2007/07/30 Caterpillar

Generator Set:

C18 MARINE GS (S/N: CYN1-UP)

Marine Engine:

3406E MARINE (S/N: 9WR1-UP)

C18 MARINE (S/N: CKH1-UP; C1J1-UP)

C15 MARINE (S/N: RLA1-UP)

An update has occurred to the Maintenance Interval Schedules in the documents that are listed below.

• Operation and Maintenance Manual, SEBU7005, "Maintenance Interval Schedule"

• Operation and Maintenance Manual, SEBU7689, "Maintenance Interval Schedule"

• Operation and Maintenance Manual, SEBU7917, "Maintenance Interval Schedule"

In the Maintenance Interval Schedule under Every 3000 Service Hours, the schedule says to replace the aftercooler core. This is no longer needed. Now replace the aftercooler when replacement is required. For more information refer to Operation and Maintenance Manual, SEBU7005, "Maintenance Interval Schedule", Operation and Maintenance Manual, SEBU7689, "Maintenance Interval Schedule", and Operation and Maintenance Manual, SEBU7917, "Maintenance Interval Schedule".