PRODUCT IMPROVEMENT PROGRAM FOR TIGHTENING VIBRATION DAMPER FASTNERS ON CERTAIN C18 MARINE ENGINES OPTIONALLY EQUIPPED WITH EITHER 209-3603 OR 309-5588 DAMPER GROUPS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR TIGHTENING VIBRATION DAMPER FASTNERS ON CERTAIN C18 MARINE ENGINES OPTIONALLY EQUIPPED WITH EITHER 209-3603 OR 309-5588 DAMPER GROUPS

Usage:

REBE4377-00

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23Sep2008

U-491

A-404

D-412

O-451

TM-24

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*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR TIGHTENING VIBRATION DAMPER FASTNERS ON CERTAIN C18 MARINE ENGINES OPTIONALLY EQUIPPED WITH EITHER 209-3603 OR 309-5588 DAMPER GROUPS
1205 1207		PI31562

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NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI31562" as the Part Number and "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. Exception: If the repair is done after failure, use "PI31562" as the Part Number, "7751" as the Group Number, "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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COMPLETION DATE	TERMINATION DATE
31Mar2009	30Sep2009

PROBLEM

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The vibration damper bolts/nuts need to be set to the proper torque on certain C18 marine engines with optional front accessory drive. These fastners were improperly tightened when the engine was assembled.

AFFECTED PRODUCT

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Model	Identification Number
*****Group 1*****
C18	T2P00205-00206 WKB00101, 107, 112-113, 118, 120-121, 182, 220

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*****Group 2*****
C18	T2P00120, 126, 130, 136, 143 WKB00102, 132, 135, 142-143, 152, 176-177, 179-180, 185, 187

PARTS NEEDED

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No parts needed for this program

ACTION REQUIRED

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Refer to the appropriate Service Manual as necessary for proper tightening procedure.

NOTE: An engine rotating tool may be required to hold the crankshaft from rotating while tightening the fastners.

Tighten the fasteners on the vibration damper to the appropriate torque specifications shown in Image1 and Image2.

For engines in Group 1 of the affected product, tighten fastners to the torque shown in Image1.

For engines in Group 2 of the affected product, tighten fastners to the torque shown in Image2.

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Image1

Image2

OWNER NOTIFICATION

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U.S. and Canadian owners will receive the attached Owner Notification.

SERVICE CLAIM ALLOWANCES

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Caterpillar		Dealer Suggested		Customer Suggested
Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
*****Group 1*****
100%	100%	0%	0%	0%	0%

NOTE: This is a 2.0-hour job for Group 1

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Caterpillar		Dealer Suggested		Customer Suggested
Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
*****Group 2*****
100%	100%	0%	0%	0%	0%

NOTE: This is a 4.0-hour job for Group 2

PARTS DISPOSITION

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

MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.

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COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR TIGHTENING VIBRATION DAMPER FASTNERS ON CERTAIN C18 MARINE ENGINES OPTIONALLY EQUIPPED WITH EITHER 209-3603 OR 309-5588 DAMPER GROUPS

MODELS INVOLVED - C18 Commercial Marine Engines

Dear Caterpillar Product Owner:

The vibration damper fastners need to be tightened to the appropriate torque on the products listed below. The fastners were improperly tightened during assembly. You will not be charged for the service performed.

Contact your local Caterpillar dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service.

Please refer the dealer to their Service Letter dated 23Sep2008 when scheduling this service.

We regret the inconvenience this may cause you, but urge you to have this service performed as soon as possible to prevent unscheduled downtime.

Caterpillar Inc.

Identification #(s)

Attached to 23Sep2008 Service Letter