* * * FOR ALL
TASK 72-31-46-200-801
1 . General.
A.This procedure gives instructions to do an inspection of the CDP rotating seal (CDP seal):
•
(01-460 , 72-31-00) (SIN 050NC)
•
(02-460 , 72-31-00) (SIN 050NC) (SB 72-0157 ).
B.Carefully examine the areas that follow because they are most important:
•
Bore
•
Seal serrations
•
Boltholes
•
Flanges
•
Fillets.
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
 
11C3366G01
Fixture, Turnover/Lifting CDP Seal HPCR (turnover fixture)
 
11C3366G02
Fixture, Turnover/Lifting CDP Seal HPCR (turnover fixture)
(2)Standard Tools and Equipment. None.
(3)Locally Manufactured Tools. None.
B.Consumable Materials.
 
Code No.
Description
 
C04-166
Shot, Peening, Conditioned Cut Wire (CCW14 steel shot)
 
C10-205
Almen Test Strips (test strips)
C.Referenced Procedures.
 
ATA No.
Description
 
70-32-02
Fluorescent Penetrant Inspection
 
70-33-03
Special Inspection for Surface Fretting or Galling
 
70-42-00
Blending and Removal of High Metal Procedures
 
70-47-01
Shotpeening
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 72-31-46-350-001
A.Remove the coating from the seal serrations of the CDP seal. Refer to TASK 72-31-46-300-801 (72-31-46, REPAIR 001).
Subtask 72-31-46-450-001
B.Install the CDP seal in the 11C3366   turnover fixture.
Subtask 72-31-46-230-001
C.Do a Class G fluorescent penetrant inspection of the CDP seal. Refer to TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION). Indications that are more than 0.015 inch (0.38 mm) are not permitted.
Subtask 72-31-46-230-002
D.Do a Class G non-aqueous wet developer (NAWD) fluorescent penetrant inspection of the CDP seal bolt holes. Refer to TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION).
Subtask 72-31-46-250-001
E.Deleted
4 . Visual Inspection.
Refer to Figure 801.
Subtask 72-31-46-220-053
A.Visual inspection serviceable limits for wear, fretting, galling, and REPAIR 003 are not applicable to compressor discharge pressure rotating seal P/N 2383M82P03   with part serial numbers listed in GEnx-1B SB 72-0484 Table 3 and Table 4.
Subtask 72-31-46-220-054
B.Visual inspection serviceable limits for nicks, dents, scratches, wear, fretting, galling, and REPAIR 003 are not applicable to compressor discharge pressure rotating seal P/N 2383M82P03   with part serial numbers listed in GEnx-1B SB 72-0484 Table 5.
Subtask 72-31-46-220-001
C.Do an inspection of all areas of the CDP seal for:
(1)Cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the CDP seal.
* * * FOR ALL
Figure 801   CDP Seal - Visual Inspection
Subtask 72-31-46-220-002
D.Do an inspection of the forward and aft outer web area for:
(1)Nicks, dents, tears, or scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-31-46-300-802 (72-31-46, REPAIR 002) .
Subtask 72-31-46-220-003
(2)Pits:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-004
E.Do an inspection of the forward and aft mating flange surfaces for:
(1)Nicks or dents:
•
For CDP seal part numbers 2116M68P01   and 2445M74P01   :
Maximum serviceable limit:
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 CDP seal.
•
For CDP seal part number 2383M82P03   and 2383M82P04   :
Maximum serviceable limit (for CDP seal part number 2383M82P03 with part serial numbers listed in GEnx-1B SB 72-0484 Table 5):
Not serviceable.
Maximum serviceable limit:
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:
Repair. Refer to TASK 72-31-46-300-802 (72-31-46, REPAIR 002) .
Subtask 72-31-46-220-005
(2)Pits (corrosion related):
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-006
(3)Galled parent metal:
Maximum serviceable limit:
Refer to TASK 70-33-03-220-006 (SPECIAL INSPECTION FOR SURFACE FRETTING OR GALLING) .
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-052
(4)Wear or fretting:
NOTE:
Refer to Figure 802 for an example of the fretting condition.
•
For CDP seal part numbers 2116M68P01   and 2445M74P01   :
Maximum serviceable limit:
0.0003 inch (0.007 mm) in depth.
Repair method:
Replace the CDP seal.
•
For CDP seal part numbers 2383M82P03   and 2383M82P04   :
Maximum serviceable limit (for CDP seal part number 2383M82P03 with part serial numbers listed in GEnx-1B SB 72-0484):
Not serviceable.
Maximum serviceable limit:
0.001 inch (0.02 mm) in depth.
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-055
(5)Scratches:
•
For CDP seal part numbers 2116M68P01   and 2445M74P01   :
Maximum serviceable limit:
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:
Repair. Refer to TASK 72-31-46-300-802 (72-31-46, REPAIR 002) .
•
For CDP seal part number 2383M82P03   and 2383M82P04   :
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-31-46-300-802 (72-31-46, REPAIR 002) .
Subtask 72-31-46-220-007
F.Do an inspection of the boltholes for:
(1)Nicks, dents, or scratches on the ID:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-008
(2)Nicks, dents, or scratches on the edge radius of boltholes:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-043
(3)Deleted.
Subtask 72-31-46-220-009
(4)Pits:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-010
G.Do an inspection of the forward rabbet (this does not include the rabbet fillet) for:
(1)Nicks, dents, or scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-31-46-300-802 (72-31-46, REPAIR 002) .
Subtask 72-31-46-220-011
(2)Pits:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-012
(3)Worn, fretted, or galled parent metal:
Maximum serviceable limit:
Refer to TASK 70-33-03-220-006 (SPECIAL INSPECTION FOR SURFACE FRETTING OR GALLING) .
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-013
H.Do an inspection of the forward rabbet fillet for:
(1)Nicks, dents, or scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-014
(2)Pits:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-015
I.Do an inspection of the aft rabbet (this does not include the rabbet fillet) for:
(1)Nicks, dents, or scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-31-46-300-802 (72-31-46, REPAIR 002) .
Subtask 72-31-46-220-016
(2)Pits:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-017
(3)Worn, fretted, or galled parent metal:
Maximum serviceable limit:
Refer to TASK 70-33-03-220-006 (SPECIAL INSPECTION FOR SURFACE FRETTING OR GALLING) .
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-018
J.Do an inspection of the aft rabbet fillet for:
(1)Nicks, dents, or scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-019
(2)Pits:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the CDP seal.
Subtask 72-31-46-220-020
K.Do an inspection of the seal serrations for:
(1)Nicks, tears, dents, or bends:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-31-46-300-804 (72-31-46, REPAIR 004).
Subtask 72-31-46-220-040
(2)Missing coating:
Maximum serviceable limit:
Lack of coating permitted up to 0.300 inch (7.62 mm) maximum with a total cumulative length of 1.50 inch (38.1 mm) maximum per tooth. Minimum spacing between areas with lack of coating is 0.50 inch (12.7 mm).
Repair method:
Repair. Refer to TASK 72-31-46-300-801 (72-31-46, REPAIR 001) .
Subtask 72-31-46-220-022
L.Do an inspection of the bore for:
(1)Pits:
Maximum serviceable limit:
Not serviceable.
Repair method (for CDP seal part number 2383M82P03 with part serial numbers listed in GEnx-1B SB 72-0484):
Replace the CDP seal.
Repair method:
Repair. Refer to TASK 72-31-46-300-803 (72-31-46, REPAIR 003) .
Subtask 72-31-46-220-023
(2)Marks, nicks, dents, or scratches:
Maximum serviceable limit:
Not serviceable.
Maximum repairable limit:
Any amount, if damage can be removed with one blend, 0.003 inch (0.07 mm) in depth and 1.00 inch (25.4 mm) in length.
Repair method:
Repair. Refer to TASK 72-31-46-300-802 (72-31-46, REPAIR 002) . Manual (hand) blend only. Power blending is not permitted.
Subtask 72-31-46-220-041
M.Do an inspection of all other areas of the CDP seal not included above for:
(1)Nicks, dents, or scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-31-46-300-802 (72-31-46, REPAIR 002) .
Subtask 72-31-46-220-042
(2)Pits:
Maximum serviceable limit:
Not serviceable.
Repair method (for CDP seal part number 2383M82P03 with part serial numbers listed in GEnx-1B SB 72-0484):
Replace the CDP seal.
Repair method:
Repair. Refer to TASK 72-31-46-300-803 (72-31-46, REPAIR 003) .
* * * FOR ALL
Figure 802   Examples of the Fretting on the Forward and Aft Mating Flange Surfaces
5 . Dimensional Inspection.
Refer to Figure 803.
Subtask 72-31-46-220-024
A.Measure diameters at a minimum of eight locations equally spaced apart. Calculate the average to find the diameter.
* * * FOR ALL
Figure 803   CDP Seal - Dimensional Inspection
Subtask 72-31-46-220-025
B.Deleted.
Subtask 72-31-46-220-026
C.Do an inspection of the CDP seal diameters for:
(1)Diameter D (free state):
Minimum serviceable limit:
15.198 inches (386.03 mm).
Maximum serviceable limit:
15.202 inches (386.13 mm).
  Repair method:
Repair. Refer to TASK 72-31-46-300-801 (72-31-46, REPAIR 005).
Subtask 72-31-46-220-028
(2)Diameter B (free state):
Minimum serviceable limit:
15.242 inches (387.15 mm).
Maximum serviceable limit:
15.246 inches (387.25 mm).
  Repair method:
Repair. Refer to TASK 72-31-46-300-801 (72-31-46, REPAIR 005).
Subtask 72-31-46-220-029
(3)Diameter AP (free state) (with coating):
Minimum serviceable limit:
16.358 inches (415.49 mm).
Maximum serviceable limit:
16.362 inches (415.59 mm).
Repair method:
Repair. Refer to TASK 72-31-46-300-801 (72-31-46, REPAIR 001) .
6 . Post Inspection Procedure.
Subtask 72-31-46-380-005
A.Shotpeen the CDP seal forward and aft flange areas. Refer to TASK 70-47-01-380-016 (SHOTPEENING), Figure 804, and do as follows:
(1)Use C04-166  CCW14 steel shot.
(2)Shotpeen to an intensity of 6-12N.
(3)A minimum coverage of 125 percent is necessary.
(4)Verification of intensity is necessary on the peened areas. Use C10-205  test strips.
(5)Overspray is permitted.
* * * FOR ALL
Figure 804   CDP Seal Post Inspection Shotpeening Zones
7 . Coating procedure.
Subtask 72-31-46-350-002
A.Apply coating to the seal serrations again. Refer to TASK 72-31-46-300-801 (72-31-46, REPAIR 001).