* * * FOR ALL
TASK 72-00-32-200-801
1 . General.
A.This procedure gives instructions to do an inspection of the compressor stator assembly (forward stator assembly).
•
(05-200 , 72-30-00) (SIN 07000)
•
(05-201 , 72-30-00) (SIN 07000) (SB 72-0158).
B.Any sub-assembly or part removed for access or limited workscope must be inspected in accordance with criteria in this section. If there is no criteria, the sub-assembly or part must receive a general visual inspection (GVI) for continued serviceability. Refer to TASK 72-00-00-200-805 (72-00-00, INSPECTION 001) . If required, the component can be hand-cleaned to do a visual inspection. Refer to TASK 70-21-01-110-001 (CLEANING METHOD 1 - SOLVENT DEGREASING) or TASK 70-21-03-160-001 (CLEANING METHOD 3 - STEAM CLEANING) . GVI can not be done to components identified in TASK 05-21-00-200-801 (05-21-00, LIFE LIMITS 001) that become piece part. These components must have their appropriate mandatory inspections done, unless stated differently in an applicable Service Bulletin.
C.If you find an assembly or part to be unserviceable during this procedure, refer to the applicable section of the engine manual for more disassembly and inspection procedures for that assembly or part.
D.If you must fully disassemble the forward stator assembly, this inspection is not necessary. Refer to the applicable section of the engine manual for the inspection procedure for each part.
E.If you remove the variable vanes during this procedure, you must install them again in the same circumferential location.
F.The forward stator assembly halves are a matched set, and if you replace one, you must replace them together.
G.The maintenance instructions in this Manual do not purport to cover all details or variations in equipment, nor do they provide for every possible contingency to be met in connection with installation, operation, maintenance, or GEAE certified repair facilities. The maintenance instructions are intended to be all-inclusive for a complete teardown and overhaul of the component or sub assembly. The individual procedures as written are one sequence based on General Electric experience. Alternate sequences to these maintenance instructions are at the discretion of the operator and/or overhaul shop provided the intent of the maintenance instructions is met. The operator and/or overhaul shop can select specific tasks to partially disassemble and assemble hardware or subassemblies based upon the on demand maintenance requirement of the individual engine work scope provided the final assembly configuration and requirements contained in the manual have been met.
2 . Tools, Equipment, and Materials.
NOTE:
You can use equivalent alternatives for tools, equipment, and consumable materials.
A.Tools and Equipment.
(1)Special Tools. None.
(2)Standard Tools and Equipment. None.
(3)Locally Manufactured Tools. None.
B.Consumable Materials. None.
C.Referenced Procedures.
 
ATA No.
Description
 
05-21-00
Life Limits 001
 
70-21-01
Cleaning Method 1 - Solvent Degreasing
 
70-21-03
Cleaning Method 3 - Steam Cleaning
 
70-32-02
Fluorescent Penetrant Inspection
 
70-42-00
Blending And Removal Of High Metal Procedures
 
72-00-00
Inspection 001
D.Expendable Parts. None.
3 . Specific Inspection Procedure.
Subtask 72-00-32-230-001
A.Do a Class A fluorescent penetrant inspection of any visual indication to confirm cracks. Refer to TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION).
4 . Visual Inspection.
CAUTION:
DO NOT PROCESS TITANIUM PARTS IN COMPOUNDS THAT CONTAIN HALOGEN. DO NOT APPLY INSPECTION MATERIALS TO TITANIUM WITH AEROSOL-TYPE DISPENSERS THAT HAVE HALOGEN COMPOUNDS AS PROPELLANTS.
Subtask 72-00-32-220-001
A.Do an inspection of the HPC stator forward case assembly (case assembly) (073A0) as follows. Refer to Figure 801.
(1)Cracks in the outer surface (skin):
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the case assembly.
* * * FOR ALL
Figure 801   (Sheet 1 ) Forward Stator Assembly
* * * FOR ALL
Figure 801   (Sheet 2 ) Forward Stator Assembly
Subtask 72-00-32-220-002
(2)Cracks in the ribs (stage 2 only - between the VSV holes):
Maximum serviceable limit:
Any amount, if the cracks do not go into the skin.
Maximum repairable limit:
Any amount. The depth of all blends must not go below the skin of the case assembly.
Repair method:
Remove all cracks with a blend procedure. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-00-32-220-003
(3)Cracks in the horizontal and circumferential flanges:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the case assembly.
Subtask 72-00-32-220-004
(4)Nicks and scratches on the mating surfaces of the horizontal flanges:
Maximum serviceable limit:
Any amount, 0.020 inch (0.51 mm) in depth, if they do not go fully across the mating surface.
Maximum repairable limit:
Any amount, all lengths, 0.030 inch (0.76 mm) in depth, if the blend does not go fully across the mating surface.
Repair method:
Remove the damage with a blend procedure. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-00-32-220-005
(5)Nicks and scratches on the mating surfaces of the circumferential flanges:
Maximum serviceable limit:
Any amount, 0.007 inch (0.18 mm) in depth, if they do not go fully across the mating surface.
Maximum repairable limit:
Any amount, all lengths, 0.010 inch (0.25 mm) in depth, if the blend does not go fully across the mating surface.
Repair method:
Remove the damage with a blend procedure. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-00-32-220-006
(6)Nicks, pits, scores, and scratches on all surfaces:
Maximum serviceable limit:
Any amount, all lengths, 0.010 inch (0.25 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 repairable limit:
Any amount, all lengths, 0.020 inch (0.51 mm) in depth, if the radius at the bottom of the blend is a minimum of 0.050 inch (1.27 mm).
Repair method:
Remove the damage with a blend procedure. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-00-32-220-007
(7)Discoloration (hot spots) on all surfaces:
Maximum serviceable limit:
Any amount, if the metal is not crazed and there are no related cracks.
Repair method:
Replace the case assembly.
Subtask 72-00-32-220-008
(8)Rubs and gouges in the flowpath surface:
Maximum serviceable limit:
Any amount, 0.007 inch (0.18 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 repairable limit:
Any amount, 0.010 inch (0.25 mm) in depth, if the thickness of the liner is more than 0.060 inch (1.52 mm).
Repair method:
Remove the rub or gouge with a blend procedure. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-00-32-220-009
(9)Nicks, dents, and scratches in the flowpath surface:
Maximum serviceable limit:
Any amount, 0.020 inch (0.51 mm) in depth.
Maximum repairable limit:
Any amount, 0.010 inch (0.25 mm) in depth, if the thickness of the liner is more than 0.060 inch (1.52 mm).
Repair method:
Remove the rub or gouge with a blend procedure. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-00-32-220-010
(10)Local scabs (positive metal deposits from the blades) on the flowpath surface:
Maximum serviceable limit:
Not serviceable.
Maximum repairable limit:
Any amount.
Repair method:
Remove the deposits with a blend procedure. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES). Keep the heat and removal of parent material from the blend procedure to a minimum.
Subtask 72-00-32-220-011
(11)Loose, missing, or damaged insert threads on the mounting pads, bosses, and aft circumferential flange:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the self-locking insert. Refer to TASK 72-32-01-300-802 (72-32-01, REPAIR 002).
Subtask 72-00-32-220-012
(12)Damaged threads on the stages 1 thru 4 borescope plugs (070AK, 070AL, 070AM, 070AB) and ports:
Maximum serviceable limit:
Not serviceable.
Maximum repairable limit:
Any amount, if the total (cumulative) damage is not more than one full thread, and a minimum of 50 percent of the lead-in thread is there.
Repair method:
Remove the damage with a fine file or honing stone.
Subtask 72-00-32-220-016
B.Do an inspection of area A (critical) of the HPC stages 1 thru 4 variable stator vanes (VSVs) (072A1, 072A2, 072A3, 072A4) as follows. Refer to Figure 802.
NOTE:
Damage on one side of an airfoil that causes protrusion on the opposite side of the airfoil is serviceable, if the damage is in the serviceable limits.
NOTE:
The same damage on both sides of the airfoil, in the same location, is serviceable if the total damage is in the serviceable limits.
(1)Nicks, dents, pits, and scratches:
Maximum serviceable limit:
Any amount, 0.006 inch (0.15 mm) in depth, and not more than 0.03 inch (0.8 mm) in length or diameter.
Repair method:
Replace the VSV.
* * * FOR ALL
Figure 802   VSVs - Stages 1 thru 4
Subtask 72-00-32-220-017
(2)Tears and cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the VSV.
Subtask 72-00-32-220-018
(3)Transverse scratches in the fillets:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the VSV.
Subtask 72-00-32-220-019
(4)Wear that is caused where the shroud touches the VSV:
Maximum serviceable limit:
Any amount.
Repair method:
Replace the VSV.
Subtask 72-00-32-220-020
C.Do an inspection of area C (center panel) of each of the stages 1 thru 4 VSVs as follows. Refer to Figure 802.
NOTE:
Damage on one side of an airfoil that causes protrusion on the opposite side of the airfoil is serviceable, if the damage is in the serviceable limits.
NOTE:
The same damage on both sides of the airfoil, in the same location, is serviceable if the total damage is in the serviceable limits.
(1)Nicks, dents, and pits:
Maximum serviceable limit:
Any amount, 0.006 inch (0.15 mm) in depth, and not more than 0.03 inch (0.8 mm) in length or diameter.
Repair method:
Replace the VSV.
Subtask 72-00-32-220-021
(2)Tears and cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the VSV.
Subtask 72-00-32-220-022
(3)Scratches:
Maximum serviceable limit:
Any amount, 0.006 inch (0.15 mm) in depth, or 0.03 inch (0.8 mm) in length.
Repair method:
Replace the VSV.
Subtask 72-00-32-220-023
D.Do an inspection of the leading/trailing edges of each of the stages 1 thru 4 VSVs as follows. Refer to Figure 802.
NOTE:
Damage on one side of an airfoil that causes protrusion on the opposite side of the airfoil is serviceable, if the damage is in the serviceable limits.
NOTE:
The same damage on both sides of the airfoil, in the same location, is serviceable if the total damage is in the serviceable limits.
(1)Nicks, dents, and pits:
Maximum serviceable limit:
•
Stage 1: Any amount, 0.010 inch (0.25 mm) in depth
•
Stage 2: Any amount, 0.005 inch (0.13 mm) in depth
•
Stage 3: Any amount, 0.010 inch (0.25 mm) in depth
•
Stage 4: Any amount, 0.010 inch (0.25 mm) in depth.
For all stage limits applied after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Maximum repairable limit:
•
Stage 1: Any amount, 0.020 inch (0.51 mm) in depth in the leading edge or trailing edge at area C
•
Stage 2: Any amount, 0.015 inch (0.38 mm) in depth in the leading edge or trailing edge at area C
•
Stage 3: Any amount, 0.015 inch (0.38 mm) in depth in the leading edge or trailing edge at area C
•
Stage 4: Any amount, 0.015 inch (0.38 mm) in depth in the leading edge or trailing edge at area C.
Repair method:
Remove the damage with a blend procedure. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-00-32-220-024
(2)Erosion on the leading edge:
Maximum serviceable limit:
Any amount, if the chord length is not decreased more than 0.021 inch (0.53 mm) from its initial length.
Repair method:
Replace the VSV.
Subtask 72-00-32-220-025
(3)Tears and cracks:
Maximum serviceable limit:
Not serviceable.
Maximum repairable limit:
•
Stage 1: Any amount, 0.020 inch (0.51 mm) in depth in the leading edge or trailing edge at area C
•
Stage 2: Any amount, 0.015 inch (0.38 mm) in depth in the leading edge or trailing edge at area C
•
Stage 3: Any amount, 0.015 inch (0.38 mm) in depth in the leading edge or trailing edge at area C
•
Stage 4: Any amount, 0.015 inch (0.38 mm) in depth in the leading edge or trailing edge at area C.
Repair method:
Remove the damage with a blend procedure. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-00-32-220-026
(4)Deposits:
Maximum serviceable limit:
Any amount, 0.005 inch (0.13 mm) in thickness.
Maximum repairable limit:
Any amount, if there are no scratches.
Repair method:
Remove deposits with a fine emery cloth.
Subtask 72-00-32-220-027
(5)Erosion on the trailing edge:
Maximum serviceable limit:
Any amount, if the erosion is smooth, and the chord length is not decreased from its initial length.
Repair method:
Replace the VSV.
Subtask 72-00-32-220-034
E.Do an inspection of all areas of the stages 1 thru 4 VSV lever arms (lever arms) as follows. Refer to Figure 803.
•
Stage 1 lever arms: (071D1, 071D6)
•
Stage 2 lever arms: (071D2, 071D7)
•
Stage 3 lever arms: (071D3, 071D8)
•
Stage 4 lever arms: (071D4, 071D9).
(1)Cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the lever arm.
* * * FOR ALL
Figure 803   VSV Actuation System
Subtask 72-00-32-220-035
(2)Distortion:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the lever arm.
Subtask 72-00-32-220-036
(3)Nicks, dents, and scratches in area H:
Maximum serviceable limit:
0.001 inch (0.03 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 lever arm.
Subtask 72-00-32-220-037
(4)Nicks, dents, and scratches in area G:
Maximum serviceable limit:
Any amount, 0.006 inch (0.15 mm) in depth after the removal of high metal, if the bottom of the damage does not have a sharp point. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Maximum repairable limit:
Any amount, if the damage can be completely removed with a blend procedure that is not more than 0.010 inch (0.25 mm) in depth.
Repair method:
Remove the damage with a blend procedure. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-00-32-220-038
F.Do an inspection of the pins of each lever arm as follows. Refer to Figure 803.
(1)Distortion:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the lever arm.
Subtask 72-00-32-220-046
(2)Looseness of the heads:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the lever arm.
Subtask 72-00-32-220-047
(3)Breaks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the lever arm.
Subtask 72-00-32-220-039
G.Do an inspection of all areas of the HPC stator stages 1 thru 4 VSV upper and lower actuating rings (actuating rings). Refer to Figure 803.
•
Stage 1 actuating rings: (071A1, 071A6)
•
Stage 2 actuating rings: (071A2)
•
Stage 3 actuating rings: (071A3)
•
Stage 4 actuating rings: (071A4, 071A9).
(1)Cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the actuating ring.
Subtask 72-00-32-220-048
(2)Distortion (twists or bends):
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the actuating ring.
Subtask 72-00-32-220-049
(3)Nicks and scratches:
Maximum serviceable limit:
Four in each segment, 0.010 inch (0.25 mm) in depth. Any amount, 0.005 inch (0.13 mm) in depth.
Maximum repairable limit:
Any amount, if you can fully remove the scratches with a blend procedure that is not more than 0.010 inch (0.25 mm) in depth.
Repair method:
Blend to remove the damage. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-00-32-220-050
(4)Dents:
Maximum serviceable limit:
Any amount, 0.015 inch (0.38 mm) in depth. Six defects 0.030 inch (0.76 mm) in depth are permitted on each segment, if they are 2.0 inches (51 mm) or more apart.
Repair method:
Replace the actuating ring.
Subtask 72-00-32-220-041
H.Do an inspection of the inserts of each actuating ring as follows. Refer to Figure 803.
(1)Inserts that are broken or worn:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the insert.
Subtask 72-00-32-220-042
I.Do an inspection of the stages 1 thru 4 VSV actuation ring spacers (spacers) (075T0) on the actuating ring as follows. Refer to Figure 803.
(1)Cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the spacer.
Subtask 72-00-32-220-051
(2)Distortion:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the spacer.
Subtask 72-00-32-220-052
(3)A spacer rub button that is loose in its metallic support:
Maximum serviceable limit:
Any amount as long as no material is missing.
Repair method:
Replace the spacer.
Subtask 72-00-32-220-053
(4)Spacer button wear:
Maximum serviceable limit:
Minimum of 0.02 inch (0.5 mm) of button protruding from metal surface.
Repair method:
Replace the spacer.
Subtask 72-00-32-220-043
J.Do an inspection of the HPC stator stages 1 thru 4 vane shrouds (vane shrouds) as follows. Refer to Figure 801 and Figure 804.
•
Stage 1 vane shrouds: (071B1, 071B6)
•
Stage 2 vane shrouds: (071B2)
•
Stage 3 vane shrouds: (071B3)
•
Stage 4 vane shrouds: (071B4, 071B9).
(1)Cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the vane shroud.
* * * FOR ALL
Figure 804   Vane Shrouds
Subtask 72-00-32-220-054
(2)Nicks and scratches:
Maximum serviceable limit:
Any amount, 0.015 inch (0.38 mm) in depth.
Maximum repairable limit:
Any amount, 0.051 inch (1.30 mm) in depth.
Repair method:
Remove the nick or scratch with a blend procedure. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Subtask 72-00-32-220-055
(3)Dents:
Maximum serviceable limit:
Any amount, 0.025 inch (0.64 mm) in depth.
Maximum repairable limit:
Any amount, 0.051 inch (1.30 mm) in depth.
Repair method:
Remove the dent with a blend procedure. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Subtask 72-00-32-220-044
K.Do an inspection of the HPC stator stages 1 and 2 interstage seals (interstage seals) (076A1, 076AA, 076A2, 076AB) as follows. Refer to Figure 805.
(1)Cracks in the backing strip and stop block:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the interstage seal.
* * * FOR ALL
Figure 805   (Sheet 1 ) Interstage Seals
* * * FOR ALL
Figure 805   (Sheet 2 ) Interstage Seals
Subtask 72-00-32-220-058
(2)Nicks, dents, and scores in the backing strip and stop block:
Maximum serviceable limit:
Any amount, 0.010 inch (0.25 mm) in depth.
Repair method:
Replace the interstage seal.
Subtask 72-00-32-220-059
(3)Grooves in the seal land:
Maximum serviceable limit:
Any amount, 0.05 inch (1.3 mm) in depth and 0.280 inch (7.11 mm) in width (stage 1), or any width (stage 2) if there is no groove breakout on seal land edge.
Repair method:
Replace the interstage seal.
Subtask 72-00-32-220-045
L.Do an inspection of the HPC stator stages 3 and 4 interstage seals (interstage seals) (076A3, 076AC, 076A4, 076AD) as follows. Refer to Figure 805.
(1)Cracks in the backing strip and stop block:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the interstage seal.
Subtask 72-00-32-220-060
(2)Grooves in the honeycomb:
Maximum serviceable limit:
Any amount, 0.045 inch (1.14 mm) in depth and 0.20 inch (5.1 mm) in width.
Repair method:
Repair. Refer to TASK 72-32-05-300-801 (72-32-05, REPAIR 001) for the stage 3 interstage seal. Refer to TASK 72-32-06-300-801 (72-32-06, REPAIR 001) for the stage 4 interstage seal.
Subtask 72-00-32-220-061
(3)Damaged cells:
Maximum serviceable limit:
3.0 sq in. (19 sq cm) total area in each stage, if the damage does not go across the seal axially.
Repair method:
Repair. Refer to TASK 72-32-05-300-801 (72-32-05, REPAIR 001) for the stage 3 interstage seal. Refer to TASK 72-32-06-300-801 (72-32-06, REPAIR 001) for the stage 4 interstage seal.
Subtask 72-00-32-220-070
M.Do an inspection of the inner stage 4 vane sector tongue (deflector rail) for. Refer to Figure 806.
(1)Fretting and/or wear at the location of contact with the aft cover (deflector) at anti-rotation tab:
Maximum serviceable limit:
0.030 inch (0.76 mm) maximum permitted, 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 72-32-01-300-803 (72-32-01, REPAIR 003).
NOTE:
If required, TASK 72-32-01-300-803 (72-32-01, REPAIR 003) can be used to repair the inner stage 4 vane sector tongue (deflector rail) with some disassembly of the HPC Stator assembly.
Subtask 72-00-32-220-072
(2)Fretting and/or wear at the location of contact with the aft cover (deflector) not at the anti-rotation tab:
Maximum serviceable limit:
0.040 inch (1.02 mm) in depth, whole circumference or 0.060 inch (1.52 mm) in depth (locally, maximum 8.3 inches (211 mm) in circumferential length), 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 72-32-01-300-803 (72-32-01, REPAIR 003).
NOTE:
If required, TASK 72-32-01-300-803 (72-32-01, REPAIR 003) can be used to repair the inner stage 4 vane sector tongue (deflector rail) with some disassembly of the HPC Stator assembly.
Subtask 72-00-32-220-071
N.Do an inspection of the outer stage 4 vane sector tongue (deflector rail) for. Refer to Figure 806.
(1)Fretting and/or wear at the location of contact with the aft cover (deflector) at anti-rotation tab:
Maximum serviceable limit:
Any amount, 0.090 inch (2.28 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 72-32-01-300-803 (72-32-01, REPAIR 003).
NOTE:
If required, TASK 72-32-01-300-803 (72-32-01, REPAIR 003) can be used to repair the inner stage 4 vane sector tongue (deflector rail) with some disassembly of the HPC Stator assembly.
Subtask 72-00-32-220-073
(2)Fretting and/or wear at the location of contact with the aft cover (deflector) not at the anti-rotation tab:
Maximum serviceable limit:
Any amount, 0.090 inch (2.28 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 case assembly.
5 . Dimensional Inspection
Refer to Figure 807.
Subtask 72-00-32-220-062
A.Do a dimensional inspection of the stage 1 actuation ring spacer assembly as follows:
(1)Dimension E (button):
Minimum serviceable limit:
Any amount 0.020 inch (0.51 mm).
Repair method:
Replace the actuation ring spacer assembly.
Subtask 72-00-32-220-063
(2)Dimension F:
Minimum serviceable limit:
0.301 inch (7.65 mm).
Maximum serviceable limit:
0.311 inch (7.90 mm).
Maximum repairable limit:
Any amount.
Repair method:
Adjust actuation ring spacer assembly to within serviceable limits. Torque spacer assembly nut to 60-70 lb in. (6.8-7.9 Nm).
Subtask 72-00-32-220-064
B.Do an dimensional inspection of the stage 2 actuating ring spacer assembly as follows:
(1)Dimension G (button):
Minimum serviceable limit:
Any amount 0.020 inch (0.51 mm).
Repair method:
Replace the actuation ring spacer assembly.
Subtask 72-00-32-220-065
(2)Dimension H:
Minimum serviceable limit:
0.386 inch (9.80 mm).
Maximum serviceable limit:
0.396 inch (10.06 mm).
Maximum repairable limit:
Any amount.
Repair method:
Adjust actuation ring spacer assembly to within serviceable limits. Torque spacer assembly nut to 60-70 lb in. (6.8-7.9 Nm).
Subtask 72-00-32-220-066
C.Do an dimensional inspection of the stage 3 actuating ring spacer assembly as follows:
(1)Dimension J (button):
Minimum serviceable limit:
Any amount 0.020 inch (0.51 mm).
Repair method:
Replace the actuation ring spacer assembly.
Subtask 72-00-32-220-067
(2)Dimension K:
Minimum serviceable limit:
0.296 inch (7.52 mm).
Maximum serviceable limit:
0.306 inch (7.77 mm).
Maximum repairable limit:
Any amount.
Repair method:
Adjust actuation ring spacer assembly to within serviceable limits. Torque spacer assembly nut to 60-70 lb in. (6.8-7.9 Nm).
Subtask 72-00-32-220-068
D.Do an dimensional inspection of the stage 4 actuating ring spacer assembly as follows:
(1)Dimension M (button):
Minimum serviceable limit:
Any amount 0.020 inch (0.51 mm).
Repair method:
Replace the actuation ring spacer assembly.
Subtask 72-00-32-220-069
(2)Dimension N:
Minimum serviceable limit:
0.293 inch (7.44 mm).
Maximum serviceable limit:
0.303 inch (7.70 mm).
Maximum repairable limit:
Any amount.
Repair method:
Adjust actuation ring spacer assembly to within serviceable limits. Torque spacer assembly nut to 60-70 lb in. (6.8-7.9 Nm).
* * * FOR ALL
Figure 806   (Sheet 1 ) Case Assembly - Vane Sector Tongue (Deflector Rail) Inspection
* * * FOR ALL
Figure 806   (Sheet 2 ) Case Assembly - Vane Sector Tongue (Deflector Rail) Inspection
* * * FOR ALL
Figure 806   (Sheet 3 ) Case Assembly - Vane Sector Tongue (Deflector Rail) Inspection
* * * FOR ALL
Figure 807   Stage 1 thru 4 Actuation Ring Spacer Assembly - Dimensional Inspection