Thermal Spray Procedures for OHT Front Duo-Cone Seal Retainer {0679, 3259, 4201, 4205} Caterpillar

Thermal Spray Procedures for OHT Front Duo-Cone Seal Retainer {0679, 3259, 4201, 4205}

Usage:

769C 01X

Off-Highway Truck/Tractor: All

Introduction

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Table 1
Revision	Summary of Changes in SEBF9290
05	Verified Effectivity Revised Boilerplate, Date, Inserted Table 2, Revised All Illustrations, Formatted Tables.
04	Added 1 part number.
03	Changed supplier name from Sulzer Metco to Oerlikon Metco.
02	Added two part numbers.
01	Added confidentiality statement, Think Safety graphic, and updated Praxair TAFA arc spray system.

© 2019 Caterpillar All Rights Reserved. This guideline is for the use of Cat dealers only. Unauthorized use of this document or the proprietary processes therein without permission may be violation of intellectual property law.

Information contained in this document is considered Caterpillar: Confidential Yellow.

This Reuse and Salvage Guideline contains the necessary information to allow a dealer to establish a parts reusability program. Reuse and salvage information enables Caterpillar dealers and customers to benefit from cost reductions. Every effort has been made to provide the most current information that is known to Caterpillar. Continuing improvement and advancement of product design might have caused changes to your product which are not included in this publication. This Reuse and Salvage Guideline must be used with the latest technical information that is available from Caterpillar.

For technical questions when using this document, work with your Dealer Technical Communicator (TC).

To report suspected errors, inaccuracies, or suggestions regarding the document, submit a form for feedback in the Service Information System (SIS Web) interface.

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Table 2
References
Media Number	Publication Type & Title
Channel1	"Why Reuse and Salvage Parts"
Channel1	https://channel1.mediaspace.kaltura.com/media/Why+Reuse+and+Salvage+Parts/0_ae9rhu2z
PERF1017	Reuse and Salvage Guidelines "Fundamentals of High Velocity Oxygen Fuel (HVOF) Spray for Reconditioning Components"
SEBF8439	Reuse and Salvage Guidelines "Procedure to Salvage Reaction Hubs, Retainers, and Seal Retainers Used in Wheel Groups of Off-Highway Trucks"
SEBF9236	Reuse and Salvage Guidelines "Fundamentals of High Velocity Oxygen Fuel (HVOF) Spray for Reconditioning Components"
SEBF9238	Reuse and Salvage Guidelines "Fundamentals of Arc Spray for Reconditioning Components"
SEBF9240	Reuse and Salvage Guidelines "Fundamentals of Flame Spray for Reconditioning Components"

Canceled Part Numbers and Replaced Part Numbers

This document may include canceled part numbers and replaced part numbers. Use the Numerical Part Record (NPR) on the Service Information System Website (SIS web) for information about canceled part numbers and replaced part numbers. NPR will provide the current part numbers for replaced parts.

Important Safety Information

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Illustration 1	g02139237

Work safely. Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs. A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools to perform these functions properly. Safety precautions and warnings are provided in this instruction and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons. Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. If a tool, a procedure, a work method, or operating technique that is not recommended by Caterpillar is used, ensure that it is safe for you and for other people to use. Ensure that the product will not be damaged or the product will not be made unsafe by the operation, lubrication, maintenance, or the repair procedures that are used.

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Improper operation, lubrication, maintenance or repair of this product can be dangerous and could result in injury or death.

Do not operate or perform any lubrication, maintenance or repair on this product, until you have read and understood the operation, lubrication, maintenance and repair information.

Safety precautions and warnings are provided in this manual and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons.

The hazards are identified by the “Safety Alert Symbol” which is followed by a “Signal Word” such as “DANGER”, “WARNING” or “CAUTION”. Refer to Illustration 2 for an example of a “WARNING” Safety Alert Symbol.

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Illustration 2	g00008666

This safety alert symbol means:

Pay Attention!

Become Alert!

Your safety is Involved.

The message that appears under the safety alert symbol explains the hazard.

Operations that may cause product damage are identified by "NOTICE" labels on the product and in this publication.

Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The safety information in this document and the safety information on the machine are not all inclusive. Determine that the tools, procedures, work methods, and operating techniques are safe. Determine that the operation, lubrication, maintenance, and repair procedures will not damage the machine. Also, determine that the operation, lubrication, maintenance, and repair procedures will not make the machine unsafe.

The information, the specifications, and the illustrations that exist in this guideline are based on information which was available at the time of publication. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete, most current information before you start any job. Caterpillar dealers can supply the most current information.

Part Description

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Table 3
Base Metal	Steel Casting
Hardness	45 Rc

Arc Spray Equipment and Procedure

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Table 4
Arc Spray Equipment
Maximum Surface Texture Finish	3.5 µm (137.80 µinch)
Reason for Spraying	Wear or grooving
Mating Part Contact Area & Material	Bearing
Arc Spray Equipment Type	SmartArc by Oerlikon Metco,TAFA 8830 MHU, or TAFA 8835 MHU
Wire	TAFA 90MXC Wire Top Coat, TAFA 75B Bond Coat
Finish Thickness	As required
Spray Angle	90°
Substrate Pre-Heat Temperature	66° C (150° F) Do not direct arc on area to be sprayed
Substrate Temperature During Spraying Not to Exceed	148° C (300° F)
Auxiliary Cooling	Filtered shop air
Rotation/Traverse Device	Lathe
Rotation Speed	92.0 SMPM (300.00 SFPM)
Surface Preparation Method	Undercut and Grit blast
Equipment Required	Turn (Horizontal or Vertical) Lathe
Recommended Cutting Tool	ISCAR DNMG 432TFIC507
Blast Media Recommendation	Pressure Type Only (Aluminum Oxide Grit)
Finishing Equipment Type	Horizontal or Vertical Lathe
Remarks	Reference Service Guide, SEBF8439, "Procedure to Salvage Reaction Hubs, Retainers, and Seal Retainers Used in Wheel Groups of Off-Highway Trucks"

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Table 5
Arc Spray		Procedure
Clean Part		Degrease in hot Aluminum safe cleaner
Undercut		If desired
Chamfer		1.0 ± 0.5 mm (0.04 ± 0.02 inch) x 45°
Remove Oxide		Use fiber flap brush or Clean/strip disc
Clean Spray Area		Commercial degreaser
Mask for Grit Blaster		Duct tape
Grit Blast Equipment		Pressure type only
Grit Type and Size		20 mesh aluminum oxide
Blast Air Pressure		690 kPa (100.0 psi)
Blast Nozzle to Work Distance		51 mm (2.0 inch) 150 mm (6.0 inch)
Remove Blast Mask		Remove mask material, make sure that surface is clean
Mask for Metal Spray		Antibond or Blue Layout Dye
Metal Spray Equipment Type		Smart Arc by Oerlikon Metco	TAFA
	Consumable (Bondcoat)	TAFA 75B	TAFA 75B
	Clamp Pressure	275 kPa (40 psi)
	Air Jets/Pressure	415 kPa (60 psi)	415 kPa (60 psi)
	Arc Load Volts	30V	30V
	Amps	125 Amps	150 Amps
	Gun to Work Distance (Standoff)	128 mm (5.0 inch)	128 mm (5.0 inch)
	Spray Rate/Bond Pass	0.038 mm (0.0015 inch)/pass	0.038 mm (0.0015 inch)/pass
	Consumable (Topcoat)	TAFA 90MXC	TAFA 90MXC
	Clamp Pressure	275 kPa (40 psi)
	Air Jets/Pressure	415 kPa (60 psi)	415 kPa (60 psi)
	Arc Load Volts	32V	32V
	Amps	125 Amps	150 Amps
	Gun to Work Distance (Standoff)	102 mm (4.0 inch)	102 mm (4.0 inch)
	Spray Rate/Build Up	0.038 mm (0.0015 inch)/pass	0.038 mm (0.0015 inch)/pass
	Rotation Speed of Part (RPM)	RPM varies depending on diameter
	Rotation Speed of Part	92.0 SMPM (300.00 SFPM)
	Traverse Rate of Gun	11.0 SMPM (40.00 SFPM)
Gun Fixturing Method		Machine mount or hand held
Finishing Equipment		Lathe
Part/Cutter Rotation Roughing		12.0 SMPM (40.00 SFPM)
Part/Cutter Rotation Finishing		15.0 SMPM (50.00 SFPM)
Coolant		Oil base synthetic - 40:1 ratio
Traverse Speed		0.30 mm (0.012 inch)
Depth of Rough Cut		0.51 mm (0.020 inch)
Depth of Finish Cut		0.25 mm (0.010 inch)

Specifications

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Illustration 3	g06407678

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Illustration 4	g06408333
For Model 769, Part Number 9M-1669 OHT Front Duo-Cone Seal Retainer

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Table 6
OHT Front Duo-Cone Seal Retainer
Part No.	Dimension A	Dimension B	Dimension C
5T-3019	60.32 ± 0.13 mm (2.375 ± 0.005 inch)	20.57 ± 0.25 mm (0.810 ± 0.010 inch)	9.53 ± 0.13 mm (0.375 ± 0.005 inch)
5T-6501	38.10 ± 0.50 mm (1.500 ± 0.020 inch)	2.54 ± 0.25 mm (0.100 ± 0.010 inch)	2.66 ± 0.25 mm (0.105 ± 0.010 inch)
6D-0208	50.80 ± 0.13 mm (2.000 ± 0.005 inch)	7.10 ± 0.25 mm (0.280 ± 0.010 inch)	15.09 ± 0.13 mm (0.594 ± 0.005 inch)
6G-6532	44.00 ± 0.50 mm (1.732 ± 0.020 inch)	N/A	10.38 ± 0.25 mm (0.409 ± 0.010 inch)
7D-2829	60.32 ± 0.13 mm (2.375 ± 0.005 inch)	20.57 ± 0.25 mm (0.810 ± 0.010 inch)	9.53 ± 0.13 mm (0.375 ± 0.005 inch)
8X-2257	38.10 ± 0.50 mm (1.500 ± 0.020 inch)	6.97 ± 0.25 mm (0.274 ± 0.010 inch)	3.88 ± 0.25 mm (0.153 ± 0.010 inch)
9D-1643	66.68 ± 0.13 mm (2.625 ± 0.005 inch)	N/A	23.90 ± 0.13 mm (0.941 ± 0.005 inch)
9M-1669	32.51 ± 0.13 mm (1.280 ± 0.005 inch)	15.75 ± 0.25 mm (0.620 ± 0.010 inch)	13.46 ± 0.25 mm (0.530 ± 0.010 inch)
111-1383	50.80 ± 0.13 mm (2.000 ± 0.005 inch)	7.10 ± 0.25 mm (0.280 ± 0.010 inch)	15.09 ± 0.13 mm (0.594 ± 0.005 inch)
111-1384	60.32 ± 0.13 mm (2.375 ± 0.005 inch)	20.50 ± 0.25 mm (0.807 ± 0.010 inch)	9.53 ± 0.13 mm (0.375 ± 0.005 inch)
125-7923	44.00 ± 0.50 mm (1.732 ± 0.020 inch)	N/A	10.38 ± 0.25 mm (0.409 ± 0.010 inch)
139-7587	66.68 ± 0.13 mm (2.625 ± 0.005 inch)	N/A	23.90 ± 0.13 mm (0.941 ± 0.005 inch)
142-5635	38.10 ± 0.50 mm (1.500 ± 0.020 inch)	6.97 ± 0.25 mm (0.274 ± 0.010 inch)	3.88 ± 0.25 mm (0.153 ± 0.010 inch)
142-5639	44.00 ± 0.50 mm (1.732 ± 0.020 inch)	N/A	10.38 ± 0.25 mm (0.409 ± 0.010 inch)
142-5640	38.10 ± 0.50 mm (1.500 ± 0.020 inch)	2.54 ± 0.25 mm (0.100 ± 0.010 inch)	N/A
147-5518	51.90 ± 0.50 mm (2.043 ± 0.020 inch)	N/A	9.28 ± 0.25 mm (0.365 ± 0.010 inch)
157-3903	50.80 ± 0.13 mm (2.000 ± 0.005 inch)	7.10 ± 0.25 mm (0.280 ± 0.010 inch)	15.09 ± 0.13 mm (0.594 ± 0.005 inch)
157-3906	60.32 ± 0.13 mm (2.375 ± 0.005 inch)	20.50 ± 0.25 mm (0.807 ± 0.010 inch)	9.53 ± 0.13 mm (0.375 ± 0.005 inch)
183-9526	53.00 ± 0.25 mm (2.087 ± 0.010 inch)	5.10 ± 0.25 mm (0.201 ± 0.010 inch)	9.85 ± 0.25 mm (0.388 ± 0.010 inch)
216-9784	38.10 ± 0.50 mm (1.500 ± 0.020 inch)	6.97 ± 0.25 mm (0.274 ± 0.010 inch)	3.88 ± 0.25 mm (0.153 ± 0.010 inch)
278-7099	38.10 ± 0.50 mm (1.500 ± 0.020 inch)	6.97 ± 0.25 mm (0.274 ± 0.010 inch)	3.88 ± 0.25 mm (0.153 ± 0.010 inch)
308-9890	66.68 ± 0.13 mm (2.625 ± 0.005 inch)	20.88 ± 0.13 mm (0.822 ± 0.005 inch)	17.91 ± 0.13 mm (0.705 ± 0.005 inch)
375-5961	38.10 ± 0.50 mm (1.500 ± 0.020 inch)	6.97 ± 0.25 mm (0.274 ± 0.010 inch)	3.88 ± 0.25 mm (0.153 ± 0.010 inch)
375-8470	53.00 ± 0.25 mm (2.087 ± 0.010 inch)	5.10 ± 0.25 mm (0.201 ± 0.010 inch)	9.85 ± 0.25 mm (0.388 ± 0.010 inch)
375-8556	51.90 ± 0.50 mm (2.043 ± 0.020 inch)	N/A	9.28 ± 0.25 mm (0.365 ± 0.010 inch)