Standardized Parts Marking Procedures {1000, 7000} Caterpillar

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Introduction

© 2019 Caterpillar All Rights Reserved. This guideline is for the use of Cat dealers only. Unauthorized use of this document or the proprietary processes therein without permission may be violation of intellectual property law.

Information contained in this document is considered Caterpillar: Confidential Yellow.

This Reuse and Salvage Guideline contains the necessary information to allow a dealer to establish a parts reusability program. Reuse and salvage information enables Caterpillar dealers and customers to benefit from cost reductions. Every effort has been made to provide the most current information that is known to Caterpillar. Continuing improvement and advancement of product design might have caused changes to your product which are not included in this publication. This Reuse and Salvage Guideline must be used with the latest technical information that is available from Caterpillar.

For technical questions when using this document, work with your Dealer Technical Communicator (TC).

To report suspected errors, inaccuracies, or suggestions regarding the document, submit a form for feedback in the Service Information System (SIS Web) interface.

Canceled Part Numbers and Replaced Part Numbers

This document may include canceled part numbers and replaced part numbers. Use the Numerical Part Record (NPR) on the Service Information System Website (SIS Web) for information about canceled part numbers and replaced part numbers. NPR will provide the current part numbers for replaced parts.

Important Safety Information

Illustration 1	g02139237

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. Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. If a tool, a procedure, a work method, or operating technique that is not recommended by Caterpillar is used, then ensure that it is safe for you and for other people to use. Ensure that the product will not be damaged or the product will not be made unsafe by the operation, lubrication, maintenance, or the repair procedures that are used.

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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” which is followed by a “Signal Word” such as “DANGER”, “WARNING” or “CAUTION”. Refer to Illustration 2 for an example of a “WARNING” Safety Alert Symbol.

Illustration 2	g00008666

This safety alert symbol means:

Pay attention!

Become alert!

Your safety is involved.

The message that appears under the safety alert symbol explains the hazard.

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 safety information in this document and the safety information on the machine are not all inclusive. Determine that the tools, procedures, work methods, and operating techniques are safe. Determine that the operation, lubrication, maintenance, and repair procedures will not damage the machine. Also, determine that the operation, lubrication, maintenance, and repair procedures will not make the machine unsafe.

The information, the specifications, and the illustrations that exist in this guideline are based on information which was available at the time of publication. 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, most current information before you start any job. Caterpillar dealers can supply the most current information.

Summary

A standardized method for marking components is necessary to be able to account for the history of a rebuilt part. The following information should be recorded: the number of rebuilds and the number of hours on each rebuild the part number of the component. This information will help extend the life of the Planned Component Rebuild (PCR). A longer life of the PCR means a lower cost per hour to operate the vehicles.

This guideline will provide a recommended standard method of marking components. This method is consistent with all dealers. This guideline does not provide information regarding reusability of parts.

Caterpillar Inc. provides Reuse and Salvage Guidelines that must be followed to determine if the part is reusable. If the component does not meet the criteria for reusability and the criteria for salvage in a published guideline, do not use the component again.

Tooling and Equipment

To mark the parts correctly, the following tools are needed:

Preparation

All parts must be thoroughly cleaned and degreased prior to using the 9U-7377 Metal Marking Pen. After the part is etched, allow the part to dry for 30 seconds before wiping with a cloth soaked in oil.

Code for Marking Procedure

The procedure for marking includes a code that will identify the number of rebuilds and the number of hours on each rebuild.

Mark all parts according to the examples that follow:

• In “1 - 12”, the “1” would indicate the first rebuild, and the “12” would indicate that there were 12,000 hours on the part at the time of rebuild.

• In “2 - 9”, the “2” indicates that the piece has already had two rebuilds. The “9” would indicate that there were 9,000 hours on the part at the time of the second rebuild.

This coding can be used by all dealers and the coding will help with identification at time of rebuild. This can be especially helpful if units that have been rebuilt are sold into different territories. As new overhauls are completed, the previous markings should be left on the part.

Procedure for Marking

This section provides recommended areas for marking on selected parts. The recommended areas for marking are indicated by arrows on each illustration. The captions give the location for marking the parts. The captions also give a recommended method of marking. Only mark parts with the recommended methods. Damage to the parts and the related components could occur if other methods are used.

Engine Parts

Illustration 3	g01817523
Valves Valves should be marked on the stem of the valve near the end. The valve is not to be marked in the area that goes into the guide. Use a metal marking pen.

Illustration 4	g01817533
Pistons Pistons should be marked on the pad on the underside of the piston. Use a metal marking pen.

Illustration 5	g01817539
Pistons Pistons should be marked on the pad on the underside of the piston. Use a metal marking pen.

Illustration 6	g01817544
Piston Skirt Piston skirts should be marked on the lower bottom end of skirt. Use a metal marking pen.

Illustration 7	g01817549
Connecting Rod Connecting rods should be marked on the rod and the end cap on the side of each half. Use an air engraver.

Illustration 8	g01817553
Cylinder Head Cylinder heads should be marked on the head on the end near the cast part number. Use metal stamps or an air engraver .

Illustration 9	g01817560
Rocker Arm Assembly Rocker arm assemblies should be marked on the assembly near the part number. Use an air engraver.

Illustration 10	g01817567
Bridge Bridges should be marked on the side of the bridge. Use an air engraver.

Illustration 11	g01817564
Pushrod Pushrods should be marked on the side of the pushrod. Use a metal marking pen.

Illustration 12	g01817569
Injector Injectors should be marked on one of the flats of the injector. Common Rail Injectors should be marked in a location that does not interfere with high-pressure fittings. Use a metal marking pen.

Illustration 13	g01817571
Crankshaft Crankshafts should be marked on the crankshaft on the end near the bolt hole pattern. Use metal stamps, a metal marking pen, or an air engraver. If stamps or an air engraver is used, make sure that there are no raised surfaces around the marked area.

Illustration 14	g01817573
Block Blocks should be marked on the block near the raised cast FRONT. Use metal stamps.

Illustration 15	g01817574
Gears in the engine Gears in the engine should be marked on the face near the part number. Use an air engraver .

Illustration 16	g01817578
Roller lifter Roller lifters should be marked on the lifter on one of the recessed areas. Use an air engraver or a metal marking pen.

Illustration 17	g01820341
Camshaft Camshafts should be marked on the end between bolt holes. Use an air engraver or a metal marking pen.

Illustration 18	g01820354
Slipper Follower Slipper followers should be marked in a recessed area. A solid follower cannot be marked. Use an air engraver to mark the recessed area.

Illustration 19	g01820376
Lifter Guide Spring Lifter guide springs should be marked on the spring on the inside of the tang. Use an air engraver.

Illustration 20	g01820383
Piston Pin Piston pins should be marked on the end. Use an air engraver or a metal marking pen.

Illustration 21	g01820394
Front Cover Front covers should be marked near the part number. Use metal stamps or an air engraver.

Illustration 22	g01820398
Rear Cover Rear covers should be marked near the part number. Use metal stamps or an air engraver.

Illustration 23	g01820413
Damper Dampers should be marked near the alignment mark. The alignment mark is in the outer bolt hole pattern. Use an air engraver.

Illustration 24	g01820415
Cylinder Liner Cylinder liners should be marked on the outer top edge. Liners can also be marked on the outside of the liner under the flange. This mark should not be in the area of the fire ring. Use a metal marking pen.

Illustration 25	g01820420
Rocker Arm Shaft Rocker arm shafts should be marked on the end of the shaft. Use an air engraver or a metal marking pen.

Illustration 26	g01820423
Flywheel Flywheels should be marked near the bolt pattern. Use an air engraver.

Illustration 27	g01820534
Valve Spring Valve springs should be marked with a line on one side of the spring. The line should extend the entire length of the spring. Make an extra mark for each rebuild. Use paint markers.

Illustration 28	g06277746
Example of C175 main stud without markings C175 main studs can be torqued up to 10 times before replacement is necessary.

Illustration 29	g06277743
Example of stud after stud has been tightened. Marks can be made with an X stamp. Be sure to stay away from thread area when stamping. Mark the stud for each time that the main stud has been torqued. This will ensure that the stud is not used past its intended service life. Stamp away from the outside of the stud near the threads to prevent damage to the stud.

Transmission Parts

Illustration 30	g01820538
Planetary gears Mark the gear on the side. This should be in an area that is not covered by the thrust washer. Use a metal marking pen.

Illustration 31	g01820575
Planetary Shaft Pins The pin should be marked on the end. Use a metal marking pen.

Illustration 32	g01820593
Planetary Carriers Mark the carrier on the top deck. Use an air engraver.

Illustration 33	g01820816
Clutch Housings Mark the housing on the surface that does not wear. This surface should be near the pin holes. Use an air engraver.

Illustration 34	g01820818
Clutch Pistons Mark the piston on the side of the tang that is toward the clutch housing. Use an air engraver.

Illustration 35	g01820821
Center Shaft The end of the shaft should be marked. Use an air engraver or a metal marking pen.

Illustration 36	g01820822
Transmission Case Mark the case near the identification tag. Use metal stamps or an air engraver.

Transfer Gear Case

Illustration 37	g01820826
Gears Mark the gear on a surface that does not wear. This surface should be close to the part number. Use a metal marking pen.

Illustration 38	g01820828
Yoke Mark the yoke on a surface that does not wear. Use an air engraver.

Illustration 39	g01820830
Bearing Cages The bearing cages should be marked near the part number. Use an air engraver.

Illustration 40	g01820832
Case Assembly Mark the case near the part number. Use metal stamps or an air engraver.

Final Drive

Illustration 41	g01820837
Planetary Gears Mark the gears on the side. Make sure that the marked area is not covered by the thrust washer. Use a metal marking pen.

Illustration 42	g01820839
Planetary Shaft Pins The pins should be marked on the end. Use a metal marking pen.

Illustration 43	g01820841
Wheel Bearings The bearing cage should be marked in the location that is opposite to the trademark. Use a metal marking pen.

Illustration 44	g01820854
Planetary Carriers Mark the carrier on the top deck in an area that does not wear. Use an air engraver.

Illustration 45	g01820859
Sun Gears Mark the sun gear on the side. If there is any load on an area, do not mark the part in this area. Use a metal marking pen.

Illustration 46	g01820864
Ring Gears Mark the ring gears on the side in an area that does not wear. Use an air engraver.

Differential and Bevel Gear Group

Illustration 47	g01820865
Spider Mark the spider on the ends. Use an air engraver or a metal marking pen.

Illustration 48	g01820866
Bevel Gear Mark the gears on the rear heel of the gear teeth. Use an air engraver or a metal marking pen.

Illustration 49	g01820868
Bearings Mark the bearing cage opposite the trademark. Use a metal marking pen.

Illustration 50	g01820870
Housings Mark the housings on a surface that does not wear. This surface should be near the part number. Use an air engraver.

Illustration 51	g01820876
Housings Mark the housings on a surface that does not wear. This surface should be near the part number. Use an air engraver.

Torque Converter

Illustration 52	g01820879
Yoke Mark the yoke in an area that does not wear. Use an air engraver.

Illustration 53	g01820881
Distributor Mark the distributor on a surface that does not wear. Use an air engraver.

Illustration 54	g01820884
Output Shaft Mark the shaft on the end or another area that does not wear. Use an air engraver or a metal marking pen.

Illustration 55	g01820916
Carrier Stator Mark the stator in an area that does not wear. Use a metal marking pen.

Illustration 56	g01820919
Impeller Converter Mark the impeller on a surface that does not wear. Use an air engraver or a metal marking pen.

Illustration 57	g01820921
Stator Converter Mark the stator on a surface that does not wear. Use a metal marking pen.

Illustration 58	g01820923
Turbine Converter Mark the turbine on a surface that does not wear. Use an air engraver or a metal marking pen.

Illustration 59	g01820925
Rotating Housing Mark the housing on a surface that does not wear. Use an air engraver or a metal marking pen.

Illustration 60	g01820934
Clutch Housing Assembly Mark the housing on a surface that does not wear. Use an air engraver or a metal marking pen.

Illustration 61	g01820936
Torque Converter Housing Assembly Mark the top of the housing assembly on a surface that does not wear. Use an air engraver.