ISO INTERNATIONAL 789-7 STANDARD First edition 1991-11-15 Agricultural tractors - Test procedures Part 7: Axle power determination Tracteurs agricoles - Methodes d'essai Partie 7. Determination de la puissance aux roues motrices Reference number ISO 789-7·1991(E) Not for Resale ISO 789-7:1991(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 commiffees Each member body interesfed in a subject for which a technical committee has been established has the right to be represented on that committee International organizations, govern. mentai and non-governmental, in liaison with isO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (lEC) on all matters of efectrotechnicaf standardization Draft International Standards adopted by the technical committees are circuiated to the member bodies for voting Publication as an inter- national Standard requires approval by at ieast 75 % of the member bodies casting a vote International Standard Iso 78g-7 was prepared by Technical Committee iso/TC 23, Tractors and machinery for agriculture and forestry, Sub- Committee sC 2, Common tests iso 789 consists of the foliowing parts, under the generat title Agricul- tural tractors --- Test procedures Part 1: Power tests for power take-off Part 2: Rear three-point linkage lifting capacity 一 -- Part 3: Turning and clearance diameters Part 4: Measurement of exhaust smoke -- Part 5: Partial power PTO -- Non-mechanically transmitted power Part 6: Centre of gravity 1 -- Part 7: Axle power determination Part 8: Engine air cleaner Part 9: Power tests for drawbar Part 10: Measurement of hydraulic power Tractorlimplement interface C ISO1991 Alf rights reserved No part of this publication may be reproduced or utilized in any form s,electronic or mechanical,including photocopying and microfilm,without orbyanymeans permission in writing from the publisher International Organization for Standardization Case Postale 56 · CH-1211 Geneve 20 : Switzerland Printed in Switzerland Not for Resale d without license from IHS ISO 789-7:1991(E) Part 11: Steering capability -- Wheeled tractors Annexes B, C, D and E are for information only oa yfeainal aizaino tandadization No reprouction or networking permited withou license from IHs Not for Resale