Proactive Updates of the Auxiliary Cooling System Piping are not Recommended on Certain Commercial Engines{1355, 1380, 1393} Caterpillar

Generator Set:

C18 MARINE (S/N: GBM1-UP; CYN1-UP; GEN1-UP; MGS1-UP)

Marine Engine:

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

C15 MARINE (S/N: RLA1-UP)

C18 MARINE (S/N: WKB1-UP; PLE1-UP; CKH1-UP; C1J1-UP; GES1-UP; KJT1-UP; NAX1-UP; NAY1-UP; J2K1-UP; T2P1-UP)

Petroleum Engine:

C15 PETROLEUM (S/N: Z2C1-UP)

C18 PETROLEUM (S/N: MPE1-UP)

Introduction

The problem that is identified below does not have a known permanent solution. Until permanent solution is known, use the solution that is identified below.

Problem

The new 348-6657 Hose and the 348-7211 Hose called out in Engine News, SEBD9650 can deform and burst causing a seawater or coolant leak.

Solution

In order to reduce the risk of failure proactive updates to the older style 131-8279 Tube As , 193-2444 Tube As , or 239-9966 Tube As are not recommended. These tubes should only be replaced with the 348-6657 Hose or 348-7211 Hose as described in Engine News, SEBD9650 if there is an actual failure of the tube resulting in a leak.