Telehandler Components, Machine Configuration and Attachments
A telehandler is a rough-terrain, variable-reach machine. Its core components are the chassis, the telescopic boom (usually two or three sections extended by hydraulic rams), the attachment carriage or quick-hitch at the boom head, stabilisers or levelling jacks on many models, and a rear-axle or frame-levelling system. The operator must understand the boom extension and lowering rams, the hydraulic system and its pressure, the load-sensing valve or rated capacity indicator (RCI) that warns of overload, and the boom angle and length sensors that feed it. Attachments are interchangeable - forks, buckets, grabs, winches, work platforms, truss booms - but each has its own rated capacity and its own load chart, and fitting one changes the machine's stability and capacity. The quick-hitch must be correctly engaged and the locking pins or mechanism confirmed engaged before lifting.
Question traps: candidates assume a generic 'telehandler capacity' exists, when capacity depends on attachment, boom length and angle. They forget that the RCI is an aid, not a substitute for the load chart. They also confuse the boom extension ram with the lift ram, or assume stabilisers must always be deployed - the load chart states whether the machine is configured 'on wheels' or 'on stabilisers', and capacities differ. Another trap is thinking any attachment can be used on any machine; attachments must be compatible, approved and matched to the machine's hydraulic and load limits.
Worked example: a machine with forks rated 4,000 kg at minimum boom length and full retraction can drop to around 1,000 kg or less at full reach. The number on the attachment plate is only the starting point; the load chart at the actual boom length and angle governs.
Rule of thumb: never lift beyond the figure the chart gives for the exact configuration you are in.