The 521-5433 Fuel Pump Gp May Fail on Certain 3500 Industrial Engines {1256} Caterpillar

Engine

3512E (S/N: BZ31-UP; SK31-UP; SK51-UP)

Pumper

SPF743 (S/N: MLX1-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

The 521-5433 Fuel Pump Gp may deteriorate causing debris to collect in the screen which can lead to pump failure.

Solution

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Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.

If the 521-5433 Fuel Pump Gp fails, use the procedure below.

1. Replace the previous failed fuel pump with the 574-0991 Fuel Pump Gp.

2. Replace the engine oil filters with new filters and replace the engine oil.

   Note: Use only Cat engine oil filters or filters with the same specifications as 275-2604 Engine Oil Filter. Do not use oil filters that are designed with an internal bypass.