Information on the Clean Gas Induction (CGI) Flex Pipe Connection Found Broken in Some 2007 Emissions Compliant Engines{1071, 108N, 5510} Caterpillar

Truck Engine:

C13 (S/N: LEE1-UP)

C15 (S/N: SDP1-UP)

C7 (S/N: C7S1-UP)

C9 (S/N: C9S1-UP)

Introduction

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

Problem

It is important to note that not all of the components of the above listed engines exhaust system are the responsibility of Caterpillar. In particular, the CGI flex coupling is the responsibility of the vehicle OEM.

If the CGI flex connection is lost it may allow unfiltered air into the intake system. If the flex connection fails and allows dirt ingestion into the intake of the engine it may cause turbo damage and internal engine issues.

Solution

It is important to note that the CGI pipe is an OEM part and not a Caterpillar part number.

Caterpillar, Peterbilt and Kenworth recommend that anytime a vehicle is in for service an inspection of the CGI flex coupling be conducted to insure that there are no potential leaks.

Should you find a failure in a CGI connection, closely inspect the intake system and turbochargers for damage. If you have a turbo failure with foreign debris damage, inspect the CGI piping.

Again, if you have a report of a failed CGI pipe Peterbilt or Kenworth need to be immediately informed of the failure and any extended damage. Please contact the appropriate Peterbilt or Kenworth field personnel if a failure has been detected. Peterbilt and Kenworth are addressing this issue with the assembly plants.