91721M Mariner BEARING

Introduction
Table 1
Revision     Summary of Changes in SEBF9329    © 2014 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 in order 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 in order 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 questions or additional information concerning this guideline, submit a form for feedback in the Service Information System. In order to address an urgent issue, use the following resources in order to communicate your request to Caterpillar Repair Process Engineering:
Caterpillar Dealer Technical Communicator
Dealer Solution Network
Caterpillar Technical Representative
Knowledge NetworkCanceled Part Numbers and Replaced Part Numbers
This document may include 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.Important Safety Information
Illustration 1 g02139237
Follow all safety warnings. Most accidents that involve product operation, maintenance, or repair are caused by failure to observe safety warnings. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs. Personnel must be properly trained in order to perform maintenance, repair, or operate any machine. Safety precautions and warnings are provided this instruction and on Caterpillar products. These warnings should be observed before performing any procedures. Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The warnings in this publication and on the product are not all inclusive.The hazards are identified by the "Safety Alert Symbol" which is followed by a "Signal Word" such as "DANGER", "" or "CAUTION". The "" Safety Alert Symbol is shown in Illustration 2.
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 "" 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.Summary
This guideline provides the weld procedure and fabricated parts to repair cracked welds around the axle mount. A crack typically initiates at the toes of the axle pad rear welds due to fatigue. The crack then propagates through the plate upwards into the Non-Engine End Frame (NEEF) side plates in a very long process. Do not attempt to repair the frame if the cracking has propagated to both inner and outer NEEF side plates and cracking in any of these plates is more than 100 mm in length, shown as (A) in Illustration 3.
Illustration 3 g03519396
Axle mount potential failure (A) Cracks propagating into NEEF side plates. (B) Crack locations.References
Use the following references for additional information regarding work outlined in this document.
Table 2
References    
Media Number     Title    
REHS1841     "General Welding Procedures"    
RENR8681     "Disassembly and Assembly"    Replacement Parts
When replacement parts are required for this product Caterpillar recommends using Caterpillar replacement parts or parts with equivalent specifications including, but not limited too physical dimensions, type, strength, and material. Failure to heed this warning can lead to premature failures, product damage, personal injury, or death.
Fabricated Parts
One plate and one block must be made before starting this procedure. Use the dimensions in Tables 3 and 4 to make the parts.
Illustration 4 g03519537
"Plate" dimensions. Make this part from AS3678 / 79