Operation and Maintenance Manual: Cummins QSB4.5 and QSB6.7 Engines (EN)

Operation and Maintenance Manual QSB4.5 and QSB6.7 Engine Cummins Customer Assistance Center 1-800-DIESELS TM ( 1-800-343-7357 ) APPLICABLE ONLY IN U.S.A. AND CANADA

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Foreword This manual contains information for the correct operation and maintenance of your Cummins engine. It also includes important safety information, engine and systems specifications, troubleshooting guidelines, and listings of Cummins Authorized Repair Locations and component manufacturers. Read and follow all safety instructions. Refer to the WARNING in the General Safety Instructions in Section i - Introduction. Keep this manual with the equipment. If the equipment is traded or sold, give the manual to the new owner. The information, specifications, and recommended maintenance guidelines in this manual are based on information in effect at the time of printing. Cummins Inc.

reserves the right to make changes at any time without obligation. If you find differences between your engine and the information in this manual, contact your local Cummins Authorized Repair Location or call 1-800-DIESELS (1-800-343-7357) toll free in the U.S. and Canada. The latest technology and the highest quality components were used to produce this engine. When replacement parts are needed, we recommend using only genuine Cummins or ReCon® exchange parts. NOTE: Note: Warranty information is located in Section W. Make sure you are familiar with the warranty or warranties applicable to your engine.

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Table of Contents Section Introduction ........................................................................................................................................................ i Engine and System Identification .................................................................................................................... E Operating Instructions ...................................................................................................................................... 1 Maintenance Guidelines ....................................................................................................................................

2 Maintenance Procedures at Daily Interval ...................................................................................................... 3 Maintenance Procedures at 250 Hours or 3 Months ...................................................................................... 4 Maintenance Procedures at 500 Hours or 6 Months ...................................................................................... 5 Maintenance Procedures at 1000 Hours or 1 Year ......................................................................................... 6 Maintenance Procedures at 2000 Hours or 2 Years .......................................................................................

7 Maintenance Procedures at 5000 Hours or 4 Years ....................................................................................... 8 Adjustment, Repair, and Replacement ............................................................................................................ A System Diagrams .............................................................................................................................................. D Service Literature ..............................................................................................................................................

L Service Assistance ............................................................................................................................................ S Troubleshooting Symptoms ............................................................................................................................. TS Maintenance Specifications .............................................................................................................................. V Warranty .............................................................................................................................................................

W Back .................................................................................................................................................................... back

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Important Reference Numbers Fill in the part name and number in the blank spaces provided below. This will give you a reference whenever service or maintenance is required. Name Number Number Engine Model Engine Serial Number (ESN) Control Parts List (CPL) Fuel Pump Part Number Electronic Control Module (ECM) Electronic Control Module Serial Numbers (ECM) Filter Part Numbers: • Air Cleaner Element • Lubricating Oil • Fuel • Fuel-Water Separator • Coolant • Crankcase Ventilation • Cummins Particulate Filter Governor Control Module (GCM) (if applicable) Belt Part Numbers: • • • Clutch or Marine Gear (if applicable):

• Model • Serial Number • Part Number • Oil Type • Sea Water Pump - Model - Part Number

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