ES_OM651.book (EN)

Inner title

Mercedes-Benz Service Introduction of New Generation of 4-Cylinder Inline Engines, OM 651 Daimler AG · Technical Information and Workshop Equipment (GSP/OI) · D-70546 Stuttgart – This printout will not be recorded by the update service. Status: 09 / 2008 –

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Information and copyright

Information and copyright Ordering workshop information All printed workshop information from GSP / OI, such as Introduction into Service Manuals, System Descriptions, Function Descriptions, Technology Guides, Tech­ nical Data Manuals and adhesive labels, can be ordered as follows: Within Germany Through our GSP / OI Shop on the Internet Link: http: / / gsp-ti-shop.de or alternatively E-mail: customer.support@daimler.com Phone: +49-(0)1805 / 010-7979 Fax: +49-(0)1805 / 010-7978 Outside Germany Please get in touch with the contact person responsible for your market. Product portfolio You can also find comprehensive information on our complete product portfolio in our Internet portal. Link:

http: / / open.aftersales.daimler.com Questions and suggestions If you have any questions or suggestions concerning this product, please write to us. E-mail: customer.support@daimler.com Fax: +49-(0)18 05 / 0 10-79 78 or alternatively Address: Daimler AG GSP / OIS HPC R822, W002 D-70546 Stuttgart © 2008 by Daimler AG This document, including all its parts, is protected by copyright. Any further processing or use requires the previous written consent of Daimler AG, Department GSP / OIS, HPC R822, W002, D-70546 Stuttgart.

This applies in particular to reproduction, distribution, alteration, translation, microfilming and storage and / or processing in electronic systems, including databases and online services. Image no. of title image: P01.00-3119-00 Order no. of this publication: 6516 1364 02 08 / 2008 – This printout will not be recorded by the update service. Status: 09 / 2008 –

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Contents

Contents Preface 5 Overview Brief description 6 Engine data 7 Highlights 8 Engine views 9 System comparison 10 At a glance 11 Mechanical system Crankcase 12 Cylinder head 13 Oil pan 14 Crankshaft assembly 15 Valve assembly 17 Gear drive 18 Belt drive 19 Combustion Common rail injection 20 Charging 24 Air supply 29 Exhaust system 32 Exhaust system 34 3 Introduction of New Generation of 4-Cylinder Inline Engines, OM 651 q – This printout will not be recorded by the update service. Status: 09 / 2008 –

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Contents

Contents Cooling and lubrication Engine cooling 36 Engine lubrication and oil circuit 38 Oil pump 40 Coolant pump 41 Electrical and electronic systems Engine control unit 42 Glow system 43 Pneumatic system Vacuum control 44 Environmental protection Emission reduction 46 Service information New features 48 Special tools Engine 50 Abbreviations 55 Index 56 4 Introduction of New Generation of 4-Cylinder Inline Engines, OM 651 q – This printout will not be recorded by the update service. Status: 09 / 2008 –

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