The Spark Plugs May Need To Be Replaced In Certain G3304, G3306, G3406, G3408 And G3412 Engines Caterpillar

NOTE: This Program must be administered as soon as possible. When reporting the repair, use "PI1227" 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 "PI1227" as the Part Number, "7751" as the Group Number, "96" as the warranty Claim Description Code, and " Z" as the SIMS Description Code.

NOTE: Although this Program is to be administered as described above on the Affected Product, parts should be removed from parts stock as soon as possible.

Problem

The ceramic portion of some 2N2839 Spark Plugs may come loose and be ejected from the combustion chamber of certain G3304, G3306, G3406, G3408 and G3412 Engines. This could result in potential injury or death.

Affected Product
Model & Identification Number

G3304 (37Y2121-2222)

G3306 (07Y4245-4400)

G3406 (4FD377-435)

G3408 (6NB1015-1059)

G3412 (7DB818-850)

Parts Needed

Dealers will need to order parts for this Program.

1 - 2N2839 Spark Plug (for each cylinder of the engine)

Action Required

Parts Stock

Remove all 2N2839 Spark Plugs from parts stock with a date code of 2J or 2K stamped near the base as shown in the illustration below.

Affected Product

Inspect the existing 2N2839 Spark Plugs to determine their date code. If the date code is a 2J or 2K, remove the existing spark plugs and replace them with new 2N2839 Spark Plugs.

NOTE: Engines other than those listed under the AFFECTED PRODUCT section of this program may qualify for rework under this program. If an engine has had new 2N2839 Spark Plugs installed during a maintenance interval since November of 1992, it should be inspected as mentioned above.

Owner Notification

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

Service Claim Allowances

Parts Stock

Submit one claim for all 2N2839 Spark Plugs removed from parts stock.

NOTE: US and Canadian Dealers Only - When submitting a parts stock claim use 99Z00007 in the Product Identification Number Field.

Affected Product

G3304, G3306 And G3406 Engines

NOTE: This is a 1-hour job.

G3408 Engines

NOTE: This is a 1.2-hour job.

G3412 Engines

NOTE: This is a 1.5-hour job.

Parts Disposition

U.S. And Canadian Dealers

Return all 2N2839 Spark Plugs removed from parts stock and from engines to:

All Other Dealers

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

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

Attach. (1-Owner Notification)

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