PRODUCT SUPPORT PROGRAM FOR REWORKING THE TURBOCHARGER ON CERTAIN 3512B MARINE ENGINES Caterpillar

PRODUCT SUPPORT PROGRAM FOR REWORKING THE TURBOCHARGER ON CERTAIN 3512B MARINE ENGINES

Usage:

REBE9257-01

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05Apr2013

(Revised 08Apr2013)

U-142

A-97

D-122

O-126

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*Before/After*	PRODUCT SUPPORT PROGRAM FOR REWORKING THE TURBOCHARGER ON CERTAIN 3512B MARINE ENGINES
1052 1053		PS43880

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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 "PS43880" 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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NOTE:	This Revised Service Letter replaces the 05Apr2013 Service Letter. A change has been made to the Title.

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TERMINATION DATE

30Apr2015

PROBLEM

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Exhaust leak between bolted joint of turbine housing and cartridge due to insufficient clamping load.

AFFECTED PRODUCT

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Model	Identification Number
3512B	S2M00104-00202

PARTS NEEDED

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Qty	Part Number	Description
8	2N2765	BOLT-HEX FLG HD
8	2N2766	LOCKNUT
4	6V3917	SEAL-O-RING
4	6V5103	SEAL-O-RING
2	1215736	GASKET-TURBO
4	3693229	PLATE-CLAMP
16	3693458	BOLT-HEX FLG HD
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 7% 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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Update the turbine housing with different clamps and bolts. The new clamps and bolts provides a more secure joint between turbocharger cartridge and the turbine housing. 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%
0-7500 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 6.0-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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Refer to Disassembly and Assembly, SENR6564.

1. Remove eight original 188-8617 High Temperature Bolts and two original 188-8618 Clamps from the turbocharger.

2. Separate the turbine housing from the rest of the turbocharger assembly.

3. Counter bore the eight clamp bolt holes in the turbine housing to a depth of 2.5 mm (0.098 inch). The counter bore diameter is 10 mm (0.394 inch). The counter bore can be machined with a 10 mm (0.394 inch) drill or an end mill with a 0.5 mm (0.0197 inch) corner radius.

4. Tap the eight clamp bolt holes with a 3/8 inch - 16 thread tap.

Reassemble the turbocharger using the new 369-3458 High Temperature Bolts and 369-3229 Clamps in place of the hardware removed in Step 1
Note: Apply 5P-3931 Anti-Seize Compound to the threads of the bolts prior to assembly.

5. Fill the cooling system with coolant. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change".

Install the air cleaner. Refer to Disassembly and Assembly, "Air Cleaner - Remove and Install".