* * * FOR ALL
TASK 72-53-44-200-801
1 . General.
  A.This procedure gives instructions to do an inspection of the high pressure turbine (HPT) aft seal (aft seal) (01-090 , 72-53-00) (SIN 150B4).
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
 
11C3484G02
Fixture, Restraining - Aft Seal, HPT Rotor
(2)Standard Tools and Equipment. None.
(3)Locally Manufactured Tools. None.
B.Consumable Materials. None.
C.Referenced Procedures.
 
ATA No.
Description
 
70-32-02
Fluorescent Penetrant Inspection
 
70-42-00
Blending and Removal of High Metal Procedures
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 72-53-44-230-001
NOTE:
Make sure that the coating on the rack of four seal serrations has been removed before the inspection of the aft seal. Refer to TASK 72-53-44-300-802 (72-53-44, REPAIR 002).
A.Do a Class G fluorescent penetrant inspection (FPI) of the aft seal. Refer to TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION) and as follows:
•
Indications more than 0.015 inch (0.38 mm) are not permitted.
4 . Visual Inspection.
Refer to Figure 801.
Subtask 72-53-44-200-001
A.Do an inspection of all areas of the aft seal for:
(1)Cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the aft seal.
Subtask 72-53-44-220-001
(2)Deleted.
Subtask 72-53-44-220-002
(3)Discoloration:
Maximum serviceable limit:
Any amount.
Repair method:
Replace the aft seal.
Subtask 72-53-44-220-026
B.Do an inspection of the outer air hole for:
(1)Deleted.
Subtask 72-53-44-220-027
(2)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the aft seal.
Subtask 72-53-44-220-035
C.Do an inspection of the lower rack seal teeth fillets for:
(1)Deleted.
Subtask 72-53-44-220-036
(2)Nicks, dents, and scratches:
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 72-53-44-300-801 (72-53-44, Repair 001).
Subtask 72-53-44-220-037
(3)Deleted.
Subtask 72-53-44-220-038
D.Do an inspection of the damper tab fillets for:
(1)Deleted.
Subtask 72-53-44-220-039
(2)Nicks, dents, and scratches:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, Repair 001) .
Subtask 72-53-44-220-040
(3)Deleted.
Subtask 72-53-44-220-041
E.Do an inspection of the web to seal rack aft inner diameter fillet for:
(1)Deleted.
Subtask 72-53-44-220-042
(2)Scratches:
Maximum serviceable limit:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-053
(3)Nicks and dents:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-043
(4)Deleted.
Subtask 72-53-44-220-028
F.Do an inspection of the catenary arm inner diameter for:
(1)Deleted.
Subtask 72-53-44-220-029
(2)Scratches:
Maximum serviceable limit:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-054
(3)Nicks and dents:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
* * * FOR ALL
Figure 801   (Sheet 1 ) Aft Seal - Inspection
* * * FOR ALL
Figure 801   (Sheet 2 ) Aft Seal - Inspection
* * * FOR ALL
Figure 801   (Sheet 1 ) Aft Seal - Inspection
* * * FOR ALL
Figure 801   (Sheet 1 ) Aft seal - Inspection
Subtask 72-53-44-220-003
G.Do an inspection of area XA (outer radial surface only) for:
(1)Nicks and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, Repair 001).
Subtask 72-53-44-220-004
(2)Dents in area XA:
Maximum serviceable limit:
Not serviceable.
Maximum repairable limit:
0.01 inch (0.3 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:
Blend with a minimum radius of 0.25 inch (6.4 mm). Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Subtask 72-53-44-220-005
H.Do an inspection of outer seal serrations for:
(1)Deleted.
Subtask 72-53-44-220-006
(2)Bending:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, Repair 001).
Subtask 72-53-44-220-031
(3)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, Repair 001).
Subtask 72-53-44-220-048
(4)Missing coating:
Maximum serviceable limit:
Any amount, 0.300 inch (7.62 mm) in length, 1.000 inch (25.40 mm) minimum separation. The total length of missing coating must not be more than 1.5 inches (38.10 mm) for each tooth.
Repair method:
Repair. Refer to TASK 72-53-44-300-802 (72-53-44, REPAIR 002).
Subtask 72-53-44-220-032
I.Do an inspection of the sump seal teeth for:
(1)Deleted.
Subtask 72-53-44-220-033
(2)Bending:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, Repair 001).
Subtask 72-53-44-220-034
(3)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, Repair 001).
Subtask 72-53-44-220-009
J.Do an inspection of the inner air holes (48 holes) and aft inner flange boltholes (15 boltholes) for:
(1)Nicks, dents, and scratches:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, Repair 001).
Subtask 72-53-44-220-049
(2)Fretting and wear:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, Repair 001).
Subtask 72-53-44-220-010
K.Do an inspection of the outer rabbet, inner rabbet, and inner flange rabbet for:
(1)Fretting:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, Repair 001).
Subtask 72-53-44-220-011
(2)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, Repair 001).
Subtask 72-53-44-220-012
L.Do an inspection of the seal bore and hub face 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) deep. This condition is from new production and will have a surface finish that shows signs of shot peen. These indications are permitted.
(1)Nicks, dents, and scratches:
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 72-53-44-300-801 (72-53-44, Repair 001).
Subtask 72-53-44-220-013
(2)Damage in the edge radius:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, Repair 001).
Subtask 72-53-44-220-050
M.Do an inspection of the forward and aft faces of the flange for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit:
Up to 0.003 inch (0.07 mm) in depth, after the removal of high metal.
Repair method:
Remove high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) , Subtask 70-42-00-350-038.
Subtask 72-53-44-220-055
N.Do an inspection of the flange rabbet fillet for:
(1)Scratches:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-056
(2)Nicks and dents:
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 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-057
O.Do an inspection of the upper rack seal teeth fillets for:
(1)Scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-058
(2)Nicks and dents:
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 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-059
P.Do an inspection of the bore to aft cone arm inner diameter fillet for:
(1)Scratches:
Maximum serviceable limit:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-060
(2)Nicks and dents:
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 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-061
Q.Do an inspection of the lower seal rack to flange fillet for:
(1)Scratches:
Maximum serviceable limit:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-062
(2)Nicks and dents:
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 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-063
R.Do an inspection of the catenary flange fillets for:
(1)Scratches:
Maximum serviceable limit:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-064
(2)Nicks and dents:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-065
S.Do an inspection of the flange to cone arm inner diameter fillet for:
(1)Scratches:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-066
(2)Nicks and dents:
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 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-067
T.Do an inspection of the web to seal rack forward inner diameter fillet for:
(1)Scratches:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-068
(2)Nicks and dents:
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 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-069
U.Do an inspection of the aft cone arm and aft cone arm to lower rack fillet for:
(1)Nicks, dents, and scratches:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-070
V.Do an inspection of the catenary arm slot for:
(1)Scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-071
(2)Nicks and dents:
Maximum serviceable limit:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-072
W.Do an inspection of the bore to web transition fillet (forward) for:
(1)Scratches:
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 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-073
(2)Nicks and dents:
Maximum serviceable limit:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-074
X.Do an inspection of the bore to web transition fillet (aft) for:
(1)Scratches:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-075
(2)Nicks and dents:
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 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-076
Y.Do an inspection of the lower seal rack ID for:
(1)Scratches:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-077
(2)Nicks and dents:
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 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-078
Z.Do an inspection of the forward and aft web for:
(1)Scratches:
Maximum serviceable limit:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-079
(2)Nicks and dents:
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:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-080
AA.Do an inspection of the catenary arm outer diameter for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-081
AB.Do an inspection of the area XE (does not include damper tab fillets) for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-082
AC.Do an inspection of the area XF (does not include damper tab fillets) for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-083
AD.Do an inspection of the upper rack seal aft face for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-084
AE.Do an inspection of the lower rack seal aft face for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-085
AF.Do an inspection of the area XG for:
(1)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-051
AG.Do an inspection of the damper hook inner diameter (ID) for:
(1)Fretting, wear, and metal deposits:
Maximum serviceable limit:
Not serviceable.
Maximum repairable limit:
A maximum depth of 0.005 inch (0.12 mm).
Repair method:
Repair as follows:
• Machine to remove the damage on the damper hook ID with a minimum material removal
• Maximum permitted diameter of damper hook ID is 14.720 inch (373.88 mm)
• If high metal is remaining, remove. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES)
• Etch, FPI, and shotpeen the repaired area. Refer to TASK 72-53-44-300-801 (72-53-44, REPAIR 001).
Subtask 72-53-44-220-052
AH.Do an inspection of catenary arm flange slot bottom for:
(1)Fretting and wear:
Maximum serviceable limit:
0.0025 inch (0.06 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 aft seal.
5 . Dimensional Inspection.
Refer to Figure 801.
Subtask 72-53-44-220-014
A.Measure the diameters at eight equally-spaced locations. Calculate the average diameter dimensions. Compare the average diameters to the dimensions given in the dimensional inspection table.
Subtask 72-53-44-220-015
B.Restrain the aft seal in 11C3484   restraining fixture. Measure all dimensions with surface B held round to 0.002 inch (0.05 mm) and surface D held flat to 0.002 inch (0.05 mm). If the parts follow necessary roundness and flatness requirements in free state, part dimensions can be measured in free state. Refer to Figure 802.
* * * FOR ALL
Figure 802   HPT Rotor Aft Seal Restraining Fixture
Subtask 72-53-44-220-016
C.Do an inspection of the aft seal for:
(1)Diameter V (V1, V2, V3, and V4) (coated seal teeth):
Minimum serviceable limit:
15.544 inches (394.82 mm).
Maximum serviceable limit:
15.548 inches (394.91 mm).
Repair method:
Repair. Refer to TASK 72-53-44-300-802 (72-53-44, REPAIR 002).
Subtask 72-53-44-220-017
(2)Diameter X (X1, X2, and X3):
Minimum serviceable limit:
10.578 inches (268.69 mm).
Maximum serviceable limit:
10.582 inches (268.78 mm).
Repair method:
Replace the aft seal.
Subtask 72-53-44-220-030
(3)Dimension W:
Minimum serviceable limit:
2.814 inches (71.48 mm).
Maximum serviceable limit:
2.824 inches (71.72 mm).
Repair method:
Replace the aft seal.
6 . Application of Coating
Subtask 72-53-44-330-001
A.Reapply the coating to seal serrations V1, V2, V3 and V4. Refer to Repair.