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Introduction
This Special Instruction outlines the procedure for reworking and installing the new 456-6664 Engine Mounts in the engine mounting group on the machines listed above.Important Safety Information
Note: Do not perform any procedure in this Special Instruction until you read the information and you understand the information.Clean all surfaces and remove burrs from all areas where parts are to be installed. Chase all tapped holes used for mounting purposes.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 must also have the necessary training, skills, and tools in order 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 of a potential hazard.Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. Avoid using a tool, a procedure, a work method, or operating technique that is not recommended by Caterpillar. If used, ensure the safety of the operating personnel and others.
Do not operate or work on this machine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manual. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Caterpillar dealer for replacement manuals. Proper care is your responsibility.
Personal injury or death can result from improper troubleshooting and repair procedures.The following troubleshooting and repair procedures should only be performed by qualified personnel familiar with this equipment.
Accidental engine starting can cause injury or death to personnel working on the equipment.To avoid accidental engine starting, disconnect the battery cable from the negative (−) battery terminal. Completely tape all metal surfaces of the disconnected battery cable end in order to prevent contact with other metal surfaces which could activate the engine electrical system.Place a Do Not Operate tag at the Start/Stop switch location to inform personnel that the equipment is being worked on.
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 kill. Read and understand the manufacturer's instruction and your employer's safety practices. Keep your head out of the fumes. Use ventilation, exhaust at the arc, or both, to keep fumes and gases from your breathing zone and the general area. Wear correct eye, ear and body protection. Do not touch live electric parts.Refer to the American National Standard Z49.1, "Safety in Welding and Cutting" published by the American Welding Society, 2501 N.W. 7th Street, Miami, Florida 33125: OSHA Safety and Health Standards, 29 CFR 1910, available from U.S. Dept. of Labor, Washington D.C. 20210.
Required Parts List
Table 1
Required Parts List    
Item     Quantity     Part Number     Description    
1     6     456-6664     Engine Mount    
2     4     8T-4956     Bolt    
3     4     8T-4244     Nut    
4     8     8T-4192     Bolt    
5     16     8T-4223     Hard Washer    
6     6     260-6708     Screw    
7     6     7X-0515     Hard Washer    
8     6     3K-2889     Locknut    Rework Procedure to Install the New 456-6664 Engine Mounts in the Engine Mounting Group
Remove former 338-2959 Engine Mount from the engine mounting group. Discard the part.
Illustration 1 g03686485
Illustration 2 g03686486
View AParts removed for clarity
Install new 456-6664 Engine Mounts (1) using hardware that is listed in Table 1. Refer Illustration 1 and Illustration 2 for proper mounting location of hardware.