Problem with Monitoring of the Turbocharger Inlet Temperature for some G3500 A3 Engines{1052, 1408, 7610, 7620} Caterpillar

Engine:

G3508 (S/N: WPN1500-UP)

G3512 (S/N: WPP1506-UP; WPR1511-UP)

G3516 (S/N: WPT1506-UP; WPW1693-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 has been identified below.

Problem

Because of performance improvements for the US Environmental Protection Agency (EPA) Spark Ignited Stationary New Source Performance Standards (NSPS), monitoring of the turbocharger inlet temperature was required in order to ensure durability of the turbocharger. The monitoring is intended to enable alarms and shutdowns for high temperatures. To accommodate the additional data, the software for the Advisor panel was updated with the 317-0579 Monitor Software Gp .

For some G3500 A3 Engines, the Advisor panel displays "****" for the turbocharger inlet temperature.

Solution

G3508 A3 Engines

The G3508 A3 Engines are built with a wiring harness that includes a breakout for the thermocouple at the turbocharger inlet. The Advisor panel is able to correctly display the turbocharger inlet temperature.

G3512 A3 and G3516 A3 Engines

The wiring harnesses for the G3512 A3 and G3516 A3 Engines do not have breakouts for the thermocouples at the turbocharger inlets. Until the features are added to the harnesses, the Advisor panel will display "****" for the turbocharger inlet temperature.