ISO INTERNATIONAL STANDARD 7308 First edition 1987-12-15 INTERNATIONALORGANIZATIONFORSTANDARDIZATION ORGANISATION INTERNATIONALEDE NORMALISATION ME>KAYHAPOAHAAOPAHM3ALMHOCTAHAAPTW3AMM Road vehicles -- Petroleum-based brake-fluid for stored-energy hydraulic brakes Vehicules routiers - Liquide de frein a base petroliere pour dispositifs de freinage a centrale hydraulique Referencenumber ISO 7308:1987 (E) Copyright International Organization for Standardization No reproductic er networking permited without license from IHS Not for Resale 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 right to be represented on that committee. International organizations, govern- mental and non-governmentai, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard 1SO 7308 was prepared by Technical Committee ISO/T 22, Road vehicles. latest edition, unless otherwise stated. International Organization for Standardization, 1987 Printed in Switzerland rovided by IHS under license with Not for Resale ISO 7308 : 1987 (E) Contents Page Scopi 2 Field of application 3 References 4 Definition 5 Materials 6 Requirements 6.1 Boiling point 6.2 Viscosity 2 6.3 Waterconten 2 6.4 Fluidity and appearance at low temperatures 2 6.5 Hygroscopicity 2 6.6 Foaming. 2 6.7 Compatibility 2 6.8 Effectonrubbe 2 6.9 Performanceundersimulatedservice 2 6.10 Corrosior 3 6.11 Shear stability 3 6.12 Anti-wear stability 3 Test methods 3 7.1 Boiling point 3 7.2 Viscosity 3 7.3 Waterconten 7.4 Fluidity and appearance at low temperatures 7.5 Hygroscopicity 7.6 Foaming. ii No reproduction or networking permitted without license from IHS Not for Resale