* * * FOR ALL
TASK 72-32-71-200-801
1 . General.
A.This procedure gives instructions to do an inspection of the high pressure compressor (HPC) stator stages 1 thru 4 variable stator vane (VSV) actuating rings (actuating rings):
NOTE:
Each stage has an upper and lower half ring.
•
Stage 1 upper actuating ring (071A1)
•
Stage 1 lower actuating ring (071A6)
•
Stage 2 upper and lower actuating rings (071A2)
•
Stage 3 upper and lower actuating rings (071A3)
•
Stage 4 upper actuating ring (071A4)
•
Stage 4 lower actuating rings (071A9).
B.There are two configurations of actuating rings:
•
Configuration 1 PRE SB 72-0052 actuating rings have a thin extension arm on each end of the ring (area A).
•
Configuration 2 SB 72-0052 actuating rings do not have the thin extension arm on the end of each ring. Refer to Figure 801.
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
 
70-32-02
Fluorescent Penetrant Inspection
 
70-32-03
Spot-Fluorescent-Penetrant Inspection
 
70-42-00
Blending and Removal of High Metal Procedures
D.Expendable Parts. None.
3 . Specific Inspection Procedure.
Subtask 72-32-71-220-001
A.Do a fluorescent penetrant inspection of the actuating rings as follows:
(1)Alternative Procedure Available. Do a Class C fluorescent penetrant inspection of the actuating rings. Refer to TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION).
Subtask 72-32-71-220-002
(1).A.Alternative Procedure. If you see cracks, do a spot-fluorescent-penetrant inspection to make sure. Refer to TASK 70-32-03-230-002 (SPOT-FLUORESCENT-PENETRANT INSPECTION).
4 . Visual Inspection.
Refer to Figure 801.
Subtask 72-32-71-220-003
A.Do an inspection of all surfaces for:
(1)Cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the actuating ring.
Subtask 72-32-71-220-004
(2)Dents (does not include area A):
Maximum serviceable limit:
Any amount, 0.015 inch (0.38 mm) in depth. Six defects permitted, 0.035 inch (0.89 mm) in depth, for each segment, with a minimum separation of 2.0 inches (51 mm).
Repair method:
Replace the actuating ring.
Subtask 72-32-71-220-005
(3)Nicks or scratches (does not include area A):
Maximum serviceable limit:
Any amount, 0.005 inch (0.13 mm) in depth, after 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).
Repair method:
Blend. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Subtask 72-32-71-220-020
* * * PRE SB   72-0052
(4)Nicks or dents in area A:
Maximum serviceable limit:
Any amount, 0.060 inch (1.52 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 actuating ring.
NOTE:
SB 72-0052 does not require inspection of all surfaces for nicks or dents in area A.
* * * END PRE SB   72-0052
* * * FOR ALL
* * * PRE SB   72-0052( Actuating Rings with Thin Extension Arm )
Figure 801   (Sheet 1 ) HPC Stator Stages 1 thru 4 Actuating Rings - Inspection
* * * FOR ALL
* * * SB   72-0052( Actuating Rings without Thin Extension Arm )
Figure 801   (Sheet 2 ) HPC Stator Stages 1 thru 4 Actuating Rings - Inspection
* * * FOR ALL
Figure 801   (Sheet 3 ) HPC Stator Stages 1 thru 4 Actuating Rings - Inspection
Subtask 72-32-71-220-006
(5)Distortion (bends or twisting):
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the actuating ring.
Subtask 72-32-71-220-007
B.Do an inspection of the threaded holes for:
(1)Damaged threads:
Maximum serviceable limit:
The length of one full thread, continuous or total amount, can be missing after removal of damage, if no less than 50 percent of the lead-in thread remains.
Repair method:
Replace the actuating ring.
Subtask 72-32-71-220-008
C.Do an inspection of the stages 1 thru 4 VSV actuation ring spacer assembly for:
(1)Cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the spacer.
Subtask 72-32-71-220-021
(2)Distortion:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the spacer.
Subtask 72-32-71-220-022
(3)A spacer rub button that is loose in its metallic support:
Maximum serviceable limit:
Any amount, while the button is still retained by its support and no material is missing.
Repair method:
Replace the spacer.
Subtask 72-32-71-220-023
(4)Spacer button wear:
Maximum serviceable limit:
Minimum of 0.020 inch (0.51 mm) of button protruding from metal surface.
Repair method:
Replace the spacer.
Subtask 72-32-71-220-009
D.Deleted.
Subtask 72-32-71-220-010
E.Deleted.
Subtask 72-32-71-220-011
F.Deleted.
5 . Dimensional Inspection
Refer to Figure 801.
Subtask 72-32-71-220-012
A.Do an dimensional inspection of the stage 1 actuating 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 72-32-71-220-013
(2)Deleted.
Subtask 72-32-71-220-014
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 72-32-71-220-015
(2)Deleted.
Subtask 72-32-71-220-016
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 72-32-71-220-017
(2)Deleted.
Subtask 72-32-71-220-018
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 72-32-71-220-019
(2)Deleted.