ISO INTERNATIONAL STANDARD 11530 First edition 1993-04-15 Road vehicles - Hydraulic jacks . Specifications Véhicules routiers -Crics hydrauliques Spécifications Reference number ISO11530:1993(E) ISO 11530:1993(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of 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 rightto 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 (IEC)on all matters of electrotechnical standardization. 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 avote. International Standard IsO 11530 was prepared by Technical Committee ISO/TC 22, Roadvehicles,Sub-Committee SC 14,Exterior fittings. ISO 1993 All rights reserved. No part of this publication may be reproduced or utlized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without per- mission in writing from the publisher. International OrganizationforStandardization CasePostale56.CH-1211Geneve20:Switzerland Printed in Switzerland INTERNATIONAL STANDARD ISO11530:1993(E) Road vehicles Hydraulic jacks Specifications Scope 3.3 Jacks shall be equipped with a pressure relief valve adjusted to a pressure corresponding to the This International Standard specifies design and rated load, with a tolerance up to + 10 %. Some safety requirements, and test methods for hydraulic means shall be provided to ensure that this valve is jacks for road vehicles, used for changing wheels and tamper-proof. puttingonchains. 3.4 Jacks shall be designed in such a way that an NOTE1 Although these jacks are primarily designed for operator can regulate the lowering speed or stop the useonvehicleswithamaximumtotalcalculatedmassover lowering at any load up to the rated load. 3,5.t, they may still be used on smaller vehicles, e.g. pas- senger cars which have jacking points specifically designed for the use of such jacks. 3.5 Jacks shall have different operating systems for raising and lowering. 2 General requirements 3.6 The connection between the operating handle and the jack shall be designed so that the handle 2.1 On delivery, the surfaces shall be protected cannot slip during operation. Similarly, multiple com- against corrosion, and all movable parts shall be lubri- ponent handles shall be protected against uninten- cated, if necessary. tional disassembly. 2.2 Jacks shall be equipped with a suitable means Testing for refilling with hydraulic fluid. 4.1 Normal operation conditions 2.3 The operating force on the handle shall not be greater than 400 N, measured at the end of the han- 4.1.1 Temperature conditioning dle provided when being operated at the rated load. Store jacks at (50 ± 5) C for 24 h, then at 2.4 The ram or cylinder shall be capable of being (- 20 ± 2) C for 24 h, each in the most unfavourable lowered by a force less than 400 N when the lowering position, as agreed between the supplier and cus- system is operated. tomer. No visible leakage is admissible. 4.1.2 Operation test 3 Safety requirements Place the jack in its operating position on the test rig 3.1 The head of the jack shall have a rough surface shown in figure 1, immediately after each of the con- or be designed in such a way as to counteract any ditioning periods in 4.1.1. tendency of the load to slip off. The projected area of The jack shall be able to lift, through the full stroke a flat head shall be at least 500 mm2, and minimum specified by the manufacturer, the rated load at each di