* * * FOR ALL
TASK 72-30-01-300-801
1 . Threaded Insert Replacement.
A.This procedure gives instructions to repair the high pressure compressor (HPC) stator extension case (extension case) by replacing the damaged threaded inserts. Refer to Figure 901.
B.The following maximum repairable limits apply to this repair:
NOTE:
The information below gives maximum repairable limits for the applicable Inspection sections. The paragraphs are numbered the same as the manual Inspection sections.
(4)Visual Inspection.
(b)Do an inspection of the HPC stator extension case (extension case) (080AL) as follows. Refer to Figure 801.
2Damaged threads on the mounting pads:
Maximum repairable limit:
Any amount.
NOTE:
For 72-00-30, Inspection 001, refer to TASK 72-00-30-200-801 (72-00-30, INSPECTION 001) .
(e)Do an inspection of the insert for:
1Loss of self-locking quality (0.250-28UNJF):
Maximum repairable limit:
Any amount.
2Looseness or missing:
Maximum repairable limit:
Any amount.
NOTE:
For 72-30-01, Inspection 001, refer to TASK 72-30-01-200-801 (72-30-01, INSPECTION 001) .
(ag)Do an inspection of the HPC stator extension case (extension case) (080AL) as follows. Refer to Figure 811.
2Damaged threads on the mounting pads:
Maximum repairable limit:
Any amount.
NOTE:
For 72-00-02, Inspection 001, refer to TASK 72-00-02-200-801 (72-00-02, INSPECTION 001) .
C.The subsequent table gives a list of the part numbers that are applicable to this repair. All part numbers are applicable to all paragraphs unless specified differently.
 
Part Number(s)
 
2302M69G03  
2302M69G06  
2644M02G01  
--
D.Proprietary/Complex Process Statement.
(1)None.
2 . Tools, Equipment, and Materials.
NOTE:
Repair sources can use equivalent alternatives for tools, equipment, and consumable materials however, the repair source must demonstrate and document equivalency.
A.Tools and Equipment.
(1)Special Tools. None.
(2)Standard Tools and Equipment.
 
Description
Manufacturer
 
Drill
Local Purchase
 
Drill Stop Collar Set (drill stop collar)
Local Purchase
 
Hex Head Drive Wrench (allen key)
Local Purchase
 
Pointed Punch
Local Purchase
 
0.2880 inch (+0, -0.0002 tolerance) NO-GO pin gauge
Local Purchase
(3)Locally Manufactured Tools. None.
B.Consumable Materials. None.
C.Referenced Procedures.
 
ATA No.
Description
 
70-48-22
Replacement of Ring-Lock Insert
 
72-00-02
Inspection 001
 
72-00-30
Inspection 001
 
72-30-01
Cleaning 001
 
72-30-01
Inspection 001
 
--
AS3507, Installation and Removal of Thin Wall, Self-Locking, Short and Long Length Inserts
D.Expendable Parts. None.
E.SPD Information.
 
CSN
Description
 
--
Insert, Screw (1693M83P04) (insert)
 
--
Ring, Locking (1689M74P02)
F.Special Solutions. None.
G.Test Specimens. None.
3 . Dimensional Information.
Subtask 72-30-01-220-057
A.Refer to Figure 901 for specified dimensions and locations.
NOTE:
The dimensional data identified within this procedure was designed using inches as the base unit of measurement for dimensional values. The conversion to millimeters is rounded to one less decimal digit than inches. For minimum dimensions, converted values are rounded up. For maximum dimensions, converted values are rounded down. To avoid conversion errors, do not re-convert from millimeters to inches.
NOTE:
Reference dimensions do not require inspection.
4 . Setup Information.
None.
5 . Procedure.
Subtask 72-30-01-100-001
A.If necessary, clean the HPC extension case. Refer to TASK 72-30-01-100-801 (72-30-01, CLEANING 001).
Subtask 72-30-01-350-001
B.Remove the damaged insert from the HPC extension case. Refer to TASK 70-48-22-350-801 (REPLACEMENT OF RING-LOCK INSERT), Figure 902, and do as follows:
NOTE:
Insert has a 0.250 inch (6.35 mm) diameter internal thread.
(1)Set-up the drill as follows:
(a)Use a 0.2785 inch (7.074 mm) diameter drill.
(b)Install a drill stop collar on the drill bit to a drill depth of 0.080-0.090 inch (2.03-2.28 mm).
(2)Align the drill with the center line of the damaged insert.
Subtask 72-30-01-320-001
WARNING:
METAL PARTICLES FROM MACHINING CAN CAUSE DAMAGE, INJURY, OR IRRITATION TO YOU. USE PERSONAL PROTECTION EQUIPMENT.
CAUTION:
DO NOT DRILL INTO THE EXTENSION CASE WALL. DAMAGE TO THE EXTENSION CASE CAN OCCUR.
CAUTION:
MAKE SURE THAT THE EXTENSION CASE DOES NOT MOVE DURING THE DRILLING PROCEDURE. DAMAGE TO THE EXTENSION CASE CAN OCCUR.
(3)Drill into the threaded insert to a depth of 0.080-0.090 inch (2.03-2.28 mm).
Subtask 72-30-01-350-003
WARNING:
BE CAREFUL WHEN YOU USE SHARP OR POINTED TOOLS. THESE TOOLS CAN CAUSE AN INJURY TO YOU.
(4)Use a pointed punch to remove the locking ring and as follows:
(a)Discard the locking ring that you removed.
(5)Use an allen key to remove the damaged threaded insert.
NOTE:
The damaged threaded insert cannot be used again and can be discarded.
(6)Remove all unwanted material from the extension case repair area.
Subtask 72-30-01-220-078
(7)Do a visual inspection of the threads and counterbore of the extension case repair area. Refer to Figure 903 and as follows:
(a)If necessary, remove the high metal from the threaded hole with a tap to chase the threads.
(b)Use clean compressed air to remove the loose metal chips from the tapped hole.
(c)If more than the first thread remains damaged, this part cannot be repaired by this procedure.
Subtask 72-30-01-220-082
(8)Do an inspection of the threads of the extension case repair area and as follows:
(a)Conduct No-Go pin gauge check of the threaded holes:
Maximum serviceable limit:
0.2880 inch pin gauge must not extend past the first thread.
Maximum repairable limit:
Not repairable.
Repair method:
Replace the case.
Subtask 72-30-01-350-004
C.Install the new insert, 1693M83P04   , and the new locking ring, 1689M74P02   , in the HPC extension case. Refer to AS3507, Installation and Removal of Thin Wall, Self-Locking, Short and Long Length Inserts, Figure 903, and as follows:
(1)Use the same size insert as the damaged insert that you removed.
(2)Install the new threaded insert into the threaded hole of the extension case as follows:
(a)Turn the new insert until the top face of the insert is 0.010-0.030 inch (0.26-0.76 mm) below the location face surface of the case.
Subtask 72-30-01-350-005
(3)Install the new locking ring on the insert and into the oval shaped hole as follows:
(a)Use locking ring, 1689M74P02   .
(b)The word top on the lock ring must face outward from the case.
(4)Swage the new insert into the locking ring.
Subtask 72-30-01-220-058
D.Do an inspection of the new insert and new locking ring installation, and as follows:
(1)Use 10X magnification.
(2)Make sure that the insert serrations are swaged into the serrations of the locking ring.
(3)Make sure that the locking ring and insert are below the surface of the extension case.
Subtask 72-30-01-350-006
E.Remove all unwanted material from the extension case repair area.
* * * FOR ALL
Figure 901   (Sheet 1 ) High Pressure Compressor Stator Extension Case
* * * FOR ALL
Figure 901   (Sheet 2 ) High Pressure Compressor Stator Extension Case
* * * FOR ALL
Figure 902   Threaded Insert Removal
* * * FOR ALL
Figure 903   (Sheet 1 ) SPD Insert Installation
* * * FOR ALL
Figure 903   (Sheet 2 ) SPD Insert Installation