Oil Screens May Crack and Degrade on Certain C175 Commercial Engines {1151, 1162, 1206} Caterpillar

Electric Power Generation

C175-16 GEN SET (S/N: WYB1-UP)

Engine

3512E (S/N: BZ3100-UP; SK31-UP; SK51-UP)

C175-16 (S/N: 3A91-UP; 3B91-UP; M6A1-UP; Y3A1-UP; M6B1-UP; WYC1-UP; P6L1-UP; P6N1-UP; P5P1-UP; P6P1-UP; P6R1-UP; KWT1-UP)

C175-20 (S/N: R4F1-UP; BXR1-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

Illustration 1	g06359872
Cracked/Brittle Oil Screen

Oil screens mounted between the high-pressure fuel pump and mounting adapter have been found highly degraded, brittle, and cracked on certain C175 Commercial Engines. Refer to Illustration 1.

Note: The reference part numbers for C175 Commercial Engines is 459-6534 Filter Screen As.

Solution

Caterpillar^® is aware of the problem. As an interim repair, Caterpillar recommends that the oil screen be replaced with a new oil screen at any time when the High-Pressure Fuel Pump is removed, regardless of reason for pump removal.