371-0351 Hydraulic Valve Seat Puller Group {0374, 0599, 0700, 0703} Caterpillar

Electric Power Generation

C175-16 GEN SET (S/N: WYB1-UP)

Off-Highway Truck/Tractor

793F (S/N: SND1-UP; SSP1-UP; RBT1-UP)

795F AC (S/N: ERM1-UP)

797F (S/N: LAJ1-UP; WSP1-UP)

Introduction

European Union Compliant, CE Marked

Important Safety Information

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Think Safety

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 operation, lubrication, maintenance, and repair information.

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 Cat 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. This 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 tool capabilities.

Maintenance Section

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

Safety Section

General Hazard

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Information

Wear a hard hat, protective glasses, and other protective equipment, as required. Do not wear loose clothing or jewelry that can snag on controls or on other parts of the equipment. Make sure that all protective guards and all covers are secured in place on the equipment.

Know the appropriate work site hand signals and the personnel that are authorized to give the hand signals. Accept hand signals from one person only.

Obey all local regulations for the disposal of liquids.

Do not allow unauthorized personnel on the equipment.

Unless you are instructed otherwise, perform maintenance with the equipment in the servicing position. Refer to the Operation and Maintenance Manual for the procedure for placing the equipment in the servicing position.

Crushing Prevention and Cutting Prevention

Support the equipment properly before you perform any work or maintenance beneath that equipment. Do not depend on the hydraulic cylinders to hold up the equipment. Equipment can fall if a control is moved, or if a hydraulic line breaks.

Stay clear of all rotating and moving parts.

Safety Icon Nomenclature

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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 Manuals. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Cat dealer for replacement manuals. Proper care is your responsibility.

Personal Protection/Important Information

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Personal Protection/Important Information

Hazard Avoidance

Crushing Hazard (foot)

Crushing Hazard (hand)

Pinch Point

General Information Section

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The 351-0351 Hydraulic Valve Seat Puller Group is used to quickly and safely remove valve seats from cylinder heads. By utilizing collets made specifically for the exhaust and intake insert profile, it will remove the insert without damage to the seat bore or combustion surface of the cylinder head.

This tool is intended for use when batch processing cylinder heads and is best suited for high volume operations. A provision is located in the top of the Reaction Cap to allow the tool to be suspended with a tool balancer.

The 351-0351 Hydraulic Valve Seat Puller Group is to be used with Cat electric/hydraulic pumps and an appropriate hydraulic hose.

Note: CE Compliance requires the use of appropriate CE Compliant power supply and hoses.

References

Note: Refer to SEBF9137 Installation, and Removal of the Valve Guides and Water Cooled Valve Seat Inserts for the G3500 Series of Engines for additional operation information.

Note: Refer to SIS Web. The list of references may change frequently. Always locate and refer to the appropriate Disassembly and Assembly Service Manual for information on mounting and lifting hardware.

Introduction

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Operation Section

Operation

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Figure 1

To set up the tool for valve seat removal, it is required that the appropriate Standoff and Collet Set is installed.

1. Remove the Reaction Cap screws (figure 1). The spring is under slight tension under the Reaction Cap so it may require slight pressure on the Reaction Cap to remove the final screw.
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2. Remove the spring and Drawbar Collar. (figure 2)

   Note: Drawbar collar has a ball detent to hold it in place and should push off with slight pressure.

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3. Remove the Drawbar, Slide-Lower, and Washer.
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4. Install the appropriate standoff for the engine series being disassembled. The standoff is attached with four Standoff Screws on the lower surface of the Hydraulic cylinder. Torque screws to 12 ± 3 Nm (8.9 ± 2.2 lb/ft) See Chart A for Standoff and Collet application details.
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5. Install the Slide-Lower through the slot in the Standoff. Verify that the slide is oriented with the engraved lettering upward.
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6. Install the Drawbar and Washer through the hole in the slide and through the Cylinder. The Washer must be on the bottom as shown.
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7. Install the Drawbar Collar in the upper groove on the Drawbar. Install the Spring as shown.
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8. Install the Reaction Cap. The Spring will exert pressure on the cap so it will require slight pressure downward on the Cap to align the screw holes. Torque screws to 12± 3 Nm (8.9 ± 2.2 lb/ft).
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9. Install the appropriate Collet set for the engine series and seat. Most cylinder heads will require separate collets for removal of the exhaust or intake seats. The installation of the Collet Set may be made easier by utilizing the installation tool shown in Illustration 21.
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10. Attach the hose from the selected hydraulic power supply. Hose must be rated to match power supply output. (8F0024 or 6D7726 is acceptable).
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11. Remove all dirt and debris from the combustion surface and the valve seat insert bore. The insert removal tool will not seat properly if there is a large buildup of debris in the insert bore.
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12. Position the insert removal tool into the bore of the valve seat. Once in place, you may slide the polycarbonate shield down to cover the windows on the Standoff.
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    Illustration 18	g03412701

13. Slide the plate to lock the insert removal tool in place.

14. Activate the hydraulic pump to remove the valve seat. Observe the pressure on the power supply gauge. Allow the cylinder to fully stroke until the pressure drops. This indicates the seat has been pulled from the bore.
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    Illustration 19	g03412738

15. Lift the insert removal tool off the cylinder head. Slide the plate to unlock the insert removal tool. Slide the insert and the collets back, and remove the insert.

16. Repeat the process on the remaining inserts.

Inspection and Maintenance Section

Inspection

1. Inspect tooling prior to each use for damage, bending, nicks, burrs, dents, cracks, bent, or worn parts. If damage is found, destroy the tool and dispose of as scrap. Replace damaged tool with new product.

2. Inspect the polycarbonate shield for cracks.

3. Do not use if any holes are elongated or deformed.

4. Do not use if hardware is damaged or missing.

5. Inspect the Standoff for deformation. Repair or replace if necessary.

6. Have the tool inspected annually by an approved dealership inspector.

Maintenance

The 371-0351 Hydraulic Valve Seat Extractor is shipped with documents that contain information on repair items for the Hydraulic Cylinder. These can be obtained from a local Enerpac distributor or contact Dealer Service Tools.

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The following items and the collets and standoffs listed in Chart A can be ordered through the parts distribution system for repair.

Cleaning

Clean the tooling using a non-solvent based cleaner.

Storage

1. Store the tooling in a clean, dry location to prevent rust or corrosion. Tooling can be damaged by moisture or high humidity.

2. The tool should be stored in the most stable position. Store the tool laying flat, or hanging from appropriate hooks to prevent falling.

Tool Disposal

At the end of the operational life of the tool, destroy the tool and dispose of as scrap.

Additional Contact Information

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

USA: 800-542-8665, Option 1

International: 1-309-578-7372

Note: Continuing improvement and advancement of product design can mean some photographs or illustrations in this publication will show details that are different from your service tool.

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