* * * FOR ALL PIP 2
TASK 72-53-43-100-802
1 . General.
A.This procedure gives instructions to clean the interstage seal. Keep this part with the related parts by engine serial number for inspection and assembly. Refer to Figure 601 and Figure 602.
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Interstage seal (02-170 , 72-53-00) (SIN 150B3) (SB 72-0159)
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Interstage seal (02-170A , 72-53-00) (SIN 150B3) (SB 72-0159)
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Interstage seal (02-170B , 72-53-00) (SIN 150B3) (SB 72-0159)
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Interstage seal (02-170C , 72-53-00) (SIN 150B3) (SB 72-0159).
B.There are two configurations for the interstage seals. Refer to Figure 601 and Figure 602 and as follows:
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Configuration 1 interstage seals (02-170A , 72-53-00) (SIN 150B3) and (02-170B , 72-53-00) (SIN 150B3) do not have a corrosion resistant coating on the outer rim surfaces of the interstage seal.
•
Configuration 2 interstage seals (02-170 , 72-53-00) (SIN 150B3) and (02-170C , 72-53-00) (SIN 150B3) have a corrosion resistant coating on the outer rim surfaces of the interstage seal.
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.
 
Code No.
Description
 
C04-112
Abrasive, Grit, Aluminum Oxide, 500 Mesh (Abrasive Compound, 500 Mesh)
C.Referenced Procedures.
 
ATA No.
Description
 
70-00-99
S1054 - Wet Abrasive Blasting - Aluminum Oxide 500 Grit
 
70-21-05
Cleaning Method No. 5 - Wet Abrasive Blast Cleaning
 
70-21-06
Cleaning Method No. 6 Heavy-Duty Alkaline Cleaner (without Inhibited Phosphoric Acid)
 
70-21-10
Cleaning Method No. 10 Four-Step Alkaline Cleaning and Acidic Descaling (without Inhibited Phosphoric Acid)
 
70-21-20
Cleaning Method No. 20 Four-Step Alkaline Cleaning and Acidic Descaling (with Inhibited Phosphoric Acid)
 
72-53-43
Repair 001
 
72-53-43
Repair 003
D.Expendable Parts. None.
3 . General Cleaning.
Subtask 72-53-43-110-007
A.Clean the interstage seal as follows:
(1)Alternative Procedures Available. Heavy-duty alkaline clean the interstage seal. Refer to TASK 70-21-06-110-004 (CLEANING METHOD NO. 6 HEAVY-DUTY ALKALINE CLEANER (WITHOUT INHIBITED PHOSPHORIC ACID)).
Subtask 72-53-43-110-008
(1).A.Alternative Procedure. Four-step alkaline clean and acidic descale the interstage seal. Refer to TASK 70-21-10-110-008 (CLEANING METHOD NO. 10 FOUR-STEP ALKALINE CLEANING AND ACIDIC DESCALING (WITHOUT INHIBITED PHOSPHORIC ACID)).
Subtask 72-53-43-110-009
(1).B.Alternative Procedure. Four-step alkaline clean and acidic descale the interstage seal. Refer to TASK 70-21-20-110-038 (CLEANING METHOD NO. 20 FOUR-STEP ALKALINE CLEANING AND ACIDIC DESCALING (WITH INHIBITED PHOSPHORIC ACID)).
Subtask 72-53-43-120-003
(2)Alternative Procedure Available. If the initial procedure does not remove all unwanted material, wet abrasive blast clean the interstage seal. Refer to TASK 70-21-05-120-B02 (CLEANING METHOD NO. 5 - WET ABBRASIVE BLAST CLEANING (METHOD 5B)). Use C04-112   Abrasive Compound, 500 Mesh.
Subtask 72-53-43-120-004
(2).A.Alternative Procedure. If the initial procedure does not remove all unwanted material, wet abrasive blast clean the interstage seal. Refer to TASK 70-21-05-120-B02 (CLEANING METHOD NO. 5 - WET ABBRASIVE BLAST CLEANING (METHOD 5B)) and TASK 70-00-99-801-054 (S1054 - WET ABRASIVE BLASTING - ALUMINUM OXIDE 500 GRIT).
Subtask 72-53-43-350-019
B.Remove the coatings from the interstage seal before an inspection is done. Refer to TASK 72-53-43-300-801 (72-53-43, REPAIR 001) and TASK 72-53-43-300-802 (72-53-43, REPAIR 003).
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Figure 601   Interstage Seal Configuration 1 - Cleaning
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Figure 602   Interstage Seal Configuration 2 - Cleaning