* * * FOR ALL
TASK 72-64-12-300-802
1 . Bushing Replacement.
A.This procedure gives instructions to repair the axial link (link) by removing and replacing damaged or worn bushings. Refer to Figure 901.
B.The following maximum repairable limits apply to this repair:
NOTE:
The information below gives maximum repairable limits for the applicable Inspection sections. The paragraphs are numbered the same as the manual Inspection sections.
(4)Visual Inspection.
(c)Do an inspection of the bushing for:
1Fretting on the ID of the bushing:
Maximum repairable limit:
Any amount.
2Loose bushing:
Maximum repairable limit:
Any amount.
(5)Dimensional Inspection.
(a)Do an inspection of the subsequent diameters:
3Diameter E (bushing internal diameter):
Maximum repairable limit:
Any amount.
C.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)
 
2312M31G01  
2312M31G02  
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D.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. None.
(3)Locally Manufactured Tools.
 
Description
Figure
 
Bushing Puller
902
B.Consumable Materials.
 
Code No.
Description
 
--
Liquid Nitrogen
C.Referenced Procedures.
 
ATA No.
Description
 
70-21-00
Chemical Cleaning
 
70-21-23
Cleaning Method 23 - Hand-Wipe Degreasing
 
70-24-00
Etching Procedures for Fluorescent-Penetrant Inspection
 
70-24-01
Swab Etching Procedure
 
70-32-00
Indirect Inspection Methods
 
70-32-02
Fluorescent Penetrant Inspection
 
72-64-12
Inspection 001
D.Expendable Parts. None.
E.SPD Information.
 
CSN
Description
 
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Bushing (P/N 2313M28P01   )
F.Special Solutions. None.
G.Test Specimens. None.
3 . Dimensional Information.
Subtask 72-64-12-220-018
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 re-convert from inches to millimeters.
NOTE:
Reference dimensions do not require inspection.
 
Description
Minimum In-Process Dimension
Maximum In-Process Dimension
Minimum Finish Dimension
Maximum Finish Dimension
Reference Dimension
 
Dia E1
0.7823 in. (19.87 mm)
0.7830 in. (19.89 mm)
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4 . Setup Information.
None.
5 . Procedure.
Subtask 72-64-12-930-001
A.If necessary, make the bushing puller. Refer to Figure 902.
Subtask 72-64-12-350-012
B.Remove the damaged bushing from the link diameter E1. Refer to Figure 902 and as follows:
(1)Assemble the bushing puller into the correct position.
(2)Tighten the bushing puller bolt to pull the bushing through the hole.
WARNING:
USE EYE PROTECTION WHEN YOU CUT MATERIAL OR PARTS. THE PARTICLES CAN CAUSE DAMAGE TO YOUR EYES.
CAUTION:
MAKE SURE THAT YOU DO NOT CAUSE DAMAGE TO THE LINK PARENT MATERIAL WHEN YOU MAKE A CUT ALONG THE AXIS OF THE BUSHING.
(3)If necessary, make a small cut along the axis of the bushing to help release it.
Subtask 72-64-12-110-004
C.Etch the link repair area. Refer to TASK 70-24-00-110-033 (ETCHING PROCEDURES FOR FLUORESCENT-PENETRANT INSPECTION), TASK 70-24-01-110-034 (SWAB ETCHING PROCEDURE), and as follows:
(1)Use Class C penetrant.
Subtask 72-64-12-230-002
D.Do an inspection of the link repair area. Refer to TASK 70-32-00-200-002 (INDIRECT INSPECTION METHODS), TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION), and as follows:
(1)Use Class D penetrant.
(2)Indications lower than 0.015 inch (0.4 mm) are permitted.
NOTE:
Linear indications are indications that are at least three times longer than they are wide.
(3)Discard the link if you find indications more than 0.015 inch (0.4 mm).
Subtask 72-64-12-220-019
E.Do an inspection of the link diameter E1. Refer to Subtask 72-64-12-220-018 (paragraph 3.A.), Figure 901, and as follows:
(1)Do a visual inspection of the link diameter E1 and as follows:
(a)If you find dents, nicks, scratches, or wear, discard the link.
(2)Measure the link diameter E1 at the bushing location.
(3)Discard link if the bushing hole size is more than the maximum in-process dimension.
Subtask 72-64-12-350-013
F.Install the new bushing, P/N 2313M28P01   , in the link bushing hole as follows:
Subtask 72-64-12-160-001
(1)Clean the link repair area. Refer to TASK 70-21-00-110-051 (CHEMICAL CLEANING) and TASK 70-21-23-110-053 (CLEANING METHOD NO. 23 - HAND-WIPE DEGREASING).
Subtask 72-64-12-350-014
WARNING:
USE THERMAL GLOVES WHEN YOU MOVE OR TOUCH HOT OR COLD PARTS. HOT OR COLD PARTS CAN CAUSE INJURY.
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.
CAUTION:
USE OF FURNACE IS NOT PERMITTED. IT CAN CAUSE DAMAGE TO THE LINK SPHERICAL BEARING.
(2)Freeze the bushing, P/N 2313M28P01   , at a minimum temperature of -94°F (-70°C) or in liquid nitrogen.
WARNING:
USE THERMAL GLOVES WHEN YOU MOVE OR TOUCH HOT OR COLD PARTS. HOT OR COLD PARTS CAN CAUSE INJURY.
(3)Increase the temperature of the link to a range of 212 to 248°F (100 to 120°C).
(4)Push the bushing, P/N 2313M28P01   , into the hole until the bushing shoulder is fully faced with the link shoulder.
(5)Apply a load of 5000N to stake the bushing, P/N 2313M28P01   , in the correct position and keep it until the link and the bushing, P/N 2313M28P01   , get room temperature.
Subtask 72-64-12-210-002
(6)Do a check of the correct assembly with a 0.0012 inch (0.03 mm) feeler.
Subtask 72-64-12-220-020
G.Do an inspection of the link. Refer to TASK 72-64-12-200-801 (72-64-12, INSPECTION 001).
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Figure 901   Axial Link
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Figure 902   Bushing Puller