New Aftercooler Cover Needs To Be Installed On Certain 3412 SI Engines Caterpillar


New Aftercooler Cover Needs To Be Installed On Certain 3412 SI Engines

Usage:

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Caterpillar: Confidential Yellow

NOTE: This Program must be administered as soon as possible. When reporting the repair, use "PI3562" as the Part Number, "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 "PI3562" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

NOTE: This Revised Service Letter replaces the December 26, 1991 Service Letter. Changes were made to the Parts Needed. All engines that had the three 4L6454 Bolts installed prior to this revision need to have those three bolts replaced with three 5S7379 Bolts.

Problem

The aftercooler cover may crack or break on certain 3412 SI Engines if excessive pressure occurs. A new aftercooler cover needs to be installed on these engines.

Affected Product
Model & Identification Number

3412 SI (7DB306, 7DB307, 7DB312, 7DB313, 7DB335, 7DB336, 7DB469, 7DB474, 7DB475, 7DB489, 7DB496, 7DB526-687;3NK1-58)

Parts Needed

Dealers will need to order parts for this Program.

24 - 5M2894 Washer
1 - 4P7331 Plate
1 - 4P7532 Cover
1 - 4P7533 Gasket
3 - 5S7379 Bolt

Action Required

Parts Stock

Remove all 4P3029 Covers and 4P3031 Elbows from parts stock.

Affected Product

Remove the existing aftercooler cover and elbow. Replace them with the new Cover, Plate, Gasket, and associated hardware.

Owner Notification

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

Service Claim Allowances

Parts Stock

Submit one claim for all 4P3029 Covers and 4P3031 Elbows removed from parts stock.

Affected Product

NOTE: This is a 1-hour job.

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.

Attach. (1-Owner Notification)

Copy Of Owner Notificaiton For U.S. And Canadian Owners

Caterpillar Information System:

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