PRODUCT SUPPORT PROGRAM FOR REPLACEMENT OF THE TOP PISTON RING IN CERTAIN G3516E ENGINES Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACEMENT OF THE TOP PISTON RING IN CERTAIN G3516E ENGINES

Usage:

REBE4335-00

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04Sep2008

L120

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Before/After (Limited distribution)	PRODUCT SUPPORT PROGRAM FOR REPLACEMENT OF THE TOP PISTON RING IN CERTAIN G3516E ENGINES
1215 1124 1214 1100		PS42783

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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 "PS42783" 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

30Sep2009

PROBLEM

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Some G3516E engines have shown cylinder liner polishing near the top of the cylinder. The cylinder polishing is not a failure mode. However, heavy cylinder polishing can lead to high oil consumption, increased blowby, and reduced cylinder compression. Oil consumption, blowby, and cylinder compression are determining factors for scheduling an in-frame overhaul. The cylinder liner polishing may lead to an in-frame overhaul interval shorter than specified in the Operation and Maintenance Manual (SEBU7681).

Another possible failure mode is that excessive oil consumption of a particular cylinder, may lead to detonation problems with that cylinder. The detonation is caused by the presence of oil during combustion or increased deposit levels.

AFFECTED PRODUCT

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Model	Identification Number
G3516E	GAS00234, 239, 247-249, 253-255, 257-264

PARTS NEEDED

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Qty	Part Number	Description
16	2997609	KIT-GASKET(SCH)
16	3094046	RING-PSTN-TOP
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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It is required to replace the current top piston ring with the 309-4046 top piston ring on the listed engines before commissioning of the unit.

Refer to the appropriate service manuals as necessary.

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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%
0-100 hrs, 0-12 mo	100.0%	0.0%	0.0%	100.0%	0.0%	0.0%