scope:

This document provides criteria for construction, establishes performance test methods and defines acceptance criteria for telescopic mechanical screw-type drawbar jacks and hydraulic drawbar jacks intended to be fitted on the drawbar of interchangeable towed machinery (as defined in ISO 12934) and hereafter referred to as "implement(s)"as original equipment or as replacement jacks. In addition, it specifies minimum markings and information for use to be provided by the jack manufacturer. These jacks are used specifically for - supporting the hitch points of implements during storage; - lifting and lowering of implement tongues to facilitate attaching to or disconnecting from an agricultural tractor; and - levelling of machinery for stationary use.