Low Oil Pressure Shutdowns upon Cold Start-Ups for C175 Engines {0645, 1000} Caterpillar

Generator Set

C175-16 (S/N: WYC1-UP)

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

Off Highway Truck

793F (S/N: SND1-UP; SSP1-UP)

795F AC (S/N: ERM1-UP)

797F (S/N: LAJ1-UP; WSP1-UP)

Petroleum Engine

C175-16 (S/N: P6L1-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

When the engine oil temperature is less than 15° C (60° F), the C175 engine shuts down due to low oil pressure within 30 seconds of start-up.

Solution

Use the following methods to help avoid the shutdown:

• Install an oil heater to warm the oil in the pan to a temperature above 15° C (60° F).

• Replace the CJ-4 oil with the CI-4 that is more capable of flowing under cold conditions.

For information and for part numbers for CI-4 oil, refer to Information Release Memo, PELJ0212, "Cat^® DEO^TM (Diesel Engine Oil) CI-4 Multigrade". The memo is available from the Global Sales Library at gsl.cat.com.

Note: C175 Engines require 40 weight oil.

• For cold-weather applications, use Cat DEO-ULS SYN 5W-40. Refer to Information Release Memo, PELJ0974, "CAT DEO-ULS SYN Full Synthetic Diesel Engine Oil SAE 5W-40" for oil specifications.

Cat DEO-ULS SYN 5W-40 has been reformulated for Canada and the USA. The new formula does not have the issue with plugging of the oil filter.

Use of the Cat DEO-ULS SYN 5W-40 does not require other supplemental corrective actions to address the low oil pressure issue.

For more information, refer to the following publications that are available at the Global Sales Library:

• Information Release Memo, PELJ1441, "Canada Only - Formulation Change for Cat^® DEO-ULS^TM 15W-40"

• Information Release Memo, PELJ1442, "US and Canada Re-Release of Cat^® DEO-ULS^TM SYN 5W-40"