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TASK 72-58-40-300-804
1 . Repair for the Mid Fan Shaft.
A.This procedure gives instructions to repair the mid fan shaft (shaft) by replacing the solid film lubricant. Refer to Figure 901.
NOTE:
Before you do this procedure, you must complete S/B 72-0114 for part numbers 2331M20G02   and 2332M81G01   .
NOTE:
Protective paint and solid film lubricant must be removed before the shaft piece part inspection.
NOTE:
For 72-58-40, Inspection 001. Refer to TASK 72-58-40-200-801 (72-58-40, INSPECTION 001).
B.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)
 
2331M20G02  
2331M20G03  
2332M81G03  
2332M81G04  
 
2332M81G05  
2440M20G05  
2440M91G05  
2440M91G06  
C.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.
 
Description
Manufacturer
 
Spray Gun (Devilbiss Luna series or Devilbiss Model MBC)
ITW Industrial Finishing Binks,
Devilbiss
195 International Blvd.
Grendale Heights, IL 60139 USA
Phone: 800 338 4448
Fax: 800 368 0117
 
Spray Gun (Iwata W series)
Anest Iwata Corporation
3176, Shinyoshida-cho, Kohoku-ku,
Yokohama, 223-8501 Japan
Phone: +81-45-591-1111
 
Spray Gun (Meiji series)
Meiji Air Compressor Mfg. Co., Ltd.
3-14,2-chome
Tagawa, Yodogawa-Ku
Osaka 532-0027, Japan
Phone: +81-6-6309-1227
FAX : +81-6-6309-0157
(3)Locally Manufactured Tools. None.
B.Consumable Materials.
 
Code No.
Description
 
C10-021
Tape, Plastic
C.Referenced Procedures.
 
ATA No.
Description
 
70-21-00
Chemical Cleaning
 
70-21-03
Cleaning Method No. 3 - Steam Cleaning
 
70-21-04
Cleaning Method No. 4 - Dry Abrasive Blast Cleaning
 
70-43-19
Application of Solid-Film Lubricant - C02-027
 
72-58-40
Inspection 001
D.Expendable Parts. None.
E.SPD Information. None.
(1)Locally Manufactured SPD. None.
F.Special Solutions. None.
G.Test Specimens. None.
3 . Dimensional Information.
Subtask 72-58-40-220-088
A.Refer to Figure 901 for specified dimensions and locations.
NOTE:
The dimensional data identified within this procedure was designed using millimeters as the base unit of measurement for dimensional values. The conversion to inches is rounded to two additional decimal digits than millimeters. For minimum dimensions, converted values are rounded up. For maximum dimensions, converted values are rounded down. To avoid conversion errors, do not reconvert from inches to millimeters.
NOTE:
Reference dimensions do not require inspection.
4 . Setup Information.
None.
5 . Procedure
Subtask 72-58-40-120-007
CAUTION:
MAKE SURE THAT YOU REPLACE THE SOLID FILM LUBRICANT IN THE SPECIFIED TIME PERIOD OR DO THE STORAGE PROCEDURES TO PREVENT CORROSION IN THE SHAFT.
A.Clean the shaft to remove all remaining solid film lubricant. Refer to TASK 70-21-04-120-001 (CLEANING METHOD NO. 4 - DRY ABRASIVE BLAST CLEANING), and as follows:
(1)Use Method 4E.
(2)Overspray is permitted.
Subtask 72-58-40-200-003
B.Do a magnetic-particle inspection of the shaft. Refer to TASK 72-58-40-200-801 (72-58-40, INSPECTION 001).
Subtask 72-58-40-100-006
C.If necessary, clean the shaft. Refer to TASK 70-21-00-110-051 (CHEMICAL CLEANING), and TASK 70-21-03-160-001 (CLEANING METHOD NO. 3 - STEAM CLEANING).
Subtask 72-58-40-200-004
D.Do a visual inspection of the shaft. Refer to TASK 72-58-40-200-801 (72-58-40, INSPECTION 001).
Subtask 72-58-40-100-003
E.If necessary, clean the shaft. Refer to TASK 70-21-00-110-051 (CHEMICAL CLEANING), and TASK 70-21-03-160-001 (CLEANING METHOD NO. 3 - STEAM CLEANING).
Subtask 72-58-40-640-002
WARNING:
REFER TO THE PRODUCT LABEL AND THE MANUFACTURER’S (MATERIAL) SAFETY DATA SHEET FOR INSTRUCTIONS ON THE HAZARDS, STORAGE, SAFE HANDLING AND PROPER USE OF THIS PRODUCT.
F.Lubricate area DA of the shaft. Refer to TASK 70-43-19-640-005 (APPLICATION OF SOLID-FILM LUBRICANT - C02-027), Figure 901, and as follows:
NOTE:
Alternative for C02-027  solid film lubricant is not permitted.
NOTE:
Spray gun (Iwata W series, Meiji series or Devilbiss Luna series) can be used as an alternative to the spray gun approved in TASK 70-43-19-640-005 (APPLICATION OF SOLID-FILM LUBRICANT - C02-027).
(1)Apply C10-021  plastic tape or an equivalent masking method to area DB and adjacent surfaces where C02-027  solid film lubricant is not necessary.
(2)Clean the shaft to prepare it for the application of C02-027  solid film lubricant. Refer to TASK 70-21-04-120-001 (CLEANING METHOD NO. 4 - DRY ABRASIVE BLAST CLEANING), and as follows:
(a)Use Method 4E.
(b)Do a visual inspection of the shaft to make sure that the shaft surface has a uniform appearance. If necessary, do Subtask 72-58-40-640-002 (paragraph 5.F.(2)) again to remove all remaining oxide and unwanted material.
(3)If necessary, replace the C10-021  plastic tape or the equivalent masking method after grit blasting.
(4)Apply C02-027  solid film lubricant to area DA, but do not include area DB.
(5)Make sure that you apply C02-027  solid film lubricant in 2 hours or less after cleaning.
(6)The C02-027  solid film lubricant average thickness must be 0.00020-0.00051 inch (0.005-0.013 mm), but the average thickness of the thread root radius must be a maximum of 0.00051 inch (0.013 mm).
(7)Full coverage is necessary and includes overlap with adjacent painted areas.
(8)Coating area must be clean and free of unwanted material during application.
(9)Let the C02-027  solid film lubricant dry before you apply the next layer or before curing.
(10)Remove the plastic tape before curing.
WARNING:
USE THERMAL GLOVES WHEN YOU MOVE OR TOUCH HOT OR COLD PARTS. HOT OR COLD PARTS CAN CAUSE INJURY.
(11)Cure the C02-027  solid film lubricant applied to the shaft in an oven or furnace.
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Figure 901   (Sheet 1 ) Mid Fan Shaft
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Figure 901   (Sheet 2 ) Mid Fan Shaft