Hydraulic Excavator (HYEX) 12N Practice Exam - Study Guide & Prep

The function that the Hydraulic Crushing Attachment (Crush-All) does not perform is excavation. The Crush-All is designed primarily for crushing materials, such as concrete and other hard substances, rather than digging or excavating the ground. Excavation typically involves removing soil, rock, or other materials from a site, which is the primary function of an excavator's digging bucket.

While the Crush-All may be mounted on an excavator, its specialization is in crushing and recycling materials, not in the act of digging into or removing earth. The loader function pertains to the ability to lift and transport materials, which is also outside the primary role of the Crush-All. The hopper function relates to the attachment's ability to receive materials to be processed. Therefore, the attachment’s capabilities center on crushing, material handling, and possibly feeding operations, rather than excavation.