0330131 JOHNSON SCREW, Plug

Introduction
This Special Instruction provides the criteria to visually inspect the cylinder head integral seal on certain machine engines.Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.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.
Illustration 1 g06276183
Personal injury can result from improper handling of chemicals.Make sure you use all the necessary protective equipment required to do the job.Make sure that you read and understand all directions and hazards described on the labels and material safety data sheet of any chemical that is used.Observe all safety precautions recommended by the chemical manufacturer for handling, storage, and disposal of chemicals.
Do not operate the machine if any guards or covers are missing or inadequately secured. Personnel could be seriously injured or machine damage may occur.
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.
Required Parts
Table 1
Required Parts
Qty Part Number Part Name
1 370-8028 Integral Seal
1 394-0295 Integral Seal Visual Inspection Procedure
Perform the following visual procedures to determine, if irregularities in the molded rubber of the integral seals are acceptable for use. If any of the unacceptable irregularities listed below are found on the current parts in Section "Unaccept