Risk of High-Pressure Water Entering The Service Tool Connector on 3500B Locomotive Engines{0785, 1408} Caterpillar

Engine:

3508B (S/N: 5PS1-UP)

3512B (S/N: PWG1-UP; 3ZW1-UP)

3516B (S/N: BCK1-UP)

Introduction

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

Problem

High-pressure wash water can penetrate wiring harness braids and collect in the cap of the Cat ET service connector causing pin corrosion.

Illustration 1	g02475361
Problematic (face down) position for the connector (1) Cat ET connector

Illustration 2	g02475395
Example of corroded connector

Solution

Remove the Cat ET connector cap and drain any water that may have collected. Dry the connector thoroughly and clean any corrosion from connector pins.

Illustration 3	g02475381
Example of clean connector

Use tie straps to secure the connector in a (face up) position.

Illustration 4	g02475281
Recommended (face up) position for the connector