Guia Reutilza

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Bienvenido: r080fyc

Producto: TRUCK ENGINE

Modelo: C15 TRUCK ENGINE BXS00043

Configuracin: C15 On-highway Engine BXS00001-UP

Pautas de reutilizacin y recuperacinReuse Guidelines for Divided Turbine Housings{1052, 1065}Nmero de medio -SEBF8966-13 Fecha de publicacin -25/02/2014 Fecha de actualizacin -26/02/2014

Caterpillar: Confidential Yellow

i05684369

Reuse Guidelines for Divided Turbine Housings{1052, 1065}

SMCS - 1052; 1065

Engine: 3400 All, 3300 All, 3200 All, 3100 All, 3000 All, and D-series All All 3500 Engines All

3600 Engines All C280 Engines C-10 All C-9 and C9 All C11 All C12 and C-12 All C13 and C-

13 All C15 and C-15 All C16 and C-16 All C175 Engines C18 and C-18 All C27 All C32 All C4.4

Engines C6.6 C7 All

Introduction

Table 1

RevisionSummary of Changes in SEBF8966

11 - 13 Added new serial number prefixes.

10 1

Added information on cracks in REMAN housings in the "Cracks in the Tongue" section.

09

Added new serial number prefixes.

Added ""Canceled Part Numbers and Replaced Part Numbers" " section.

Added ""Important Safety Information" " section.

06 - 08 Added new serial number prefixes. r080fyc


Pgina 1 de 19C15 On-highway Engine BXS00001-UP(SEBP3722 - 51) - Sistemas y componentes

27/08/2014https://sis.cat.com/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw...

2014 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 in order 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 in order 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 questions or additional information concerning this guideline, submit a form for feedback in the Service Information System. In order to address an urgent issue, use the following resources in order to communicate your request to Caterpillar Repair Process Engineering:

Caterpillar Dealer Technical Communicator

Dealer Solution Network

Caterpillar Technical Representative

Knowledge Network

Canceled Part Numbers and Replaced Part Numbers

This document may not include canceled part numbers and replaced part numbers. Use NPR on SIS 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 g02139237r080fyc




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 in order 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, you must ensure that it is safe for you and for other people to use. You should 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.

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. The "WARNING" safety alert symbol is shown below.

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. r080fyc




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. You must determine that the tools, procedures, work methods, and operating

techniques are safe. You must determine that the operation, lubrication, maintenance, and

repair procedures will not damage the machine. Also, you must 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

Divided turbine housings provide significant benefits to the efficiency and response of turbochargers in the low speed range and middle speed range of the engine. Divided turbine housings are commonly used for engine applications that require a wide range of engine operating speeds. This provides optimum fuel economy and a faster response to engine load.

Cracks will form in the turbine housing from thermal mechanical fatigue during the service life of a turbocharger. An inspection of the turbine housing should be performed. Refer to Operation and Maintenance Manual for guidelines and inspection intervals. Cracks that are found in the following locations of the turbine housing may not be critical: tongue, divider wall and heat shield bore. Use the criteria in this guideline to determine if the turbine housing can be reused. The housing should be replaced if the cracks are not acceptable according to this guideline.

Studies have shown that turbine housings tend to crack in certain areas. Cracks are typically found in the divider wall. This type of crack relieves stresses in the housing. Tests indicate that turbochargers that have cracks in the locations that are listed above can continue to operate. The cracks will not continue to grow and the performance of the turbocharger will not be affected. The cracks are normal and the durability of the turbocharger will not be affected.

Nomenclature of the Turbocharger

The following Illustrations are provided in order to identify turbocharger parts. The reuse information will refer to the various parts that are identified in Illustrations 3 through 5.

r080fycCaterpillar: Confidential Yellow




(1) Compressor Housing

(2) Bearing Housing

(3) Turbine Housing

(4) Divider Wall

(5) Bearing Housing Bore

(6) Inlet Flange





(4) Divider Wall

(5) Bearing Housing Bore

(7) Heat Shield Bore

(8) Exhaust Gas Inlet

(9) Exhaust Outlet


(10) Tongue

(11) Exhaust Gas Inlet

Reuse Information for Cracks in the Turbine Housing

This document discusses cracks that can be found in the following parts of the turbine housing:

Divider wall

Tongue

Heat shield bore

Turbine housing exterior

Exhaust gas inlet flange area




The characteristics of the cracks will determine if the turbine housing can be reused. Refer to the reuse information that is provided in this document.

Cracks in the divider wall


Illustrations 7 and 8 are enlarged from the section above.


Reusable

Typical crack in the divider wall





Reusable

Typical cracks in the divider wall

The turbine housings that are represented in Illustration 7 and Illustration 8 are reusable.

Reuse criteria for cracks in the divider wall of the turbocharger housing:

Do not reuse any housing that has cracks in the divider wall closer than 12 mm (0.5 inch) from each other. Do not reuse any housing that has major cracks or shift in the divider wall. Cracks should only be considered if the following criteria are met.

The crack is continuous through the thickness of the divider wall.

The length of the crack is greater than 5 mm (0.1969 inch).

There is no limit on the number of cracks in the divider wall that are allowed. However, the spacing between cracks must be evaluated. Do not reuse any housing that has cracks in the divider wall closer than 12 mm (0.5 inch) from each other.





Scaling corrosion should not be considered as cracking.

Scaling due to corrosion, or cracks in the layer of corrosion on the divider wall do not count as a radial crack. Illustration 9 shows an example of a scaling corrosion which has the appearance of a crack. Scaling corrosion should not be considered as cracking.

Do not reuse the turbocharger housing if cracks with the following characteristics are found in

the divider wall:

Cracks that cause the divider wall to shift more than 2 mm (0.0787 inch) radially toward the turbine wheel should not be used. Refer to Illustrations 10 and 11.

Cracks that cause the divider wall to distort more than 2 mm (0.0787 inch) axially should not be used. Refer to Illustration 12.

Cracks in the Divider Wall


Do not reuse the turbocharger housing.

Significant radial shift of divider wall






Radial shift of divider wall



Axial shift of divider wall

Cracks in the Tongue







Reusable

Crack in the tongue





Reusable

Crack in the tongue

Reuse criteria for cracks in the tongue of the turbine housing:

There should be no more than one crack in the tongue on each side of the divider wall.

The housing is not reusable if the length of the crack is greater than 20 mm (0.7874 inch).

Note: Reman has a length criteria of cracks that is based on part numbers, so a Remanhousing may have an acceptable crack that is different than what is stated above.

Cracks in the Bore of the Heat Shield







The crack must be less than 20 mm (0.7874 inch) in order to reuse the turbocharger.

Crack in the bore of the heat shield


Reusable

Crack in the bore of the heat shield

Reuse criteria for cracks in the bore of the heat shield:

Cracks in the bore of the heat shield should not have a gap that is greater than 1 mm (0.0394 inch). r080fyc




The length of the crack should not be greater than 20 mm (0.7874 inch).

Exterior Cracks in the Turbine Housing

The following cracks in the turbine housing are not acceptable.

Do not reuse the turbine housing if the following types of cracks are found:

Cracks that are visible on the exterior of the turbine housing should not be used. Refer to Illustrations 19, 20, and 21.

Cracks in the divider wall at the exhaust gas inlet flange should not be reused. Refer to Illustration 22.

Cracks that are Visible on the Exterior of the Turbine Housing



Exterior crack in the inlet flange area






Exterior visible cracks



Exterior crack in the inlet flange area

Cracks in the Flange of the Exhaust Inlet






Crack in divider wall of the exhaust inlet

Reuse Information for Corrosion of the Turbine Housing

Housings with excessive scaling or corrosion on any area of the turbine housing should not be reused. The worst scaling is typically found on the divider wall at the exhaust gas inlet.

Note: Scaling is an indication of higher than normal exhaust gas temperature. Further investigation may be necessary in order to determine the root cause of the scaling.

Scaling occurs as cracks develop in the layers of corrosion. The cracks allow corrosion to flake from the wall of the turbine housing. Thermal expansion and contraction during normal operation can contribute to scaling.

Corrosion of the turbine housing

Scaling and Cracking of the Exhaust Divider Wall






Scaling and cracking of the exhaust divider wall Material is flaking from the corroded area.

Corrosion on the Divider Wall and Interior Housing Surface

Corrosion typically occurs in turbine housings without material that is flaking from the surface. This type of corrosion is acceptable. The surfaces that are shown in Illustration 24 and Illustration 25 are acceptable.

Corrosion Without Material that is Flaking Off of the Housing





Reusable

Corrosion without material that is flaking from the housing


Reusable




Corrosion without material that is flaking from the housing

Corrosion of the surface with material that is flaking from the housing



Corrosion of the surface with material that is flaking off

Severe corrosion that results from higher operating temperatures will result in material that flakes off the surface of the turbine housing. This level of corrosion is unacceptable. The housing should not be reused.

Copyright 1993 - 2014 Caterpillar Inc.

Todos los derechos reservados.

Red privada para licenciados del SIS.

Wed Aug 27 14:55:06 EST 2014

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