* * * FOR ALL
TASK 72-32-01-100-801
1 . General.
A.This procedure gives instructions to clean the HPC stator forward case assembly (case assembly) (073A0). Keep all parts together by engine serial number for inspection and assembly. 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
 
70-00-99
Wet Abrasive Blasting - Aluminum Oxide 500 Grit
 
70-21-03
Steam Cleaning
 
70-21-05
Wet Abrasive Blast Cleaning
 
70-21-06
Heavy-Duty Alkaline Cleaner (Without Inhibited Phosphoric Acid))
 
70-21-14
Manually-Assisted Detergent Cleaning
 
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.
* * * FOR ALL
Figure 601   Case Assembly
3 . General Cleaning.
Subtask 72-32-01-160-001
A.Alternative Procedure Available. Steam clean the case assembly. Refer to TASK 70-21-03-160-001 (CLEANING METHOD 3 - STEAM CLEANING).
Subtask 72-32-01-110-001
A.A.Alternative Procedure. Manually clean the case assembly. Refer to TASK 70-21-14-110-012 (CLEANING METHOD 14 - MANUALLY-ASSISTED DETERGENT CLEANING).
Subtask 72-32-01-110-002
A.B.Alternative Procedure. Light duty aqueous clean the case assembly. Refer to TASK 70-21-22-110-042 (CLEANING METHOD 22 - LIGHT DUTY AQUEOUS CLEANING (METHOD 1)).
Subtask 72-32-01-110-003
CAUTION:
THIS PROCEDURE MAY DAMAGE THE VSV BUSHINGS AND/OR THE STAGE 1 AND 2 FLOW-PATH ABRADABLE. ONLY USE THIS PROCEDURE IF THE ABRADABLE AND THE BUSHINGS ARE REMOVED FROM THE CASE.
A.C.Alternative Procedure. Heavy-duty alkaline clean the case assembly. Refer to TASK 70-21-06-110-004 (CLEANING METHOD 6 - HEAVY-DUTY ALKALINE CLEANER (WITHOUT INHIBITED PHOSPHORIC ACID)).
Subtask 72-32-01-110-004
CAUTION:
THIS PROCEDURE MAY DAMAGE THE VSV BUSHINGS AND/OR THE STAGE 1 AND 2 FLOW-PATH ABRADABLE. ONLY USE THIS PROCEDURE IF THE ABRADABLE AND THE BUSHINGS ARE REMOVED FROM THE CASE.
A.D.Alternative Procedure. Four-step alkaline clean the case assembly. Refer to TASK 70-21-20-110-038 (CLEANING METHOD 20 - FOUR-STEP ALKALINE CLEANING AND ACIDIC DESCALING (WITH INHIBITED PHOSPHORIC ACID)).
Subtask 72-32-01-120-001
CAUTION:
THIS PROCEDURE MAY DAMAGE THE VSV BUSHINGS AND/OR THE STAGE 1 AND 2 FLOW-PATH ABRADABLE. ONLY USE THIS PROCEDURE IF THE ABRADABLE AND THE BUSHINGS ARE REMOVED FROM THE CASE.
A.E.Alternative Procedure. Wet abrasive blast clean the case assembly with 500 grit aluminum oxide. Refer to TASK 70-21-05-120-B02 (WET ABRASIVE BLAST CLEANING METHOD 5B) and TASK 70-00-99-801-054 (S1054 - WET ABRASIVE BLASTING - ALUMINUM OXIDE 500 GRIT).