ISO 8643:1997
Earth-moving machinery - Hydraulic excavator and backhoe loader boom-lowering control device - Requirements and tests

Standard No.

ISO 8643:1997

Release Date

1997

Published By

International Organization for Standardization (ISO)

Status

Be replaced

Replace By

ISO 8643:2017

Latest

ISO 8643:2017

Scope

This International Standard establishes uniform requirements and test procedures for boom-lowering control devices fitted on boom-lift cylinders to control the rate of drop in the case of a hydraulic line failure or rupture. This International Standard applies to boom-lowering control devices on hydraulic excavators and the backhoe part of backhoe loaders, when used for handling and lifting objects.

ISO 8643:1997 history

• 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