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TASK 72-21-02-100-801
1 . General.
A.This procedure gives instructions to clean the aft fan case. Refer to Figure 601.
•
Aft fan case (01-020 , 72-21-00) (SIN 84100)
•
Aft fan case (01-021 , 72-21-00) (SIN 84100) (SB 72-0156).
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
 
70-21-02
Vapor Degreasing
 
70-21-03
Steam Cleaning
 
70-21-22
Light Duty Aqueous Cleaning
 
70-21-23
Hand-Wipe Degreasing
 
70-46-01
Masking and Cleaning of Epoxy and Polyester Matrix Thermosetting Composite Materials
D.Expendable Parts. None.
3 . General Cleaning.
Subtask 72-21-02-350-001
CAUTION:
MASK PEEK WEAR PADS BEFORE THE PROCEDURES THAT FOLLOW. IF NOT, DAMAGE TO THE WEAR PADS CAN OCCUR.
A.Alternative Procedures Available. Pressure spray clean the aft fan case. Refer to TASK 70-46-01-350-030 (MASKING AND CLEANING OF EPOXY AND POLYESTER MATRIX THERMOSETTING COMPOSITE MATERIALS), Composite Cleaning Method No. 2, Hot or Cold Water Wash Pressure Spray Cleaning.
Subtask 72-21-02-350-003
A.A.Alternative Procedure. Hand wash the aft fan case. Refer to TASK 70-46-01-350-030 (MASKING AND CLEANING OF EPOXY AND POLYESTER MATRIX THERMOSETTING COMPOSITE MATERIALS), Composite Cleaning Method No. 3, Hot or Cold Water Hand Wash Cleaning.
Subtask 72-21-02-110-003
A.B.Alternative Procedure. Hand-wipe degrease the aft fan case. Refer to TASK 70-21-23-110-053 (CLEANING METHOD 23 - HAND-WIPE DEGREASING).
WARNING:
ISOPROPYL ALCOHOL IS TOXIC AND FLAMMABLE. USE PERSONAL PROTECTION EQUIPMENT. USE IN A WELL-VENTILATED AREA.
(1)Use C04-035  isopropyl alcohol or water to clean the peek wear pads.
Subtask 72-21-02-110-004
A.C.Alternative Procedure. Vapor degrease the aft fan case. Refer to TASK 70-21-02-110-002 (CLEANING METHOD 2 - VAPOR DEGREASING).
Subtask 72-21-02-160-001
A.D.Alternative Procedure. Steam clean the aft fan case. Refer to TASK 70-21-03-160-001 (CLEANING METHOD 3 - STEAM CLEANING).
Subtask 72-21-02-110-005
A.E.Alternative Procedure. Light duty aqueous clean the aft fan case. Refer to TASK 70-21-22-110-050 (CLEANING METHOD 22 - LIGHT DUTY AQUEOUS CLEANING (METHOD 2)).
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Figure 601   Aft Fan Case