- Caterpillar Products: All
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 |
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| Fire hazard |
General Information Section
Introduction
The 242-3980, 329-2630, and 329-2631 Piston Ring Groove Gauges are precision tools used to check 3500 Engine piston ring grooves for wear.
The 246-1176 Piston Ring Groove Gauge Group includes the 242-3980 Gauge (not serviced separately), 6V-3073 Storage Case , foam inserts for storage case, Tool Operating Manual, and Storage Case Decal.
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246-1176 Piston Ring Groove Gauge Group . | |
The 329-2630 and 329-2631 Piston Ring Groove Gauges are only available separately.
Storage cases and foam inserts are available in PECJ0003-01 - Cat® Shop Supplies and Hand Tools catalog.
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.
Operation Section
Applications
The 242-3980 Piston Ring Groove Gauge is used to check the top ring groove of 3500A and B Engines with monotherm pistons.
The 329-2630 Piston Ring Groove Gauge is used to check the top ring groove of monotherm pistons on 3500B Engines with serial numbers 7TR, 2GR, or 7RN.
The 329-2631 Piston Ring Groove Gauge is used to check the second ring groove of monotherm pistons on 3500B Engines with serial numbers Series 7TR, 2GR, or 7RN.
Note: The 242-3980, 329-2630, and 329-2631 Piston Ring Groove Gauges are a Go/NoGo design. If the gauge passes through the appropriate ring groove of the piston, beyond the widest point, the piston cannot be reused. If the gauge DOES NOT pass through the ring groove, the piston CAN be reused.
Procedure
| NOTICE |
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Piston ring groove gauges are precision instruments. To avoid damage to gauges, do not drop, strike with a hammer, or store where damage to the tool can occur. If gauge is dropped, discontinue use and contact the manufacturer for blade replacement and/or recalibration. |
- Thoroughly clean the ring grooves of the piston to be checked.
- Slide the appropriate piston ring groove gauge into the designated ring groove. The gauge should be aligned with the piston pin bore, as shown.
Note: For more information on cleaning piston ring grooves, refer to Special Instruction, SEBF8059, "Procedure to Clean and Inspect One-Piece Pistons".
- Remove the gauge, turn the piston 90 degrees and check the same ring groove again.
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Slide Gauge Into Ring Groove Aligned With The Pin Bore. | |
- If the gauge did not pass through the ring groove on either attempt, the piston can be reused.
- Wipe the piston gauge blades with a clean dry cloth.
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Reuse Do Not Reuse | |
- Repeat Step 1 through Step 5 to check other applicable piston ring grooves, as required.
Maintenance Section
Maintenance
- When finished checking piston ring grooves, wipe down the piston ring groove gauge with a clean, dry cloth.
- Store in a protective foam lined case, in a clean, dry, climate controlled location.
- Inspect prior to each use for nicks, burrs, dents, cracks, bends, or worn parts. If damage is found, discontinue use until inspected and released for use by an approved inspector at the dealership.
- Have the gauge inspected annually by an approved dealership inspector.
- At the end of the gauges operational life, destroy the tool and dispose of as scrap.
Note: For blade replacement and/or recalibration of these gauges, contact Reef Tool and Gage Company, Inc at:
Reef Tool and Gage Company, Inc.44800 Macomb Industrial Dr.
Clinton Township, MI 48036
Telephone: 1-586-468-3000Fax: 1-586-468.3002reeftoolandgage@ameritech.net