/N 2445M92P01   , P/N 2383M86P02   , and 2383M86P03   ):
Minimum serviceable limit:
0.304 inch (7.73 mm).
Maximum serviceable limit:
0.308 inch (7.82 mm).
Repair method:
Replace the stage 2 disk.
6 . Post Inspection Procedure.
Subtask 72-53-41-380-002
A.Shotpeen the surfaces in the marked zones. Refer to Figure 804 and TASK 72-53-41-300-805 (72-53-41, REPAIR 006).
NOTE:
It is not necessary to peen again the zones that were peened during the repair cycle. Peening is necessary only for the zones that were not peened during the repair cycle.
(1)Deleted.
(2)Deleted.
(3)Deleted.
(4)Deleted.
(5)Deleted.
(6)Deleted.
* * * FOR ALL
Figure 804   (Sheet 1 ) HPT Stage 2 Disk - Post Inspection Shotpeening Zones
* * * FOR ALL
Figure 804   (Sheet 2 ) HPT Stage 2 Disk - Post Inspection Shotpeening Zones