PRODUCT SUPPORT PROGRAM FOR INSTALLING ADDITIONAL HEAT SHIELDS ON CERTAIN TIER C175-20 LOCOMOTIVE ENGINES Caterpillar

PRODUCT SUPPORT PROGRAM FOR INSTALLING ADDITIONAL HEAT SHIELDS ON CERTAIN TIER C175-20 LOCOMOTIVE ENGINES

Usage:

TEBE6471-00

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31Oct2017

U-594

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Before/After	PRODUCT SUPPORT PROGRAM FOR INSTALLING ADDITIONAL HEAT SHIELDS ON CERTAIN TIER C175-20 LOCOMOTIVE ENGINES
1067		PS45666

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NOTE:

Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.

NOTE:

This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS45666" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

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NOTE:

The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

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TERMINATION DATE

31Oct2019

PROBLEM

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The existing heat shields do not protect the NOx sensor and ECU appropriately on certain C175-20 Locomotive Engines. If the existing heat shields remain in place it can/will cause the NOx sensor and ECU to overheat and fail.

AFFECTED PRODUCT

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Model	Identification Number
C175-20	R4F00100-00141

PARTS NEEDED

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Qty	Part Number	Description
4	8T4971	BOLT
4	9Y5289	SPACER
4	2321473	WASHER
2	5278582	BRACKET
1	5391402	INSULATION AS
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 32% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.

ACTION REQUIRED

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Refer to the attached Rework Procedure.

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SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-6000 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 4.0-hour job

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PARTS DISPOSITION

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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Rework Procedure

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Remove the highlighted aftertreatment hatches.

Image1.1.1

Adding Insulation Behind Electrical Box

Image1.2.1

Remove tie strap (290-1993) to allow clearance for insulation to slide behind electrical box.

Image1.3.1

Remove 4 bolts, 4 washers, 8 spacers that attach sensor box to front face of CEM (retain hardware) and pull away the sensor box from the CEM.

Image1.4.1

Add loose insulation (539-1402) behind electrical box.

Insulation should be pressed flush against the CEM studs.

Sheet metal side should be facing outward.

Image1.5.1

Reassemble unit in reverse order. Best practice is to start all bolts prior to tightening the bolts.

Replace the cover around inlet NOx sensor probe.

Image1.7.1

Remove complete cover group.

Do not reuse the (2) 488-1796 Plates, (4) 232-1473 Washers, (4) 8T-4970 Bolts.

Image1.8.1

Image1.8.2

Install Rear Cover: Utilize the existing weldnuts on the insulation panel, bolt the cover assembly carefully around the installed NOx sensor. (Do not drop loose parts into the opening)

Tighten bolts to 12 Nm.

Image1.9.1

Image1.9.2

Install Front Cover: Leveraging the existing weldnuts on the insulation panel, bolt the cover assembly carefully around the installed NOx sensor. (Do not drop loose parts into opening).

Tighten bolts to 12 Nm.