Procedure to Selection of Parts for Right Turbocharger to Clean Emissions Module (CEM) Inlet for Certain C175 Engines {1052, 1061, 108D} Caterpillar

Engine

C175-16 (S/N: 3B91-UP)

C175-20 (S/N: R4F1-UP)

Introduction

This Special Instruction provides procedure to selection of parts for right turbocharger to Clean Emissions Module (CEM) inlet for certain C175 Engines

Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.

It is not necessary to perform this procedure if the locomotive hatch, CEM, and/or turbocharger have not been removed/replaced.

Important Safety Information

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 should 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 that might involve a potential hazard.

Ensure that the product will not be damaged or the product will not be made unsafe by the operation, lubrication, maintenance, or repair procedures used.

Ground the equipment. Improper grounding will result in electrical current paths that are uncontrolled and unreliable. Uncontrolled electrical circuit paths can result in damage to the equipment. Uncontrolled electrical circuit paths can also cause electrical activity that may degrade the electronics and communications. Ensure that all grounds are secure and free of corrosion.

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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.

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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 any Caterpillar dealer for replacement manuals. Proper care is your responsibility.

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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.

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Personal injury or death can occur from heavy components falling during removal or installation. Properly support the component with a suitable lifting device during removal or installation.

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Only persons with training in electrical installations must carry connections to the generator. The generator must be wired correctly. A fire or electrocution could result from wiring that is incorrect. The generator is capable of generating high voltages. Ensure that the generator is not on while the connections are being made. Follow these steps in order to prevent accidental starting: Isolate the machine from all external loads and sources. Shut off the Engine. Disconnect the battery supply lines and tape the leads.

Part Selection Procedure

Perform the below procedure to select correct Bellows Assembly and Exhaust Elbows:

Illustration 1	g06264597
Bellows Assembly and Exhaust Elbow (A) Bellows Assembly (B) Exhaust Elbow (C) Bellows Dimension

1. Measure and record the installed distance (C) of the original Bellows (A) and Elbow (B).

2. Identify the original part numbers of the Bellows and Elbow in Table 1.

3. Now identify the new part numbers corresponding to the original part numbers and the distance (C) measured in step 1.