C9.3 Head Tool Improvements{0599, 0701, 0703, 1100} Caterpillar

Industrial Engine:

C9.3 (S/N: C9N1-UP)

Wheel Tractor-Scraper:

627H (S/N: WDB1-UP)

Introduction

European Union Compliant, CE Marked

Important Safety Information

Illustration 1	g02139237
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

Safety Icon Nomenclature

Personal Protection/Important Information

Illustration 2	g02166423
Personal Protection/Important Information

Hazard Avoidance

Crushing Hazard (foot)

Crushing Hazard (hand)

Pinch Point

General Information Section

Introduction

The 424-2293 C9.3 Tool Group is used to remove the C9.3 injector sleeve as well as compress the valve springs for removal and installation. Care should be taken to assure the piston is at or close to TDC when compressing and removing valve spring retainers.

Injector sleeve removal requires the use of a slide hammer with a 3/8 - 16 thread (such as 6V2166).

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

E-mail: dealerservicetool_hotline@cat.com

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.

Operation Section

Extracting the C9.3 Injector Sleeve

1. Insert the injector plug into the injector bore to remove the sleeve.

Show/hide table



Illustration 3	g03346034

2. Set the 364-0745 Plate over the injector plug and install the injector hold down clamp bolt to keep the plug from rotating in the bore.

Show/hide table



Illustration 4	g03346040

3. Use the supplied 370-8733 Tap to tap through the 2 holes in the injector plug to create a partial thread on the injector sleeve. There is an etched mark (1) on the tap to show how far to tap the threads. Going beyond that mark could cause the tap to break.

Show/hide table



Illustration 5	g03346044

Show/hide table



Illustration 6	g03346072

4. Once the holes are tapped, install 2 - M6 bolts in the injector plug.

Show/hide table



Illustration 7	g03346076

5. Remove the bolt and plate that held the plug in place.

6. Use a slide hammer installed in the center hole of the plug to drive out the old injector sleeve. The O-ring at the bottom of the plug will keep metal shavings from falling into the cylinder.

Compressing the C9.3 Valve Springs

1. Insert the injector plug into the injector bore.

2. Set the 364-0745 Plate over the injector plug and install the injector hold down clamp bolt to constrain the plug in the bore. Variations in machining on the engine head may require the use of a shim (standard washer) between the clamp and the cylinder head to keep the plate parallel over the injector plug.

Show/hide table



Illustration 8	g03346091

3. Install the supplied 424-2289 Threaded Rod into the center bore of the injector plug.

4. Install the 371-1603 Plate and the supplied thrust washer assembly and 3/8-16 nut. Orient the plate as necessary to miss various casting features on the head that would limit compression of the valve springs.

Show/hide table



Illustration 9	g03346095

5. Compress the valve springs to install/remove the retainer keys.

6. Loosen the nut to relieve the valve springs, taking care to keep the threaded rod from turning, so that it remains in the injector until there is no more load on the springs. There are flats machined on the threaded rod for a wrench to constrain its movement while unloading the springs.