* * * FOR ALL
TASK 72-32-06-100-801
1 . General.
A.This procedure gives instructions to clean the high pressure compressor (HPC) stator stage 4 interstage seals (interstage seals) (076A4, 076AD). Keep all parts together by engine serial number. Refer to Figure 601.
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
 
70-21-01
Solvent Degreasing
 
70-21-02
Vapor Degreasing
 
70-21-03
Steam Cleaning
 
70-21-06
Heavy-Duty Alkaline Cleaner (Without Inhibited Phosphoric Acid)
 
70-21-20
Four-Step Alkaline Cleaning And Acidic Descaling (With Inhibited Phosphoric Acid)
 
70-21-22
Light Duty Aqueous Cleaning
D.Expendable Parts. None.
3 . General Cleaning.
Subtask 72-32-06-110-001
A.Alternative Procedures Available. Solvent clean the interstage seals. Refer to TASK 70-21-01-110-001 (CLEANING METHOD 1 - SOLVENT DEGREASING).
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Figure 601   Interstage Seals
Subtask 72-32-06-110-002
A.A.Alternative Procedure. Vapor clean the interstage seals. Refer to TASK 70-21-02-110-002 (CLEANING METHOD 2 - VAPOR DEGREASING).
Subtask 72-32-06-160-001
A.B.Alternative Procedure. Steam clean the interstage seals. Refer to TASK 70-21-03-160-001 (CLEANING METHOD 3 - STEAM CLEANING).
Subtask 72-32-06-110-003
A.C.Alternative Procedure. Heavy-duty alkaline clean the interstage seals. Refer to TASK 70-21-06-110-004 (CLEANING METHOD 6 - HEAVY-DUTY ALKALINE CLEANER (WITHOUT INHIBITED PHOSPHORIC ACID)).
Subtask 72-32-06-110-004
A.D.Alternative Procedure. Four-step alkaline clean and acidic descale the interstage seals. Refer to TASK 70-21-20-110-038 (CLEANING METHOD 20 - FOUR-STEP ALKALINE CLEANING AND ACIDIC DESCALING (WITH INHIBITED PHOSPHORIC ACID)).
Subtask 72-32-06-110-005
A.E.Alternative Procedure. Light duty aqueous clean the interstage seals. Refer to TASK 70-21-22-110-042 (CLEANING METHOD 22 - LIGHT DUTY AQUEOUS CLEANING (METHOD 1)).
Subtask 72-32-06-110-006
A.F.Alternative Procedure. Light duty aqueous clean the interstage seals. Refer to TASK 70-21-22-110-050 (CLEANING METHOD 22 - LIGHT DUTY AQUEOUS CLEANING (METHOD 2)).