Cast Aluminum Stator Wheels for Torque Converters {3101, 3129} Caterpillar

Integrated Toolcarrier

IT38F (S/N: 6FN1-UP; 5DR1-UP)

IT38G (S/N: 7BS1-UP; 1CW1-UP)

IT38G Series II (S/N: JAN1-UP; CSX1-UP)

IT38H (S/N: JNJ1-UP)

IT62G (S/N: AKP1-UP; 6PS1-UP)

IT62G Series II (S/N: AYA1-UP)

IT62H (S/N: M5G1-UP)

Landfill Compactor

All

Load Haul Dump

All

Off-Highway Truck/Tractor

773B (S/N: 63W1-UP)

773D (S/N: NBJ1-UP; 7ER1-UP; 7CS1-UP)

773E (S/N: BDA1-UP; PRB1-UP; ASK1-UP; DJS1-UP)

773F (S/N: EED1-UP; EXD1-UP)

777E (S/N: KDP1-UP)

777G (S/N: T5A1-UP; TNM1-UP; RDR1-UP; T4Y1-UP)

785 (S/N: 8GB1-UP)

785B (S/N: 6HK1-UP)

785C (S/N: 1HW1-UP; APX1-UP; 5AZ1-UP)

785D (S/N: DMC1-UP; MSY1-UP)

789B (S/N: 7EK1-UP)

789C (S/N: 2BW1-UP)

789D (S/N: SPD1-UP; SHH1-UP)

793 (S/N: 3SJ1-UP)

793B (S/N: 1HL1-UP)

793C (S/N: CBR1-UP; 4AR1-UP; ATY1-UP; 4GZ1-UP)

793D (S/N: FDB1-UP)

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

Quarry Truck

773G (S/N: MWH1-UP; JWS1-UP)

775G (S/N: RFM1-UP; MJS1-UP)

Soil Compactor

All

Track-Type Tractor

All

Underground Articulated Truck

All

Wheel Dozer

814 (S/N: 90P1-UP; 14R1-UP)

814B (S/N: 16Z1-UP)

814F (S/N: BGF1-UP; 9DM1-UP)

814F Series 2 (S/N: BXG1-UP)

824B (S/N: 36H1-UP)

824C (S/N: 85X1-UP)

824G (S/N: 4SN1-UP)

824G Series II (S/N: AWW1-UP)

824H (S/N: ASX1-UP)

824K (S/N: 2T21-UP; 2L41-UP)

834 (S/N: 43E1-UP)

834B (S/N: 14B1-UP; 96G1-UP; 7BR1-UP; 92Z1-UP)

834G (S/N: BPC1-UP; 6GZ1-UP)

834H (S/N: BTX1-UP)

854K (S/N: RM31-UP)

Wheel Loader

All Large Wheel Loaders

Introduction

© 2018 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.

Note: This document can be used for reusability inspection of the stator wheels for torque converters.

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, 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.

Show/hide table

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

This guideline provides the procedures necessary to determine the reusability of the stator wheels. Life will vary depending on application, load, lubrication, and environment.

This guideline contains the latest standards of engineering, which will help minimize owning and operating costs. A part is expected to reach the next Planned Component Rebuild (PCR) if the part meets the specifications within this guideline and the part is intended for a similar application. Use this guideline to determine whether a part should be reused. Do not install a part that is not reusable.

Service Letters and Technical Information Bulletins

Tooling and Equipment

Cracks

Cracks are permitted (within limitations) on the corners of the trailing edge of blades. Refer to Illustration 3 that shows the cracks developed in the blades. Cracks that appear to be turning back towards the trailing edge of blades are not permitted. Cracks are not permitted anywhere else on the stator. The permitted length of cracks varies with applications. Refer to Table 3 for crack limitations.

Illustration 3	g02084313
(A) Crack (B) Crack (C) Crack

Refer to the following information for limitations for cracks (A), (B, and) (C).

If crack (A) is more than 25.0 mm (0.98 inch) long, DO NOT USE THIS PART AGAIN.

If crack (B) is less than 25.0 mm (0.98 inch) long and does not turn back toward the trailing edge, OK TO USE THIS PART AGAIN.

If crack (C) is turning back toward the trailing edge. DO NOT USE THIS PART AGAIN.

Always refer to the crack limitations based on application listed in Table 3.

Illustration 4	g02084354
The arrow shows the location of the crack.

Chipping that develops a crack around the blade is permitted. Refer to Illustration 4, OK TO USE THIS PART AGAIN.

Blade Face Erosion

Illustration 5	g02084374
Maximum allowable erosion. OK TO USE THIS PART AGAIN.

Foreign material in the oil can cause pitting and erosion of the blade faces. Excessive erosion can disturb the oil flow pattern in the torque converter and impact the converters efficiency. The erosion that is shown in Illustration 5 is the maximum amount permitted. Do not reuse stators with more erosion.

Surface Cavitation Erosion

Cavitation erosion can occur on the inner surfaces of the stator on which oil passes through. Unlike wear erosion from foreign material, cavitation often appears as voids or cavities in the material at symmetric localized locations in the stator. The Illustrations that follow will provide the reuse guidelines for erosion or cavitation on the inner diameter of the stator.

Illustration 6	g06371095
Stator outer ring with inner diameter erosion. (D) Erosion

The stator has erosion (D) on the inner diameter of the outer ring in Illustration 6, OK TO USE THIS PART AGAIN.

The erosion shown in Illustration 6 will not have a noticeable negative effect to performance or life. 

Illustration 7	g06371211
Stator outer ring with inner diameter erosion. (E) Erosion

The stator has severe erosion (E) on the inner diameter of the outer ring in Illustration 7, DO NOT USE THIS PART AGAIN.

Illustration 8	g06371221
Stator outer ring with inner diameter erosion. (F) Erosion

The stator has severe erosion (F) on the inner diameter of the outer ring in Illustration 8, DO NOT USE THIS PART AGAIN.

Erosion due to cavitation on the inner diameter of the outer ring is acceptable for reuse if the following requirements are met:

• Erosion is not present on any of the blade surfaces.

• Erosion is located 5 mm (0.196 inch) or more from a casting edge or blade surface.

• Erosion is not more than 2 mm deep into the surface.

Erosion due to cavitation is rare in torque converters. Refer to appropriate test and adjust documents for converter inlet and outlet pressures as cavitation is most likely due to a system pressure issue.

Spline Wear

Illustration 9	g02084393
Normal wear

New stators and hubs fit tightly together. However, after a relatively short time, the stator splines have worn slightly and fit loosely on the hub. This normal wear does not affect torque converter operation. Refer to Illustration 9 that shows normal wear. Also, during normal operation, the stator will be loose on the hub because aluminum has a high expansion rate in the hot torque converter oil. Replace the stator only if the maximum diameter between pins exceeds that shown in Table 4.

The small pits covering the splines are normal casting porosity and are not harmful, OK TO USE THIS PART AGAIN.