* * * FOR ALL
TASK 72-64-12-300-801
1 . Repair for the Axial Link.
A.This procedure gives instructions to repair the axial link by replacing the damaged spherical bearing. 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.
NOTE:
For 72-64-12, Inspection 001, refer to TASK 72-64-12-200-801 (72-64-12, INSPECTION 001).
(4)Visual Inspection.
(b)Do an inspection of the spherical bearing for:
1Nicks, dents, or scratches:
Maximum repairable limit:
Any amount.
3Wear on the sphere ID and on the spherical surfaces:
Maximum repairable limit:
Any amount.
(5)Dimensional Inspection.
(a)Do an inspection of the subsequent diameters:
1Diameter C (bearing 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  
--
--
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.
 
Description
Manufacturer
 
Arbor Press
Local Purchase
 
Pyrometer
Local Purchase
 
Staking Tool 30° (HST 1061 or HST 1221)
NHBB Astro Division
155 Lexington Drive
Laconia, NH 03246
 
Staking Tool 45° (HST 1012)
NHBB Astro Division
155 Lexington Drive
Laconia, NH 03246
(3)Locally Manufactured Tools. None.
B.Consumable Materials.
 
Code No.
Description
 
C10-054
Gun, Heat (hot air gun)
 
--
Ice, Dry
 
--
Nitrogen, Liquid
C.Referenced Procedures.
 
ATA No.
Description
 
70-00-03
Machining Data
 
70-14-00
Handling of Bearings
 
70-21-00
Chemical Cleaning
 
70-21-03
Cleaning Method No. 3 - Steam Cleaning
 
70-21-23
Cleaning Method 23 - Hand-Wipe Degreasing
 
70-24-00
Etching Procedures for Fluorescent-Penetrant Inspection
 
70-32-00
Indirect Inspection Methods
 
70-32-02
Fluorescent Penetrant Inspection
 
70-42-00
Blending and Removal of High Metal Procedures
 
72-64-12
Inspection 001
D.Expendable Parts. None.
E.SPD Information.
 
CSN
Description
 
--
Spherical Bearing (ABK10VCR-3)
F.Special Solutions. None.
G.Test Specimens. None.
3 . Dimensional Information.
Subtask 72-64-12-220-013
A.Refer to Figure 901 for specified dimensionsand locations.
NOTE:
The dimensional data identified within this procedurewas designed using millimeters as the base unit of measurement fordimensional values. The conversion to inches is rounded to two additionaldecimal digits than millimeters. For minimum dimensions, convertedvalues are rounded up. For maximum dimensions, converted values arerounded down. To avoid conversion errors, do not reconvert from inchesto 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 B
--
--
1.18650 in. (30.137 mm)
1.18696 in. (30.149 mm)
--
4 . Setup Information.
Subtask 72-64-12-350-001
A.Set-up the axial linkto machine the swaged lip of the spherical bearing as follows:
NOTE:
The spherical bearing has swaged lips on the two sides.It is necessary to weaken one of the swaged lips by machining to removethe spherical bearing. It is not important which swaged lip is machined.
(1)Put the base assembly and the axiallink on the machine table. Refer to Figure 901, Figure 902, Figure 903, and as follows:
(a)Make sure that the axial link surfaceadjacent to the spherical bearing is perpendicular to the machinespindle to 0.0011 inch (0.03 mm) or less.
(b)Align the machine spindle with theinner diameter (ID) of the spherical bearing to 0.0011 inch (0.03mm) or less.
(2)Use clamps to attach the axial linkto the machine table.
Subtask 72-64-12-350-005
B.Set-up the axial linkto remove the spherical bearing as follows:
(1)Put the base assembly on the arborpress table and then put the axial link on the removal base. Referto Figure 904.
NOTE:
The removal base is assembled on the base assembly.
(2)Make sure that the axial link surfacewith the machined swaged lip is up.
Subtask 72-64-12-350-006
C.Set-up the axial linkto install the spherical bearing as follows:
(1)Put the base assembly on the arborpress table and then put the axial link on the installation base topilot the spherical bearing ID on the spherical bearing support. Referto Figure 905.
NOTE:
The installation base is assembled on the base assembly.
(2)Push the spherical bearing into theaxial link until it bottoms out in the fixture. The spherical bearingmust be flush with the axial link.
Subtask 72-64-12-350-007
D.Set-up the axial linkto stake the swage lip of the spherical bearing as follows:
(1)Put the base assembly on the arborpress table.
(2)Put the axial link on the staking baseto pilot the spherical bearing ID on the staking tool. Refer to Figure 906.
NOTE:
The staking base is assembled on the base assembly.
(3)Move the axial link in the oppositedirection to stake the other side of the spherical bearing. Referto Figure 907.
5 . Procedure.
Subtask 72-64-12-350-002
A.Remove the sphericalbearing from the axial link as follows:
Subtask 72-64-12-320-001
CAUTION:
MAKE SURE THAT THE CUTTING TOOL DOES NOT TOUCH THEAXIAL LINK PARENT MATERIAL DURING THE MACHINING PROCEDURE. IF THECUTTING TOOL TOUCHES THE AXIAL LINK PARENT MATERIAL, DAMAGE TO THEAXIAL LINK CAN OCCUR, AND YOU COULD NOT REPAIR THE AXIAL LINK WITHTHIS PROCEDURE.
(1)Machine the axial link. Refer to TASK 70-00-03-800-004(MACHINING DATA), Figure 903, and as follows:
(a)Set-up the axial link to machine theswaged lip of the spherical bearing. Refer to Subtask 72-64-12-350-001 (paragraph 4.A.),Setup Information.
(b)Machine the axial link to weaken theswaged lip of the spherical bearing.
Subtask 72-64-12-350-008
CAUTION:
REMOVE ALL THE STAKING SWAGED LIP PIECES BEFORE YOUPUSH THE SPHERICAL BEARING OUT. THESE CAN CAUSE DAMAGE TO THE AXIALLINK BORE.
(2)Remove the spherical bearing as follows:
(a)Set-up the axial link to remove thespherical bearing. Refer to Subtask 72-64-12-350-005 (paragraph 4.B.),Setup Information.
(b)Put the spherical bearing pusher toolon the axial link and align it on the top of the spherical bearing.Refer to Figure 904.
(c)Push on the side where you removedthe staking swaged lip of the spherical bearing.
(d)Apply pressure to the top of the pusherwith the ram of the arbor press to remove the spherical bearing.
Subtask 72-64-12-220-016
B.Do a dimensional inspectionof the center bore of the axial link. Refer to Subtask 72-64-12-220-013 (paragraph 3.A.), Figure 902, and do as follows:
Subtask 72-64-12-350-009
(1)If necessary, blend the axial linkto remove all the high metal. Refer to TASK 70-42-00-350-002(BLENDING AND REMOVAL OF HIGH METAL PROCEDURES).
Subtask 72-64-12-110-002
C.Etch the axial linkrepair area. Refer to TASK 70-24-00-110-033 (ETCHING PROCEDURESFOR FLUORESCENT-PENETRANT INSPECTION), TASK 70-24-01-110-034(SWAB ETCHING PROCEDURE), and as follows:
(1)Use Class C etchant.
Subtask 72-64-12-200-001
D.Do an inspection ofthe axial 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 A penetrant.
(2)Linear indications are not permitted.
NOTE:
Linear indications are indications that are at least fourtimes longer than they are wide.
(3)Indications 0.0299 inch (0.76 mm) orless are permitted.
(4)Indications 0.0304-0.0598 inch (0.77-1.52mm) are permitted if there is a minimum space of 0.500 inch (12.7mm) between them.
Subtask 72-64-12-100-001
E.Clean the axial link.Refer to TASK 70-21-00-110-051 (CHEMICAL CLEANING) and TASK 70-21-03-160-001(CLEANING METHOD NO. 3 - STEAM CLEANING).
Subtask 72-64-12-110-003
F.Clean the new sphericalbearing, ABK10VCR-3. Refer to TASK 70-21-00-110-051 (CHEMICAL CLEANING) and TASK 70-21-23-110-053(CLEANING METHOD 23 - HAND-WIPE DEGREASING).
Subtask 72-64-12-300-001
G.Install the new sphericalbearing, ABK10VCR-3, in the axial link as follows:
(1)Set-up the axial link to install thespherical bearing. Refer to Subtask 72-64-12-350-006 (paragraph 4.C.),Setup Information and as follows:
WARNING:
USE THERMAL GLOVES WHEN YOU MOVE OR TOUCH HOT OR COLDPARTS. HOT OR COLD PARTS CAN CAUSE INJURY.
(2)Increase the temperature of the axial link area where you willinstall the spherical bearing with a C10-054  hot air gun to a temperature range of 203to 212°F (95 to 100°C). Use a pyrometer to do a check of thetemperature.
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.
(3)Freeze the spherical bearing in dry ice or liquid nitrogen.Refer to TASK 70-14-00-620-003 (HANDLING OF BEARINGS).
Subtask 72-64-12-350-003
CAUTION:
DO NOT APPLY PRESSURE ON THE BALL OF THE SPHERICALBEARING. YOU CAN CAUSE DAMAGE TO THE SPHERICAL BEARING.
CAUTION:
DO NOT APPLY MORE THAN 1124 LB (5000 N) OF PRESSURETO THE SPHERICAL BEARING. YOU CAN CAUSE DAMAGE TO THE SPHERICAL BEARING.
(4)Install the spherical bearing into the axial link bore. Referto Figure 905 andas follows:
(a)Install the spherical bearing as soonas possible after the heating and freezing operations.
(b)Use the bearing pusher.
(c)Point the entry slot as shown in Figure 905.
(d)Apply a maximum load of 1124 lb (5000N) to the outer ring of the spherical bearing.
Subtask 72-64-12-350-004
H.Stake the new sphericalbearing, ABK10VCR-3, to the axial link. Refer to Figure 906 and as follows:
(1)Set-up the axial link to stake theswage lip of the spherical bearing. Refer to Subtask 72-64-12-350-007 (paragraph 4.D.),Setup Information and as follows:
(a)Make sure that the spherical bearinginstalled in the axial link bore agrees with the symmetry tolerancewhen you stake the spherical bearing on the axial link chamfer bore.Refer to Figure 902.
Subtask 72-64-12-350-010
(2)For the first phase staking, referto Figure 906, andas follows:
(a)Use the applicable staking tool tostake the spherical bearing. Refer to paragraph 2.A.(2), StandardTools and Equipment and as follows:
1Use the circular staking tool (withthe internal angle not higher than 30 degrees and the external anglenot higher than 45 degrees) to stake the groove of the spherical bearing.
(b)Gradually apply a load to a maximumof 21018 lb (93500 N) on the end of the spherical bearing housing.
(c)Make a retention lip in the sphericalbearing race until it touches the axial link bore chamfer.
(d)Repeat lip swaging operation each 90°.
Subtask 72-64-12-350-011
(3)For the second phase staking, referto Figure 907, andas follows:
(a)Use the applicable staking tool tostake the spherical bearing. Refer to paragraph 2.A.(2), StandardTools and Equipment and as follows:
1Use the circular staking tool (withthe internal angle not higher than 30 degrees and the external anglenot higher than 45 degrees) to stake the groove of the spherical bearing.
(b)Gradually apply a load to a maximumof 21018 lb (93500 N) on the end of the spherical bearing housing.
(c)Make a retention lip in the sphericalbearing race until it touches the axial link bore chamfer.
(d)Repeat lip swaging operation each 90°.
Subtask 72-64-12-220-014
I.Do a visual inspectionin the swaged area of the spherical bearing as follows:
(1)Linear indications are not permitted.
NOTE:
Linear indications are indications that are at least fourtimes longer than they are wide.
Subtask 72-64-12-220-015
J.Do an inspection ofthe new spherical bearing installation, ABK10VCR-3, in the axial linkas follows:
(1)Do an inspection of the ball for freemovement as follows:
(a)Use finger pressure to move the ball.
Subtask 72-64-12-210-001
(2)Do a check of the radial play as follows:
(a)Make sure that the radial play thatis below a load of 5.5 lb (24.5 N) between the spherical bearing balland the ball spherical bearing seat is 0.00099-0.0019 inch (0.025-0.050mm).
Subtask 72-64-12-300-002
(3)If the movement is not free and theradial clearance does not agree with the limits specified in Subtask 72-64-12-210-001(paragraph 5.J.(2)(a)), remove the spherical bearing andinstall a new spherical bearing as follows:
(a)Do Subtask 72-64-12-350-002 (paragraph 5.A.) thru Subtask 72-64-12-220-015(paragraph 5.J.) again.
(b)Use less staking force in the installation.
Subtask 72-64-12-220-017
NOTE:
(HES) The datum of symmetry must be the centre line of the part. A PCR will be issued to fix the position of the datum symbol -A-. Refer to Case #02158153.
(4)Do an inspection for symmetry. Referto Figure 902.
* * * FOR ALL
Figure 901   (Sheet 1 ) Axial Link
* * * FOR ALL
Figure 901   (Sheet 2 ) Axial Link
* * * FOR ALL
Figure 902   Spherical Bearing Location
* * * FOR ALL
Figure 903   Swage Lip of the Spherical Bearing - Machining
* * * FOR ALL
Figure 904   Spherical Bearing Removal
* * * FOR ALL
Figure 905   Spherical Bearing Installation
* * * FOR ALL
Figure 906   Spherical Bearing Staking - First Phase
* * * FOR ALL
Figure 907   Spherical Bearing Staking - Second Phase