* * * FOR ALL
TASK 72-31-44-300-802
1.Repair for the High Pressure Compressor Rotor Stage 5 Blisk.
A.This procedure gives instructions to repair the high pressure compressor rotor (HPCR) stage 5 blisk (blisk) by blending. 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.
NOTE:
For 72-31-44, Inspection 001. Refer to TASK 72-31-44-200-801 (72-31-44, INSPECTION 001) .
(4)Visual Inspection.
(f)Do an inspection of the flowpath surface of the blisk for:
1Nicks, dents, pits, and scratches:
Maximum repairable limit:
Any amount to a maximum depth of 0.005 inch (0.12 mm), any length, if they are in the repair areas in Figure 901.
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)
 
2357M35P01 
--
--
--
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. None.
(3)Locally Manufactured Tools. None.
B.Consumable Materials.
 
Code No.
Description
 
C04-271
Shot, Peening, Cast Steel (cast steel shot)
 
C10-012
Tape, Masking, High Temperature (masking tape)
 
C10-187
Abrasive Cloth, Aluminum Oxide Super-flexible
 
C10-205
Almen Test Strips
C.Referenced Procedures.
 
ATA No.
Description
 
70-24-00
Etching Procedures for Fluorescent-Penetrant Inspection
 
70-24-01
Swab Etching Procedure
 
70-32-00
Indirect Inspection Methods
 
70-32-02
Fluorescent Penetrant Inspection
 
70-42-00
Blending and Removal of High Metal Procedures
 
70-47-01
Shotpeening
 
72-31-44
Cleaning 001
 
72-31-44
Inspection 001
D.Expendable Parts. None.
E.SPD Information. None.
F.Special Solutions. None.
G.Test Specimens. None.
3 . Dimensional Information.
Subtask 72-31-44-220-056
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 reconvert from millimeters to inches.
4 . Setup Information.
None.
5 . Procedure.
Subtask 72-31-44-100-002
A.Clean the blisk. Refer to TASK 72-31-44-100-801 (72-31-44, CLEANING 001).
Subtask 72-31-44-200-001
B.Do an inspection of the blisk. Refer to TASK 72-31-44-200-801 (72-31-44, INSPECTION 001).
Subtask 72-31-44-350-003
C.Blend the blisk damaged area. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES), Figure 901, and as follows:
CAUTION:
DO NOT BLEND INTO THE AIRFOIL ROOT RADII. DAMAGE TO THE BLISK CAN OCCUR.
(1)Blend the minimum quantity of parent material to a maximum depth of 0.005 inch (0.12 mm) to remove the damage fully. Use a 10:1 width-to-depth blend ratio.
(2)If you cannot remove the damage at the maximum repairable limit, or if the blends extended beyond the repairable area, you cannot repair the blisk with this procedure.
Subtask 72-31-44-110-009
D.Etch the blisk repaired area. Refer to TASK 70-24-00-110-033 (ETCHING PROCEDURES FOR FLUORESCENT-PENETRANT INSPECTION), TASK 70-24-01-110-034 (SWAB ETCHING PROCEDURE), and as follows:
(1)Use Class C etchant.
Subtask 72-31-44-200-002
E.Do an inspection of the blisk repaired area. Refer to TASK 70-32-00-200-002 (INDIRECT INSPECTION METHODS), TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION), and as follows:
(1)Use Class G penetrant.
(2)Refer to TASK 72-31-44-200-801 (72-31-44, INSPECTION 001), for acceptability limits.
Subtask 72-31-44-380-050
F.Peen the blisk repaired area. Refer to TASK 70-47-01-380-016 (SHOTPEENING), Figure 902, and as follows:
(1)Apply C10-012  masking tape to the areas that you will not peen.
(2)Use Type N C10-205  almen test strips.
(3)Use S110 C04-271  cast steel shot.
(4)Peen area to an intensity of 0.006N-0.012N.
(5)Intensity verification is necessary in the blisk repaired area. Use a scrap part or simulative fixture.
(6)A minimum coverage of 125 percent is necessary.
(7)Overspray is not permitted.
(8)Remove the plastic tape from the blisk.
(9)Remove the blisk from the holding fixture.
Subtask 72-31-44-350-004
WARNING:
USE EYE PROTECTION WHEN YOU POLISH MATERIAL OR PARTS. THE PARTICLES CAN CAUSE AN INJURY TO YOUR EYES. USE IN A WELL-VENTILATED AREA.
G.Polish the blisk blended areas as follows:
(1)Use a C10-187  abrasive cloth or equivalent with grit size 150 or higher.
(2)The surface finish must be 32 microinches (0.8 micrometer) or better.
Subtask 72-31-44-100-003
H.Clean the blisk. Refer to TASK 72-31-44-100-801 (72-31-44, CLEANING 001).
Subtask 72-31-44-200-003
I.Do a final inspection of the blisk repaired areas. Refer to TASK 72-31-44-200-801 (72-31-44, INSPECTION 001).
* * * FOR ALL
Figure 901   (Sheet 1) High Pressure Compressor Rotor Stage 5 Blisk
* * * FOR ALL
Figure 901   (Sheet 2) High Pressure Compressor Rotor Stage 5 Blisk
* * * FOR ALL
Figure 901   (Sheet 3) High Pressure Compressor Rotor Stage 5 Blisk
* * * FOR ALL
Figure 901   (Sheet 4) High Pressure Compressor Rotor Stage 5 Blisk
* * * FOR ALL
Figure 902   Masking Information