5006693 JOHNSON PISTON & RING, 0.020 in. O.S.

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Revision Summary of Changes
02 Entire core document has been modified. Introduction
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.The 588-3516 Support As and 596-1933 Support As have a 0.8 mm (0.03 inch) drilled oil hole in the base of the stand to provide oil spray to the inboard intake valve.The previous vintage 525-1901 Support As and 533-5779 Support As had a 1.6 mm (0.06 inch) oil hole in the base of the stand to provide oil spray to the inboard intake valve. The oil hole is drilled in a lower location on the stand compared to the newest vintage of rocker stand.The previous vintage 373-5448 Support As and 367-0491 Support As did not have an oil hole orifice drilled into the rocker stands.This procedure will provide information to machine the oil hole into the previous versions of the C175 support assembly, and if applicable, information to plug the old 1.6 mm (0.06 inch) drilled hole location. This will allow the reuse of previous vintage part numbers and incorporate the improvement in the 588-3516 Support As and 596-1933 Support As.Safety Section
Do not perform any procedure in this Special Instruction until you have read this Special Instruction and you understand this information. Use only proper tools and observe all precautions that pertain to the use of those tools. Failure to follow these procedures can result in personal injury. The following procedures should be observed.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 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.Ensure that the product will not be damaged or the product will be made unsafe by the operation, lubrication, maintenance, or the repair procedures.
Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.
Failure to follow all safety guidelines prescribed in this document and by governing authorities and regulatory agencies may result in severe injury or death of personnel or machine damage.
Personal injury or death can result from improper maintenance procedures. To avoid injury or death, follow the procedures exactly as stated below.
Personal injury or death can result from sudden movement.Prevent possible injury by performing the following procedures before work begins:Move the product or equipment to a smooth, level surface.When applicable, lower equipment/work tools to the ground.Engage the parking brake, system brakes and/or hydraulic lockout control. When applicable, stop the engine and remove the ignition key.Release system pressure from pressurized systems.If applicable, block the wheels/tracks.Turn the battery disconnect switch to the OFF position and if applicable, remove the battery disconnect key. If not equipped with a battery disconnect switch, disconnect the battery cables from the battery and tape the battery clamps. Attach a “Do Not Operate” or similar warning tag at the battery disconnect switch location and as defined by site rules and/or local regulations.
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Failure to use an approved access system during installation and removal of components could result in slipping and falling which could result in personal injury or death. To prevent injury or death, use an approved access system to reach the appropriate mounting locations of the components. Do not climb on the machine. Maintain three-points of contact and/or use a safety harness.
Observe the safe working load limits of all lifting and blocking devices and keep a safe distance from suspended/blocked loads. Personnel may be seriously injured or killed by falling loads.
Rework Procedure to Modify 367-0491 Support As and 373-5448 Support As to 588-3516 Support As or 596-1933 Support As
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