ISO INTERNATIONAL STANDARD 7654 Third edition 1998-09-15 Road vehicles Spin-on fuel filters for diesel engines Mounting and connecting dimensions Véhicules routiers Filtres a combustible vissés pour moteurs diesels- Dimensions de montage et de raccordement ISO Reference number ISO 7654:1998(E) by IHS under lic itted without license from IHS Not for Resale ISO 7654:1998(E) Foreword IsO (the International Organization for Standardization) is a worldwide federationofnationalstandardsbodies(lsOmemberbodies).Theworkof preparing International Standards is normally carried out through isO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non- governmental, in liaison with ISO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (lEC)onallmattersofelectrotechnicalstandardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 7654 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 7, Injection equipment and filters for use on road vehicles. This third edition cancels and replaces the second edition (SO 7654:1991), which has been technically revised. Annex A forms an integral part of this International Standard. Annex B is for information only. @ISO1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. InternationalOrganizationforStandardization Casepostale56·CH-1211Geneve20·Switzerland Internet [email protected] Printed in Switzerland t license from IHS Not for Resale INTERNATIONAL STANDARD @ ISO ISO 7654:1998(E) Road vehicles Spin-on fuel filters for diesel engines - Mounting and connecting dimensions 1 Scope This international Standard specifies the mounting and connecting dimensions for spin-on fuel filters, with and without an inner sealing, to be used with diesel (compression-ignition) engines. The preferred design of spin-on fuel filters are those without an inner sealing, and they are specified in clause 2. The alternative filter design is specified in annex A and should be used if an inner sealing is required. The corresponding filter heads are specified in ISO 7310, ISO 7311 and ISO 7577 (see annex B), 2 Dimensions and tolerances Details not specified in this International Standard are left to the manufacturer's choice. 2.1 The dimensions and tolerances of the filter shall be in accordance with figure 1. The shape of the sealing ring shown in X shall be such that effective sealing is ensured. The dimensions of the compressed sealing ring shall be within the sealing surface shown in figure 2. manufacturer's recommendations. In cases where moulded sealing rings are used, this dimension may be O; i.e. This special design shall be identified on the filter with necessary fitting instructions. 2.2 The dimensions and tolerances of the sealing surface and connecting thread shall be in accordance with figure 2. 3 Marking Spin-on fuel filters may optionally be marked as follows: b) size of connecting thread, for example, M16 × 1,5; c) instructions for installation. The appearance and position of this marking on the filter body are left to the discretion of the manufacturer. Copyright Interr onal Organization for Standardization