Standard
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AS ISO 8643:2020
[Current]Earth-moving machinery — Hydraulic excavator and backhoe loader lowering control device — Requirements and tests
Identically adopts ISO 8643:2017, establishing uniform requirements and test procedures for lowering control devices fitted on the boom, intermediate boom and arm cylinders of hydraulic excavators and backhoe loaders to control the rate of drop in the case of a hydraulic line failure or rupture.
Published: 13/11/2020
Pages: 11
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Lowering control device requirements
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.1.7
4.1.8
5 Test method
5.1 Apparatus
5.1.1
5.1.2
5.1.3
5.2 Preparation for test
5.2.1
5.2.2
5.2.3
5.3 Testing of lowering control device
5.3.1 General
5.3.2 Testing of internal leakage
5.3.3 Testing of holding position
5.3.4 Testing during raising
5.3.5 Testing during lowering
5.3.6 Testing of equalizing lines or signal lines
5.3.6.1
5.3.6.2
5.3.6.3
5.3.6.4
Bibliography
Cited references in this standard
[Current]
Earth-moving machinery - Units for dimensions, performance and capacities, and their measurement accuracies
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