Operating Instructions for 148-2997 Valve Recession Tool Group Used On 3600, G3600, and C175 Engines{0374, 0599, 0701, 0703, 0759} Caterpillar

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Introduction

Important Safety Information

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Think Safety

European Union Compliant, CE marked

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.

Improper operation, lubrication, maintenance, or repair of this product can be dangerous and could result in injury or death.

Do not operate or perform any lubrication, maintenance, or repair on this product until you have read and understood the Tool Operating Manual.

Safety precautions and warnings are provided in this manual and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons.

The hazards are identified by the "Safety Alert Symbol" and followed by a "Signal Word" such as "DANGER", "WARNING", or "CAUTION". The Safety Alert "WARNING" label is shown below.

A non-exhaustive list of operations that may cause product damage are identified by "NOTICE" labels on the product and in this publication.

Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The warnings in this publication and on the product are, therefore, not all inclusive. If a tool, procedure, work method, or operating technique that is not recommended by Caterpillar is used, the operator must be sure that the procedures are safe. The operator must also be sure that the product will not be damaged or made unsafe by any unspecified procedures.

The information, specifications, and illustrations in this publication are based on information that was available at the time that the publication was written. 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 and most current information before you start any job.

When replacement parts are required for this product Caterpillar recommends using Caterpillar replacement parts or parts with equivalent specifications including, but not limited to, physical dimensions, type, strength, and material.

Literature Information

This manual contains safety information, operation instructions and maintenance information and should be stored with the tool group

Some photographs or illustrations in this publication may show details that can be different from your service tool. Guards and covers might have been removed for illustrative purposes.

Continuing improvement and advancement of product design might have caused changes to your service tool, which are not included in this publication.

Whenever a question arises regarding your service tool or this publication, consult Dealer Service Tools (DST) for the latest available information.

Safety Section

The Safety section lists basic safety precautions.

Read and understand the basic precautions listed in the Safety section before operating or performing maintenance and repair on this service tool.

General Information Section

The General Information section describes tooling functions and features. The section provides useful information on individual parts, additional tooling, and resources.

Operation Section

The Operation section is a reference for the new operator and a refresher for the experienced operator.

Photographs and illustrations guide the operator through correct procedures for using the tool group.

Operating techniques outlined in this publication are basic. Skill and techniques develop as the operator gains knowledge of the service tool and the tools capabilities.

Maintenance Section

The Maintenance section is a guide to tool inspection, cleaning, storage, and tool disposal

Service Parts Section

The Service Parts section is a reference for parts identification and available part numbers.

Safety Icon Nomenclature

Personal Protection/Important Information

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Personal Protection/Important Information

Prohibited Action

No smoking

Hazard Avoidance

Crushing hazard (foot)

Crushing hazard (hand)

Pinch point

Fire hazard

Electrical Shock - Hazard

Fire hazard

General Information

Introduction

The 148-2997 Valve Recession Tool Group is used to determine the actual valve and valve seat wear on 3600 and G3600 Engines. When used with additional tooling, purchased separately, the C175 Engine can also be checked.

Specific projection gage blocks are used to "zero" the dial or digital indicator before measurements are taken. A magnetic base assembly allows secure placement of the tooling for "zeroing" the indicator and taking measurements on an engine. This tooling allows measurements without removing the cylinder head rocker arms.

Nomenclature

Additional Contact Information

For additional product support questions concerning this tool, contact the Caterpillar Dealer Service Tools Hotline at:

Operation Section

3600, G3600 Engine

Illustration 3	g02874900
Valve Recession Tooling For 3600 and G3600 Engine

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(3) Body (4) Extension Rod (10) Snap Ring

1. Insert 146-3271 Extension Rod (4) into body (3). Snap ring (10) on the extension rod fits inside the body.

2. Thread lower end of 5P-4814 Clamp Collet (2) onto body (3) and tighten.

3. Fully insert 6V-3075 Dial Indicator (1) or 1U-8869 Dial Indicator (both dealer supplied) into 5P-4814 Clamp Collet (2). Tighten the upper end of the clamp collet to secure the indicator to body (3) .

4. Insert the lower end of body (3) into 146-3270 Base Assembly (5) or optional 326-7698 Base Assembly (7). Use a 3 mm (0.12 inch) Allen wrench (dealer supplied) to tighten the set screw into locator hole (A) in the body.

   Note: When using optional 326-7698 Base Assembly (7) on 3600, G3600 Engines, only use the lower set screw to locate body (3) .

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(3) Body (7) 326-7698 Base Assembly (optional)

5. Make sure the magnetic bottom of base assembly (5) or (7) is clean. (NO metal particles sticking to magnet).

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Illustration 6	g02874916
(1) 6V-3075 Dial Indicator or 1U-8869 Dial Indicator (2) 5P-4814 Clamp Collet (3) Body (4) Extension Rod (5) 146-3270 Base Assembly (6) 146-2738 Projection Gage Block (7) Optional Base Assembly (10) 6V-9500 Snap Ring

6. Push (retract) extension rod (4) into body (3) and hold while carefully placing base assembly (5) or (7) onto 146-2738 Projection Gage Block (6). Once the base assembly firmly attaches to the gage block, release (extend) the extension rod.

7. Zero the indicator.

   1. Turn the face of 6V-3075 Dial Indicator to "ZERO".

   2. Push the "ON/OFF" button to turn "ON" the 1U-8869 Digital Indicator , then push the "ZERO/ABS" button to reset the readout to "ZERO".

8. Follow the specific testing procedure covered in the appropriate service manual to:

   1. Remove the valve cover from the engine.

   2. Carefully remove the tool group from projection gage block (6) and gently place the tool on a valve rotator. Extension rod (4) should be touching the top deck of the cylinder head.

   3. Read the valve rotator projection value from the dial indicator/digital indicator and record the number.

   4. Repeat the procedure on the next valve.

Note: Occasionally place the tool back on reference projection gage block (6) to verify the "ZERO" setting. If necessary, make sure magnetic base assembly (5) or (7) is clean. No metal particles sticking to magnet. Make sure the set screw in the base assembly is correctly tightened in locator hole (A) on body (3). Recheck all valve recession measurements to verify accuracy.

C175 Engine

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Valve Recession Tooling For C175 Engine

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(3) Body (4) Extension Rod (10) Snap Ring

1. Insert 146-3271 Extension Rod (4) into body (3). Snap ring (10) on the extension rod fits inside the body.

2. Thread lower end of 5P-4814 Clamp Collet (2) onto body (3) and tighten.

3. Fully insert 6V-3075 Dial Indicator (1) or 1U-8869 Dial Indicator (both dealer supplied) into 5P-4814 Clamp Collet (2). Tighten the upper end of the clamp collet to secure the indicator to body (3) .

4. Insert the lower end of body (3) into 326-7698 Base Assembly (7). Use a 3 mm (0.12 inch) Allen wrench (dealer supplied) to tighten the upper set screw into locator hole (A) in the body.

Note: On C175 Engines, only use the upper set screw on 326-7698 Base Assembly (7) to locate body (3).

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Illustration 9	g02874960
(3) Body (7) 326-7698 Base Assembly

5. Make sure the magnetic bottom of base assembly (7) is clean. NO metal particles sticking to magnet.

6. Select 326-7689 Projection Gage Block (intake) (8) or 326-7693 Projection Gage Block (exhaust) (9) .

   Note: The gage block is Laser etched with part number, INTAKE or EXHAUST, and dimension, for easy identification.

7. Push (retract) extension rod (4) into body (3) and hold while carefully placing base assembly (7) onto projection gage block (8) or (9). Once the base assembly firmly attaches to the gage block, release (extend) the extension rod.

8. Zero the indicator.

   1. Turn the face of 6V-3075 Dial Indicator to "ZERO".

   2. Push the "ON/OFF" button to turn "ON" the 1U-8869 Digital Indicator , then push the "ZERO/ABS" button to reset the readout to "ZERO".

9. Follow the specific testing procedure covered in the appropriate service manual to:

   1. Remove the valve cover from the engine.

   2. Carefully remove the tool group from projection gage block (6) and gently place the tool on a valve rotator. Extension rod (4) should be touching the top deck of the cylinder head.

   3. Read the valve rotator projection value from the dial indicator/digital indicator and record the number.

   4. Repeat the procedure on the next valve.

Note: Occasionally place the tool back on reference projection gage block (6) to verify the "ZERO" setting. If necessary, make sure magnetic base assembly (5) or (7) is clean. No metal particles sticking to magnet. Make sure the set screw in the base assembly is correctly tightened in locator hole (A) on body (3). Recheck all valve recession measurements to verify accuracy.

Maintenance Section

Inspection

• Inspect tooling prior to each use for nicks, burrs, cracks, and worn or damaged parts. If damage is found, discontinue use until inspected and released for use by an approved inspector at the dealership.

• Make sure the extension rod moves up and down freely in the body.

• Have tooling inspected and calibrated annually by an approved inspector at the dealership.

Cleaning/Lubrication

• Clean tooling with a clean, dry, lint free cloth. Do not use solvents to clean indicators.

• Lightly lubricate sliding parts with a good quality oil, such as Caterpillar 222-3123 Light Penetrating and Lubricating Oil .

Storage

• When the tooling is not in use, store tooling in a foam lined case. Store indoors, in a clean, dry location to prevent rust or corrosion.