ISO 8643:2017 PDF

Scope: This document establishes 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. It is applicable to the lowering control devices of hydraulic excavators and the backhoe equipment of backhoe loaders used for obj ect handling which are equipped with the s tandard linkage as defined by the manufacturer. On machines where alternative linkage combinations are offered, only the s tandard length defined by the manufacturer is subj ect to tes ting.

ISO 8643:2017 Referenced Document

ISO 10567:2007 Earth-moving machinery - Hydraulic excavators - Lift capacity
ISO 1219-1:2012 Fluid power systems and components - Graphical symbols and circuit diagrams - Part 1: Graphical symbols for conventional use and data-processing applications
ISO 1219-2:2012 Fluid power systems and components - Graphical symbols and circuit diagrams - Part 2: Circuit diagrams
ISO 6016:2008 Earth-moving machinery - Methods of measuring the masses of whole machines, their equipment and components
ISO 6165:2012 Earth-moving machinery - Basic types - Identification and terms and definitions
ISO 9248:1992 Earth-moving machinery; units for dimensions, performance and capacities, and their measurement accuracies

2017 ISO 8643:2017 Earth-moving machinery - Hydraulic excavator and backhoe loader lowering control device - Requirements and tests
1997 ISO 8643:1997 Earth-moving machinery - Hydraulic excavator and backhoe loader boom-lowering control device - Requirements and tests
1988 ISO 8643:1988 Earth-moving machinery; hydraulic excavator and backhoe loader boom lowering control device; requirements and tests