Reference number
ISO 789-4:1986
© ISO 2026
International Standard
ISO 789-4:1986
Agricultural tractors — Test procedures — Part 4: Measurement of exhaust smoke
Edition 2
1986-10
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Published (Edition 2, 1986)
This publication was last reviewed and confirmed in 2023. Therefore this version remains current.

ISO 789-4:1986

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CHF 67
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Abstract

This second edition cancals and replaces the first edition (1982). This part is the fourth of a series of eight. Specifies a method of measuring the smoke emiited by the engines of tractors operating at a steady speed. Annex A gives characteristics of opacimeters; installation and use of theopacimeter is described in annex B; annex C tabulates reference fuel specifications; annex D includes an specimen test report.

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