ISO INTERNATIONAL STANDARD 10998 Second edition 2008-06-01 Agricultural tractors Requirements for steering Tracteurs agricoles — Exigences relatives a la conduite Reference number ISO 10998:2008(E) @ISO2008 ISO10998:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF fle can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTEDDOCUMENT ?ISO2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ ISO 2008 - All rights reserved ISO 10998:2008(E) Contents Page Foreword 1 Scope 2 Normative references 3 Terms and definitions... 3.1 General terms.. 3.2 Steering parameters. 3.3 Types of steering equipment 3.4 Types of steering transmission. 4 General provisions for testing. 6 5 Requirements,testproceduresandacceptancecriteria.... 5.1 Predictable response of the tractor .. 5.2 Steering response behaviour.... 5.3 Actuating forces/reaction forces. 5.4 Simulation of failures (increased steering forces) 5.5 Energysupply/reserveandwarnings.. 5.6 Adjustment devices/care/maintenance 11 5.7 Strength/durability of components. 11 5.8 Steering systems containing complex electronic control systems .. 12 Annex A (normative) Special requirements to be applied to the safety aspects of complex electronic tractor control systems........ 13 Bibliography. 18 @Iso 2008 -All rights reserved ii