Reconditioning Dimensions for Carrier Rollers {4154, 4180} Caterpillar

Caterpillar Products

Machines with Grease Lubricated Track with Swage

Machines with Greased Lubricated Track (GLT)

Machines with Positive Pin Retention (PPR) Track

Machines with Positive Pin Retention 2 (PPR2) Track

Machines with Sleeve Bearing Track

Machines with SystemOne Undercarriage

Machines with non-PPR Sealed and Lubricated Track

Introduction

© 2019 Caterpillar All Rights Reserved. This guideline is for the use of Caterpillar 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 Undercarriage Reconditioning Bulletin 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 Undercarriage Reconditioning Bulletin 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.

Summary

This bulletin is to provide reference dimension information for Carrier Rollers. The procedure can assist locations that work with roller bearings or rebuild or weld roller shells.

References

• Reconditioning Bulletin, SEBF8596, "Guideline for Roller and Idler Component Reuse"

• Handbook, PEKP9400, "Custom Track Service Handbook"

Safety

Illustration 1	g02139237

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.

This bulletin may contain hazardous steps. A safety alert symbol like the ones below is used to indicate a hazard.

Warning messages identify a specific, imminent, latent, hazard that has a reasonable probability of resulting in personal injury or death if the warning is ignored.

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Do not attempt to disassemble or assemble this machine until you read and understand the disassembly and assembly instructions. Improper disassembly and assembly procedures could result in injury or death.

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Do not stand near the hydraulic press while the press is in operation. A component that slips or breaks under pressure may fly into the air with great force. Personal injury or death can occur if struck by flying objects.

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Do not stand near the hydraulic press while the press is in operation. A component that slips or breaks under pressure may fly into the air with great force. Personal injury or death can occur if struck by flying objects.

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Personal injury or death can result from fumes, gases and ultraviolet rays from the weld arc. Welding can cause fumes, burn skin and produce ultraviolet rays. Keep your head out of the fumes. Use ventilation, exhaust at the arc, or both, to keep fumes and gases from your breathing area. Wear eye, ear and body protection before working. Protect yourself and others; read and understand this warning. Fumes and gases can be dangerous to your health. Ultraviolet rays from the weld arc can injure eyes and burn skin. Electric shock can cause death. Read and understand the manufacturer's instructions and your employer's safety practices. Do not touch live electrical parts. See "American National Standard Z49.1, Safety in Welding and Cutting" published by the American Welding Society. American Welding Society 2501 N.W. 7th Street Miami, Florida 33125 See "OSHA Safety and Health Standards, 29 CFR 1910", available from U.S. Department of Labor. U.S. Department of Labor Washington, D.C. 20210

Canceled Part Numbers and Replaced Part Numbers

This document may not include all canceled part numbers and replaced part numbers. Use NPR on SIS for information about canceled part numbers and replaced part numbers. NPR will provide the current part numbers for replaced parts.

Reconditioning Dimensions

Reconditioning dimensions are provided in the table that follows.

Illustration 2	g03318985
Sleeve bearing type of carrier roller

Illustration 3	g03319061
Tapered roller bearing type of carrier roller

The following information pertains to use of the reconditioning dimensions table.

AS - Assembly

GP - Group

SF - Single flange

S - Sleeve bearing type of carrier roller

T - Tapered roller bearing type of carrier roller

NA - Dimension not available

Dimension J - A wear dimension where the component is worn to the service limit (100% worn). (Beyond this point a rebuild cannot normally be successful).

Note: One legitimate method to identify track is to locate the part number forged into the link. Occasionally in this table, carrier rollers are tied to a machine by the associated link part number.