PRODUCT SUPPORT PROGRAM FOR REPLACING OUTER VALVE SPRINGS ON CERTAIN C-12 INDUSTRIAL ENGINES Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING OUTER VALVE SPRINGS ON CERTAIN C-12 INDUSTRIAL ENGINES

Usage:

REBE3770-00

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12May2008

L240
L262

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Before/After (Limited distribution)	PRODUCT SUPPORT PROGRAM FOR REPLACING OUTER VALVE SPRINGS ON CERTAIN C-12 INDUSTRIAL ENGINES
1100 1108		PS42689

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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 "PS42689" 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

31May2010

PROBLEM

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The existing outer valve spring can fail on certain C-12 Industrial Engines. If the existing outer valve spring fails it can cause the valve to contact the piston.

AFFECTED PRODUCT

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Model	Identification Number
C-12	BDL05523-05532, 5547-5551, 5554-5555, 5558-5559, 5561-5565, 5567-5570, 5572-5573

PARTS NEEDED

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Qty	Part Number	Description
3	5P5678	SEAL
6	9X7317	SEAL-FUEL SYSTEM
6	1198784	SEAL-FUEL SYSTEM
24	2140586	SPRING -VALVE
6	2153198	SEAL-FUEL SYSTEM
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 18% 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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NOTE: It is recommended to work each cylinder one at a time to prevent the valve from dropping into the cylinder. Using the 4C-6726 Service Tool will allow the rework to be done without removing the cylinder head from the engine.

1. Remove the valve covers.

2. Remove the rocker shaft hold down bolt.

3. Remove the entire rocker shaft, injector rocker arm, intake rocker arm, exhaust rocker arm, and valve bridges.

4. Remove the injector hold down bolt and remove the injector.

5. Roll the cylinder being reworked to Top Dead Center (TDC) to prevent the valves from dropping into the cylinder.

6. Use the 4C-6726 Service Tool to compress the valve springs.
- CAUTION: Do not let the valve drop into the cylinder.

7. Remove the valve keepers and the rotocoils after the springs are compressed.

8. Slowly release the service tool and remove the outer valve spring.

9. Replace all four outer valve springs with new 214-0586 Springs and reassemble.

10. Repeat the steps 2 - 9 on the remaining 5 cylinders. Be sure to roll each cylinder up to TDC prior to compressing the springs and removing the keepers.

11. Reset the valve lash and injector height after all six cylinders are reworked.

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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%
0-10000 hrs, 0-48 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%