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BS 4639:1987

BS 4639:1987

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The latest, up-to-date edition.

Specification for brakes and braking systems for towed agricultural vehicles

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-03-1987

Publisher

British Standards Institution

Foreword
Committees responsible
Specification
1. Scope
2. Definitions
3. Braking requirements for towed agricultural vehicles
4. Braking requirements for agricultural towing
    vehicles
5. Characteristics and performance of complete braking
    systems
6. Tests and test report
Appendices
A. General conditions for tests
B. Method of testing the braking force of service
    brakes
C. Method of testing the resistance to gravity of
    parking brakes
D. Specimen test report

Performance requirements of the recommended single line hydraulic system. General method of test and service brake procedure.

This British Standard specifies requirements for the brakes and braking systems of towed agricultural vehicles in combination with agricultural towing vehicles (normally agricultural tractors).

It contains braking requirements for the towed vehicle and for the towing vehicle to ensure their compatibility and requirements for the characteristics and performance of the complete braking system.

Conditions of test are given in Appendix A and tests for service brakes and parking brakes are given in Appendix B and Appendix C respectively. A specimen test report is given in Appendix D.

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.

Committee
AGE/32
DevelopmentNote
Supersedes 82/77040 DC and BS 4639(1970) (08/2005) Reviewed and confirmed by BSI, February 2011. (01/2011)
DocumentType
Standard
Pages
14
PublisherName
British Standards Institution
Status
Current
Supersedes

BS AU 138a:1980 Specification for dimensions of \'contact\' type couplings for air pressure braking systems on trailers and semi-trailers and their towing vehicles, and the arrangement of these couplings on articulated and drawbar combinations
ISO 5676:1983 Tractors and machinery for agriculture and forestry — Hydraulic coupling — Braking circuit

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