An operator is preparing to lift a load of lumber with a telehandler. They notice that the boom is not extending smoothly and makes a grinding noise. What is the MOST likely cause of this issue?

Question: An operator is preparing to lift a load of lumber with a telehandler. They notice that the boom is not extending smoothly and makes a grinding noise. What is the MOST likely cause of this issue?

Answer options:

• Insufficient hydraulic fluid in the reservoir
• Over-extension of the boom sections ✅ Worn or damaged wear pads on the boom sections
• A faulty load management system sensor

Correct answer: Worn or damaged wear pads on the boom sections

Explanation: Worn or damaged wear pads are a common cause of grinding noises and uneven movement during boom extension because they provide cushioning and low-friction sliding surfaces. Insufficient hydraulic fluid would likely affect all hydraulic functions, not just boom extension. Over-extension is typically prevented by limit switches, and a faulty sensor would more likely trigger a warning light or inhibit function rather than cause physical grinding.