PRODUCT SUPPORT PROGRAM FOR REPLACING FAILED CYLINDER HEADS ON CERTAIN 3412C ENGINES USED IN MARINE APPLICATIONS
Usage:
SEBE8132
August 30, 2002
U-226
A-158
AU-170
S-170
H-168
O-185
TM-6
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| After failure only |
PRODUCT SUPPORT PROGRAM FOR REPLACING FAILED CYLINDER HEADS ON CERTAIN 3412C ENGINES USED IN MARINE APPLICATIONS |
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PS50524
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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.
TERMINATION DATE
August 31, 2004PROBLEM
Intake and exhaust valves may fail or wear out prematurely on certain 3412C Marine Engines. In these cases, the cylinder heads can be replaced.AFFECTED PRODUCT
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| Model | Identification Number |
| 3412C |
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PARTS NEEDED
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Qty |
Part Number | Description |
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7E7312 | Gasket Head |
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10R0761 | Head Gp Cylinder |
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1006889** | Bridge-Valve |
* Quantity listed is for one engine.
** Valve bridges are only required for engines that have serial numbers less than 3JK00875.
ACTION REQUIRED
Replace both heads on the failed engine and the sister engine with reman components.SERVICE CLAIM ALLOWANCES
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Product smu/age whichever comes first |
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Parts |
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0-60 mos |
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61-72 mos |
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73-84 mos |
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PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.Attach. (1-Rework Procedure)
Rework Procedure
- Ensure that the correct valve mechanism group is installed when completing this program. Effective with serial number 3JK00875, the valve mechanism groups include valve bridges that do not ride on dowels. Refer to Engine News SEBD9258 for a detailed description.
- Prior to starting job, refer to SENR5534 "Disassembly & Assembly 3408 & 3412 High Performance Marine Engines". This document will provide detailed instructions for the removal and installation of the cylinder head as well as special tools that are required.
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